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-rw-r--r--crypto/openssh/cipher.c740
1 files changed, 0 insertions, 740 deletions
diff --git a/crypto/openssh/cipher.c b/crypto/openssh/cipher.c
deleted file mode 100644
index b5d38747ed803..0000000000000
--- a/crypto/openssh/cipher.c
+++ /dev/null
@@ -1,740 +0,0 @@
-/*
- * Author: Tatu Ylonen <ylo@cs.hut.fi>
- * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
- * All rights reserved
- *
- * As far as I am concerned, the code I have written for this software
- * can be used freely for any purpose. Any derived versions of this
- * software must be clearly marked as such, and if the derived work is
- * incompatible with the protocol description in the RFC file, it must be
- * called by a name other than "ssh" or "Secure Shell".
- *
- *
- * Copyright (c) 1999 Niels Provos. All rights reserved.
- * Copyright (c) 1999, 2000 Markus Friedl. 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.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS 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 AUTHOR 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.
- */
-
-#include "includes.h"
-RCSID("$OpenBSD: cipher.c,v 1.62 2002/11/21 22:45:31 markus Exp $");
-
-#include "xmalloc.h"
-#include "log.h"
-#include "cipher.h"
-
-#include <openssl/md5.h>
-
-#if OPENSSL_VERSION_NUMBER < 0x00906000L
-#define SSH_OLD_EVP
-#define EVP_CIPHER_CTX_get_app_data(e) ((e)->app_data)
-#endif
-
-#if OPENSSL_VERSION_NUMBER < 0x00907000L
-#include "rijndael.h"
-static const EVP_CIPHER *evp_rijndael(void);
-#endif
-static const EVP_CIPHER *evp_ssh1_3des(void);
-static const EVP_CIPHER *evp_ssh1_bf(void);
-
-struct Cipher {
- char *name;
- int number; /* for ssh1 only */
- u_int block_size;
- u_int key_len;
- const EVP_CIPHER *(*evptype)(void);
-} ciphers[] = {
- { "none", SSH_CIPHER_NONE, 8, 0, EVP_enc_null },
- { "des", SSH_CIPHER_DES, 8, 8, EVP_des_cbc },
- { "3des", SSH_CIPHER_3DES, 8, 16, evp_ssh1_3des },
- { "blowfish", SSH_CIPHER_BLOWFISH, 8, 32, evp_ssh1_bf },
-
- { "3des-cbc", SSH_CIPHER_SSH2, 8, 24, EVP_des_ede3_cbc },
- { "blowfish-cbc", SSH_CIPHER_SSH2, 8, 16, EVP_bf_cbc },
- { "cast128-cbc", SSH_CIPHER_SSH2, 8, 16, EVP_cast5_cbc },
- { "arcfour", SSH_CIPHER_SSH2, 8, 16, EVP_rc4 },
-#if OPENSSL_VERSION_NUMBER < 0x00907000L
- { "aes128-cbc", SSH_CIPHER_SSH2, 16, 16, evp_rijndael },
- { "aes192-cbc", SSH_CIPHER_SSH2, 16, 24, evp_rijndael },
- { "aes256-cbc", SSH_CIPHER_SSH2, 16, 32, evp_rijndael },
- { "rijndael-cbc@lysator.liu.se",
- SSH_CIPHER_SSH2, 16, 32, evp_rijndael },
-#else
- { "aes128-cbc", SSH_CIPHER_SSH2, 16, 16, EVP_aes_128_cbc },
- { "aes192-cbc", SSH_CIPHER_SSH2, 16, 24, EVP_aes_192_cbc },
