diff options
Diffstat (limited to 'crypto/evp/e_aes.c')
| -rw-r--r-- | crypto/evp/e_aes.c | 3013 |
1 files changed, 2595 insertions, 418 deletions
diff --git a/crypto/evp/e_aes.c b/crypto/evp/e_aes.c index ccc626f1d81c..0add393276bc 100644 --- a/crypto/evp/e_aes.c +++ b/crypto/evp/e_aes.c @@ -1,67 +1,23 @@ -/* ==================================================================== - * Copyright (c) 2001-2018 The OpenSSL Project. All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in - * the documentation and/or other materials provided with the - * distribution. - * - * 3. All advertising materials mentioning features or use of this - * software must display the following acknowledgment: - * "This product includes software developed by the OpenSSL Project - * for use in the OpenSSL Toolkit. (http://www.openssl.org/)" - * - * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to - * endorse or promote products derived from this software without - * prior written permission. For written permission, please contact - * openssl-core@openssl.org. - * - * 5. Products derived from this software may not be called "OpenSSL" - * nor may "OpenSSL" appear in their names without prior written - * permission of the OpenSSL Project. - * - * 6. Redistributions of any form whatsoever must retain the following - * acknowledgment: - * "This product includes software developed by the OpenSSL Project - * for use in the OpenSSL Toolkit (http://www.openssl.org/)" - * - * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY - * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR - * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR - * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT - * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; - * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, - * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) - * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED - * OF THE POSSIBILITY OF SUCH DAMAGE. - * ==================================================================== +/* + * Copyright 2001-2018 The OpenSSL Project Authors. All Rights Reserved. * + * Licensed under the OpenSSL license (the "License"). You may not use + * this file except in compliance with the License. You can obtain a copy + * in the file LICENSE in the source distribution or at + * https://www.openssl.org/source/license.html */ #include <openssl/opensslconf.h> -#ifndef OPENSSL_NO_AES #include <openssl/crypto.h> -# include <openssl/evp.h> -# include <openssl/err.h> -# include <string.h> -# include <assert.h> -# include <openssl/aes.h> -# include "evp_locl.h" -# include "modes_lcl.h" -# include <openssl/rand.h> - -# undef EVP_CIPH_FLAG_FIPS -# define EVP_CIPH_FLAG_FIPS 0 +#include <openssl/evp.h> +#include <openssl/err.h> +#include <string.h> +#include <assert.h> +#include <openssl/aes.h> +#include "internal/evp_int.h" +#include "modes_lcl.h" +#include <openssl/rand.h> +#include "evp_locl.h" typedef struct { union { @@ -113,13 +69,38 @@ typedef struct { int tag_set; /* Set if tag is valid */ int len_set; /* Set if message length set */ int L, M; /* L and M parameters from RFC3610 */ + int tls_aad_len; /* TLS AAD length */ CCM128_CONTEXT ccm; ccm128_f str; } EVP_AES_CCM_CTX; -# define MAXBITCHUNK ((size_t)1<<(sizeof(size_t)*8-4)) +#ifndef OPENSSL_NO_OCB +typedef struct { + union { + double align; + AES_KEY ks; + } ksenc; /* AES key schedule to use for encryption */ + union { + double align; + AES_KEY ks; + } ksdec; /* AES key schedule to use for decryption */ + int key_set; /* Set if key initialised */ + int iv_set; /* Set if an iv is set */ + OCB128_CONTEXT ocb; + unsigned char *iv; /* Temporary IV store */ + unsigned char tag[16]; + unsigned char data_buf[16]; /* Store partial data blocks */ + unsigned char aad_buf[16]; /* Store partial AAD blocks */ + int data_buf_len; + int aad_buf_len; + int ivlen; /* IV length */ + int taglen; +} EVP_AES_OCB_CTX; +#endif -# ifdef VPAES_ASM +#define MAXBITCHUNK ((size_t)1<<(sizeof(size_t)*8-4)) + +#ifdef VPAES_ASM int vpaes_set_encrypt_key(const unsigned char *userKey, int bits, AES_KEY *key); int vpaes_set_decrypt_key(const unsigned char *userKey, int bits, @@ -134,8 +115,8 @@ void vpaes_cbc_encrypt(const unsigned char *in, unsigned char *out, size_t length, const AES_KEY *key, unsigned char *ivec, int enc); -# endif -# ifdef BSAES_ASM +#endif +#ifdef BSAES_ASM void bsaes_cbc_encrypt(const unsigned char *in, unsigned char *out, size_t length, const AES_KEY *key, unsigned char ivec[16], int enc); @@ -148,54 +129,71 @@ void bsaes_xts_encrypt(const unsigned char *inp, unsigned char *out, void bsaes_xts_decrypt(const unsigned char *inp, unsigned char *out, size_t len, const AES_KEY *key1, const AES_KEY *key2, const unsigned char iv[16]); -# endif -# ifdef AES_CTR_ASM +#endif +#ifdef AES_CTR_ASM void AES_ctr32_encrypt(const unsigned char *in, unsigned char *out, size_t blocks, const AES_KEY *key, const unsigned char ivec[AES_BLOCK_SIZE]); -# endif -# ifdef AES_XTS_ASM +#endif +#ifdef AES_XTS_ASM void AES_xts_encrypt(const unsigned char *inp, unsigned char *out, size_t len, const AES_KEY *key1, const AES_KEY *key2, const unsigned char iv[16]); void AES_xts_decrypt(const unsigned char *inp, unsigned char *out, size_t len, const AES_KEY *key1, const AES_KEY *key2, const unsigned char iv[16]); -# endif +#endif -# if defined(OPENSSL_CPUID_OBJ) && (defined(__powerpc__) || defined(__ppc__) || defined(_ARCH_PPC)) -# include "ppc_arch.h" -# ifdef VPAES_ASM -# define VPAES_CAPABLE (OPENSSL_ppccap_P & PPC_ALTIVEC) -# endif -# define HWAES_CAPABLE (OPENSSL_ppccap_P & PPC_CRYPTO207) -# define HWAES_set_encrypt_key aes_p8_set_encrypt_key -# define HWAES_set_decrypt_key aes_p8_set_decrypt_key -# define HWAES_encrypt aes_p8_encrypt -# define HWAES_decrypt aes_p8_decrypt -# define HWAES_cbc_encrypt aes_p8_cbc_encrypt -# define HWAES_ctr32_encrypt_blocks aes_p8_ctr32_encrypt_blocks +/* increment counter (64-bit int) by 1 */ +static void ctr64_inc(unsigned char *counter) +{ + int n = 8; + unsigned char c; + + do { + --n; + c = counter[n]; + ++c; + counter[n] = c; + if (c) + return; + } while (n); +} + +#if defined(OPENSSL_CPUID_OBJ) && (defined(__powerpc__) || defined(__ppc__) || defined(_ARCH_PPC)) +# include "ppc_arch.h" +# ifdef VPAES_ASM +# define VPAES_CAPABLE (OPENSSL_ppccap_P & PPC_ALTIVEC) # endif +# define HWAES_CAPABLE (OPENSSL_ppccap_P & PPC_CRYPTO207) +# define HWAES_set_encrypt_key aes_p8_set_encrypt_key +# define HWAES_set_decrypt_key aes_p8_set_decrypt_key +# define HWAES_encrypt aes_p8_encrypt +# define HWAES_decrypt aes_p8_decrypt +# define HWAES_cbc_encrypt aes_p8_cbc_encrypt +# define HWAES_ctr32_encrypt_blocks aes_p8_ctr32_encrypt_blocks +# define HWAES_xts_encrypt aes_p8_xts_encrypt +# define HWAES_xts_decrypt aes_p8_xts_decrypt +#endif -# if defined(AES_ASM) && !defined(I386_ONLY) && ( \ +#if defined(AES_ASM) && !defined(I386_ONLY) && ( \ ((defined(__i386) || defined(__i386__) || \ defined(_M_IX86)) && defined(OPENSSL_IA32_SSE2))|| \ defined(__x86_64) || defined(__x86_64__) || \ - defined(_M_AMD64) || defined(_M_X64) || \ - defined(__INTEL__) ) + defined(_M_AMD64) || defined(_M_X64) ) extern unsigned int OPENSSL_ia32cap_P[]; -# ifdef VPAES_ASM -# define VPAES_CAPABLE (OPENSSL_ia32cap_P[1]&(1<<(41-32))) -# endif -# ifdef BSAES_ASM -# define BSAES_CAPABLE (OPENSSL_ia32cap_P[1]&(1<<(41-32))) -# endif +# ifdef VPAES_ASM +# define VPAES_CAPABLE (OPENSSL_ia32cap_P[1]&(1<<(41-32))) +# endif +# ifdef BSAES_ASM +# define BSAES_CAPABLE (OPENSSL_ia32cap_P[1]&(1<<(41-32))) +# endif /* * AES-NI section */ -# define AESNI_CAPABLE (OPENSSL_ia32cap_P[1]&(1<<(57-32))) +# define AESNI_CAPABLE (OPENSSL_ia32cap_P[1]&(1<<(57-32))) int aesni_set_encrypt_key(const unsigned char *userKey, int bits, AES_KEY *key); @@ -246,41 +244,43 @@ void aesni_ccm64_decrypt_blocks(const unsigned char *in, const unsigned char ivec[16], unsigned char cmac[16]); -# if defined(__x86_64) || defined(__x86_64__) || defined(_M_AMD64) || defined(_M_X64) +# if defined(__x86_64) || defined(__x86_64__) || defined(_M_AMD64) || defined(_M_X64) size_t aesni_gcm_encrypt(const unsigned char *in, unsigned char *out, size_t len, const void *key, unsigned char ivec[16], u64 *Xi); -# define AES_gcm_encrypt aesni_gcm_encrypt +# define AES_gcm_encrypt aesni_gcm_encrypt size_t aesni_gcm_decrypt(const unsigned char *in, unsigned char *out, size_t len, const void *key, unsigned char ivec[16], u64 *Xi); -# define AES_gcm_decrypt aesni_gcm_decrypt +# define AES_gcm_decrypt aesni_gcm_decrypt void gcm_ghash_avx(u64 Xi[2], const u128 Htable[16], const u8 *in, size_t len); -# define AES_GCM_ASM(gctx) (gctx->ctr==aesni_ctr32_encrypt_blocks && \ +# define AES_GCM_ASM(gctx) (gctx->ctr==aesni_ctr32_encrypt_blocks && \ gctx->gcm.ghash==gcm_ghash_avx) -# define AES_GCM_ASM2(gctx) (gctx->gcm.block==(block128_f)aesni_encrypt && \ +# define AES_GCM_ASM2(gctx) (gctx->gcm.block==(block128_f)aesni_encrypt && \ gctx->gcm.ghash==gcm_ghash_avx) -# undef AES_GCM_ASM2 /* minor size optimization */ -# endif +# undef AES_GCM_ASM2 /* minor size optimization */ +# endif static int aesni_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, const unsigned char *iv, int enc) { int ret, mode; - EVP_AES_KEY *dat = (EVP_AES_KEY *) ctx->cipher_data; + EVP_AES_KEY *dat = EVP_C_DATA(EVP_AES_KEY,ctx); - mode = ctx->cipher->flags & EVP_CIPH_MODE; + mode = EVP_CIPHER_CTX_mode(ctx); if ((mode == EVP_CIPH_ECB_MODE || mode == EVP_CIPH_CBC_MODE) && !enc) { - ret = aesni_set_decrypt_key(key, ctx->key_len * 8, ctx->cipher_data); + ret = aesni_set_decrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8, + &dat->ks.ks); dat->block = (block128_f) aesni_decrypt; dat->stream.cbc = mode == EVP_CIPH_CBC_MODE ? (cbc128_f) aesni_cbc_encrypt : NULL; } else { - ret = aesni_set_encrypt_key(key, ctx->key_len * 8, ctx->cipher_data); + ret = aesni_set_encrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8, + &dat->ks.ks); dat->block = (block128_f) aesni_encrypt; if (mode == EVP_CIPH_CBC_MODE) dat->stream.cbc = (cbc128_f) aesni_cbc_encrypt; @@ -301,7 +301,9 @@ static int aesni_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, static int aesni_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t len) { - aesni_cbc_encrypt(in, out, len, ctx->cipher_data, ctx->iv, ctx->encrypt); + aesni_cbc_encrypt(in, out, len, &EVP_C_DATA(EVP_AES_KEY,ctx)->ks.ks, + EVP_CIPHER_CTX_iv_noconst(ctx), + EVP_CIPHER_CTX_encrypting(ctx)); return 1; } @@ -309,44 +311,46 @@ static int aesni_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, static int aesni_ecb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t len) { - size_t bl = ctx->cipher->block_size; + size_t bl = EVP_CIPHER_CTX_block_size(ctx); if (len < bl) return 1; - aesni_ecb_encrypt(in, out, len, ctx->cipher_data, ctx->encrypt); + aesni_ecb_encrypt(in, out, len, &EVP_C_DATA(EVP_AES_KEY,ctx)->ks.ks, + EVP_CIPHER_CTX_encrypting(ctx)); return 1; } -# define aesni_ofb_cipher aes_ofb_cipher +# define aesni_ofb_cipher aes_ofb_cipher static int aesni_ofb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t len); -# define aesni_cfb_cipher aes_cfb_cipher +# define aesni_cfb_cipher aes_cfb_cipher static int aesni_cfb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t len); -# define aesni_cfb8_cipher aes_cfb8_cipher +# define aesni_cfb8_cipher aes_cfb8_cipher static int aesni_cfb8_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t len); -# define aesni_cfb1_cipher aes_cfb1_cipher +# define aesni_cfb1_cipher aes_cfb1_cipher static int aesni_cfb1_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t len); -# define aesni_ctr_cipher aes_ctr_cipher +# define aesni_ctr_cipher aes_ctr_cipher static int aesni_ctr_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t len); static int aesni_gcm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, const unsigned char *iv, int enc) { - EVP_AES_GCM_CTX *gctx = ctx->cipher_data; + EVP_AES_GCM_CTX *gctx = EVP_C_DATA(EVP_AES_GCM_CTX,ctx); if (!iv && !key) return 1; if (key) { - aesni_set_encrypt_key(key, ctx->key_len * 8, &gctx->ks.ks); + aesni_set_encrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8, + &gctx->ks.ks); CRYPTO_gcm128_init(&gctx->gcm, &gctx->ks, (block128_f) aesni_encrypt); gctx->ctr = (ctr128_f) aesni_ctr32_encrypt_blocks; /* @@ -371,31 +375,34 @@ static int aesni_gcm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, return 1; } -# define aesni_gcm_cipher aes_gcm_cipher +# define aesni_gcm_cipher aes_gcm_cipher static int aesni_gcm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t len); static int aesni_xts_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, const unsigned char *iv, int enc) { - EVP_AES_XTS_CTX *xctx = ctx->cipher_data; + EVP_AES_XTS_CTX *xctx = EVP_C_DATA(EVP_AES_XTS_CTX,ctx); if (!iv && !key) return 1; if (key) { /* key_len is two AES keys */ if (enc) { - aesni_set_encrypt_key(key, ctx->key_len * 4, &xctx->ks1.ks); + aesni_set_encrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 4, + &xctx->ks1.ks); xctx->xts.block1 = (block128_f) aesni_encrypt; xctx->stream = aesni_xts_encrypt; } else { - aesni_set_decrypt_key(key, ctx->key_len * 4, &xctx->ks1.ks); + aesni_set_decrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 4, + &xctx->ks1.ks); xctx->xts.block1 = (block128_f) aesni_decrypt; xctx->stream = aesni_xts_decrypt; } - aesni_set_encrypt_key(key + ctx->key_len / 2, - ctx->key_len * 4, &xctx->ks2.ks); + aesni_set_encrypt_key(key + EVP_CIPHER_CTX_key_length(ctx) / 2, + EVP_CIPHER_CTX_key_length(ctx) * 4, + &xctx->ks2.ks); xctx->xts.block2 = (block128_f) aesni_encrypt; xctx->xts.key1 = &xctx->ks1; @@ -403,24 +410,25 @@ static int aesni_xts_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, if (iv) { xctx->xts.key2 = &xctx->ks2; - memcpy(ctx->iv, iv, 16); + memcpy(EVP_CIPHER_CTX_iv_noconst(ctx), iv, 16); } return 1; } -# define aesni_xts_cipher aes_xts_cipher +# define aesni_xts_cipher aes_xts_cipher static int aesni_xts_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t len); static int aesni_ccm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, const unsigned char *iv, int enc) { - EVP_AES_CCM_CTX *cctx = ctx->cipher_data; + EVP_AES_CCM_CTX *cctx = EVP_C_DATA(EVP_AES_CCM_CTX,ctx); if (!iv && !key) return 1; if (key) { - aesni_set_encrypt_key(key, ctx->key_len * 8, &cctx->ks.ks); + aesni_set_encrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8, + &cctx->ks.ks); CRYPTO_ccm128_init(&cctx->ccm, cctx->M, cctx->L, &cctx->ks, (block128_f) aesni_encrypt); cctx->str = enc ? (ccm128_f) aesni_ccm64_encrypt_blocks : @@ -428,17 +436,86 @@ static int aesni_ccm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, cctx->key_set = 1; } if (iv) { - memcpy(ctx->iv, iv, 15 - cctx->L); + memcpy(EVP_CIPHER_CTX_iv_noconst(ctx), iv, 15 - cctx->L); cctx->iv_set = 1; } return 1; } -# define aesni_ccm_cipher aes_ccm_cipher +# define aesni_ccm_cipher aes_ccm_cipher static int aesni_ccm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t len); -# define BLOCK_CIPHER_generic(nid,keylen,blocksize,ivlen,nmode,mode,MODE,flags) \ +# ifndef OPENSSL_NO_OCB +void aesni_ocb_encrypt(const unsigned char *in, unsigned char *out, + size_t blocks, const void *key, + size_t start_block_num, + unsigned char offset_i[16], + const unsigned char L_[][16], + unsigned char checksum[16]); +void aesni_ocb_decrypt(const unsigned char *in, unsigned char *out, + size_t blocks, const void *key, + size_t start_block_num, + unsigned char offset_i[16], + const unsigned char L_[][16], + unsigned char checksum[16]); + +static int aesni_ocb_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, + const unsigned char *iv, int enc) +{ + EVP_AES_OCB_CTX *octx = EVP_C_DATA(EVP_AES_OCB_CTX,ctx); + if (!iv && !key) + return 1; + if (key) { + do { + /* + * We set both the encrypt and decrypt key here because decrypt + * needs both. We could possibly optimise to remove setting the + * decrypt for an encryption operation. + */ + aesni_set_encrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8, + &octx->ksenc.ks); + aesni_set_decrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8, + &octx->ksdec.ks); + if (!CRYPTO_ocb128_init(&octx->ocb, + &octx->ksenc.ks, &octx->ksdec.ks, + (block128_f) aesni_encrypt, + (block128_f) aesni_decrypt, + enc ? aesni_ocb_encrypt + : aesni_ocb_decrypt)) + return 0; + } + while (0); + + /* + * If we have an iv we can set it directly, otherwise use saved IV. + */ + if (iv == NULL && octx->iv_set) + iv = octx->iv; + if (iv) { + if (CRYPTO_ocb128_setiv(&octx->ocb, iv, octx->ivlen, octx->taglen) + != 1) + return 0; + octx->iv_set = 1; + } + octx->key_set = 1; + } else { + /* If key set use IV, otherwise copy */ + if (octx->key_set) + CRYPTO_ocb128_setiv(&octx->ocb, iv, octx->ivlen, octx->taglen); + else + memcpy(octx->iv, iv, octx->ivlen); + octx->iv_set = 1; + } + return 1; +} + +# define aesni_ocb_cipher aes_ocb_cipher +static int aesni_ocb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, + const unsigned char *in, size_t len); +# endif /* OPENSSL_NO_OCB */ + +# define BLOCK_CIPHER_generic(nid,keylen,blocksize,ivlen,nmode,mode,MODE,flags) \ static const EVP_CIPHER aesni_##keylen##_##mode = { \ nid##_##keylen##_##nmode,blocksize,keylen/8,ivlen, \ flags|EVP_CIPH_##MODE##_MODE, \ @@ -459,7 +536,7 @@ static const EVP_CIPHER aes_##keylen##_##mode = { \ const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \ { return AESNI_CAPABLE?&aesni_##keylen##_##mode:&aes_##keylen##_##mode; } -# define BLOCK_CIPHER_custom(nid,keylen,blocksize,ivlen,mode,MODE,flags) \ +# define BLOCK_CIPHER_custom(nid,keylen,blocksize,ivlen,mode,MODE,flags) \ static const EVP_CIPHER aesni_##keylen##_##mode = { \ nid##_##keylen##_##mode,blocksize, \ (EVP_CIPH_##MODE##_MODE==EVP_CIPH_XTS_MODE?2:1)*keylen/8, ivlen, \ @@ -481,13 +558,24 @@ static const EVP_CIPHER aes_##keylen##_##mode = { \ const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \ { return AESNI_CAPABLE?&aesni_##keylen##_##mode:&aes_##keylen##_##mode; } -# elif defined(AES_ASM) && (defined(__sparc) || defined(__sparc__)) +#elif defined(AES_ASM) && (defined(__sparc) || defined(__sparc__)) -# include "sparc_arch.h" +# include "sparc_arch.h" extern unsigned int OPENSSL_sparcv9cap_P[]; -# define SPARC_AES_CAPABLE (OPENSSL_sparcv9cap_P[1] & CFR_AES) +/* + * Initial Fujitsu SPARC64 X support + */ +# define HWAES_CAPABLE (OPENSSL_sparcv9cap_P[0] & SPARCV9_FJAESX) +# define HWAES_set_encrypt_key aes_fx_set_encrypt_key +# define HWAES_set_decrypt_key aes_fx_set_decrypt_key +# define HWAES_encrypt aes_fx_encrypt +# define HWAES_decrypt aes_fx_decrypt +# define HWAES_cbc_encrypt aes_fx_cbc_encrypt +# define HWAES_ctr32_encrypt_blocks aes_fx_ctr32_encrypt_blocks + +# define SPARC_AES_CAPABLE (OPENSSL_sparcv9cap_P[1] & CFR_AES) void aes_t4_set_encrypt_key(const unsigned char *key, int bits, AES_KEY *ks); void aes_t4_set_decrypt_key(const unsigned char *key, int bits, AES_KEY *ks); @@ -504,7 +592,7 @@ void aes_t4_decrypt(const unsigned char *in, unsigned char *out, * non-key-length specific routines would require conditional branches * either in inner loops or on subroutines' entries. Former is hardly * acceptable, while latter means code size increase to size occupied - * by multiple key-length specfic subroutines, so why fight? + * by multiple key-length specific subroutines, so why fight? */ void aes128_t4_cbc_encrypt(const unsigned char *in, unsigned char *out, size_t len, const AES_KEY *key, @@ -550,14 +638,14 @@ static int aes_t4_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, const unsigned char *iv, int enc) { int ret, mode, bits; - EVP_AES_KEY *dat = (EVP_AES_KEY *) ctx->cipher_data; + EVP_AES_KEY *dat = EVP_C_DATA(EVP_AES_KEY,ctx); - mode = ctx->cipher->flags & EVP_CIPH_MODE; - bits = ctx->key_len * 8; + mode = EVP_CIPHER_CTX_mode(ctx); + bits = EVP_CIPHER_CTX_key_length(ctx) * 8; if ((mode == EVP_CIPH_ECB_MODE || mode == EVP_CIPH_CBC_MODE) && !enc) { ret = 0; - aes_t4_set_decrypt_key(key, bits, ctx->cipher_data); + aes_t4_set_decrypt_key(key, bits, &dat->ks.ks); dat->block = (block128_f) aes_t4_decrypt; switch (bits) { case 128: @@ -577,7 +665,7 @@ static int aes_t4_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, } } else { ret = 0; - aes_t4_set_encrypt_key(key, bits, ctx->cipher_data); + aes_t4_set_encrypt_key(key, bits, &dat->ks.ks); dat->block = (block128_f) aes_t4_encrypt; switch (bits) { case 128: @@ -617,42 +705,42 @@ static int aes_t4_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, return 1; } -# define aes_t4_cbc_cipher aes_cbc_cipher +# define aes_t4_cbc_cipher aes_cbc_cipher static int aes_t4_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t len); -# define aes_t4_ecb_cipher aes_ecb_cipher +# define aes_t4_ecb_cipher aes_ecb_cipher static int aes_t4_ecb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t len); -# define aes_t4_ofb_cipher aes_ofb_cipher +# define aes_t4_ofb_cipher aes_ofb_cipher static int aes_t4_ofb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t len); -# define aes_t4_cfb_cipher aes_cfb_cipher +# define aes_t4_cfb_cipher aes_cfb_cipher static int aes_t4_cfb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t len); -# define aes_t4_cfb8_cipher aes_cfb8_cipher +# define aes_t4_cfb8_cipher aes_cfb8_cipher static int aes_t4_cfb8_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t len); -# define aes_t4_cfb1_cipher aes_cfb1_cipher +# define aes_t4_cfb1_cipher aes_cfb1_cipher static int aes_t4_cfb1_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t len); -# define aes_t4_ctr_cipher aes_ctr_cipher +# define aes_t4_ctr_cipher aes_ctr_cipher static int aes_t4_ctr_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t len); static int aes_t4_gcm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, const unsigned char *iv, int enc) { - EVP_AES_GCM_CTX *gctx = ctx->cipher_data; + EVP_AES_GCM_CTX *gctx = EVP_C_DATA(EVP_AES_GCM_CTX,ctx); if (!iv && !key) return 1; if (key) { - int bits = ctx->key_len * 8; + int bits = EVP_CIPHER_CTX_key_length(ctx) * 8; aes_t4_set_encrypt_key(key, bits, &gctx->ks.ks); CRYPTO_gcm128_init(&gctx->gcm, &gctx->ks, (block128_f) aes_t4_encrypt); @@ -691,19 +779,19 @@ static int aes_t4_gcm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, return 1; } -# define aes_t4_gcm_cipher aes_gcm_cipher +# define aes_t4_gcm_cipher aes_gcm_cipher static int aes_t4_gcm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t len); static int aes_t4_xts_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, const unsigned char *iv, int enc) { - EVP_AES_XTS_CTX *xctx = ctx->cipher_data; + EVP_AES_XTS_CTX *xctx = EVP_C_DATA(EVP_AES_XTS_CTX,ctx); if (!iv && !key) return 1; if (key) { - int bits = ctx->key_len * 4; + int bits = EVP_CIPHER_CTX_key_length(ctx) * 4; xctx->stream = NULL; /* key_len is two AES keys */ if (enc) { @@ -713,11 +801,6 @@ static int aes_t4_xts_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, case 128: xctx->stream = aes128_t4_xts_encrypt; break; -# if 0 /* not yet */ - case 192: - xctx->stream = aes192_t4_xts_encrypt; - break; -# endif case 256: xctx->stream = aes256_t4_xts_encrypt; break; @@ -725,17 +808,13 @@ static int aes_t4_xts_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, return 0; } } else { - aes_t4_set_decrypt_key(key, ctx->key_len * 4, &xctx->ks1.ks); + aes_t4_set_decrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 4, + &xctx->ks1.ks); xctx->xts.block1 = (block128_f) aes_t4_decrypt; switch (bits) { case 128: xctx->stream = aes128_t4_xts_decrypt; break; -# if 0 /* not yet */ - case 192: - xctx->stream = aes192_t4_xts_decrypt; - break; -# endif case 256: xctx->stream = aes256_t4_xts_decrypt; break; @@ -744,8 +823,9 @@ static int aes_t4_xts_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, } } - aes_t4_set_encrypt_key(key + ctx->key_len / 2, - ctx->key_len * 4, &xctx->ks2.ks); + aes_t4_set_encrypt_key(key + EVP_CIPHER_CTX_key_length(ctx) / 2, + EVP_CIPHER_CTX_key_length(ctx) * 4, + &xctx->ks2.ks); xctx->xts.block2 = (block128_f) aes_t4_encrypt; xctx->xts.key1 = &xctx->ks1; @@ -753,61 +833,97 @@ static int aes_t4_xts_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, if (iv) { xctx->xts.key2 = &xctx->ks2; - memcpy(ctx->iv, iv, 16); + memcpy(EVP_CIPHER_CTX_iv_noconst(ctx), iv, 16); } return 1; } -# define aes_t4_xts_cipher aes_xts_cipher +# define aes_t4_xts_cipher aes_xts_cipher static int aes_t4_xts_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t len); static int aes_t4_ccm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, const unsigned char *iv, int enc) { - EVP_AES_CCM_CTX *cctx = ctx->cipher_data; + EVP_AES_CCM_CTX *cctx = EVP_C_DATA(EVP_AES_CCM_CTX,ctx); if (!iv && !key) return 1; if (key) { - int bits = ctx->key_len * 8; + int bits = EVP_CIPHER_CTX_key_length(ctx) * 8; aes_t4_set_encrypt_key(key, bits, &cctx->ks.ks); CRYPTO_ccm128_init(&cctx->ccm, cctx->M, cctx->L, &cctx->ks, (block128_f) aes_t4_encrypt); -# if 0 /* not yet */ - switch (bits) { - case 128: - cctx->str = enc ? (ccm128_f) aes128_t4_ccm64_encrypt : - (ccm128_f) ae128_t4_ccm64_decrypt; - break; - case 192: - cctx->str = enc ? (ccm128_f) aes192_t4_ccm64_encrypt : - (ccm128_f) ae192_t4_ccm64_decrypt; - break; - case 256: - cctx->str = enc ? (ccm128_f) aes256_t4_ccm64_encrypt : - (ccm128_f) ae256_t4_ccm64_decrypt; - break; - default: - return 0; - } -# else cctx->str = NULL; -# endif cctx->key_set = 1; } if (iv) { - memcpy(ctx->iv, iv, 15 - cctx->L); + memcpy(EVP_CIPHER_CTX_iv_noconst(ctx), iv, 15 - cctx->L); cctx->iv_set = 1; } return 1; } -# define aes_t4_ccm_cipher aes_ccm_cipher +# define aes_t4_ccm_cipher aes_ccm_cipher static int aes_t4_ccm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t len); -# define BLOCK_CIPHER_generic(nid,keylen,blocksize,ivlen,nmode,mode,MODE,flags) \ +# ifndef OPENSSL_NO_OCB +static int aes_t4_ocb_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, + const unsigned char *iv, int enc) +{ + EVP_AES_OCB_CTX *octx = EVP_C_DATA(EVP_AES_OCB_CTX,ctx); + if (!iv && !key) + return 1; + if (key) { + do { + /* + * We set both the encrypt and decrypt key here because decrypt + * needs both. We could possibly optimise to remove setting the + * decrypt for an encryption operation. + */ + aes_t4_set_encrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8, + &octx->ksenc.ks); + aes_t4_set_decrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8, + &octx->ksdec.ks); + if (!CRYPTO_ocb128_init(&octx->ocb, + &octx->ksenc.ks, &octx->ksdec.ks, + (block128_f) aes_t4_encrypt, + (block128_f) aes_t4_decrypt, + NULL)) + return 0; + } + while (0); + + /* + * If we have an iv we can set it directly, otherwise use saved IV. + */ + if (iv == NULL && octx->iv_set) + iv = octx->iv; + if (iv) { + if (CRYPTO_ocb128_setiv(&octx->ocb, iv, octx->ivlen, octx->taglen) + != 1) + return 0; + octx->iv_set = 1; + } + octx->key_set = 1; + } else { + /* If key set use IV, otherwise copy */ + if (octx->key_set) + CRYPTO_ocb128_setiv(&octx->ocb, iv, octx->ivlen, octx->taglen); + else + memcpy(octx->iv, iv, octx->ivlen); + octx->iv_set = 1; + } + return 1; +} + +# define aes_t4_ocb_cipher aes_ocb_cipher +static int aes_t4_ocb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, + const unsigned char *in, size_t len); +# endif /* OPENSSL_NO_OCB */ + +# define BLOCK_CIPHER_generic(nid,keylen,blocksize,ivlen,nmode,mode,MODE,flags) \ static const EVP_CIPHER aes_t4_##keylen##_##mode = { \ nid##_##keylen##_##nmode,blocksize,keylen/8,ivlen, \ flags|EVP_CIPH_##MODE##_MODE, \ @@ -828,7 +944,7 @@ static const EVP_CIPHER aes_##keylen##_##mode = { \ const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \ { return SPARC_AES_CAPABLE?&aes_t4_##keylen##_##mode:&aes_##keylen##_##mode; } -# define BLOCK_CIPHER_custom(nid,keylen,blocksize,ivlen,mode,MODE,flags) \ +# define BLOCK_CIPHER_custom(nid,keylen,blocksize,ivlen,mode,MODE,flags) \ static const EVP_CIPHER aes_t4_##keylen##_##mode = { \ nid##_##keylen##_##mode,blocksize, \ (EVP_CIPH_##MODE##_MODE==EVP_CIPH_XTS_MODE?2:1)*keylen/8, ivlen, \ @@ -850,9 +966,1524 @@ static const EVP_CIPHER aes_##keylen##_##mode = { \ const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \ { return SPARC_AES_CAPABLE?