diff options
Diffstat (limited to 'openssl/ssl/s2_enc.c')
| -rw-r--r-- | openssl/ssl/s2_enc.c | 197 |
1 files changed, 0 insertions, 197 deletions
diff --git a/openssl/ssl/s2_enc.c b/openssl/ssl/s2_enc.c deleted file mode 100644 index 23eef72..0000000 --- a/openssl/ssl/s2_enc.c +++ /dev/null @@ -1,197 +0,0 @@ -/* ssl/s2_enc.c */ -/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) - * All rights reserved. - * - * This package is an SSL implementation written - * by Eric Young (eay@cryptsoft.com). - * The implementation was written so as to conform with Netscapes SSL. - * - * This library is free for commercial and non-commercial use as long as - * the following conditions are aheared to. The following conditions - * apply to all code found in this distribution, be it the RC4, RSA, - * lhash, DES, etc., code; not just the SSL code. The SSL documentation - * included with this distribution is covered by the same copyright terms - * except that the holder is Tim Hudson (tjh@cryptsoft.com). - * - * Copyright remains Eric Young's, and as such any Copyright notices in - * the code are not to be removed. - * If this package is used in a product, Eric Young should be given attribution - * as the author of the parts of the library used. - * This can be in the form of a textual message at program startup or - * in documentation (online or textual) provided with the package. - * - * 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 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 acknowledgement: - * "This product includes cryptographic software written by - * Eric Young (eay@cryptsoft.com)" - * The word 'cryptographic' can be left out if the rouines from the library - * being used are not cryptographic related :-). - * 4. If you include any Windows specific code (or a derivative thereof) from - * the apps directory (application code) you must include an acknowledgement: - * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" - * - * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``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 OR 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. - * - * The licence and distribution terms for any publically available version or - * derivative of this code cannot be changed. i.e. this code cannot simply be - * copied and put under another distribution licence - * [including the GNU Public Licence.] - */ - -#include "ssl_locl.h" -#ifndef OPENSSL_NO_SSL2 -# include <stdio.h> - -int ssl2_enc_init(SSL *s, int client) -{ - /* Max number of bytes needed */ - EVP_CIPHER_CTX *rs, *ws; - const EVP_CIPHER *c; - const EVP_MD *md; - int num; - - if (!ssl_cipher_get_evp(s->session, &c, &md, NULL, NULL, NULL)) { - ssl2_return_error(s, SSL2_PE_NO_CIPHER); - SSLerr(SSL_F_SSL2_ENC_INIT, SSL_R_PROBLEMS_MAPPING_CIPHER_FUNCTIONS); - return (0); - } - ssl_replace_hash(&s->read_hash, md); - ssl_replace_hash(&s->write_hash, md); - - if ((s->enc_read_ctx == NULL) && ((s->enc_read_ctx = (EVP_CIPHER_CTX *) - OPENSSL_malloc(sizeof(EVP_CIPHER_CTX))) - == NULL)) - goto err; - - /* - * make sure it's intialized in case the malloc for enc_write_ctx fails - * and we exit with an error - */ - rs = s->enc_read_ctx; - EVP_CIPHER_CTX_init(rs); - - if ((s->enc_write_ctx == NULL) && ((s->enc_write_ctx = (EVP_CIPHER_CTX *) - OPENSSL_malloc(sizeof - (EVP_CIPHER_CTX))) == - NULL)) - goto err; - - ws = s->enc_write_ctx; - EVP_CIPHER_CTX_init(ws); - - num = c->key_len; - s->s2->key_material_length = num * 2; - OPENSSL_assert(s->s2->key_material_length <= sizeof s->s2->key_material); - - if (ssl2_generate_key_material(s) <= 0) - return 0; - - OPENSSL_assert(c->iv_len <= (int)sizeof(s->session->key_arg)); - EVP_EncryptInit_ex(ws, c, NULL, - &(s->s2->key_material[(client) ? num : 0]), - s->session->key_arg); - EVP_DecryptInit_ex(rs, c, NULL, - &(s->s2->key_material[(client) ? 0 : num]), - s->session->key_arg); - s->s2->read_key = &(s->s2->key_material[(client) ? 0 : num]); - s->s2->write_key = &(s->s2->key_material[(client) ? num : 0]); - return (1); - err: - SSLerr(SSL_F_SSL2_ENC_INIT, ERR_R_MALLOC_FAILURE); - return (0); -} - -/* - * read/writes from s->s2->mac_data using length for encrypt and decrypt. - * It sets s->s2->padding and s->[rw]length if we are encrypting Returns 0 on - * error and 1 on success - */ -int ssl2_enc(SSL *s, int send) -{ - EVP_CIPHER_CTX *ds; - unsigned long l; - int bs; - - if (send) { - ds = s->enc_write_ctx; - l = s->s2->wlength; - } else { - ds = s->enc_read_ctx; - l = s->s2->rlength; - } - - /* check for NULL cipher */ - if (ds == NULL) - return 1; - - bs = ds->cipher->block_size; - /* - * This should be using (bs-1) and bs instead of 7 and 8, but what the - * hell. - */ - if (bs == 8) - l = (l + 7) / 8 * 8; - - if (EVP_Cipher(ds, s->s2->mac_data, s->s2->mac_data, l) < 1) - return 0; - - return 1; -} - -void ssl2_mac(SSL *s, unsigned char *md, int send) -{ - EVP_MD_CTX c; - unsigned char sequence[4], *p, *sec, *act; - unsigned long seq; - unsigned int len; - - if (send) { - seq = s->s2->write_sequence; - sec = s->s2->write_key; - len = s->s2->wact_data_length; - act = s->s2->wact_data; - } else { - seq = s->s2->read_sequence; - sec = s->s2->read_key; - len = s->s2->ract_data_length; - act = s->s2->ract_data; - } - - p = &(sequence[0]); - l2n(seq, p); - - /* There has to be a MAC algorithm. */ - EVP_MD_CTX_init(&c); - EVP_MD_CTX_copy(&c, s->read_hash); - EVP_DigestUpdate(&c, sec, EVP_CIPHER_CTX_key_length(s->enc_read_ctx)); - EVP_DigestUpdate(&c, act, len); - /* the above line also does the pad data */ - EVP_DigestUpdate(&c, sequence, 4); - EVP_DigestFinal_ex(&c, md, NULL); - EVP_MD_CTX_cleanup(&c); -} -#else /* !OPENSSL_NO_SSL2 */ - -# if PEDANTIC -static void *dummy = &dummy; -# endif - -#endif |