- { "aes256-cbc", SSH_CIPHER_SSH2, 16, 32, EVP_aes_256_cbc },
- { "rijndael-cbc@lysator.liu.se",
- SSH_CIPHER_SSH2, 16, 32, EVP_aes_256_cbc },
-#endif
-
- { NULL, SSH_CIPHER_ILLEGAL, 0, 0, NULL }
-};
-
-/*--*/
-
-u_int
-cipher_blocksize(Cipher *c)
-{
- return (c->block_size);
-}
-
-u_int
-cipher_keylen(Cipher *c)
-{
- return (c->key_len);
-}
-
-u_int
-cipher_get_number(Cipher *c)
-{
- return (c->number);
-}
-
-u_int
-cipher_mask_ssh1(int client)
-{
- u_int mask = 0;
- mask |= 1 << SSH_CIPHER_3DES; /* Mandatory */
- mask |= 1 << SSH_CIPHER_BLOWFISH;
- if (client) {
- mask |= 1 << SSH_CIPHER_DES;
- }
- return mask;
-}
-
-Cipher *
-cipher_by_name(const char *name)
-{
- Cipher *c;
- for (c = ciphers; c->name != NULL; c++)
- if (strcasecmp(c->name, name) == 0)
- return c;
- return NULL;
-}
-
-Cipher *
-cipher_by_number(int id)
-{
- Cipher *c;
- for (c = ciphers; c->name != NULL; c++)
- if (c->number == id)
- return c;
- return NULL;
-}
-
-#define CIPHER_SEP ","
-int
-ciphers_valid(const char *names)
-{
- Cipher *c;
- char *ciphers, *cp;
- char *p;
-
- if (names == NULL || strcmp(names, "") == 0)
- return 0;
- ciphers = cp = xstrdup(names);
- for ((p = strsep(&cp, CIPHER_SEP)); p && *p != '\0';
- (p = strsep(&cp, CIPHER_SEP))) {
- c = cipher_by_name(p);
- if (c == NULL || c->number != SSH_CIPHER_SSH2) {
- debug("bad cipher %s [%s]", p, names);
- xfree(ciphers);
- return 0;
- } else {
- debug3("cipher ok: %s [%s]", p, names);
- }
- }
- debug3("ciphers ok: [%s]", names);
- xfree(ciphers);
- return 1;
-}
-
-/*
- * Parses the name of the cipher. Returns the number of the corresponding
- * cipher, or -1 on error.
- */
-
-int
-cipher_number(const char *name)
-{
- Cipher *c;
- if (name == NULL)
- return -1;
- c = cipher_by_name(name);
- return (c==NULL) ? -1 : c->number;
-}
-
-char *
-cipher_name(int id)
-{
- Cipher *c = cipher_by_number(id);
- return (c==NULL) ? "<unknown>" : c->name;
-}
-
-void
-cipher_init(CipherContext *cc, Cipher *cipher,
- const u_char *key, u_int keylen, const u_char *iv, u_int ivlen,
- int encrypt)
-{
- static int dowarn = 1;
-#ifdef SSH_OLD_EVP
- EVP_CIPHER *type;
-#else
- const EVP_CIPHER *type;
-#endif
- int klen;
-
- if (cipher->number == SSH_CIPHER_DES) {
- if (dowarn) {
- error("Warning: use of DES is strongly discouraged "
- "due to cryptographic weaknesses");
- dowarn = 0;
- }
- if (keylen > 8)
- keylen = 8;
- }
- cc->plaintext = (cipher->number == SSH_CIPHER_NONE);
-
- if (keylen < cipher->key_len)
- fatal("cipher_init: key length %d is insufficient for %s.",
- keylen, cipher->name);
- if (iv != NULL && ivlen < cipher->block_size)
- fatal("cipher_init: iv length %d is insufficient for %s.",