&aes_t4_##keylen##_##mode:&aes_##keylen##_##mode; } -# else +#elif defined(OPENSSL_CPUID_OBJ) && defined(__s390__) +/* + * IBM S390X support + */ +# include "s390x_arch.h" + +typedef struct { + union { + double align; + /*- + * KM-AES parameter block - begin + * (see z/Architecture Principles of Operation >= SA22-7832-06) + */ + struct { + unsigned char k[32]; + } param; + /* KM-AES parameter block - end */ + } km; + unsigned int fc; +} S390X_AES_ECB_CTX; + +typedef struct { + union { + double align; + /*- + * KMO-AES parameter block - begin + * (see z/Architecture Principles of Operation >= SA22-7832-08) + */ + struct { + unsigned char cv[16]; + unsigned char k[32]; + } param; + /* KMO-AES parameter block - end */ + } kmo; + unsigned int fc; + + int res; +} S390X_AES_OFB_CTX; + +typedef struct { + union { + double align; + /*- + * KMF-AES parameter block - begin + * (see z/Architecture Principles of Operation >= SA22-7832-08) + */ + struct { + unsigned char cv[16]; + unsigned char k[32]; + } param; + /* KMF-AES parameter block - end */ + } kmf; + unsigned int fc; + + int res; +} S390X_AES_CFB_CTX; + +typedef struct { + union { + double align; + /*- + * KMA-GCM-AES parameter block - begin + * (see z/Architecture Principles of Operation >= SA22-7832-11) + */ + struct { + unsigned char reserved[12]; + union { + unsigned int w; + unsigned char b[4]; + } cv; + union { + unsigned long long g[2]; + unsigned char b[16]; + } t; + unsigned char h[16]; + unsigned long long taadl; + unsigned long long tpcl; + union { + unsigned long long g[2]; + unsigned int w[4]; + } j0; + unsigned char k[32]; + } param; + /* KMA-GCM-AES parameter block - end */ + } kma; + unsigned int fc; + int key_set; + + unsigned char *iv; + int ivlen; + int iv_set; + int iv_gen; + + int taglen; + + unsigned char ares[16]; + unsigned char mres[16]; + unsigned char kres[16]; + int areslen; + int mreslen; + int kreslen; + + int tls_aad_len; +} S390X_AES_GCM_CTX; + +typedef struct { + union { + double align; + /*- + * Padding is chosen so that ccm.kmac_param.k overlaps with key.k and + * ccm.fc with key.k.rounds. Remember that on s390x, an AES_KEY's + * rounds field is used to store the function code and that the key + * schedule is not stored (if aes hardware support is detected). + */ + struct { + unsigned char pad[16]; + AES_KEY k; + } key; + + struct { + /*- + * KMAC-AES parameter block - begin + * (see z/Architecture Principles of Operation >= SA22-7832-08) + */ + struct { + union { + unsigned long long g[2]; + unsigned char b[16]; + } icv; + unsigned char k[32]; + } kmac_param; + /* KMAC-AES paramater block - end */ + + union { + unsigned long long g[2]; + unsigned char b[16]; + } nonce; + union { + unsigned long long g[2]; + unsigned char b[16]; + } buf; + + unsigned long long blocks; + int l; + int m; + int tls_aad_len; + int iv_set; + int tag_set; + int len_set; + int key_set; + + unsigned char pad[140]; + unsigned int fc; + } ccm; + } aes; +} S390X_AES_CCM_CTX; + +/* Convert key size to function code: [16,24,32] -> [18,19,20]. */ +# define S390X_AES_FC(keylen) (S390X_AES_128 + ((((keylen) << 3) - 128) >> 6)) + +/* Most modes of operation need km for partial block processing. */ +# define S390X_aes_128_CAPABLE (OPENSSL_s390xcap_P.km[0] & \ + S390X_CAPBIT(S390X_AES_128)) +# define S390X_aes_192_CAPABLE (OPENSSL_s390xcap_P.km[0] & \ + S390X_CAPBIT(S390X_AES_192)) +# define S390X_aes_256_CAPABLE (OPENSSL_s390xcap_P.km[0] & \ + S390X_CAPBIT(S390X_AES_256)) + +# define s390x_aes_init_key aes_init_key +static int s390x_aes_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, + const unsigned char *iv, int enc); + +# define S390X_aes_128_cbc_CAPABLE 1 /* checked by callee */ +# define S390X_aes_192_cbc_CAPABLE 1 +# define S390X_aes_256_cbc_CAPABLE 1 +# define S390X_AES_CBC_CTX EVP_AES_KEY + +# define s390x_aes_cbc_init_key aes_init_key + +# define s390x_aes_cbc_cipher aes_cbc_cipher +static int s390x_aes_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, + const unsigned char *in, size_t len); + +# define S390X_aes_128_ecb_CAPABLE S390X_aes_128_CAPABLE +# define S390X_aes_192_ecb_CAPABLE S390X_aes_192_CAPABLE +# define S390X_aes_256_ecb_CAPABLE S390X_aes_256_CAPABLE + +static int s390x_aes_ecb_init_key(EVP_CIPHER_CTX *ctx, + const unsigned char *key, + const unsigned char *iv, int enc) +{ + S390X_AES_ECB_CTX *cctx = EVP_C_DATA(S390X_AES_ECB_CTX, ctx); + const int keylen = EVP_CIPHER_CTX_key_length(ctx); + + cctx->fc = S390X_AES_FC(keylen); + if (!enc) + cctx->fc |= S390X_DECRYPT; + + memcpy(cctx->km.param.k, key, keylen); + return 1; +} + +static int s390x_aes_ecb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, + const unsigned char *in, size_t len) +{ + S390X_AES_ECB_CTX *cctx = EVP_C_DATA(S390X_AES_ECB_CTX, ctx); + + s390x_km(in, len, out, cctx->fc, &cctx->km.param); + return 1; +} + +# define S390X_aes_128_ofb_CAPABLE (S390X_aes_128_CAPABLE && \ + (OPENSSL_s390xcap_P.kmo[0] & \ + S390X_CAPBIT(S390X_AES_128))) +# define S390X_aes_192_ofb_CAPABLE (S390X_aes_192_CAPABLE && \ + (OPENSSL_s390xcap_P.kmo[0] & \ + S390X_CAPBIT(S390X_AES_192))) +# define S390X_aes_256_ofb_CAPABLE (S390X_aes_256_CAPABLE && \ + (OPENSSL_s390xcap_P.kmo[0] & \ + S390X_CAPBIT(S390X_AES_256))) + +static int s390x_aes_ofb_init_key(EVP_CIPHER_CTX *ctx, + const unsigned char *key, + const unsigned char *ivec, int enc) +{ + S390X_AES_OFB_CTX *cctx = EVP_C_DATA(S390X_AES_OFB_CTX, ctx); + const unsigned char *iv = EVP_CIPHER_CTX_original_iv(ctx); + const int keylen = EVP_CIPHER_CTX_key_length(ctx); + const int ivlen = EVP_CIPHER_CTX_iv_length(ctx); + + memcpy(cctx->kmo.param.cv, iv, ivlen); + memcpy(cctx->kmo.param.k, key, keylen); + cctx->fc = S390X_AES_FC(keylen); + cctx->res = 0; + return 1; +} + +static int s390x_aes_ofb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, + const unsigned char *in, size_t len) +{ + S390X_AES_OFB_CTX *cctx = EVP_C_DATA(S390X_AES_OFB_CTX, ctx); + int n = cctx->res; + int rem; + + while (n && len) { + *out = *in ^ cctx->kmo.param.cv[n]; + n = (n + 1) & 0xf; + --len; + ++in; + ++out; + } + + rem = len & 0xf; + + len &= ~(size_t)0xf; + if (len) { + s390x_kmo(in, len, out, cctx->fc, &cctx->kmo.param); + + out += len; + in += len; + } + + if (rem) { + s390x_km(cctx->kmo.param.cv, 16, cctx->kmo.param.cv, cctx->fc, + cctx->kmo.param.k); + + while (rem--) { + out[n] = in[n] ^ cctx->kmo.param.cv[n]; + ++n; + } + } + + cctx->res = n; + return 1; +} + +# define S390X_aes_128_cfb_CAPABLE (S390X_aes_128_CAPABLE && \ + (OPENSSL_s390xcap_P.kmf[0] & \ + S390X_CAPBIT(S390X_AES_128))) +# define S390X_aes_192_cfb_CAPABLE (S390X_aes_192_CAPABLE && \ + (OPENSSL_s390xcap_P.kmf[0] & \ + S390X_CAPBIT(S390X_AES_192))) +# define S390X_aes_256_cfb_CAPABLE (S390X_aes_256_CAPABLE && \ + (OPENSSL_s390xcap_P.kmf[0] & \ + S390X_CAPBIT(S390X_AES_256))) + +static int s390x_aes_cfb_init_key(EVP_CIPHER_CTX *ctx, + const unsigned char *key, + const unsigned char *ivec, int enc) +{ + S390X_AES_CFB_CTX *cctx = EVP_C_DATA(S390X_AES_CFB_CTX, ctx); + const unsigned char *iv = EVP_CIPHER_CTX_original_iv(ctx); + const int keylen = EVP_CIPHER_CTX_key_length(ctx); + const int ivlen = EVP_CIPHER_CTX_iv_length(ctx); + + cctx->fc = S390X_AES_FC(keylen); + cctx->fc |= 16 << 24; /* 16 bytes cipher feedback */ + if (!enc) + cctx->fc |= S390X_DECRYPT; + + cctx->res = 0; + memcpy(cctx->kmf.param.cv, iv, ivlen); + memcpy(cctx->kmf.param.k, key, keylen); + return 1; +} + +static int s390x_aes_cfb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, + const unsigned char *in, size_t len) +{ + S390X_AES_CFB_CTX *cctx = EVP_C_DATA(S390X_AES_CFB_CTX, ctx); + const int keylen = EVP_CIPHER_CTX_key_length(ctx); + const int enc = EVP_CIPHER_CTX_encrypting(ctx); + int n = cctx->res; + int rem; + unsigned char tmp; + + while (n && len) { + tmp = *in; + *out = cctx->kmf.param.cv[n] ^ tmp; + cctx->kmf.param.cv[n] = enc ? *out : tmp; + n = (n + 1) & 0xf; + --len; + ++in; + ++out; + } + + rem = len & 0xf; + + len &= ~(size_t)0xf; + if (len) { + s390x_kmf(in, len, out, cctx->fc, &cctx->kmf.param); + + out += len; + in += len; + } + + if (rem) { + s390x_km(cctx->kmf.param.cv, 16, cctx->kmf.param.cv, + S390X_AES_FC(keylen), cctx->kmf.param.k); + + while (rem--) { + tmp = in[n]; + out[n] = cctx->kmf.param.cv[n] ^ tmp; + cctx->kmf.param.cv[n] = enc ? out[n] : tmp; + ++n; + } + } + + cctx->res = n; + return 1; +} + +# define S390X_aes_128_cfb8_CAPABLE (OPENSSL_s390xcap_P.kmf[0] & \ + S390X_CAPBIT(S390X_AES_128)) +# define S390X_aes_192_cfb8_CAPABLE (OPENSSL_s390xcap_P.kmf[0] & \ + S390X_CAPBIT(S390X_AES_192)) +# define S390X_aes_256_cfb8_CAPABLE (OPENSSL_s390xcap_P.kmf[0] & \ + S390X_CAPBIT(S390X_AES_256)) + +static int s390x_aes_cfb8_init_key(EVP_CIPHER_CTX *ctx, + const unsigned char *key, + const unsigned char *ivec, int enc) +{ + S390X_AES_CFB_CTX *cctx = EVP_C_DATA(S390X_AES_CFB_CTX, ctx); + const unsigned char *iv = EVP_CIPHER_CTX_original_iv(ctx); + const int keylen = EVP_CIPHER_CTX_key_length(ctx); + const int ivlen = EVP_CIPHER_CTX_iv_length(ctx); + + cctx->fc = S390X_AES_FC(keylen); + cctx->fc |= 1 << 24; /* 1 byte cipher feedback */ + if (!enc) + cctx->fc |= S390X_DECRYPT; + + memcpy(cctx->kmf.param.cv, iv, ivlen); + memcpy(cctx->kmf.param.k, key, keylen); + return 1; +} + +static int s390x_aes_cfb8_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, + const unsigned char *in, size_t len) +{ + S390X_AES_CFB_CTX *cctx = EVP_C_DATA(S390X_AES_CFB_CTX, ctx); + + s390x_kmf(in, len, out, cctx->fc, &cctx->kmf.param); + return 1; +} + +# define S390X_aes_128_cfb1_CAPABLE 0 +# define S390X_aes_192_cfb1_CAPABLE 0 +# define S390X_aes_256_cfb1_CAPABLE 0 + +# define s390x_aes_cfb1_init_key aes_init_key + +# define s390x_aes_cfb1_cipher aes_cfb1_cipher +static int s390x_aes_cfb1_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, + const unsigned char *in, size_t len); + +# define S390X_aes_128_ctr_CAPABLE 1 /* checked by callee */ +# define S390X_aes_192_ctr_CAPABLE 1 +# define S390X_aes_256_ctr_CAPABLE 1 +# define S390X_AES_CTR_CTX EVP_AES_KEY + +# define s390x_aes_ctr_init_key aes_init_key + +# define s390x_aes_ctr_cipher aes_ctr_cipher +static int s390x_aes_ctr_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, + const unsigned char *in, size_t len); + +# define S390X_aes_128_gcm_CAPABLE (S390X_aes_128_CAPABLE && \ + (OPENSSL_s390xcap_P.kma[0] & \ + S390X_CAPBIT(S390X_AES_128))) +# define S390X_aes_192_gcm_CAPABLE (S390X_aes_192_CAPABLE && \ + (OPENSSL_s390xcap_P.kma[0] & \ + S390X_CAPBIT(S390X_AES_192))) +# define S390X_aes_256_gcm_CAPABLE (S390X_aes_256_CAPABLE && \ + (OPENSSL_s390xcap_P.kma[0] & \ + S390X_CAPBIT(S390X_AES_256))) + +/* iv + padding length for iv lenghts != 12 */ +# define S390X_gcm_ivpadlen(i) ((((i) + 15) >> 4 << 4) + 16) + +/*- + * Process additional authenticated data. Returns 0 on success. Code is + * big-endian. + */ +static int s390x_aes_gcm_aad(S390X_AES_GCM_CTX *ctx, const unsigned char *aad, + size_t len) +{ + unsigned long long alen; + int n, rem; + + if (ctx->kma.param.tpcl) + return -2; + + alen = ctx->kma.param.taadl + len; + if (alen > (U64(1) << 61) || (sizeof(len) == 8 && alen < len)) + return -1; + ctx->kma.param.taadl = alen; + + n = ctx->areslen; + if (n) { + while (n && len) { + ctx->ares[n] = *aad; + n = (n + 1) & 0xf; + ++aad; + --len; + } + /* ctx->ares contains a complete block if offset has wrapped around */ + if (!n) { + s390x_kma(ctx->ares, 16, NULL, 0, NULL, ctx->fc, &ctx->kma.param); + ctx->fc |= S390X_KMA_HS; + } + ctx->areslen = n; + } + + rem = len & 0xf; + + len &= ~(size_t)0xf; + if (len) { + s390x_kma(aad, len, NULL, 0, NULL, ctx->fc, &ctx->kma.param); + aad += len; + ctx->fc |= S390X_KMA_HS; + } + + if (rem) { + ctx->areslen = rem; + + do { + --rem; + ctx->ares[rem] = aad[rem]; + } while (rem); + } + return 0; +} -# define BLOCK_CIPHER_generic(nid,keylen,blocksize,ivlen,nmode,mode,MODE,flags) \ +/*- + * En/de-crypt plain/cipher-text and authenticate ciphertext. Returns 0 for + * success. Code is big-endian. + */ +static int s390x_aes_gcm(S390X_AES_GCM_CTX *ctx, const unsigned char *in, + unsigned char *out, size_t len) +{ + const unsigned char *inptr; + unsigned long long mlen; + union { + unsigned int w[4]; + unsigned char b[16]; + } buf; + size_t inlen; + int n, rem, i; + + mlen = ctx->kma.param.tpcl + len; + if (mlen > ((U64(1) << 36) - 32) || (sizeof(len) == 8 && mlen < len)) + return -1; + ctx->kma.param.tpcl = mlen; + + n = ctx->mreslen; + if (n) { + inptr = in; + inlen = len; + while (n && inlen) { + ctx->mres[n] = *inptr; + n = (n + 1) & 0xf; + ++inptr; + --inlen; + } + /* ctx->mres contains a complete block if offset has wrapped around */ + if (!n) { + s390x_kma(ctx->ares, ctx->areslen, ctx->mres, 16, buf.b, + ctx->fc | S390X_KMA_LAAD, &ctx->kma.param); + ctx->fc |= S390X_KMA_HS; + ctx->areslen = 0; + + /* previous call already encrypted/decrypted its remainder, + * see comment below */ + n = ctx->mreslen; + while (n) { + *out = buf.b[n]; + n = (n + 1) & 0xf; + ++out; + ++in; + --len; + } + ctx->mreslen = 0; + } + } + + rem = len & 0xf; + + len &= ~(size_t)0xf; + if (len) { + s390x_kma(ctx->ares, ctx->areslen, in, len, out, + ctx->fc | S390X_KMA_LAAD, &ctx->kma.param); + in += len; + out += len; + ctx->fc |= S390X_KMA_HS; + ctx->areslen = 0; + } + + /*- + * If there is a remainder, it has to be saved such that it can be + * processed by kma later. However, we also have to do the for-now + * unauthenticated encryption/decryption part here and now... + */ + if (rem) { + if (!ctx->mreslen) { + buf.w[0] = ctx->kma.param.j0.w[0]; + buf.w[1] = ctx->kma.param.j0.w[1]; + buf.w[2] = ctx->kma.param.j0.w[2]; + buf.w[3] = ctx->kma.param.cv.w + 1; + s390x_km(buf.b, 16, ctx->kres, ctx->fc & 0x1f, &ctx->kma.param.k); + } + + n = ctx->mreslen; + for (i = 0; i < rem; i++) { + ctx->mres[n + i] = in[i]; + out[i] = in[i] ^ ctx->kres[n + i]; + } + + ctx->mreslen += rem; + } + return 0; +} + +/*- + * Initialize context structure. Code is big-endian. + */ +static void s390x_aes_gcm_setiv(S390X_AES_GCM_CTX *ctx, + const unsigned char *iv) +{ + ctx->kma.param.t.g[0] = 0; + ctx->kma.param.t.g[1] = 0; + ctx->kma.param.tpcl = 0; + ctx->kma.param.taadl = 0; + ctx->mreslen = 0; + ctx->areslen = 0; + ctx->kreslen = 0; + + if (ctx->ivlen == 12) { + memcpy(&ctx->kma.param.j0, iv, ctx->ivlen); + ctx->kma.param.j0.w[3] = 1; + ctx->kma.param.cv.w = 1; + } else { + /* ctx->iv has the right size and is already padded. */ + memcpy(ctx->iv, iv, ctx->ivlen); + s390x_kma(ctx->iv, S390X_gcm_ivpadlen(ctx->ivlen), NULL, 0, NULL, + ctx->fc, &ctx->kma.param); + ctx->fc |= S390X_KMA_HS; + + ctx->kma.param.j0.g[0] = ctx->kma.param.t.g[0]; + ctx->kma.param.j0.g[1] = ctx->kma.param.t.g[1]; + ctx->kma.param.cv.w = ctx->kma.param.j0.w[3]; + ctx->kma.param.t.g[0] = 