diff options
Diffstat (limited to 'crypto/evp/p5_crpt2.c')
| -rw-r--r-- | crypto/evp/p5_crpt2.c | 177 |
1 files changed, 54 insertions, 123 deletions
diff --git a/crypto/evp/p5_crpt2.c b/crypto/evp/p5_crpt2.c index 46fefa9ad584..e819eb9b47dc 100644 --- a/crypto/evp/p5_crpt2.c +++ b/crypto/evp/p5_crpt2.c @@ -1,106 +1,65 @@ -/* p5_crpt2.c */ /* - * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project - * 1999. - */ -/* ==================================================================== - * Copyright (c) 1999-2006 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 - * licensing@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. - * ==================================================================== - * - * This product includes cryptographic software written by Eric Young - * (eay@cryptsoft.com). This product includes software written by Tim - * Hudson (tjh@cryptsoft.com). + * Copyright 1999-2016 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 <stdio.h> #include <stdlib.h> -#include "cryptlib.h" -#if !defined(OPENSSL_NO_HMAC) && !defined(OPENSSL_NO_SHA) +#include "internal/cryptlib.h" # include <openssl/x509.h> # include <openssl/evp.h> # include <openssl/hmac.h> # include "evp_locl.h" /* set this to print out info about the keygen algorithm */ -/* #define DEBUG_PKCS5V2 */ +/* #define OPENSSL_DEBUG_PKCS5V2 */ -# ifdef DEBUG_PKCS5V2 +# ifdef OPENSSL_DEBUG_PKCS5V2 static void h__dump(const unsigned char *p, int len); # endif /* * This is an implementation of PKCS#5 v2.0 password based encryption key * derivation function PBKDF2. SHA1 version verified against test vectors - * posted by Peter Gutmann <pgut001@cs.auckland.ac.nz> to the PKCS-TNG - * <pkcs-tng@rsa.com> mailing list. + * posted by Peter Gutmann to the PKCS-TNG mailing list. */ int PKCS5_PBKDF2_HMAC(const char *pass, int passlen, const unsigned char *salt, int saltlen, int iter, const EVP_MD *digest, int keylen, unsigned char *out) { + const char *empty = ""; unsigned char digtmp[EVP_MAX_MD_SIZE], *p, itmp[4]; int cplen, j, k, tkeylen, mdlen; unsigned long i = 1; - HMAC_CTX hctx_tpl, hctx; + HMAC_CTX *hctx_tpl = NULL, *hctx = NULL; mdlen = EVP_MD_size(digest); if (mdlen < 0) return 0; - HMAC_CTX_init(&hctx_tpl); + hctx_tpl = HMAC_CTX_new(); + if (hctx_tpl == NULL) + return 0; p = out; tkeylen = keylen; - if (!pass) + if (pass == NULL) { + pass = empty; passlen = 0; - else if (passlen == -1) + } else if (passlen == -1) { passlen = strlen(pass); - if (!HMAC_Init_ex(&hctx_tpl, pass, passlen, digest, NULL)) { - HMAC_CTX_cleanup(&hctx_tpl); + } + if (!HMAC_Init_ex(hctx_tpl, pass, passlen, digest, NULL)) { + HMAC_CTX_free(hctx_tpl); + return 0; + } + hctx = HMAC_CTX_new(); + if (hctx == NULL) { + HMAC_CTX_free(hctx_tpl); return 0; } while (tkeylen) { @@ -116,31 +75,31 @@ int PKCS5_PBKDF2_HMAC(const char *pass, int passlen, itmp[1] = (unsigned char)((i >> 16) & 0xff); itmp[2] = (unsigned char)((i >> 8) & 0xff); itmp[3] = (unsigned char)(i & 0xff); - if (!HMAC_CTX_copy(&hctx, &hctx_tpl)) { - HMAC_CTX_cleanup(&hctx_tpl); + if (!HMAC_CTX_copy(hctx, hctx_tpl)) { + HMAC_CTX_free(hctx); + HMAC_CTX_free(hctx_tpl); return 0; } - if (!HMAC_Update(&hctx, salt, saltlen) - || !HMAC_Update(&hctx, itmp, 4) - || !HMAC_Final(&hctx, digtmp, NULL)) { - HMAC_CTX_cleanup(&hctx_tpl); - HMAC_CTX_cleanup(&hctx); + if (!HMAC_Update(hctx, salt, saltlen) + || !HMAC_Update(hctx, itmp, 4) + || !HMAC_Final(hctx, digtmp, NULL)) { + HMAC_CTX_free(hctx); + HMAC_CTX_free(hctx_tpl); return 0; } - HMAC_CTX_cleanup(&hctx); memcpy(p, digtmp, cplen); for (j = 1; j < iter; j++) { - if (!HMAC_CTX_copy(&hctx, &hctx_tpl)) { - HMAC_CTX_cleanup(&hctx_tpl); + if (!HMAC_CTX_copy(hctx, hctx_tpl)) { + HMAC_CTX_free(hctx); + HMAC_CTX_free(hctx_tpl); return 0; } - if (!HMAC_Update(&hctx, digtmp, mdlen) - || !HMAC_Final(&hctx, digtmp, NULL)) { - HMAC_CTX_cleanup(&hctx_tpl); - HMAC_CTX_cleanup(&hctx); + if (!HMAC_Update(hctx, digtmp, mdlen) + || !HMAC_Final(hctx, digtmp, NULL)) { + HMAC_CTX_free(hctx); + HMAC_CTX_free(hctx_tpl); return 0; } - HMAC_CTX_cleanup(&hctx); for (k = 0; k < cplen; k++) p[k] ^= digtmp[k]; } @@ -148,8 +107,9 @@ int PKCS5_PBKDF2_HMAC(const char *pass, int passlen, i++; p += cplen; } - HMAC_CTX_cleanup(&hctx_tpl); -# ifdef DEBUG_PKCS5V2 + HMAC_CTX_free(hctx); + HMAC_CTX_free(hctx_tpl); +# ifdef OPENSSL_DEBUG_PKCS5V2 fprintf(stderr, "Password:\n"); h__dump(pass, passlen); fprintf(stderr, "Salt:\n"); @@ -169,18 +129,6 @@ int PKCS5_PBKDF2_HMAC_SHA1(const char *pass, int passlen, keylen, out); } -# ifdef DO_TEST -main() -{ - unsigned char out[4]; - unsigned char salt[] = { 0x12, 0x34, 0x56, 0x78 }; - PKCS5_PBKDF2_HMAC_SHA1("password", -1, salt, 4, 5, 4, out); - fprintf(stderr, "Out %02X %02X %02X %02X\n", - out[0], out[1], out[2], out[3]); -} - -# endif - /* * Now the key derivation function itself. This is a bit evil because it has * to check the ASN1 parameters are valid: and there are quite a few of @@ -191,29 +139,21 @@ int PKCS5_v2_PBE_keyivgen(EVP_CIPHER_CTX *ctx, const char *pass, int passlen, ASN1_TYPE *param, const EVP_CIPHER *c, const EVP_MD *md, int en_de) { - const unsigned char *pbuf; - int plen; PBE2PARAM *pbe2 = NULL; const EVP_CIPHER *cipher; + EVP_PBE_KEYGEN *kdf; int rv = 0; - if (param == NULL || param->type != V_ASN1_SEQUENCE || - param->value.sequence == NULL) { - EVPerr(EVP_F_PKCS5_V2_PBE_KEYIVGEN, EVP_R_DECODE_ERROR); - goto err; - } - - pbuf = param->value.sequence->data; - plen = param->value.sequence->length; - if (!(pbe2 = d2i_PBE2PARAM(NULL, &pbuf, plen))) { + pbe2 = ASN1_TYPE_unpack_sequence(ASN1_ITEM_rptr(PBE2PARAM), param); + if (pbe2 == NULL) { EVPerr(EVP_F_PKCS5_V2_PBE_KEYIVGEN, EVP_R_DECODE_ERROR); goto err; } /* See if we recognise the key derivation function */ - - if (OBJ_obj2nid(pbe2->keyfunc->algorithm) != NID_id_pbkdf2) { + if (!EVP_PBE_find(EVP_PBE_TYPE_KDF, OBJ_obj2nid(pbe2->keyfunc->algorithm), + NULL, NULL, &kdf)) { EVPerr(EVP_F_PKCS5_V2_PBE_KEYIVGEN, EVP_R_UNSUPPORTED_KEY_DERIVATION_FUNCTION); goto err; @@ -237,8 +177,7 @@ int PKCS5_v2_PBE_keyivgen(EVP_CIPHER_CTX *ctx, const char *pass, int passlen, EVPerr(EVP_F_PKCS5_V2_PBE_KEYIVGEN, EVP_R_CIPHER_PARAMETER_ERROR); goto err; } - rv = PKCS5_v2_PBKDF2_keyivgen(ctx, pass, passlen, - pbe2->keyfunc->parameter, c, md, en_de); + rv = kdf(ctx, pass, passlen, pbe2->keyfunc->parameter, NULL, NULL, en_de); err: PBE2PARAM_free(pbe2); return rv; @@ -249,8 +188,7 @@ int PKCS5_v2_PBKDF2_keyivgen(EVP_CIPHER_CTX *ctx, const char *pass, const EVP_CIPHER *c, const EVP_MD *md, int en_de) { unsigned char *salt, key[EVP_MAX_KEY_LENGTH]; - const unsigned char *pbuf; - int saltlen, iter, plen; + int saltlen, iter; int rv = 0; unsigned int keylen = 0; int prf_nid, hmac_md_nid; @@ -266,15 +204,9 @@ int PKCS5_v2_PBKDF2_keyivgen(EVP_CIPHER_CTX *ctx, const char *pass, /* Decode parameter */ - if (!param || (param->type != V_ASN1_SEQUENCE)) { - EVPerr(EVP_F_PKCS5_V2_PBKDF2_KEYIVGEN, EVP_R_DECODE_ERROR); - goto err; - } - - pbuf = param->value.sequence->data; - plen = param->value.sequence->length; + kdf = ASN1_TYPE_unpack_sequence(ASN1_ITEM_rptr(PBKDF2PARAM), param); - if (!(kdf = d2i_PBKDF2PARAM(NULL, &pbuf, plen))) { + if (kdf == NULL) { EVPerr(EVP_F_PKCS5_V2_PBKDF2_KEYIVGEN, EVP_R_DECODE_ERROR); goto err; } @@ -323,7 +255,7 @@ int PKCS5_v2_PBKDF2_keyivgen(EVP_CIPHER_CTX *ctx, const char *pass, return rv; } -# ifdef DEBUG_PKCS5V2 +# ifdef OPENSSL_DEBUG_PKCS5V2 static void h__dump(const unsigned char *p, int len) { for (; len--; p++) @@ -331,4 +263,3 @@ static void h__dump(const unsigned char *p, int len) fprintf(stderr, "\n"); } # endif -#endif |