- ivlen, cipher->name);
- cc->cipher = cipher;
-
- type = (*cipher->evptype)();
-
- EVP_CIPHER_CTX_init(&cc->evp);
-#ifdef SSH_OLD_EVP
- if (type->key_len > 0 && type->key_len != keylen) {
- debug("cipher_init: set keylen (%d -> %d)",
- type->key_len, keylen);
- type->key_len = keylen;
- }
- EVP_CipherInit(&cc->evp, type, (u_char *)key, (u_char *)iv,
- (encrypt == CIPHER_ENCRYPT));
-#else
- if (EVP_CipherInit(&cc->evp, type, NULL, (u_char *)iv,
- (encrypt == CIPHER_ENCRYPT)) == 0)
- fatal("cipher_init: EVP_CipherInit failed for %s",
- cipher->name);
- klen = EVP_CIPHER_CTX_key_length(&cc->evp);
- if (klen > 0 && keylen != klen) {
- debug2("cipher_init: set keylen (%d -> %d)", klen, keylen);
- if (EVP_CIPHER_CTX_set_key_length(&cc->evp, keylen) == 0)
- fatal("cipher_init: set keylen failed (%d -> %d)",
- klen, keylen);
- }
- if (EVP_CipherInit(&cc->evp, NULL, (u_char *)key, NULL, -1) == 0)
- fatal("cipher_init: EVP_CipherInit: set key failed for %s",
- cipher->name);
-#endif
-}
-
-void
-cipher_crypt(CipherContext *cc, u_char *dest, const u_char *src, u_int len)
-{
- if (len % cc->cipher->block_size)
- fatal("cipher_encrypt: bad plaintext length %d", len);
-#ifdef SSH_OLD_EVP
- EVP_Cipher(&cc->evp, dest, (u_char *)src, len);
-#else
- if (EVP_Cipher(&cc->evp, dest, (u_char *)src, len) == 0)
- fatal("evp_crypt: EVP_Cipher failed");
-#endif
-}
-
-void
-cipher_cleanup(CipherContext *cc)
-{
-#ifdef SSH_OLD_EVP
- EVP_CIPHER_CTX_cleanup(&cc->evp);
-#else
- if (EVP_CIPHER_CTX_cleanup(&cc->evp) == 0)
- error("cipher_cleanup: EVP_CIPHER_CTX_cleanup failed");
-#endif
-}
-
-/*
- * Selects the cipher, and keys if by computing the MD5 checksum of the
- * passphrase and using the resulting 16 bytes as the key.
- */
-
-void
-cipher_set_key_string(CipherContext *cc, Cipher *cipher,
- const char *passphrase, int encrypt)
-{
- MD5_CTX md;
- u_char digest[16];
-
- MD5_Init(&md);
- MD5_Update(&md, (const u_char *)passphrase, strlen(passphrase));
- MD5_Final(digest, &md);
-
- cipher_init(cc, cipher, digest, 16, NULL, 0, encrypt);
-
- memset(digest, 0, sizeof(digest));
- memset(&md, 0, sizeof(md));
-}
-
-/* Implementations for other non-EVP ciphers */
-
-/*
- * This is used by SSH1:
- *
- * What kind of triple DES are these 2 routines?
- *
- * Why is there a redundant initialization vector?
- *
- * If only iv3 was used, then, this would till effect have been
- * outer-cbc. However, there is also a private iv1 == iv2 which
- * perhaps makes differential analysis easier. On the other hand, the
- * private iv1 probably makes the CRC-32 attack ineffective. This is a
- * result of that there is no longer any known iv1 to use when
- * choosing the X block.