0; + ctx->kma.param.t.g[1] = 0; + } +} + +/*- + * Performs various operations on the context structure depending on control + * type. Returns 1 for success, 0 for failure and -1 for unknown control type. + * Code is big-endian. + */ +static int s390x_aes_gcm_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr) +{ + S390X_AES_GCM_CTX *gctx = EVP_C_DATA(S390X_AES_GCM_CTX, c); + S390X_AES_GCM_CTX *gctx_out; + EVP_CIPHER_CTX *out; + unsigned char *buf, *iv; + int ivlen, enc, len; + + switch (type) { + case EVP_CTRL_INIT: + ivlen = EVP_CIPHER_CTX_iv_length(c); + iv = EVP_CIPHER_CTX_iv_noconst(c); + gctx->key_set = 0; + gctx->iv_set = 0; + gctx->ivlen = ivlen; + gctx->iv = iv; + gctx->taglen = -1; + gctx->iv_gen = 0; + gctx->tls_aad_len = -1; + return 1; + + case EVP_CTRL_AEAD_SET_IVLEN: + if (arg <= 0) + return 0; + + if (arg != 12) { + iv = EVP_CIPHER_CTX_iv_noconst(c); + len = S390X_gcm_ivpadlen(arg); + + /* Allocate memory for iv if needed. */ + if (gctx->ivlen == 12 || len > S390X_gcm_ivpadlen(gctx->ivlen)) { + if (gctx->iv != iv) + OPENSSL_free(gctx->iv); + + if ((gctx->iv = OPENSSL_malloc(len)) == NULL) { + EVPerr(EVP_F_S390X_AES_GCM_CTRL, ERR_R_MALLOC_FAILURE); + return 0; + } + } + /* Add padding. */ + memset(gctx->iv + arg, 0, len - arg - 8); + *((unsigned long long *)(gctx->iv + len - 8)) = arg << 3; + } + gctx->ivlen = arg; + return 1; + + case EVP_CTRL_AEAD_SET_TAG: + buf = EVP_CIPHER_CTX_buf_noconst(c); + enc = EVP_CIPHER_CTX_encrypting(c); + if (arg <= 0 || arg > 16 || enc) + return 0; + + memcpy(buf, ptr, arg); + gctx->taglen = arg; + return 1; + + case EVP_CTRL_AEAD_GET_TAG: + enc = EVP_CIPHER_CTX_encrypting(c); + if (arg <= 0 || arg > 16 || !enc || gctx->taglen < 0) + return 0; + + memcpy(ptr, gctx->kma.param.t.b, arg); + return 1; + + case EVP_CTRL_GCM_SET_IV_FIXED: + /* Special case: -1 length restores whole iv */ + if (arg == -1) { + memcpy(gctx->iv, ptr, gctx->ivlen); + gctx->iv_gen = 1; + return 1; + } + /* + * Fixed field must be at least 4 bytes and invocation field at least + * 8. + */ + if ((arg < 4) || (gctx->ivlen - arg) < 8) + return 0; + + if (arg) + memcpy(gctx->iv, ptr, arg); + + enc = EVP_CIPHER_CTX_encrypting(c); + if (enc && RAND_bytes(gctx->iv + arg, gctx->ivlen - arg) <= 0) + return 0; + + gctx->iv_gen = 1; + return 1; + + case EVP_CTRL_GCM_IV_GEN: + if (gctx->iv_gen == 0 || gctx->key_set == 0) + return 0; + + s390x_aes_gcm_setiv(gctx, gctx->iv); + + if (arg <= 0 || arg > gctx->ivlen) + arg = gctx->ivlen; + + memcpy(ptr, gctx->iv + gctx->ivlen - arg, arg); + /* + * Invocation field will be at least 8 bytes in size and so no need + * to check wrap around or increment more than last 8 bytes. + */ + ctr64_inc(gctx->iv + gctx->ivlen - 8); + gctx->iv_set = 1; + return 1; + + case EVP_CTRL_GCM_SET_IV_INV: + enc = EVP_CIPHER_CTX_encrypting(c); + if (gctx->iv_gen == 0 || gctx->key_set == 0 || enc) + return 0; + + memcpy(gctx->iv + gctx->ivlen - arg, ptr, arg); + s390x_aes_gcm_setiv(gctx, gctx->iv); + gctx->iv_set = 1; + return 1; + + case EVP_CTRL_AEAD_TLS1_AAD: + /* Save the aad for later use. */ + if (arg != EVP_AEAD_TLS1_AAD_LEN) + return 0; + + buf = EVP_CIPHER_CTX_buf_noconst(c); + memcpy(buf, ptr, arg); + gctx->tls_aad_len = arg; + + len = buf[arg - 2] << 8 | buf[arg - 1]; + /* Correct length for explicit iv. */ + if (len < EVP_GCM_TLS_EXPLICIT_IV_LEN) + return 0; + len -= EVP_GCM_TLS_EXPLICIT_IV_LEN; + + /* If decrypting correct for tag too. */ + enc = EVP_CIPHER_CTX_encrypting(c); + if (!enc) { + if (len < EVP_GCM_TLS_TAG_LEN) + return 0; + len -= EVP_GCM_TLS_TAG_LEN; + } + buf[arg - 2] = len >> 8; + buf[arg - 1] = len & 0xff; + /* Extra padding: tag appended to record. */ + return EVP_GCM_TLS_TAG_LEN; + + case EVP_CTRL_COPY: + out = ptr; + gctx_out = EVP_C_DATA(S390X_AES_GCM_CTX, out); + iv = EVP_CIPHER_CTX_iv_noconst(c); + + if (gctx->iv == iv) { + gctx_out->iv = EVP_CIPHER_CTX_iv_noconst(out); + } else { + len = S390X_gcm_ivpadlen(gctx->ivlen); + + if ((gctx_out->iv = OPENSSL_malloc(len)) == NULL) { + EVPerr(EVP_F_S390X_AES_GCM_CTRL, ERR_R_MALLOC_FAILURE); + return 0; + } + + memcpy(gctx_out->iv, gctx->iv, len); + } + return 1; + + default: + return -1; + } +} + +/*- + * Set key and/or iv. Returns 1 on success. Otherwise 0 is returned. + */ +static int s390x_aes_gcm_init_key(EVP_CIPHER_CTX *ctx, + const unsigned char *key, + const unsigned char *iv, int enc) +{ + S390X_AES_GCM_CTX *gctx = EVP_C_DATA(S390X_AES_GCM_CTX, ctx); + int keylen; + + if (iv == NULL && key == NULL) + return 1; + + if (key != NULL) { + keylen = EVP_CIPHER_CTX_key_length(ctx); + memcpy(&gctx->kma.param.k, key, keylen); + + gctx->fc = S390X_AES_FC(keylen); + if (!enc) + gctx->fc |= S390X_DECRYPT; + + if (iv == NULL && gctx->iv_set) + iv = gctx->iv; + + if (iv != NULL) { + s390x_aes_gcm_setiv(gctx, iv); + gctx->iv_set = 1; + } + gctx->key_set = 1; + } else { + if (gctx->key_set) + s390x_aes_gcm_setiv(gctx, iv); + else + memcpy(gctx->iv, iv, gctx->ivlen); + + gctx->iv_set = 1; + gctx->iv_gen = 0; + } + return 1; +} + +/*- + * En/de-crypt and authenticate TLS packet. Returns the number of bytes written + * if successful. Otherwise -1 is returned. Code is big-endian. + */ +static int s390x_aes_gcm_tls_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, + const unsigned char *in, size_t len) +{ + S390X_AES_GCM_CTX *gctx = EVP_C_DATA(S390X_AES_GCM_CTX, ctx); + const unsigned char *buf = EVP_CIPHER_CTX_buf_noconst(ctx); + const int enc = EVP_CIPHER_CTX_encrypting(ctx); + int rv = -1; + + if (out != in || len < (EVP_GCM_TLS_EXPLICIT_IV_LEN + EVP_GCM_TLS_TAG_LEN)) + return -1; + + if (EVP_CIPHER_CTX_ctrl(ctx, enc ? EVP_CTRL_GCM_IV_GEN + : EVP_CTRL_GCM_SET_IV_INV, + EVP_GCM_TLS_EXPLICIT_IV_LEN, out) <= 0) + goto err; + + in += EVP_GCM_TLS_EXPLICIT_IV_LEN; + out += EVP_GCM_TLS_EXPLICIT_IV_LEN; + len -= EVP_GCM_TLS_EXPLICIT_IV_LEN + EVP_GCM_TLS_TAG_LEN; + + gctx->kma.param.taadl = gctx->tls_aad_len << 3; + gctx->kma.param.tpcl = len << 3; + s390x_kma(buf, gctx->tls_aad_len, in, len, out, + gctx->fc | S390X_KMA_LAAD | S390X_KMA_LPC, &gctx->kma.param); + + if (enc) { + memcpy(out + len, gctx->kma.param.t.b, EVP_GCM_TLS_TAG_LEN); + rv = len + EVP_GCM_TLS_EXPLICIT_IV_LEN + EVP_GCM_TLS_TAG_LEN; + } else { + if (CRYPTO_memcmp(gctx->kma.param.t.b, in + len, + EVP_GCM_TLS_TAG_LEN)) { + OPENSSL_cleanse(out, len); + goto err; + } + rv = len; + } +err: + gctx->iv_set = 0; + gctx->tls_aad_len = -1; + return rv; +} + +/*- + * Called from EVP layer to initialize context, process additional + * authenticated data, en/de-crypt plain/cipher-text and authenticate + * ciphertext or process a TLS packet, depending on context. Returns bytes + * written on success. Otherwise -1 is returned. Code is big-endian. + */ +static int s390x_aes_gcm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, + const unsigned char *in, size_t len) +{ + S390X_AES_GCM_CTX *gctx = EVP_C_DATA(S390X_AES_GCM_CTX, ctx); + unsigned char *buf, tmp[16]; + int enc; + + if (!gctx->key_set) + return -1; + + if (gctx->tls_aad_len >= 0) + return s390x_aes_gcm_tls_cipher(ctx, out, in, len); + + if (!gctx->iv_set) + return -1; + + if (in != NULL) { + if (out == NULL) { + if (s390x_aes_gcm_aad(gctx, in, len)) + return -1; + } else { + if (s390x_aes_gcm(gctx, in, out, len)) + return -1; + } + return len; + } else { + gctx->kma.param.taadl <<= 3; + gctx->kma.param.tpcl <<= 3; + s390x_kma(gctx->ares, gctx->areslen, gctx->mres, gctx->mreslen, tmp, + gctx->fc | S390X_KMA_LAAD | S390X_KMA_LPC, &gctx->kma.param); + /* recall that we already did en-/decrypt gctx->mres + * and returned it to caller... */ + OPENSSL_cleanse(tmp, gctx->mreslen); + gctx->iv_set = 0; + + enc = EVP_CIPHER_CTX_encrypting(ctx); + if (enc) { + gctx->taglen = 16; + } else { + if (gctx->taglen < 0) + return -1; + + buf = EVP_CIPHER_CTX_buf_noconst(ctx); + if (CRYPTO_memcmp(buf, gctx->kma.param.t.b, gctx->taglen)) + return -1; + } + return 0; + } +} + +static int s390x_aes_gcm_cleanup(EVP_CIPHER_CTX *c) +{ + S390X_AES_GCM_CTX *gctx = EVP_C_DATA(S390X_AES_GCM_CTX, c); + const unsigned char *iv; + + if (gctx == NULL) + return 0; + + iv = EVP_CIPHER_CTX_iv(c); + if (iv != gctx->iv) + OPENSSL_free(gctx->iv); + + OPENSSL_cleanse(gctx, sizeof(*gctx)); + return 1; +} + +# define S390X_AES_XTS_CTX EVP_AES_XTS_CTX +# define S390X_aes_128_xts_CAPABLE 1 /* checked by callee */ +# define S390X_aes_256_xts_CAPABLE 1 + +# define s390x_aes_xts_init_key aes_xts_init_key +static int s390x_aes_xts_init_key(EVP_CIPHER_CTX *ctx, + const unsigned char *key, + const unsigned char *iv, int enc); +# define s390x_aes_xts_cipher aes_xts_cipher +static int s390x_aes_xts_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, + const unsigned char *in, size_t len); +# define s390x_aes_xts_ctrl aes_xts_ctrl +static int s390x_aes_xts_ctrl(EVP_CIPHER_CTX *, int type, int arg, void *ptr); +# define s390x_aes_xts_cleanup aes_xts_cleanup + +# define S390X_aes_128_ccm_CAPABLE (S390X_aes_128_CAPABLE && \ + (OPENSSL_s390xcap_P.kmac[0] & \ + S390X_CAPBIT(S390X_AES_128))) +# define S390X_aes_192_ccm_CAPABLE (S390X_aes_192_CAPABLE && \ + (OPENSSL_s390xcap_P.kmac[0] & \ + S390X_CAPBIT(S390X_AES_192))) +# define S390X_aes_256_ccm_CAPABLE (S390X_aes_256_CAPABLE && \ + (OPENSSL_s390xcap_P.kmac[0] & \ + S390X_CAPBIT(S390X_AES_256))) + +# define S390X_CCM_AAD_FLAG 0x40 + +/*- + * Set nonce and length fields. Code is big-endian. + */ +static inline void s390x_aes_ccm_setiv(S390X_AES_CCM_CTX *ctx, + const unsigned char *nonce, + size_t mlen) +{ + ctx->aes.ccm.nonce.b[0] &= ~S390X_CCM_AAD_FLAG; + ctx->aes.ccm.nonce.g[1] = mlen; + memcpy(ctx->aes.ccm.nonce.b + 1, nonce, 15 - ctx->aes.ccm.l); +} + +/*- + * Process additional authenticated data. Code is big-endian. + */ +static void s390x_aes_ccm_aad(S390X_AES_CCM_CTX *ctx, const unsigned char *aad, + size_t alen) +{ + unsigned char *ptr; + int i, rem; + + if (!alen) + return; + + ctx->aes.ccm.nonce.b[0] |= S390X_CCM_AAD_FLAG; + + /* Suppress 'type-punned pointer dereference' warning. */ + ptr = ctx->aes.ccm.buf.b; + + if (alen < ((1 << 16) - (1 << 8))) { + *(uint16_t *)ptr = alen; + i = 2; + } else if (sizeof(alen) == 8 + && alen >= (size_t)1 << (32 % (sizeof(alen) * 8))) { + *(uint16_t *)ptr = 0xffff; + *(uint64_t *)(ptr + 2) = alen; + i = 10; + } else { + *(uint16_t *)ptr = 0xfffe; + *(uint32_t *)(ptr + 2) = alen; + i = 6; + } + + while (i < 16 && alen) { + ctx->aes.ccm.buf.b[i] = *aad; + ++aad; + --alen; + ++i; + } + while (i < 16) { + ctx->aes.ccm.buf.b[i] = 0; + ++i; + } + + ctx->aes.ccm.kmac_param.icv.g[0] = 0; + ctx->aes.ccm.kmac_param.icv.g[1] = 0; + s390x_kmac(ctx->aes.ccm.nonce.b, 32, ctx->aes.ccm.fc, + &ctx->aes.ccm.kmac_param); + ctx->aes.ccm.blocks += 2; + + rem = alen & 0xf; + alen &= ~(size_t)0xf; + if (alen) { + s390x_kmac(aad, alen, ctx->aes.ccm.fc, &ctx->aes.ccm.kmac_param); + ctx->aes.ccm.blocks += alen >> 4; + aad += alen; + } + if (rem) { + for (i = 0; i < rem; i++) + ctx->aes.ccm.kmac_param.icv.b[i] ^= aad[i]; + + s390x_km(ctx->aes.ccm.kmac_param.icv.b, 16, + ctx->aes.ccm.kmac_param.icv.b, ctx->aes.ccm.fc, + ctx->aes.ccm.kmac_param.k); + ctx->aes.ccm.blocks++; + } +} + +/*- + * En/de-crypt plain/cipher-text. Compute tag from plaintext. Returns 0 for + * success. + */ +static int s390x_aes_ccm(S390X_AES_CCM_CTX *ctx, const unsigned char *in, + unsigned char *out, size_t len, int enc) +{ + size_t n, rem; + unsigned int i, l, num; + unsigned char flags; + + flags = ctx->aes.ccm.nonce.b[0]; + if (!(flags & S390X_CCM_AAD_FLAG)) { + s390x_km(ctx->aes.ccm.nonce.b, 16, ctx->aes.ccm.kmac_param.icv.b, + ctx->aes.ccm.fc, ctx->aes.ccm.kmac_param.k); + ctx->aes.ccm.blocks++; + } + l = flags & 0x7; + ctx->aes.ccm.nonce.b[0] = l; + + /*- + * Reconstruct length from encoded length field + * and initialize it with counter value. + */ + n = 0; + for (i = 15 - l; i < 15; i++) { + n |= ctx->aes.ccm.nonce.b[i]; + ctx->aes.ccm.nonce.b[i] = 0; + n <<= 8; + } + n |= ctx->aes.ccm.nonce.b[15]; + ctx->aes.ccm.nonce.b[15] = 1; + + if (n != len) + return -1; /* length mismatch */ + + if (enc) { + /* Two operations per block plus one for tag encryption */ + ctx->aes.ccm.blocks += (((len + 15) >> 4) << 1) + 1; + if (ctx->aes.ccm.blocks > (1ULL << 61)) + return -2; /* too much data */ + } + + num = 0; + rem = len & 0xf; + len &= ~(size_t)0xf; + + if (enc) { + /* mac-then-encrypt */ + if (len) + s390x_kmac(in, len, ctx->aes.ccm.fc, &ctx->aes.ccm.kmac_param); + if (rem) { + for (i = 0; i < rem; i++) + ctx->aes.ccm.kmac_param.icv.b[i] ^= in[len + i]; + + s390x_km(ctx->aes.ccm.kmac_param.icv.b, 16, + ctx->aes.ccm.kmac_param.icv.b, ctx->aes.ccm.fc, + ctx->aes.ccm.kmac_param.k); + } + + CRYPTO_ctr128_encrypt_ctr32(in, out, len + rem, &ctx->aes.key.k, + ctx->aes.ccm.nonce.b, ctx->aes.ccm.buf.b, + &num, (ctr128_f)AES_ctr32_encrypt); + } else { + /* decrypt-then-mac */ + CRYPTO_ctr128_encrypt_ctr32(in, out, len + rem, &ctx->aes.key.k, + ctx->aes.ccm.nonce.b, ctx->aes.ccm.buf.b, + &num, (ctr128_f)AES_ctr32_encrypt); + + if (len) + s390x_kmac(out, len, ctx->aes.ccm.fc, &ctx->aes.ccm.kmac_param); + if (rem) { + for (i = 0; i < rem; i++) + ctx->aes.ccm.kmac_param.icv.b[i] ^= out[len + i]; + + s390x_km(ctx->aes.ccm.kmac_param.icv.b, 16, + ctx->aes.ccm.kmac_param.icv.b, ctx->aes.ccm.fc, + ctx->aes.ccm.kmac_param.k); + } + } + /* encrypt tag */ + for (i = 15 - l; i < 16; i++) + ctx->aes.ccm.nonce.b[i] = 0; + + s390x_km(ctx->aes.ccm.nonce.b, 16, ctx->aes.ccm.buf.b, ctx->aes.ccm.fc, + ctx->aes.ccm.kmac_param.k); + ctx->aes.ccm.kmac_param.icv.g[0] ^= ctx->aes.ccm.buf.g[0]; + ctx->aes.ccm.kmac_param.icv.g[1] ^= ctx->aes.ccm.buf.g[1]; + + ctx->aes.ccm.nonce.b[0] = flags; /* restore flags field */ + return 0; +} + +/*- + * En/de-crypt and authenticate TLS packet. Returns the number of bytes written + * if successful. Otherwise -1 is returned. + */ +static int s390x_aes_ccm_tls_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, + const unsigned char *in, size_t len) +{ + S390X_AES_CCM_CTX *cctx = EVP_C_DATA(S390X_AES_CCM_CTX, ctx); + unsigned char *ivec = EVP_CIPHER_CTX_iv_noconst(ctx); + unsigned char *buf = EVP_CIPHER_CTX_buf_noconst(ctx); + const int enc = EVP_CIPHER_CTX_encrypting(ctx); + + if (out != in + || len < (EVP_CCM_TLS_EXPLICIT_IV_LEN + (size_t)cctx->aes.ccm.m)) + return -1; + + if (enc) { + /* Set explicit iv (sequence number). */ + memcpy(out, buf, EVP_CCM_TLS_EXPLICIT_IV_LEN); + } + + len -= EVP_CCM_TLS_EXPLICIT_IV_LEN + cctx->aes.ccm.m; + /*- + * Get explicit iv (sequence number). We already have fixed iv + * (server/client_write_iv) here. + */ + memcpy(ivec + EVP_CCM_TLS_FIXED_IV_LEN, in, EVP_CCM_TLS_EXPLICIT_IV_LEN); + s390x_aes_ccm_setiv(cctx, ivec, len); + + /* Process aad (sequence number|type|version|length) */ + s390x_aes_ccm_aad(cctx, buf, cctx->aes.ccm.tls_aad_len); + + in += EVP_CCM_TLS_EXPLICIT_IV_LEN; + out += EVP_CCM_TLS_EXPLICIT_IV_LEN; + + if (enc) { + if (s390x_aes_ccm(cctx, in, out, len, enc)) + return -1; + + memcpy(out + len, cctx->aes.ccm.kmac_param.icv.b, cctx->aes.ccm.m); + return len + EVP_CCM_TLS_EXPLICIT_IV_LEN + cctx->aes.ccm.m; + } else { + if (!s390x_aes_ccm(cctx, in, out, len, enc)) { + if (!CRYPTO_memcmp(cctx->aes.ccm.kmac_param.icv.b, in + len, + cctx->aes.ccm.m)) + return len; + } + + OPENSSL_cleanse(out, len); + return -1; + } +} + +/*- + * Set key and flag field and/or iv. Returns 1 if successful. Otherwise 0 is + * returned. + */ +static int s390x_aes_ccm_init_key(EVP_CIPHER_CTX *ctx, + const unsigned char *key, + const unsigned char *iv, int enc) +{ + S390X_AES_CCM_CTX *cctx = EVP_C_DATA(S390X_AES_CCM_CTX, ctx); + unsigned char *ivec; + int keylen; + + if (iv == NULL && key == NULL) + return 1; + + if (key != NULL) { + keylen = EVP_CIPHER_CTX_key_length(ctx); + cctx->aes.ccm.fc = S390X_AES_FC(keylen); + memcpy(cctx->aes.ccm.kmac_param.k, key, keylen); + + /* Store encoded m and l. */ + cctx->aes.ccm.nonce.b[0] = ((cctx->aes.ccm.l - 1) & 0x7) + | (((cctx->aes.ccm.m - 2) >> 1) & 0x7) << 3; + memset(cctx->aes.ccm.nonce.b + 1, 0, + sizeof(cctx->aes.ccm.nonce.b)); + cctx->aes.ccm.blocks = 0; + + cctx->aes.ccm.key_set = 1; + } + + if (iv != NULL) { + ivec = EVP_CIPHER_CTX_iv_noconst(ctx); + memcpy(ivec, iv, 15 - cctx->aes.ccm.l); + + cctx->aes.ccm.iv_set = 1; + } + + return 1; +} + +/*- + * Called from EVP layer to initialize context, process additional + * authenticated data, en/de-crypt plain/cipher-text and authenticate + * plaintext or process a TLS packet, depending on context. Returns bytes + * written on success. Otherwise -1 is returned. + */ +static int s390x_aes_ccm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, + const unsigned char *in, size_t len) +{ + S390X_AES_CCM_CTX *cctx = EVP_C_DATA(S390X_AES_CCM_CTX, ctx); + const int enc = EVP_CIPHER_CTX_encrypting(ctx); + int rv; + unsigned char *buf, *ivec; + + if (!cctx->aes.ccm.key_set) + return -1; + + if (cctx->aes.ccm.tls_aad_len >= 0) + return s390x_aes_ccm_tls_cipher(ctx, out, in, len); + + /*- + * Final(): Does not return any data. Recall that ccm is mac-then-encrypt + * so integrity must be checked already at Update() i.e., before + * potentially corrupted data is output. + */ + if (in == NULL && out != NULL) + return 0; + + if (!cctx->aes.ccm.iv_set) + return -1; + + if (!enc && !cctx->aes.ccm.tag_set) + return -1; + + if (out == NULL) { + /* Update(): Pass message length. */ + if (in == NULL) { + ivec = EVP_CIPHER_CTX_iv_noconst(ctx); + s390x_aes_ccm_setiv(cctx, ivec, len); + + cctx->aes.ccm.len_set = 1; + return len; + } + + /* Update(): Process aad. */ + if (!cctx->aes.ccm.len_set && len) + return -1; + + s390x_aes_ccm_aad(cctx, in, len); + return len; + } + + /* Update(): Process message. */ + + if (!cctx->aes.ccm.len_set) { + /*- + * In case message length was not previously set explicitely via + * Update(), set it now. + */ + ivec = EVP_CIPHER_CTX_iv_noconst(ctx); + s390x_aes_ccm_setiv(cctx, ivec, len); + + cctx->aes.ccm.len_set = 1; + } + + if (enc) { + if (s390x_aes_ccm(cctx, in, out, len, enc)) + return -1; + + cctx->aes.ccm.tag_set = 1; + return len; + } else { + rv = -1; + + if (!s390x_aes_ccm(cctx, in, out, len, enc)) { + buf = EVP_CIPHER_CTX_buf_noconst(ctx); + if (!CRYPTO_memcmp(cctx->aes.ccm.kmac_param.icv.b, buf, + cctx->aes.ccm.m)) + rv = len; + } + + if (rv == -1) + OPENSSL_cleanse(out, len); + + cctx->aes.ccm.iv_set = 0; + cctx->aes.ccm.tag_set = 0; + cctx->aes.ccm.len_set = 0; + return rv; + } +} + +/*- + * Performs various operations on the context structure depending on control + * type. Returns 1 for success, 0 for failure and -1 for unknown control type. + * Code is big-endian. + */ +static int s390x_aes_ccm_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr) +{ + S390X_AES_CCM_CTX *cctx = EVP_C_DATA(S390X_AES_CCM_CTX, c); + unsigned char *buf, *iv; + int enc, len; + + switch (type) { + case EVP_CTRL_INIT: + cctx->aes.ccm.key_set = 0; + cctx->aes.ccm.iv_set = 0; + cctx->aes.ccm.l = 8; + cctx->aes.ccm.m = 12; + cctx->aes.ccm.tag_set = 0; + cctx->aes.ccm.len_set = 0; + cctx->aes.ccm.tls_aad_len = -1; + return 1; + + case EVP_CTRL_AEAD_TLS1_AAD: + if (arg != EVP_AEAD_TLS1_AAD_LEN) + return 0; + + /* Save the aad for later use. */ + buf = EVP_CIPHER_CTX_buf_noconst(c); + memcpy(buf, ptr, arg); + cctx->aes.ccm.tls_aad_len = arg; + + len = buf[arg - 2] << 8 | buf[arg - 1]; + if (len < EVP_CCM_TLS_EXPLICIT_IV_LEN) + return 0; + + /* Correct length for explicit iv. */ + len -= EVP_CCM_TLS_EXPLICIT_IV_LEN; + + enc = EVP_CIPHER_CTX_encrypting(c); + if (!enc) { + if (len < cctx->aes.ccm.m) + return 0; + + /* Correct length for tag. */ + len -= cctx->aes.ccm.m; + } + + buf[arg - 2] = len >> 8; + buf[arg - 1] = len & 0xff; + + /* Extra padding: tag appended to record. */ + return cctx->aes.ccm.m; + + case EVP_CTRL_CCM_SET_IV_FIXED: + if (arg != EVP_CCM_TLS_FIXED_IV_LEN) + return 0; + + /* Copy to first part of the iv. */ + iv = EVP_CIPHER_CTX_iv_noconst(c); + memcpy(iv, ptr, arg); + return 1; + + case EVP_CTRL_AEAD_SET_IVLEN: + arg = 15 - arg; + /* fall-through */ + + case EVP_CTRL_CCM_SET_L: + if (arg < 2 || arg > 8) + return 0; + + cctx->aes.ccm.l = arg; + return 1; + + case EVP_CTRL_AEAD_SET_TAG: + if ((arg & 1) || arg < 4 || arg > 16) + return 0; + + enc = EVP_CIPHER_CTX_encrypting(c); + if (enc && ptr) + return 0; + + if (ptr) { + cctx->aes.ccm.tag_set = 1; + buf = EVP_CIPHER_CTX_buf_noconst(c); + memcpy(buf, ptr, arg); + } + + cctx->aes.ccm.m = arg; + return 1; + + case EVP_CTRL_AEAD_GET_TAG: + enc = EVP_CIPHER_CTX_encrypting(c); + if (!enc || !cctx->aes.ccm.tag_set) + return 0; + + if(arg < cctx->aes.ccm.m) + return 0; + + memcpy(ptr, cctx->aes.ccm.kmac_param.icv.b, cctx->aes.ccm.m); + cctx->aes.ccm.tag_set = 0; + cctx->aes.ccm.iv_set = 0; + cctx->aes.ccm.len_set = 0; + return 1; + + case EVP_CTRL_COPY: + return 1; + + default: + return -1; + } +} + +# define s390x_aes_ccm_cleanup aes_ccm_cleanup + +# ifndef OPENSSL_NO_OCB +# define S390X_AES_OCB_CTX EVP_AES_OCB_CTX +# define S390X_aes_128_ocb_CAPABLE 0 +# define S390X_aes_192_ocb_CAPABLE 0 +# define S390X_aes_256_ocb_CAPABLE 0 + +# define s390x_aes_ocb_init_key aes_ocb_init_key +static int s390x_aes_ocb_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, + const unsigned char *iv, int enc); +# define s390x_aes_ocb_cipher aes_ocb_cipher +static int s390x_aes_ocb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, + const unsigned char *in, size_t len); +# define s390x_aes_ocb_cleanup aes_ocb_cleanup +static int s390x_aes_ocb_cleanup(EVP_CIPHER_CTX *); +# define s390x_aes_ocb_ctrl aes_ocb_ctrl +static int s390x_aes_ocb_ctrl(EVP_CIPHER_CTX *, int type, int arg, void *ptr); +# endif + +# define BLOCK_CIPHER_generic(nid,keylen,blocksize,ivlen,nmode,mode, \ + MODE,flags) \ +static const EVP_CIPHER s390x_aes_##keylen##_##mode = { \ + nid##_##keylen##_##nmode,blocksize, \ + keylen / 8, \ + ivlen, \ + flags | EVP_CIPH_##MODE##_MODE, \ + s390x_aes_##mode##_init_key, \ + s390x_aes_##mode##_cipher, \ + NULL, \ + sizeof(S390X_AES_##MODE##_CTX), \ + NULL, \ + NULL, \ + NULL, \ + NULL \ +}; \ +static const EVP_CIPHER aes_##keylen##_##mode = { \ + nid##_##keylen##_##nmode, \ + blocksize, \ + keylen / 8, \ + ivlen, \ + flags | EVP_CIPH_##MODE##_MODE, \ + aes_init_key, \ + aes_##mode##_cipher, \ + NULL, \ + sizeof(EVP_AES_KEY), \ + NULL, \ + NULL, \ + NULL, \ + NULL \ +}; \ +const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \ +{ \ + return S390X_aes_##keylen##_##mode##_CAPABLE ? \ + &s390x_aes_##keylen##_##mode : &aes_##keylen##_##mode; \ +} + +# define BLOCK_CIPHER_custom(nid,keylen,blocksize,ivlen,mode,MODE,flags)\ +static const EVP_CIPHER s390x_aes_##keylen##_##mode = { \ + nid##_##keylen##_##mode, \ + blocksize, \ + (EVP_CIPH_##MODE##_MODE == EVP_CIPH_XTS_MODE ? 2 : 1) * keylen / 8, \ + ivlen, \ + flags | EVP_CIPH_##MODE##_MODE, \ + s390x_aes_##mode##_init_key, \ + s390x_aes_##mode##_cipher, \ + s390x_aes_##mode##_cleanup, \ + sizeof(S390X_AES_##MODE##_CTX), \ + NULL, \ + NULL, \ + s390x_aes_##mode##_ctrl, \ + NULL \ +}; \ +static const EVP_CIPHER aes_##keylen##_##mode = { \ + nid##_##keylen##_##mode,blocksize, \ + (EVP_CIPH_##MODE##_MODE == EVP_CIPH_XTS_MODE ? 2 : 1) * keylen / 8, \ + ivlen, \ + flags | EVP_CIPH_##MODE##_MODE, \ + aes_##mode##_init_key, \ + aes_##mode##_cipher, \ + aes_##mode##_cleanup, \ + sizeof(EVP_AES_##MODE##_CTX), \ + NULL, \ + NULL, \ + aes_##mode##_ctrl, \ + NULL \ +}; \ +const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \ +{ \ + return S390X_aes_##keylen##_##mode##_CAPABLE ? \ + &s390x_aes_##keylen##_##mode : &aes_##keylen##_##mode; \ +} + +#else + +# define BLOCK_CIPHER_generic(nid,keylen,blocksize,ivlen,nmode,mode,MODE,flags) \ static const EVP_CIPHER aes_##keylen##_##mode = { \ nid##_##keylen##_##nmode,blocksize,keylen/8,ivlen, \ flags|EVP_CIPH_##MODE##_MODE, \ @@ -864,7 +2495,7 @@ static const EVP_CIPHER aes_##keylen##_##mode = { \ const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \ { return &aes_##keylen##_##mode; } -# define BLOCK_CIPHER_custom(nid,keylen,blocksize,ivlen,mode,MODE,flags) \ +# define BLOCK_CIPHER_custom(nid,keylen,blocksize,ivlen,mode,MODE,flags) \ static const EVP_CIPHER aes_##keylen##_##mode = { \ nid##_##keylen##_##mode,blocksize, \ (EVP_CIPH_##MODE##_MODE==EVP_CIPH_XTS_MODE?2:1)*keylen/8, ivlen, \ @@ -876,25 +2507,29 @@ static const EVP_CIPHER aes_##keylen##_##mode = { \ NULL,NULL,aes_##mode##_ctrl,NULL }; \ const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \ { return &aes_##keylen##_##mode; } -# endif -# if defined(OPENSSL_CPUID_OBJ) && (defined(__arm__) || defined(__arm) || defined(__aarch64__)) -# include "arm_arch.h" -# if __ARM_MAX_ARCH__>=7 -# if defined(BSAES_ASM) -# define BSAES_CAPABLE (OPENSSL_armcap_P & ARMV7_NEON) -# endif -# define HWAES_CAPABLE (OPENSSL_armcap_P & ARMV8_AES) -# define HWAES_set_encrypt_key aes_v8_set_encrypt_key -# define HWAES_set_decrypt_key aes_v8_set_decrypt_key -# define HWAES_encrypt aes_v8_encrypt -# define HWAES_decrypt aes_v8_decrypt -# define HWAES_cbc_encrypt aes_v8_cbc_encrypt -# define HWAES_ctr32_encrypt_blocks aes_v8_ctr32_encrypt_blocks +#endif + +#if defined(OPENSSL_CPUID_OBJ) && (defined(__arm__) || defined(__arm) || defined(__aarch64__)) +# include "arm_arch.h" +# if __ARM_MAX_ARCH__>=7 +# if defined(BSAES_ASM) +# define BSAES_CAPABLE (OPENSSL_armcap_P & ARMV7_NEON) +# endif +# if defined(VPAES_ASM) +# define VPAES_CAPABLE (OPENSSL_armcap_P & ARMV7_NEON) # endif +# define HWAES_CAPABLE (OPENSSL_armcap_P & ARMV8_AES) +# define HWAES_set_encrypt_key aes_v8_set_encrypt_key +# define HWAES_set_decrypt_key aes_v8_set_decrypt_key +# define HWAES_encrypt aes_v8_encrypt +# define HWAES_decrypt aes_v8_decrypt +# define HWAES_cbc_encrypt aes_v8_cbc_encrypt +# define HWAES_ctr32_encrypt_blocks aes_v8_ctr32_encrypt_blocks # endif +#endif -# if defined(HWAES_CAPABLE) +#if defined(HWAES_CAPABLE) int HWAES_set_encrypt_key(const unsigned char *userKey, const int bits, AES_KEY *key); int HWAES_set_decrypt_key(const unsigned char *userKey, const int bits, @@ -909,9 +2544,15 @@ void HWAES_cbc_encrypt(const unsigned char *in, unsigned char *out, void HWAES_ctr32_encrypt_blocks(const unsigned char *in, unsigned char *out, size_t len, const AES_KEY *key, const unsigned char ivec[16]); -# endif +void HWAES_xts_encrypt(const unsigned char *inp, unsigned char *out, + size_t len, const AES_KEY *key1, + const AES_KEY *key2, const unsigned char iv[16]); +void HWAES_xts_decrypt(const unsigned char *inp, unsigned char *out, + size_t len, const AES_KEY *key1, + const AES_KEY *key2, const unsigned char iv[16]); +#endif -# define BLOCK_CIPHER_generic_pack(nid,keylen,flags) \ +#define BLOCK_CIPHER_generic_pack(nid,keylen,flags) \ BLOCK_CIPHER_generic(nid,keylen,16,16,cbc,cbc,CBC,flags|EVP_CIPH_FLAG_DEFAULT_ASN1) \ BLOCK_CIPHER_generic(nid,keylen,16,0,ecb,ecb,ECB,flags|EVP_CIPH_FLAG_DEFAULT_ASN1) \ BLOCK_CIPHER_generic(nid,keylen,1,16,ofb128,ofb,OFB,flags|EVP_CIPH_FLAG_DEFAULT_ASN1) \ @@ -924,85 +2565,97 @@ static int aes_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, const unsigned char *iv, int enc) { int ret, mode; - EVP_AES_KEY *dat = (EVP_AES_KEY *) ctx->cipher_data; + EVP_AES_KEY *dat = EVP_C_DATA(EVP_AES_KEY,ctx); - mode = ctx->cipher->flags & EVP_CIPH_MODE; + mode = EVP_CIPHER_CTX_mode(ctx); if ((mode == EVP_CIPH_ECB_MODE || mode == EVP_CIPH_CBC_MODE) - && !enc) -# ifdef HWAES_CAPABLE + && !enc) { +#ifdef HWAES_CAPABLE if (HWAES_CAPABLE) { - ret = HWAES_set_decrypt_key(key, ctx->key_len * 8, &dat->ks.ks); + ret = HWAES_set_decrypt_key(key, + EVP_CIPHER_CTX_key_length(ctx) * 8, + &dat->ks.ks); dat->block = (block128_f) HWAES_decrypt; dat->stream.cbc = NULL; -# ifdef HWAES_cbc_encrypt +# ifdef HWAES_cbc_encrypt if (mode == EVP_CIPH_CBC_MODE) dat->stream.cbc = (cbc128_f) HWAES_cbc_encrypt; -# endif - } else # endif -# ifdef BSAES_CAPABLE + } else +#endif +#ifdef BSAES_CAPABLE if (BSAES_CAPABLE && mode == EVP_CIPH_CBC_MODE) { - ret = AES_set_decrypt_key(key, ctx->key_len * 8, &dat->ks.ks); + ret = AES_set_decrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8, + &dat->ks.ks); dat->block = (block128_f) AES_decrypt; dat->stream.cbc = (cbc128_f) bsaes_cbc_encrypt; } else -# endif -# ifdef VPAES_CAPABLE +#endif +#ifdef VPAES_CAPABLE if (VPAES_CAPABLE) { - ret = vpaes_set_decrypt_key(key, ctx->key_len * 8, &dat->ks.ks); + ret = vpaes_set_decrypt_key(key, + EVP_CIPHER_CTX_key_length(ctx) * 8, + &dat->ks.ks); dat->block = (block128_f) vpaes_decrypt; dat->stream.cbc = mode == EVP_CIPH_CBC_MODE ? (cbc128_f) vpaes_cbc_encrypt : NULL; } else -# endif +#endif { - ret = AES_set_decrypt_key(key, ctx->key_len * 8, &dat->ks.ks); + ret = AES_set_decrypt_key(key, + EVP_CIPHER_CTX_key_length(ctx) * 8, + &dat->ks.ks); dat->block = (block128_f) AES_decrypt; dat->stream.cbc = mode == EVP_CIPH_CBC_MODE ? (cbc128_f) AES_cbc_encrypt : NULL; + } } else -# ifdef HWAES_CAPABLE +#ifdef HWAES_CAPABLE if (HWAES_CAPABLE) { - ret = HWAES_set_encrypt_key(key, ctx->key_len * 8, &dat->ks.ks); + ret = HWAES_set_encrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8, + &dat->ks.ks); dat->block = (block128_f) HWAES_encrypt; dat->stream.cbc = NULL; -# ifdef HWAES_cbc_encrypt +# ifdef HWAES_cbc_encrypt if (mode == EVP_CIPH_CBC_MODE) dat->stream.cbc = (cbc128_f) HWAES_cbc_encrypt; else -# endif -# ifdef HWAES_ctr32_encrypt_blocks +# endif +# ifdef HWAES_ctr32_encrypt_blocks if (mode == EVP_CIPH_CTR_MODE) dat->stream.ctr = (ctr128_f) HWAES_ctr32_encrypt_blocks; else -# endif +# endif (void)0; /* terminate potentially open 'else' */ } else -# endif -# ifdef BSAES_CAPABLE +#endif +#ifdef BSAES_CAPABLE if (BSAES_CAPABLE && mode == EVP_CIPH_CTR_MODE) { - ret = AES_set_encrypt_key(key, ctx->key_len * 8, &dat->ks.ks); + ret = AES_set_encrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8, + &dat->ks.ks); dat->block = (block128_f) AES_encrypt; dat->stream.ctr = (ctr128_f) bsaes_ctr32_encrypt_blocks; } else -# endif -# ifdef VPAES_CAPABLE +#endif +#ifdef VPAES_CAPABLE if (VPAES_CAPABLE) { - ret = vpaes_set_encrypt_key(key, ctx->key_len * 8, &dat->ks.ks); + ret = vpaes_set_encrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8, + &dat->ks.ks); dat->block = (block128_f) vpaes_encrypt; dat->stream.cbc = mode == EVP_CIPH_CBC_MODE ? (cbc128_f) vpaes_cbc_encrypt : NULL; } else -# endif +#endif { - ret = AES_set_encrypt_key(key, ctx->key_len * 8, &dat->ks.ks); + ret = AES_set_encrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8, + &dat->ks.ks); dat->block = (block128_f) AES_encrypt; dat->stream.cbc = mode == EVP_CIPH_CBC_MODE ? (cbc128_f) AES_cbc_encrypt : NULL; -# ifdef AES_CTR_ASM +#ifdef AES_CTR_ASM if (mode == EVP_CIPH_CTR_MODE) dat->stream.ctr = (ctr128_f) AES_ctr32_encrypt; -# endif +#endif } if (ret < 0) { @@ -1016,14 +2669,18 @@ static int aes_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, static int aes_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t len) { - EVP_AES_KEY *dat = (EVP_AES_KEY *) ctx->cipher_data; + EVP_AES_KEY *dat = EVP_C_DATA(EVP_AES_KEY,ctx); if (dat->stream.cbc) - (*dat->stream.cbc) (in, out, len, &dat->ks, ctx->iv, ctx->encrypt); - else if (ctx->encrypt) - CRYPTO_cbc128_encrypt(in, out, len, &dat->ks, ctx->iv, dat->block); + (*dat->stream.cbc) (in, out, len, &dat->ks, + EVP_CIPHER_CTX_iv_noconst(ctx), + EVP_CIPHER_CTX_encrypting(ctx)); + else if (EVP_CIPHER_CTX_encrypting(ctx)) + CRYPTO_cbc128_encrypt(in, out, len, &dat->ks, + EVP_CIPHER_CTX_iv_noconst(ctx), dat->block); else - CRYPTO_cbc128_decrypt(in, out, len, &dat->ks, ctx->iv, dat->block); + CRYPTO_cbc128_decrypt(in, out, len, &dat->ks, + EVP_CIPHER_CTX_iv_noconst(ctx), dat->block); return 1; } @@ -1031,9 +2688,9 @@ static int aes_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, static int aes_ecb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t len) { - size_t bl = ctx->cipher->block_size; + size_t bl = EVP_CIPHER_CTX_block_size(ctx); size_t i; - EVP_AES_KEY *dat = (EVP_AES_KEY *) ctx->cipher_data; + EVP_AES_KEY *dat = EVP_C_DATA(EVP_AES_KEY,ctx); if (len < bl) return 1; @@ -1047,54 +2704,72 @@ static int aes_ecb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, static int aes_ofb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t len) { - EVP_AES_KEY *dat = (EVP_AES_KEY *) ctx->cipher_data; + EVP_AES_KEY *dat = EVP_C_DATA(EVP_AES_KEY,ctx); + int num = EVP_CIPHER_CTX_num(ctx); CRYPTO_ofb128_encrypt(in, out, len, &dat->ks, - ctx->iv, &ctx->num, dat->block); + EVP_CIPHER_CTX_iv_noconst(ctx), &num, dat->block); + EVP_CIPHER_CTX_set_num(ctx, num); return 1; } static int aes_cfb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t len) { - EVP_AES_KEY *dat = (EVP_AES_KEY *) ctx->cipher_data; + EVP_AES_KEY *dat = EVP_C_DATA(EVP_AES_KEY,ctx); + int num = EVP_CIPHER_CTX_num(ctx); CRYPTO_cfb128_encrypt(in, out, len, &dat->ks, - ctx->iv, &ctx->num, ctx->encrypt, dat->block); + EVP_CIPHER_CTX_iv_noconst(ctx), &num, + EVP_CIPHER_CTX_encrypting(ctx), dat->block); + EVP_CIPHER_CTX_set_num(ctx, num); return 1; } static int aes_cfb8_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t len) { - EVP_AES_KEY *dat = (EVP_AES_KEY *) ctx->cipher_data; + EVP_AES_KEY *dat = EVP_C_DATA(EVP_AES_KEY,ctx); + int num = EVP_CIPHER_CTX_num(ctx); CRYPTO_cfb128_8_encrypt(in, out, len, &dat->ks, - ctx->iv, &ctx->num, ctx->encrypt, dat->block); + EVP_CIPHER_CTX_iv_noconst(ctx), &num, + EVP_CIPHER_CTX_encrypting(ctx), dat->block); + EVP_CIPHER_CTX_set_num(ctx, num); return 1; } static int aes_cfb1_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t len) { - EVP_AES_KEY *dat = (EVP_AES_KEY *) ctx->cipher_data; + EVP_AES_KEY *dat = EVP_C_DATA(EVP_AES_KEY,ctx); - if (ctx->flags & EVP_CIPH_FLAG_LENGTH_BITS) { + if (EVP_CIPHER_CTX_test_flags(ctx, EVP_CIPH_FLAG_LENGTH_BITS)) { + int num = EVP_CIPHER_CTX_num(ctx); CRYPTO_cfb128_1_encrypt(in, out, len, &dat->ks, - ctx->iv, &ctx->num, ctx->encrypt, dat->block); + EVP_CIPHER_CTX_iv_noconst(ctx), &num, + EVP_CIPHER_CTX_encrypting(ctx), dat->block); + EVP_CIPHER_CTX_set_num(ctx, num); return 1; } while (len >= MAXBITCHUNK) { + int num = EVP_CIPHER_CTX_num(ctx); CRYPTO_cfb128_1_encrypt(in, out, MAXBITCHUNK * 8, &dat->ks, - ctx->iv, &ctx->num, ctx->encrypt, dat->block); + EVP_CIPHER_CTX_iv_noconst(ctx), &num, + EVP_CIPHER_CTX_encrypting(ctx), dat->block); + EVP_CIPHER_CTX_set_num(ctx, num); len -= MAXBITCHUNK; out += MAXBITCHUNK; in += MAXBITCHUNK; } - if (len) + if (len) { + int num = EVP_CIPHER_CTX_num(ctx); CRYPTO_cfb128_1_encrypt(in, out, len * 8, &dat->ks, - ctx->iv, &ctx->num, ctx->encrypt, dat->block); + EVP_CIPHER_CTX_iv_noconst(ctx), &num, + EVP_CIPHER_CTX_encrypting(ctx), dat->block); + EVP_CIPHER_CTX_set_num(ctx, num); + } return 1; } @@ -1102,53 +2777,41 @@ static int aes_cfb1_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, static int aes_ctr_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t len) { - unsigned int num = ctx->num; - EVP_AES_KEY *dat = (EVP_AES_KEY *) ctx->cipher_data; + unsigned int num = EVP_CIPHER_CTX_num(ctx); + EVP_AES_KEY *dat = EVP_C_DATA(EVP_AES_KEY,ctx); if (dat->stream.ctr) CRYPTO_ctr128_encrypt_ctr32(in, out, len, &dat->ks, - ctx->iv, ctx->buf, &num, dat->stream.ctr); + EVP_CIPHER_CTX_iv_noconst(ctx), + EVP_CIPHER_CTX_buf_noconst(ctx), + &num, dat->stream.ctr); else CRYPTO_ctr128_encrypt(in, out, len, &dat->ks, - ctx->iv, ctx->buf, &num, dat->block); - ctx->num = (size_t)num; + EVP_CIPHER_CTX_iv_noconst(ctx), + EVP_CIPHER_CTX_buf_noconst(ctx), &num, + dat->block); + EVP_CIPHER_CTX_set_num(ctx, num); return 1; } -BLOCK_CIPHER_generic_pack(NID_aes, 128, EVP_CIPH_FLAG_FIPS) - BLOCK_CIPHER_generic_pack(NID_aes, 192, EVP_CIPH_FLAG_FIPS) - BLOCK_CIPHER_generic_pack(NID_aes, 256, EVP_CIPH_FLAG_FIPS) +BLOCK_CIPHER_generic_pack(NID_aes, 128, 0) + BLOCK_CIPHER_generic_pack(NID_aes, 192, 0) + BLOCK_CIPHER_generic_pack(NID_aes, 256, 0) static int aes_gcm_cleanup(EVP_CIPHER_CTX *c) { - EVP_AES_GCM_CTX *gctx = c->cipher_data; + EVP_AES_GCM_CTX *gctx = EVP_C_DATA(EVP_AES_GCM_CTX,c); if (gctx == NULL) return 0; OPENSSL_cleanse(&gctx->gcm, sizeof(gctx->gcm)); - if (gctx->iv != c->iv) + if (gctx->iv != EVP_CIPHER_CTX_iv_noconst(c)) OPENSSL_free(gctx->iv); return 1; } -/* increment counter (64-bit int) by 1 */ -static void ctr64_inc(unsigned char *counter) -{ - int n = 8; - unsigned char c; - - do { - --n; - c = counter[n]; - ++c; - counter[n] = c; - if (c) - return; - } while (n); -} - static int aes_gcm_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr) { - EVP_AES_GCM_CTX *gctx = c->cipher_data; + EVP_AES_GCM_CTX *gctx = EVP_C_DATA(EVP_AES_GCM_CTX,c); switch (type) { case EVP_CTRL_INIT: gctx->key_set = 0; @@ -1160,29 +2823,31 @@ static int aes_gcm_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr) gctx->tls_aad_len = -1; return 1; - case EVP_CTRL_GCM_SET_IVLEN: + case EVP_CTRL_AEAD_SET_IVLEN: if (arg <= 0) return 0; /* Allocate memory for IV if needed */ if ((arg > EVP_MAX_IV_LENGTH) && (arg > gctx->ivlen)) { if (gctx->iv != c->iv) OPENSSL_free(gctx->iv); - gctx->iv = OPENSSL_malloc(arg); - if (!gctx->iv) + if ((gctx->iv = OPENSSL_malloc(arg)) == NULL) { + EVPerr(EVP_F_AES_GCM_CTRL, ERR_R_MALLOC_FAILURE); return 0; + } } gctx->ivlen = arg; return 1; - case EVP_CTRL_GCM_SET_TAG: + case EVP_CTRL_AEAD_SET_TAG: if (arg <= 0 || arg > 16 || c->encrypt) return 0; memcpy(c->buf, ptr, arg); gctx->taglen = arg; return 1; - case EVP_CTRL_GCM_GET_TAG: - if (arg <= 0 || arg > 16 || !c->encrypt || gctx->taglen < 0) + case EVP_CTRL_AEAD_GET_TAG: + if (arg <= 0 || arg > 16 || !c->encrypt + || gctx->taglen < 0) return 0; memcpy(ptr, c->buf, arg); return 1; @@ -1257,7 +2922,7 @@ static int aes_gcm_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr) case EVP_CTRL_COPY: { EVP_CIPHER_CTX *out = ptr; - EVP_AES_GCM_CTX *gctx_out = out->cipher_data; + EVP_AES_GCM_CTX *gctx_out = EVP_C_DATA(EVP_AES_GCM_CTX,out); if (gctx->gcm.key) { if (gctx->gcm.key != &gctx->ks) return 0; @@ -1266,9 +2931,10 @@ static int aes_gcm_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr) if (gctx->iv == c->iv) gctx_out->iv = out->iv; else { - gctx_out->iv = OPENSSL_malloc(gctx->ivlen); - if (!gctx_out->iv) + if ((gctx_out->iv = OPENSSL_malloc(gctx->ivlen)) == NULL) { + EVPerr(EVP_F_AES_GCM_CTRL, ERR_R_MALLOC_FAILURE); return 0; + } memcpy(gctx_out->iv, gctx->iv, gctx->ivlen); } return 1; @@ -1283,25 +2949,25 @@ static int aes_gcm_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr) static int aes_gcm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, const unsigned char *iv, int enc) { - EVP_AES_GCM_CTX *gctx = ctx->cipher_data; + EVP_AES_GCM_CTX *gctx = EVP_C_DATA(EVP_AES_GCM_CTX,ctx); if (!iv && !key) return 1; if (key) { do { -# ifdef HWAES_CAPABLE +#ifdef HWAES_CAPABLE if (HWAES_CAPABLE) { HWAES_set_encrypt_key(key, ctx->key_len * 8, &gctx->ks.ks); CRYPTO_gcm128_init(&gctx->gcm, &gctx->ks, (block128_f) HWAES_encrypt); -# ifdef HWAES_ctr32_encrypt_blocks +# ifdef HWAES_ctr32_encrypt_blocks gctx->ctr = (ctr128_f) HWAES_ctr32_encrypt_blocks; -# else +# else gctx->ctr = NULL; -# endif +# endif break; } else -# endif -# ifdef BSAES_CAPABLE +#endif +#ifdef BSAES_CAPABLE if (BSAES_CAPABLE) { AES_set_encrypt_key(key, ctx->key_len * 8, &gctx->ks.ks); CRYPTO_gcm128_init(&gctx->gcm, &gctx->ks, @@ -1309,8 +2975,8 @@ static int aes_gcm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, gctx->ctr = (ctr128_f) bsaes_ctr32_encrypt_blocks; break; } else -# endif -# ifdef VPAES_CAPABLE +#endif +#ifdef VPAES_CAPABLE if (VPAES_CAPABLE) { vpaes_set_encrypt_key(key, ctx->key_len * 8, &gctx->ks.ks); CRYPTO_gcm128_init(&gctx->gcm, &gctx->ks, @@ -1318,17 +2984,17 @@ static int aes_gcm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, gctx->ctr = NULL; break; } else -# endif +#endif (void)0; /* terminate potentially open 'else' */ AES_set_encrypt_key(key, ctx->key_len * 8, &gctx->ks.ks); CRYPTO_gcm128_init(&gctx->gcm, &gctx->ks, (block128_f) AES_encrypt); -# ifdef AES_CTR_ASM +#ifdef AES_CTR_ASM gctx->ctr = (ctr128_f) AES_ctr32_encrypt; -# else +#else gctx->ctr = NULL; -# endif +#endif } while (0); /* @@ -1363,7 +3029,7 @@ static int aes_gcm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, static int aes_gcm_tls_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t len) { - EVP_AES_GCM_CTX *gctx = ctx->cipher_data; + EVP_AES_GCM_CTX *gctx = EVP_C_DATA(EVP_AES_GCM_CTX,ctx); int rv = -1; /* Encrypt/decrypt must be performed in place */ if (out != in @@ -1373,8 +3039,8 @@ static int aes_gcm_tls_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, * Set IV from start of buffer or generate IV and write to start of * buffer. */ - if (EVP_CIPHER_CTX_ctrl(ctx, ctx->encrypt ? - EVP_CTRL_GCM_IV_GEN : EVP_CTRL_GCM_SET_IV_INV, + if (EVP_CIPHER_CTX_ctrl(ctx, ctx->encrypt ? EVP_CTRL_GCM_IV_GEN + : EVP_CTRL_GCM_SET_IV_INV, EVP_GCM_TLS_EXPLICIT_IV_LEN, out) <= 0) goto err; /* Use saved AAD */ @@ -1388,7 +3054,7 @@ static int aes_gcm_tls_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, /* Encrypt payload */ if (gctx->ctr) { size_t bulk = 0; -# if defined(AES_GCM_ASM) +#if defined(AES_GCM_ASM) if (len >= 32 && AES_GCM_ASM(gctx)) { if (CRYPTO_gcm128_encrypt(&gctx->gcm, NULL, NULL, 0)) return -1; @@ -1398,7 +3064,7 @@ static int aes_gcm_tls_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, gctx->gcm.Yi.c, gctx->gcm.Xi.u); gctx->gcm.len.u[1] += bulk; } -# endif +#endif if (CRYPTO_gcm128_encrypt_ctr32(&gctx->gcm, in + bulk, out + bulk, @@ -1406,7 +3072,7 @@ static int aes_gcm_tls_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, goto err; } else { size_t bulk = 0; -# if defined(AES_GCM_ASM2) +#if defined(AES_GCM_ASM2) if (len >= 32 && AES_GCM_ASM2(gctx)) { if (CRYPTO_gcm128_encrypt(&gctx->gcm, NULL, NULL, 0)) return -1; @@ -1416,7 +3082,7 @@ static int aes_gcm_tls_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, gctx->gcm.Yi.c, gctx->gcm.Xi.u); gctx->gcm.len.u[1] += bulk; } -# endif +#endif if (CRYPTO_gcm128_encrypt(&gctx->gcm, in + bulk, out + bulk, len - bulk)) goto err; @@ -1429,7 +3095,7 @@ static int aes_gcm_tls_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, /* Decrypt */ if (gctx->ctr) { size_t bulk = 0; -# if defined(AES_GCM_ASM) +#if defined(AES_GCM_ASM) if (len >= 16 && AES_GCM_ASM(gctx)) { if (CRYPTO_gcm128_decrypt(&gctx->gcm, NULL, NULL, 0)) return -1; @@ -1439,7 +3105,7 @@ static int aes_gcm_tls_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, gctx->gcm.Yi.c, gctx->gcm.Xi.u); gctx->gcm.len.u[1] += bulk; } -# endif +#endif if (CRYPTO_gcm128_decrypt_ctr32(&gctx->gcm, in + bulk, out + bulk, @@ -1447,7 +3113,7 @@ static int aes_gcm_tls_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, goto err; } else { size_t bulk = 0; -# if defined(AES_GCM_ASM2) +#if defined(AES_GCM_ASM2) if (len >= 16 && AES_GCM_ASM2(gctx)) { if (CRYPTO_gcm128_decrypt(&gctx->gcm, NULL, NULL, 0)) return -1; @@ -1457,7 +3123,7 @@ static int aes_gcm_tls_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, gctx->gcm.Yi.c, gctx->gcm.Xi.u); gctx->gcm.len.u[1] += bulk; } -# endif +#endif if (CRYPTO_gcm128_decrypt(&gctx->gcm, in + bulk, out + bulk, len - bulk)) goto err; @@ -1481,7 +3147,7 @@ static int aes_gcm_tls_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, static int aes_gcm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t len) { - EVP_AES_GCM_CTX *gctx = ctx->cipher_data; + EVP_AES_GCM_CTX *gctx = EVP_C_DATA(EVP_AES_GCM_CTX,ctx); /* If not set up, return error */ if (!gctx->key_set) return -1; @@ -1498,7 +3164,7 @@ static int aes_gcm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, } else if (ctx->encrypt) { if (gctx->ctr) { size_t bulk = 0; -# if defined(AES_GCM_ASM) +#if defined(AES_GCM_ASM) if (len >= 32 && AES_GCM_ASM(gctx)) { size_t res = (16 - gctx->gcm.mres) % 16; @@ -1512,7 +3178,7 @@ static int aes_gcm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, gctx->gcm.len.u[1] += bulk; bulk += res; } -# endif +#endif if (CRYPTO_gcm128_encrypt_ctr32(&gctx->gcm, in + bulk, out + bulk, @@ -1520,7 +3186,7 @@ static int aes_gcm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, return -1; } else { size_t bulk = 0; -# if defined(AES_GCM_ASM2) +#if defined(AES_GCM_ASM2) if (len >= 32 && AES_GCM_ASM2(gctx)) { size_t res = (16 - gctx->gcm.mres) % 16; @@ -1534,7 +3200,7 @@ static int aes_gcm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, gctx->gcm.len.u[1] += bulk; bulk += res; } -# endif +#endif if (CRYPTO_gcm128_encrypt(&gctx->gcm, in + bulk, out + bulk, len - bulk)) return -1; @@ -1542,7 +3208,7 @@ static int aes_gcm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, } else { if (gctx->ctr) { size_t bulk = 0; -# if defined(AES_GCM_ASM) +#if defined(AES_GCM_ASM) if (len >= 16 && AES_GCM_ASM(gctx)) { size_t res = (16 - gctx->gcm.mres) % 16; @@ -1556,7 +3222,7 @@ static int aes_gcm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, gctx->gcm.len.u[1] += bulk; bulk += res; } -# endif +#endif if (CRYPTO_gcm128_decrypt_ctr32(&gctx->gcm, in + bulk, out + bulk, @@ -1564,7 +3230,7 @@ static int aes_gcm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, return -1; } else { size_t bulk = 0; -# if defined(AES_GCM_ASM2) +#if defined(AES_GCM_ASM2) if (len >= 16 && AES_GCM_ASM2(gctx)) { size_t res = (16 - gctx->gcm.mres) % 16; @@ -1578,7 +3244,7 @@ static int aes_gcm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, gctx->gcm.len.u[1] += bulk; bulk += res; } -# endif +#endif if (CRYPTO_gcm128_decrypt(&gctx->gcm, in + bulk, out + bulk, len - bulk)) return -1; @@ -1603,27 +3269,24 @@ static int aes_gcm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, } -# define CUSTOM_FLAGS (EVP_CIPH_FLAG_DEFAULT_ASN1 \ +#define CUSTOM_FLAGS (EVP_CIPH_FLAG_DEFAULT_ASN1 \ | EVP_CIPH_CUSTOM_IV | EVP_CIPH_FLAG_CUSTOM_CIPHER \ | EVP_CIPH_ALWAYS_CALL_INIT | EVP_CIPH_CTRL_INIT \ | EVP_CIPH_CUSTOM_COPY) BLOCK_CIPHER_custom(NID_aes, 128, 1, 12, gcm, GCM, - EVP_CIPH_FLAG_FIPS | EVP_CIPH_FLAG_AEAD_CIPHER | - CUSTOM_FLAGS) + EVP_CIPH_FLAG_AEAD_CIPHER | CUSTOM_FLAGS) BLOCK_CIPHER_custom(NID_aes, 192, 1, 12, gcm, GCM, - EVP_CIPH_FLAG_FIPS | EVP_CIPH_FLAG_AEAD_CIPHER | - CUSTOM_FLAGS) + EVP_CIPH_FLAG_AEAD_CIPHER | CUSTOM_FLAGS) BLOCK_CIPHER_custom(NID_aes, 256, 1, 12, gcm, GCM, - EVP_CIPH_FLAG_FIPS | EVP_CIPH_FLAG_AEAD_CIPHER | - CUSTOM_FLAGS) + EVP_CIPH_FLAG_AEAD_CIPHER | CUSTOM_FLAGS) static int aes_xts_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr) { - EVP_AES_XTS_CTX *xctx = c->cipher_data; + EVP_AES_XTS_CTX *xctx = EVP_C_DATA(EVP_AES_XTS_CTX,c); if (type == EVP_CTRL_COPY) { EVP_CIPHER_CTX *out = ptr; - EVP_AES_XTS_CTX *xctx_out = out->cipher_data; + EVP_AES_XTS_CTX *xctx_out = EVP_C_DATA(EVP_AES_XTS_CTX,out); if (xctx->xts.key1) { if (xctx->xts.key1 != &xctx->ks1) return 0; @@ -1646,75 +3309,90 @@ static int aes_xts_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr) static int aes_xts_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, const unsigned char *iv, int enc) { - EVP_AES_XTS_CTX *xctx = ctx->cipher_data; + EVP_AES_XTS_CTX *xctx = EVP_C_DATA(EVP_AES_XTS_CTX,ctx); if (!iv && !key) return 1; if (key) do { -# ifdef AES_XTS_ASM +#ifdef AES_XTS_ASM xctx->stream = enc ? AES_xts_encrypt : AES_xts_decrypt; -# else +#else xctx->stream = NULL; -# endif +#endif /* key_len is two AES keys */ -# ifdef HWAES_CAPABLE +#ifdef HWAES_CAPABLE if (HWAES_CAPABLE) { if (enc) { - HWAES_set_encrypt_key(key, ctx->key_len * 4, + HWAES_set_encrypt_key(key, + EVP_CIPHER_CTX_key_length(ctx) * 4, &xctx->ks1.ks); xctx->xts.block1 = (block128_f) HWAES_encrypt; +# ifdef HWAES_xts_encrypt + xctx->stream = HWAES_xts_encrypt; +# endif } else { - HWAES_set_decrypt_key(key, ctx->key_len * 4, + HWAES_set_decrypt_key(key, + EVP_CIPHER_CTX_key_length(ctx) * 4, &xctx->ks1.ks); xctx->xts.block1 = (block128_f) HWAES_decrypt; +# ifdef HWAES_xts_decrypt + xctx->stream = HWAES_xts_decrypt; +#endif } - HWAES_set_encrypt_key(key + ctx->key_len / 2, - ctx->key_len * 4, &xctx->ks2.ks); + HWAES_set_encrypt_key(key + EVP_CIPHER_CTX_key_length(ctx) / 2, + EVP_CIPHER_CTX_key_length(ctx) * 4, + &xctx->ks2.ks); xctx->xts.block2 = (block128_f) HWAES_encrypt; xctx->xts.key1 = &xctx->ks1; break; } else -# endif -# ifdef BSAES_CAPABLE +#endif +#ifdef BSAES_CAPABLE if (BSAES_CAPABLE) xctx->stream = enc ? bsaes_xts_encrypt : bsaes_xts_decrypt; else -# endif -# ifdef VPAES_CAPABLE +#endif +#ifdef VPAES_CAPABLE if (VPAES_CAPABLE) { if (enc) { - vpaes_set_encrypt_key(key, ctx->key_len * 4, + vpaes_set_encrypt_key(key, + EVP_CIPHER_CTX_key_length(ctx) * 4, &xctx->ks1.ks); xctx->xts.block1 = (block128_f) vpaes_encrypt; } else { - vpaes_set_decrypt_key(key, ctx->key_len * 4, + vpaes_set_decrypt_key(key, + EVP_CIPHER_CTX_key_length(ctx) * 4, &xctx->ks1.ks); xctx->xts.block1 = (block128_f) vpaes_decrypt; } - vpaes_set_encrypt_key(key + ctx->key_len / 2, - ctx->key_len * 4, &xctx->ks2.ks); + vpaes_set_encrypt_key(key + EVP_CIPHER_CTX_key_length(ctx) / 2, + EVP_CIPHER_CTX_key_length(ctx) * 4, + &xctx->ks2.ks); xctx->xts.block2 = (block128_f) vpaes_encrypt; xctx->xts.key1 = &xctx->ks1; break; } else -# endif +#endif (void)0; /* terminate potentially open 'else' */ if (enc) { - AES_set_encrypt_key(key, ctx->key_len * 4, &xctx->ks1.ks); + AES_set_encrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 4, + &xctx->ks1.ks); xctx->xts.block1 = (block128_f) AES_encrypt; } else { - AES_set_decrypt_key(key, ctx->key_len * 4, &xctx->ks1.ks); + AES_set_decrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 4, + &xctx->ks1.ks); xctx->xts.block1 = (block128_f) AES_decrypt; } - AES_set_encrypt_key(key + ctx->key_len / 2, - ctx->key_len * 4, &xctx->ks2.ks); + AES_set_encrypt_key(key + EVP_CIPHER_CTX_key_length(ctx) / 2, + EVP_CIPHER_CTX_key_length(ctx) * 4, + &xctx->ks2.ks); xctx->xts.block2 = (block128_f) AES_encrypt; xctx->xts.key1 = &xctx->ks1; @@ -1722,7 +3400,7 @@ static int aes_xts_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, if (iv) { xctx->xts.key2 = &xctx->ks2; - memcpy(ctx->iv, iv, 16); + memcpy(EVP_CIPHER_CTX_iv_noconst(ctx), iv, 16); } return 1; @@ -1731,34 +3409,34 @@ static int aes_xts_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, static int aes_xts_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t len) { - EVP_AES_XTS_CTX *xctx = ctx->cipher_data; + EVP_AES_XTS_CTX *xctx = EVP_C_DATA(EVP_AES_XTS_CTX,ctx); if (!xctx->xts.key1 || !xctx->xts.key2) return 0; if (!out || !in || len < AES_BLOCK_SIZE) return 0; if (xctx->stream) (*xctx->stream) (in, out, len, - xctx->xts.key1, xctx->xts.key2, ctx->iv); - else if (CRYPTO_xts128_encrypt(&xctx->xts, ctx->iv, in, out, len, - ctx->encrypt)) + xctx->xts.key1, xctx->xts.key2, + EVP_CIPHER_CTX_iv_noconst(ctx)); + else if (CRYPTO_xts128_encrypt(&xctx->xts, EVP_CIPHER_CTX_iv_noconst(ctx), + in, out, len, + EVP_CIPHER_CTX_encrypting(ctx))) return 0; return 1; } -# define aes_xts_cleanup NULL +#define aes_xts_cleanup NULL -# define XTS_FLAGS (EVP_CIPH_FLAG_DEFAULT_ASN1 | EVP_CIPH_CUSTOM_IV \ +#define XTS_FLAGS (EVP_CIPH_FLAG_DEFAULT_ASN1 | EVP_CIPH_CUSTOM_IV \ | EVP_CIPH_ALWAYS_CALL_INIT | EVP_CIPH_CTRL_INIT \ | EVP_CIPH_CUSTOM_COPY) -BLOCK_CIPHER_custom(NID_aes, 128, 1, 16, xts, XTS, - EVP_CIPH_FLAG_FIPS | XTS_FLAGS) - BLOCK_CIPHER_custom(NID_aes, 256, 1, 16, xts, XTS, - EVP_CIPH_FLAG_FIPS | XTS_FLAGS) +BLOCK_CIPHER_custom(NID_aes, 128, 1, 16, xts, XTS, XTS_FLAGS) + BLOCK_CIPHER_custom(NID_aes, 256, 1, 16, xts, XTS, XTS_FLAGS) static int aes_ccm_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr) { - EVP_AES_CCM_CTX *cctx = c->cipher_data; + EVP_AES_CCM_CTX *cctx = EVP_C_DATA(EVP_AES_CCM_CTX,c); switch (type) { case EVP_CTRL_INIT: cctx->key_set = 0; @@ -1767,30 +3445,66 @@ static int aes_ccm_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr) cctx->M = 12; cctx->tag_set = 0; cctx->len_set = 0; + cctx->tls_aad_len = -1; + return 1; + + case EVP_CTRL_AEAD_TLS1_AAD: + /* Save the AAD for later use */ + if (arg != EVP_AEAD_TLS1_AAD_LEN) + return 0; + memcpy(EVP_CIPHER_CTX_buf_noconst(c), ptr, arg); + cctx->tls_aad_len = arg; + { + uint16_t len = + EVP_CIPHER_CTX_buf_noconst(c)[arg - 2] << 8 + | EVP_CIPHER_CTX_buf_noconst(c)[arg - 1]; + /* Correct length for explicit IV */ + if (len < EVP_CCM_TLS_EXPLICIT_IV_LEN) + return 0; + len -= EVP_CCM_TLS_EXPLICIT_IV_LEN; + /* If decrypting correct for tag too */ + if (!EVP_CIPHER_CTX_encrypting(c)) { + if (len < cctx->M) + return 0; + len -= cctx->M; + } + EVP_CIPHER_CTX_buf_noconst(c)[arg - 2] = len >> 8; + EVP_CIPHER_CTX_buf_noconst(c)[arg - 1] = len & 0xff; + } + /* Extra padding: tag appended to record */ + return cctx->M; + + case EVP_CTRL_CCM_SET_IV_FIXED: + /* Sanity check length */ + if (arg != EVP_CCM_TLS_FIXED_IV_LEN) + return 0; + /* Just copy to first part of IV */ + memcpy(EVP_CIPHER_CTX_iv_noconst(c), ptr, arg); return 1; - case EVP_CTRL_CCM_SET_IVLEN: + case EVP_CTRL_AEAD_SET_IVLEN: arg = 15 - arg; + /* fall thru */ case EVP_CTRL_CCM_SET_L: if (arg < 2 || arg > 8) return 0; cctx->L = arg; return 1; - case EVP_CTRL_CCM_SET_TAG: + case EVP_CTRL_AEAD_SET_TAG: if ((arg & 1) || arg < 4 || arg > 16) return 0; - if (c->encrypt && ptr) + if (EVP_CIPHER_CTX_encrypting(c) && ptr) return 0; if (ptr) { cctx->tag_set = 1; - memcpy(c->buf, ptr, arg); + memcpy(EVP_CIPHER_CTX_buf_noconst(c), ptr, arg); } cctx->M = arg; return 1; - case EVP_CTRL_CCM_GET_TAG: - if (!c->encrypt || !cctx->tag_set) + case EVP_CTRL_AEAD_GET_TAG: + if (!EVP_CIPHER_CTX_encrypting(c) || !cctx->tag_set) return 0; if (!CRYPTO_ccm128_tag(&cctx->ccm, ptr, (size_t)arg)) return 0; @@ -1802,7 +3516,7 @@ static int aes_ccm_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr) case EVP_CTRL_COPY: { EVP_CIPHER_CTX *out = ptr; - EVP_AES_CCM_CTX *cctx_out = out->cipher_data; + EVP_AES_CCM_CTX *cctx_out = EVP_C_DATA(EVP_AES_CCM_CTX,out); if (cctx->ccm.key) { if (cctx->ccm.key != &cctx->ks) return 0; @@ -1820,14 +3534,15 @@ static int aes_ccm_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr) static int aes_ccm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, const unsigned char *iv, int enc) { - EVP_AES_CCM_CTX *cctx = ctx->cipher_data; + EVP_AES_CCM_CTX *cctx = EVP_C_DATA(EVP_AES_CCM_CTX,ctx); if (!iv && !key) return 1; if (key) do { -# ifdef HWAES_CAPABLE +#ifdef HWAES_CAPABLE if (HWAES_CAPABLE) { - HWAES_set_encrypt_key(key, ctx->key_len * 8, &cctx->ks.ks); + HWAES_set_encrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8, + &cctx->ks.ks); CRYPTO_ccm128_init(&cctx->ccm, cctx->M, cctx->L, &cctx->ks, (block128_f) HWAES_encrypt); @@ -1835,43 +3550,105 @@ static int aes_ccm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, cctx->key_set = 1; break; } else -# endif -# ifdef VPAES_CAPABLE +#endif +#ifdef VPAES_CAPABLE if (VPAES_CAPABLE) { - vpaes_set_encrypt_key(key, ctx->key_len * 8, &cctx->ks.ks); + vpaes_set_encrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8, + &cctx->ks.ks); CRYPTO_ccm128_init(&cctx->ccm, cctx->M, cctx->L, &cctx->ks, (block128_f) vpaes_encrypt); cctx->str = NULL; cctx->key_set = 1; break; } -# endif - AES_set_encrypt_key(key, ctx->key_len * 8, &cctx->ks.ks); +#endif + AES_set_encrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8, + &cctx->ks.ks); CRYPTO_ccm128_init(&cctx->ccm, cctx->M, cctx->L, &cctx->ks, (block128_f) AES_encrypt); cctx->str = NULL; cctx->key_set = 1; } while (0); if (iv) { - memcpy(ctx->iv, iv, 15 - cctx->L); + memcpy(EVP_CIPHER_CTX_iv_noconst(ctx), iv, 15 - cctx->L); cctx->iv_set = 1; } return 1; } +static int aes_ccm_tls_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, + const unsigned char *in, size_t len) +{ + EVP_AES_CCM_CTX *cctx = EVP_C_DATA(EVP_AES_CCM_CTX,ctx); + CCM128_CONTEXT *ccm = &cctx->ccm; + /* Encrypt/decrypt must be performed in place */ + if (out != in || len < (EVP_CCM_TLS_EXPLICIT_IV_LEN + (size_t)cctx->M)) + return -1; + /* If encrypting set explicit IV from sequence number (start of AAD) */ + if (EVP_CIPHER_CTX_encrypting(ctx)) + memcpy(out, EVP_CIPHER_CTX_buf_noconst(ctx), + EVP_CCM_TLS_EXPLICIT_IV_LEN); + /* Get rest of IV from explicit IV */ + memcpy(EVP_CIPHER_CTX_iv_noconst(ctx) + EVP_CCM_TLS_FIXED_IV_LEN, in, + EVP_CCM_TLS_EXPLICIT_IV_LEN); + /* Correct length value */ + len -= EVP_CCM_TLS_EXPLICIT_IV_LEN + cctx->M; + if (CRYPTO_ccm128_setiv(ccm, EVP_CIPHER_CTX_iv_noconst(ctx), 15 - cctx->L, + len)) + return -1; + /* Use saved AAD */ + CRYPTO_ccm128_aad(ccm, EVP_CIPHER_CTX_buf_noconst(ctx), cctx->tls_aad_len); + /* Fix buffer to point to payload */ + in += EVP_CCM_TLS_EXPLICIT_IV_LEN; + out += EVP_CCM_TLS_EXPLICIT_IV_LEN; + if (EVP_CIPHER_CTX_encrypting(ctx)) { + if (cctx->str ? CRYPTO_ccm128_encrypt_ccm64(ccm, in, out, len, + cctx->str) : + CRYPTO_ccm128_encrypt(ccm, in, out, len)) + return -1; + if (!CRYPTO_ccm128_tag(ccm, out + len, cctx->M)) + return -1; + return len + EVP_CCM_TLS_EXPLICIT_IV_LEN + cctx->M; + } else { + if (cctx->str ? !CRYPTO_ccm128_decrypt_ccm64(ccm, in, out, len, + cctx->str) : + !CRYPTO_ccm128_decrypt(ccm, in, out, len)) { + unsigned char tag[16]; + if (CRYPTO_ccm128_tag(ccm, tag, cctx->M)) { + if (!CRYPTO_memcmp(tag, in + len, cctx->M)) + return len; + } + } + OPENSSL_cleanse(out, len); + return -1; + } +} + static int aes_ccm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t len) { - EVP_AES_CCM_CTX *cctx = ctx->cipher_data; + EVP_AES_CCM_CTX *cctx = EVP_C_DATA(EVP_AES_CCM_CTX,ctx); CCM128_CONTEXT *ccm = &cctx->ccm; /* If not set up, return error */ - if (!cctx->iv_set && !cctx->key_set) + if (!cctx->key_set) return -1; - if (!ctx->encrypt && !cctx->tag_set) + + if (cctx->tls_aad_len >= 0) + return aes_ccm_tls_cipher(ctx, out, in, len); + + /* EVP_*Final() doesn't return any data */ + if (in == NULL && out != NULL) + return 0; + + if (!cctx->iv_set) + return -1; + + if (!EVP_CIPHER_CTX_encrypting(ctx) && !cctx->tag_set) return -1; if (!out) { if (!in) { - if (CRYPTO_ccm128_setiv(ccm, ctx->iv, 15 - cctx->L, len)) + if (CRYPTO_ccm128_setiv(ccm, EVP_CIPHER_CTX_iv_noconst(ctx), + 15 - cctx->L, len)) return -1; cctx->len_set = 1; return len; @@ -1882,16 +3659,14 @@ static int aes_ccm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, CRYPTO_ccm128_aad(ccm, in, len); return len; } - /* EVP_*Final() doesn't return any data */ - if (!in) - return 0; /* If not set length yet do it */ if (!cctx->len_set) { - if (CRYPTO_ccm128_setiv(ccm, ctx->iv, 15 - cctx->L, len)) + if (CRYPTO_ccm128_setiv(ccm, EVP_CIPHER_CTX_iv_noconst(ctx), + 15 - cctx->L, len)) return -1; cctx->len_set = 1; } - if (ctx->encrypt) { + if (EVP_CIPHER_CTX_encrypting(ctx)) { if (cctx->str ? CRYPTO_ccm128_encrypt_ccm64(ccm, in, out, len, cctx->str) : CRYPTO_ccm128_encrypt(ccm, in, out, len)) @@ -1905,7 +3680,8 @@ static int aes_ccm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, !CRYPTO_ccm128_decrypt(ccm, in, out, len)) { unsigned char tag[16]; if (CRYPTO_ccm128_tag(ccm, tag, cctx->M)) { - if (!CRYPTO_memcmp(tag, ctx->buf, cctx->M)) + if (!CRYPTO_memcmp(tag, EVP_CIPHER_CTX_buf_noconst(ctx), + cctx->M)) rv = len; } } @@ -1916,18 +3692,17 @@ static int aes_ccm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, cctx->len_set = 0; return rv; } - } -# define aes_ccm_cleanup NULL +#define aes_ccm_cleanup NULL BLOCK_CIPHER_custom(NID_aes, 128, 1, 12, ccm, CCM, - EVP_CIPH_FLAG_FIPS | CUSTOM_FLAGS) + EVP_CIPH_FLAG_AEAD_CIPHER | CUSTOM_FLAGS) BLOCK_CIPHER_custom(NID_aes, 192, 1, 12, ccm, CCM, - EVP_CIPH_FLAG_FIPS | CUSTOM_FLAGS) + EVP_CIPH_FLAG_AEAD_CIPHER | CUSTOM_FLAGS) BLOCK_CIPHER_custom(NID_aes, 256, 1, 12, ccm, CCM, - EVP_CIPH_FLAG_FIPS | CUSTOM_FLAGS) -#endif + EVP_CIPH_FLAG_AEAD_CIPHER | CUSTOM_FLAGS) + typedef struct { union { double align; @@ -1940,20 +3715,22 @@ typedef struct { static int aes_wrap_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, const unsigned char *iv, int enc) { - EVP_AES_WRAP_CTX *wctx = ctx->cipher_data; + EVP_AES_WRAP_CTX *wctx = EVP_C_DATA(EVP_AES_WRAP_CTX,ctx); if (!iv && !key) return 1; if (key) { - if (ctx->encrypt) - AES_set_encrypt_key(key, ctx->key_len * 8, &wctx->ks.ks); + if (EVP_CIPHER_CTX_encrypting(ctx)) + AES_set_encrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8, + &wctx->ks.ks); else - AES_set_decrypt_key(key, ctx->key_len * 8, &wctx->ks.ks); + AES_set_decrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8, + &wctx->ks.ks); if (!iv) wctx->iv = NULL; } if (iv) { - memcpy(ctx->iv, iv, 8); - wctx->iv = ctx->iv; + memcpy(EVP_CIPHER_CTX_iv_noconst(ctx), iv, EVP_CIPHER_CTX_iv_length(ctx)); + wctx->iv = EVP_CIPHER_CTX_iv_noconst(ctx); } return 1; } @@ -1961,28 +3738,59 @@ static int aes_wrap_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, static int aes_wrap_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t inlen) { - EVP_AES_WRAP_CTX *wctx = ctx->cipher_data; + EVP_AES_WRAP_CTX *wctx = EVP_C_DATA(EVP_AES_WRAP_CTX,ctx); size_t rv; + /* AES wrap with padding has IV length of 4, without padding 8 */ + int pad = EVP_CIPHER_CTX_iv_length(ctx) == 4; + /* No final operation so always return zero length */ if (!in) return 0; - if (inlen % 8) + /* Input length must always be non-zero */ + if (!inlen) return -1; - if (ctx->encrypt && inlen < 8) + /* If decrypting need at least 16 bytes and multiple of 8 */ + if (!EVP_CIPHER_CTX_encrypting(ctx) && (inlen < 16 || inlen & 0x7)) return -1; - if (!ctx->encrypt && inlen < 16) + /* If not padding input must be multiple of 8 */ + if (!pad && inlen & 0x7) return -1; + if (is_partially_overlapping(out, in, inlen)) { + EVPerr(EVP_F_AES_WRAP_CIPHER, EVP_R_PARTIALLY_OVERLAPPING); + return 0; + } if (!out) { - if (ctx->encrypt) + if (EVP_CIPHER_CTX_encrypting(ctx)) { + /* If padding round up to multiple of 8 */ + if (pad) + inlen = (inlen + 7) / 8 * 8; + /* 8 byte prefix */ return inlen + 8; - else + } else { + /* + * If not padding output will be exactly 8 bytes smaller than + * input. If padding it will be at least 8 bytes smaller but we + * don't know how much. + */ return inlen - 8; + } + } + if (pad) { + if (EVP_CIPHER_CTX_encrypting(ctx)) + rv = CRYPTO_128_wrap_pad(&wctx->ks.ks, wctx->iv, + out, in, inlen, + (block128_f) AES_encrypt); + else + rv = CRYPTO_128_unwrap_pad(&wctx->ks.ks, wctx->iv, + out, in, inlen, + (block128_f) AES_decrypt); + } else { + if (EVP_CIPHER_CTX_encrypting(ctx)) + rv = CRYPTO_128_wrap(&wctx->ks.ks, wctx->iv, + out, in, inlen, (block128_f) AES_encrypt); + else + rv = CRYPTO_128_unwrap(&wctx->ks.ks, wctx->iv, + out, in, inlen, (block128_f) AES_decrypt); } - if (ctx->encrypt) - rv = CRYPTO_128_wrap(&wctx->ks.ks, wctx->iv, out, in, inlen, - (block128_f) AES_encrypt); - else - rv = CRYPTO_128_unwrap(&wctx->ks.ks, wctx->iv, out, in, inlen, - (block128_f) AES_decrypt); return rv ? (int)rv : -1; } @@ -2031,3 +3839,372 @@ const EVP_CIPHER *EVP_aes_256_wrap(void) { return &aes_256_wrap; } + +static const EVP_CIPHER aes_128_wrap_pad = { + NID_id_aes128_wrap_pad, + 8, 16, 4, WRAP_FLAGS, + aes_wrap_init_key, aes_wrap_cipher, + NULL, + sizeof(EVP_AES_WRAP_CTX), + NULL, NULL, NULL, NULL +}; + +const EVP_CIPHER *EVP_aes_128_wrap_pad(void) +{ + return &aes_128_wrap_pad; +} + +static const EVP_CIPHER aes_192_wrap_pad = { + NID_id_aes192_wrap_pad, + 8, 24, 4, WRAP_FLAGS, + aes_wrap_init_key, aes_wrap_cipher, + NULL, + sizeof(EVP_AES_WRAP_CTX), + NULL, NULL, NULL, NULL +}; + +const EVP_CIPHER *EVP_aes_192_wrap_pad(void) +{ + return &aes_192_wrap_pad; +} + +static const EVP_CIPHER aes_256_wrap_pad = { + NID_id_aes256_wrap_pad, + 8, 32, 4, WRAP_FLAGS, + aes_wrap_init_key, aes_wrap_cipher, + NULL, + sizeof(EVP_AES_WRAP_CTX), + NULL, NULL, NULL, NULL +}; + +const EVP_CIPHER *EVP_aes_256_wrap_pad(void) +{ + return &aes_256_wrap_pad; +} + +#ifndef OPENSSL_NO_OCB +static int aes_ocb_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr) +{ + EVP_AES_OCB_CTX *octx = EVP_C_DATA(EVP_AES_OCB_CTX,c); + EVP_CIPHER_CTX *newc; + EVP_AES_OCB_CTX *new_octx; + + switch (type) { + case EVP_CTRL_INIT: + octx->key_set = 0; + octx->iv_set = 0; + octx->ivlen = EVP_CIPHER_CTX_iv_length(c); + octx->iv = EVP_CIPHER_CTX_iv_noconst(c); + octx->taglen = 16; + octx->data_buf_len = 0; + octx->aad_buf_len = 0; + return 1; + + case EVP_CTRL_AEAD_SET_IVLEN: + /* IV len must be 1 to 15 */ + if (arg <= 0 || arg > 15) + return 0; + + octx->ivlen = arg; + return 1; + + case EVP_CTRL_AEAD_SET_TAG: + if (!ptr) { + /* Tag len must be 0 to 16 */ + if (arg < 0 || arg > 16) + return 0; + + octx->taglen = arg; + return 1; + } + if (arg != octx->taglen || EVP_CIPHER_CTX_encrypting(c)) + return 0; + memcpy(octx->tag, ptr, arg); + return 1; + + case EVP_CTRL_AEAD_GET_TAG: + if (arg != octx->taglen || !EVP_CIPHER_CTX_encrypting(c)) + return 0; + + memcpy(ptr, octx->tag, arg); + return 1; + + case EVP_CTRL_COPY: + newc = (EVP_CIPHER_CTX *)ptr; + new_octx = EVP_C_DATA(EVP_AES_OCB_CTX,newc); + return CRYPTO_ocb128_copy_ctx(&new_octx->ocb, &octx->ocb, + &new_octx->ksenc.ks, + &new_octx->ksdec.ks); + + default: + return -1; + + } +} + +# ifdef HWAES_CAPABLE +# ifdef HWAES_ocb_encrypt +void HWAES_ocb_encrypt(const unsigned char *in, unsigned char *out, + size_t blocks, const void *key, + size_t start_block_num, + unsigned char offset_i[16], + const unsigned char L_[][16], + unsigned char checksum[16]); +# else +# define HWAES_ocb_encrypt ((ocb128_f)NULL) +# endif +# ifdef HWAES_ocb_decrypt +void HWAES_ocb_decrypt(const unsigned char *in, unsigned char *out, + size_t blocks, const void *key, + size_t start_block_num, + unsigned char offset_i[16], + const unsigned char L_[][16], + unsigned char checksum[16]); +# else +# define HWAES_ocb_decrypt ((ocb128_f)NULL) +# endif +# endif + +static int aes_ocb_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, + const unsigned char *iv, int enc) +{ + EVP_AES_OCB_CTX *octx = EVP_C_DATA(EVP_AES_OCB_CTX,ctx); + if (!iv && !key) + return 1; + if (key) { + do { + /* + * We set both the encrypt and decrypt key here because decrypt + * needs both. We could possibly optimise to remove setting the + * decrypt for an encryption operation. + */ +# ifdef HWAES_CAPABLE + if (HWAES_CAPABLE) { + HWAES_set_encrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8, + &octx->ksenc.ks); + HWAES_set_decrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8, + &octx->ksdec.ks); + if (!CRYPTO_ocb128_init(&octx->ocb, + &octx->ksenc.ks, &octx->ksdec.ks, + (block128_f) HWAES_encrypt, + (block128_f) HWAES_decrypt, + enc ? HWAES_ocb_encrypt + : HWAES_ocb_decrypt)) + return 0; + break; + } +# endif +# ifdef VPAES_CAPABLE + if (VPAES_CAPABLE) { + vpaes_set_encrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8, + &octx->ksenc.ks); + vpaes_set_decrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8, + &octx->ksdec.ks); + if (!CRYPTO_ocb128_init(&octx->ocb, + &octx->ksenc.ks, &octx->ksdec.ks, + (block128_f) vpaes_encrypt, + (block128_f) vpaes_decrypt, + NULL)) + return 0; + break; + } +# endif + AES_set_encrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8, + &octx->ksenc.ks); + AES_set_decrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8, + &octx->ksdec.ks); + if (!CRYPTO_ocb128_init(&octx->ocb, + &octx->ksenc.ks, &octx->ksdec.ks, + (block128_f) AES_encrypt, + (block128_f) AES_decrypt, + NULL)) + return 0; + } + while (0); + + /* + * If we have an iv we can set it directly, otherwise use saved IV. + */ + if (iv == NULL && octx->iv_set) + iv = octx->iv; + if (iv) { + if (CRYPTO_ocb128_setiv(&octx->ocb, iv, octx->ivlen, octx->taglen) + != 1) + return 0; + octx->iv_set = 1; + } + octx->key_set = 1; + } else { + /* If key set use IV, otherwise copy */ + if (octx->key_set) + CRYPTO_ocb128_setiv(&octx->ocb, iv, octx->ivlen, octx->taglen); + else + memcpy(octx->iv, iv, octx->ivlen); + octx->iv_set = 1; + } + return 1; +} + +static int aes_ocb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, + const unsigned char *in, size_t len) +{ + unsigned char *buf; + int *buf_len; + int written_len = 0; + size_t trailing_len; + EVP_AES_OCB_CTX *octx = EVP_C_DATA(EVP_AES_OCB_CTX,ctx); + + /* If IV or Key not set then return error */ + if (!octx->iv_set) + return -1; + + if (!octx->key_set) + return -1; + + if (in != NULL) { + /* + * Need to ensure we are only passing full blocks to low level OCB + * routines. We do it here rather than in EVP_EncryptUpdate/ + * EVP_DecryptUpdate because we need to pass full blocks of AAD too + * and those routines don't support that + */ + + /* Are we dealing with AAD or normal data here? */ + if (out == NULL) { + buf = octx->aad_buf; + buf_len = &(octx->aad_buf_len); + } else { + buf = octx->data_buf; + buf_len = &(octx->data_buf_len); + + if (is_partially_overlapping(out + *buf_len, in, len)) { + EVPerr(EVP_F_AES_OCB_CIPHER, EVP_R_PARTIALLY_OVERLAPPING); + return 0; + } + } + + /* + * If we've got a partially filled buffer from a previous call then + * use that data first + */ + if (*buf_len > 0) { + unsigned int remaining; + + remaining = AES_BLOCK_SIZE - (*buf_len); + if (remaining > len) { + memcpy(buf + (*buf_len), in, len); + *(buf_len) += len; + return 0; + } + memcpy(buf + (*buf_len), in, remaining); + + /* + * If we get here we've filled the buffer, so process it + */ + len -= remaining; + in += remaining; + if (out == NULL) { + if (!CRYPTO_ocb128_aad(&octx->ocb, buf, AES_BLOCK_SIZE)) + return -1; + } else if (EVP_CIPHER_CTX_encrypting(ctx)) { + if (!CRYPTO_ocb128_encrypt(&octx->ocb, buf, out, + AES_BLOCK_SIZE)) + return -1; + } else { + if (!CRYPTO_ocb128_decrypt(&octx->ocb, buf, out, + AES_BLOCK_SIZE)) + return -1; + } + written_len = AES_BLOCK_SIZE; + *buf_len = 0; + if (out != NULL) + out += AES_BLOCK_SIZE; + } + + /* Do we have a partial block to handle at the end? */ + trailing_len = len % AES_BLOCK_SIZE; + + /* + * If we've got some full blocks to handle, then process these first + */ + if (len != trailing_len) { + if (out == NULL) { + if (!CRYPTO_ocb128_aad(&octx->ocb, in, len - trailing_len)) + return -1; + } else if (EVP_CIPHER_CTX_encrypting(ctx)) { + if (!CRYPTO_ocb128_encrypt + (&octx->ocb, in, out, len - trailing_len)) + return -1; + } else { + if (!CRYPTO_ocb128_decrypt + (&octx->ocb, in, out, len - trailing_len)) + return -1; + } + written_len += len - trailing_len; + in += len - trailing_len; + } + + /* Handle any trailing partial block */ + if (trailing_len > 0) { + memcpy(buf, in, trailing_len); + *buf_len = trailing_len; + } + + return written_len; + } else { + /* + * First of all empty the buffer of any partial block that we might + * have been provided - both for data and AAD + */ + if (octx->data_buf_len > 0) { + if (EVP_CIPHER_CTX_encrypting(ctx)) { + if (!CRYPTO_ocb128_encrypt(&octx->ocb, octx->data_buf, out, + octx->data_buf_len)) + return -1; + } else { + if (!CRYPTO_ocb128_decrypt(&octx->ocb, octx->data_buf, out, + octx->data_buf_len)) + return -1; + } + written_len = octx->data_buf_len; + octx->data_buf_len = 0; + } + if (octx->aad_buf_len > 0) { + if (!CRYPTO_ocb128_aad + (&octx->ocb, octx->aad_buf, octx->aad_buf_len)) + return -1; + octx->aad_buf_len = 0; + } + /* If decrypting then verify */ + if (!EVP_CIPHER_CTX_encrypting(ctx)) { + if (octx->taglen < 0) + return -1; + if (CRYPTO_ocb128_finish(&octx->ocb, + octx->tag, octx->taglen) != 0) + return -1; + octx->iv_set = 0; + return written_len; + } + /* If encrypting then just get the tag */ + if (CRYPTO_ocb128_tag(&octx->ocb, octx->tag, 16) != 1) + return -1; + /* Don't reuse the IV */ + octx->iv_set = 0; + return written_len; + } +} + +static int aes_ocb_cleanup(EVP_CIPHER_CTX *c) +{ + EVP_AES_OCB_CTX *octx = EVP_C_DATA(EVP_AES_OCB_CTX,c); + CRYPTO_ocb128_cleanup(&octx->ocb); + return 1; +} + +BLOCK_CIPHER_custom(NID_aes, 128, 16, 12, ocb, OCB, + EVP_CIPH_FLAG_AEAD_CIPHER | CUSTOM_FLAGS) +BLOCK_CIPHER_custom(NID_aes, 192, 16, 12, ocb, OCB, + EVP_CIPH_FLAG_AEAD_CIPHER | CUSTOM_FLAGS) +BLOCK_CIPHER_custom(NID_aes, 256, 16, 12, ocb, OCB, + EVP_CIPH_FLAG_AEAD_CIPHER | CUSTOM_FLAGS) +#endif /* OPENSSL_NO_OCB */ |