- */
-struct ssh1_3des_ctx
-{
- EVP_CIPHER_CTX k1, k2, k3;
-};
-
-static int
-ssh1_3des_init(EVP_CIPHER_CTX *ctx, const u_char *key, const u_char *iv,
- int enc)
-{
- struct ssh1_3des_ctx *c;
- u_char *k1, *k2, *k3;
-
- if ((c = EVP_CIPHER_CTX_get_app_data(ctx)) == NULL) {
- c = xmalloc(sizeof(*c));
- EVP_CIPHER_CTX_set_app_data(ctx, c);
- }
- if (key == NULL)
- return (1);
- if (enc == -1)
- enc = ctx->encrypt;
- k1 = k2 = k3 = (u_char *) key;
- k2 += 8;
- if (EVP_CIPHER_CTX_key_length(ctx) >= 16+8) {
- if (enc)
- k3 += 16;
- else
- k1 += 16;
- }
- EVP_CIPHER_CTX_init(&c->k1);
- EVP_CIPHER_CTX_init(&c->k2);
- EVP_CIPHER_CTX_init(&c->k3);
-#ifdef SSH_OLD_EVP
- EVP_CipherInit(&c->k1, EVP_des_cbc(), k1, NULL, enc);
- EVP_CipherInit(&c->k2, EVP_des_cbc(), k2, NULL, !enc);
- EVP_CipherInit(&c->k3, EVP_des_cbc(), k3, NULL, enc);
-#else
- if (EVP_CipherInit(&c->k1, EVP_des_cbc(), k1, NULL, enc) == 0 ||
- EVP_CipherInit(&c->k2, EVP_des_cbc(), k2, NULL, !enc) == 0 ||
- EVP_CipherInit(&c->k3, EVP_des_cbc(), k3, NULL, enc) == 0) {
- memset(c, 0, sizeof(*c));
- xfree(c);
- EVP_CIPHER_CTX_set_app_data(ctx, NULL);
- return (0);
- }
-#endif
- return (1);
-}
-
-static int
-ssh1_3des_cbc(EVP_CIPHER_CTX *ctx, u_char *dest, const u_char *src, u_int len)
-{
- struct ssh1_3des_ctx *c;
-
- if ((c = EVP_CIPHER_CTX_get_app_data(ctx)) == NULL) {
- error("ssh1_3des_cbc: no context");
- return (0);
- }
-#ifdef SSH_OLD_EVP
- EVP_Cipher(&c->k1, dest, (u_char *)src, len);
- EVP_Cipher(&c->k2, dest, dest, len);
- EVP_Cipher(&c->k3, dest, dest, len);
-#else
- if (EVP_Cipher(&c->k1, dest, (u_char *)src, len) == 0 ||
- EVP_Cipher(&c->k2, dest, dest, len) == 0 ||
- EVP_Cipher(&c->k3, dest, dest, len) == 0)
- return (0);
-#endif
- return (1);
-}
-
-static int
-ssh1_3des_cleanup(EVP_CIPHER_CTX *ctx)
-{
- struct ssh1_3des_ctx *c;
-
- if ((c = EVP_CIPHER_CTX_get_app_data(ctx)) != NULL) {
- memset(c, 0, sizeof(*c));
- xfree(c);
- EVP_CIPHER_CTX_set_app_data(ctx, NULL);
- }
- return (1);
-}
-
-static const EVP_CIPHER *
-evp_ssh1_3des(void)
-{
- static EVP_CIPHER ssh1_3des;
-
- memset(&ssh1_3des, 0, sizeof(EVP_CIPHER));
- ssh1_3des.nid = NID_undef;
- ssh1_3des.block_size = 8;
- ssh1_3des.iv_len = 0;
- ssh1_3des.key_len = 16;
- ssh1_3des.init = ssh1_3des_init;
- ssh1_3des.cleanup = ssh1_3des_cleanup;
- ssh1_3des.do_cipher = ssh1_3des_cbc;
-#ifndef SSH_OLD_EVP
- ssh1_3des.flags = EVP_CIPH_CBC_MODE | EVP_CIPH_VARIABLE_LENGTH;
-#endif
- return (&ssh1_3des);
-}
-
-/*
- * SSH1 uses a variation on Blowfish, all bytes must be swapped before
- * and after encryption/decryption. Thus the swap_bytes stuff (yuk).
- */
-static void
-swap_bytes(const u_char *src, u_char *dst, int n)
-{
- u_char c[4];
-
- /* Process 4 bytes every lap. */
- for (n = n / 4; n > 0; n--) {
- c[3] = *src++;
- c[2] = *src++;
- c[1] = *src++;
- c[0] = *src++;
-
- *dst++ = c[0];
- *dst++ = c[1];
- *dst++ = c[2];
- *dst++ = c[3];
- }
-}
-
-#ifdef SSH_OLD_EVP
-static void bf_ssh1_init (EVP_CIPHER_CTX * ctx, const unsigned char *key,
- const unsigned char *iv, int enc)
-{
- if (iv != NULL)
- memcpy (&(ctx->oiv[0]), iv, 8);
- memcpy (&(ctx->iv[0]), &(ctx->oiv[0]), 8);
- if (key != NULL)
- BF_set_key (&(ctx->c.bf_ks), EVP_CIPHER_CTX_key_length (ctx),
- key);
-}
-#endif
-static int (*orig_bf)(EVP_CIPHER_CTX *, u_char *, const u_char *, u_int) = NULL;
-
-static int
-bf_ssh1_cipher(EVP_CIPHER_CTX *ctx, u_char *out, const u_char *in, u_int len)
-{
- int ret;
-
- swap_bytes(in, out, len);
- ret = (*orig_bf)(ctx, out, out, len);
- swap_bytes(out, out, len);
- return (ret);
-}
-
-static const EVP_CIPHER *
-evp_ssh1_bf(void)
-{
- static EVP_CIPHER ssh1_bf;
-
- memcpy(&ssh1_bf, EVP_bf_cbc(), sizeof(EVP_CIPHER));
- orig_bf = ssh1_bf.do_cipher;
- ssh1_bf.nid = NID_undef;
-#ifdef SSH_OLD_EVP
- ssh1_bf.init = bf_ssh1_init;
-#endif
- ssh1_bf.do_cipher = bf_ssh1_cipher;
- ssh1_bf.key_len = 32;
- return (&ssh1_bf);
-}
-
-#if OPENSSL_VERSION_NUMBER < 0x00907000L
-/* RIJNDAEL */
-#define RIJNDAEL_BLOCKSIZE 16
-struct ssh_rijndael_ctx
-{
- rijndael_ctx r_ctx;
- u_char r_iv[RIJNDAEL_BLOCKSIZE];
-};
-
-static int
-ssh_rijndael_init(EVP_CIPHER_CTX *ctx, const u_char *key, const u_char *iv,
- int enc)
-{
- struct ssh_rijndael_ctx *c;
-
- if ((c = EVP_CIPHER_CTX_get_app_data(ctx)) == NULL) {
- c = xmalloc(sizeof(*c));
- EVP_CIPHER_CTX_set_app_data(ctx, c);
- }
- if (key != NULL) {
- if (enc == -1)
- enc = ctx->encrypt;
- rijndael_set_key(&c->r_ctx, (u_char *)key,
- 8*EVP_CIPHER_CTX_key_length(ctx), enc);
- }
- if (iv != NULL)
- memcpy(c->r_iv, iv, RIJNDAEL_BLOCKSIZE);
- return (1);
-}
-
-static int
-ssh_rijndael_cbc(EVP_CIPHER_CTX *ctx, u_char *dest, const u_char *src,
- u_int len)
-{
- struct ssh_rijndael_ctx *c;
- u_char buf[RIJNDAEL_BLOCKSIZE];
- u_char *cprev, *cnow, *plain, *ivp;
- int i, j, blocks = len / RIJNDAEL_BLOCKSIZE;
-
- if (len == 0)
- return (1);
- if (len % RIJNDAEL_BLOCKSIZE)
- fatal("ssh_rijndael_cbc: bad len %d", len);
- if ((c = EVP_CIPHER_CTX_get_app_data(ctx)) == NULL) {
- error("ssh_rijndael_cbc: no context");
- return (0);
- }
- if (ctx->encrypt) {
- cnow = dest;
- plain = (u_char *)src;
- cprev = c->r_iv;
- for (i = 0; i < blocks; i++, plain+=RIJNDAEL_BLOCKSIZE,
- cnow+=RIJNDAEL_BLOCKSIZE) {
- for (j = 0; j < RIJNDAEL_BLOCKSIZE; j++)
- buf[j] = plain[j] ^ cprev[j];
- rijndael_encrypt(&c->r_ctx, buf, cnow);
- cprev = cnow;
- }
- memcpy(c->r_iv, cprev, RIJNDAEL_BLOCKSIZE);
- } else {
- cnow = (u_char *) (src+len-RIJNDAEL_BLOCKSIZE);
- plain = dest+len-RIJNDAEL_BLOCKSIZE;
-
- memcpy(buf, cnow, RIJNDAEL_BLOCKSIZE);
- for (i = blocks; i > 0; i--, cnow-=RIJNDAEL_BLOCKSIZE,
- plain-=RIJNDAEL_BLOCKSIZE) {
- rijndael_decrypt(&c->r_ctx, cnow, plain);
- ivp = (i == 1) ? c->r_iv : cnow-RIJNDAEL_BLOCKSIZE;
- for (j = 0; j < RIJNDAEL_BLOCKSIZE; j++)
- plain[j] ^= ivp[j];
- }
- memcpy(c->r_iv, buf, RIJNDAEL_BLOCKSIZE);
- }
- return (1);
-}
-
-static int
-ssh_rijndael_cleanup(EVP_CIPHER_CTX *ctx)
-{
- struct ssh_rijndael_ctx *c;
-
- if ((c = EVP_CIPHER_CTX_get_app_data(ctx)) != NULL) {
- memset(c, 0, sizeof(*c));
- xfree(c);
- EVP_CIPHER_CTX_set_app_data(ctx, NULL);
- }
- return (1);
-}
-
-static const EVP_CIPHER *
-evp_rijndael(void)
-{
- static EVP_CIPHER rijndal_cbc;
-
- memset(&rijndal_cbc, 0, sizeof(EVP_CIPHER));
- rijndal_cbc.nid = NID_undef;
- rijndal_cbc.block_size = RIJNDAEL_BLOCKSIZE;
- rijndal_cbc.iv_len = RIJNDAEL_BLOCKSIZE;
- rijndal_cbc.key_len = 16;
- rijndal_cbc.init = ssh_rijndael_init;
- rijndal_cbc.cleanup = ssh_rijndael_cleanup;
- rijndal_cbc.do_cipher = ssh_rijndael_cbc;
-#ifndef SSH_OLD_EVP
- rijndal_cbc.flags = EVP_CIPH_CBC_MODE | EVP_CIPH_VARIABLE_LENGTH |
- EVP_CIPH_ALWAYS_CALL_INIT | EVP_CIPH_CUSTOM_IV;
-#endif
- return (&rijndal_cbc);
-}
-#endif
-
-/*
- * Exports an IV from the CipherContext required to export the key
- * state back from the unprivileged child to the privileged parent
- * process.
- */
-
-int
-cipher_get_keyiv_len(CipherContext *cc)
-{
- Cipher *c = cc->cipher;
- int ivlen;
-
- if (c->number == SSH_CIPHER_3DES)
- ivlen = 24;
- else
- ivlen = EVP_CIPHER_CTX_iv_length(&cc->evp);
- return (ivlen);
-}
-
-void
-cipher_get_keyiv(CipherContext *cc, u_char *iv, u_int len)
-{
- Cipher *c = cc->cipher;
- u_char *civ = NULL;
- int evplen;
-
- switch (c->number) {
- case SSH_CIPHER_SSH2:
- case SSH_CIPHER_DES:
- case SSH_CIPHER_BLOWFISH:
- evplen = EVP_CIPHER_CTX_iv_length(&cc->evp);
- if (evplen == 0)
- return;
- if (evplen != len)
- fatal("%s: wrong iv length %d != %d", __func__,
- evplen, len);
-
-#if OPENSSL_VERSION_NUMBER < 0x00907000L
- if (c->evptype == evp_rijndael) {
- struct ssh_rijndael_ctx *aesc;
-
- aesc = EVP_CIPHER_CTX_get_app_data(&cc->evp);
- if (aesc == NULL)
- fatal("%s: no rijndael context", __func__);
- civ = aesc->r_iv;
- } else
-#endif
- {
- civ = cc->evp.iv;
- }
- break;
- case SSH_CIPHER_3DES: {
- struct ssh1_3des_ctx *desc;
- if (len != 24)
- fatal("%s: bad 3des iv length: %d", __func__, len);
- desc = EVP_CIPHER_CTX_get_app_data(&cc->evp);
- if (desc == NULL)
- fatal("%s: no 3des context", __func__);
- debug3("%s: Copying 3DES IV", __func__);
- memcpy(iv, desc->k1.iv, 8);
- memcpy(iv + 8, desc->k2.iv, 8);
- memcpy(iv + 16, desc->k3.iv, 8);
- return;
- }
- default:
- fatal("%s: bad cipher %d", __func__, c->number);
- }
- memcpy(iv, civ, len);
-}
-
-void
-cipher_set_keyiv(CipherContext *cc, u_char *iv)
-{
- Cipher *c = cc->cipher;
- u_char *div = NULL;
- int evplen = 0;
-
- switch (c->number) {
- case SSH_CIPHER_SSH2:
- case SSH_CIPHER_DES:
- case SSH_CIPHER_BLOWFISH:
- evplen = EVP_CIPHER_CTX_iv_length(&cc->evp);
- if (evplen == 0)
- return;
-
-#if OPENSSL_VERSION_NUMBER < 0x00907000L
- if (c->evptype == evp_rijndael) {
- struct ssh_rijndael_ctx *aesc;
-
- aesc = EVP_CIPHER_CTX_get_app_data(&cc->evp);
- if (aesc == NULL)
- fatal("%s: no rijndael context", __func__);
- div = aesc->r_iv;
- } else
-#endif
- {
- div = cc->evp.iv;
- }
- break;
- case SSH_CIPHER_3DES: {
- struct ssh1_3des_ctx *desc;
- desc = EVP_CIPHER_CTX_get_app_data(&cc->evp);
- if (desc == NULL)
- fatal("%s: no 3des context", __func__);
- debug3("%s: Installed 3DES IV", __func__);
- memcpy(desc->k1.iv, iv, 8);
- memcpy(desc->k2.iv, iv + 8, 8);
- memcpy(desc->k3.iv, iv + 16, 8);
- return;
- }
- default:
- fatal("%s: bad cipher %d", __func__, c->number);
- }
- memcpy(div, iv, evplen);
-}
-
-#if OPENSSL_VERSION_NUMBER < 0x00907000L
-#define EVP_X_STATE(evp) &(evp).c
-#define EVP_X_STATE_LEN(evp) sizeof((evp).c)
-#else
-#define EVP_X_STATE(evp) (evp).cipher_data
-#define EVP_X_STATE_LEN(evp) (evp).cipher->ctx_size
-#endif
-
-int
-cipher_get_keycontext(CipherContext *cc, u_char *dat)
-{
- Cipher *c = cc->cipher;
- int plen = 0;
-
- if (c->evptype == EVP_rc4) {
- plen = EVP_X_STATE_LEN(cc->evp);
- if (dat == NULL)
- return (plen);
- memcpy(dat, EVP_X_STATE(cc->evp), plen);
- }
- return (plen);
-}
-
-void
-cipher_set_keycontext(CipherContext *cc, u_char *dat)
-{
- Cipher *c = cc->cipher;
- int plen;
-
- if (c->evptype == EVP_rc4) {
- plen = EVP_X_STATE_LEN(cc->evp);
- memcpy(EVP_X_STATE(cc->evp), dat, plen);
- }
-}