diff options
author | 2016-09-03 11:33:34 +0000 | |
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committer | 2016-09-03 11:33:34 +0000 | |
commit | 8204a9859e29f943f9d45fa3c5bacf005da87a21 (patch) | |
tree | 3d72799b17122728ed1ce817d171df956c52a633 /lib/libssl/src/ssl/t1_enc.c | |
parent | Remove NULL pointer checks before calls to free(). (diff) | |
download | wireguard-openbsd-8204a9859e29f943f9d45fa3c5bacf005da87a21.tar.xz wireguard-openbsd-8204a9859e29f943f9d45fa3c5bacf005da87a21.zip |
Remove the libssl/src directory
Diffstat (limited to 'lib/libssl/src/ssl/t1_enc.c')
-rw-r--r-- | lib/libssl/src/ssl/t1_enc.c | 1419 |
1 files changed, 0 insertions, 1419 deletions
diff --git a/lib/libssl/src/ssl/t1_enc.c b/lib/libssl/src/ssl/t1_enc.c deleted file mode 100644 index 53570b2d4f7..00000000000 --- a/lib/libssl/src/ssl/t1_enc.c +++ /dev/null @@ -1,1419 +0,0 @@ -/* $OpenBSD: t1_enc.c,v 1.85 2016/04/28 16:39:45 jsing Exp $ */ -/* 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.] - */ -/* ==================================================================== - * Copyright (c) 1998-2007 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. - * ==================================================================== - * - * This product includes cryptographic software written by Eric Young - * (eay@cryptsoft.com). This product includes software written by Tim - * Hudson (tjh@cryptsoft.com). - * - */ -/* ==================================================================== - * Copyright 2005 Nokia. All rights reserved. - * - * The portions of the attached software ("Contribution") is developed by - * Nokia Corporation and is licensed pursuant to the OpenSSL open source - * license. - * - * The Contribution, originally written by Mika Kousa and Pasi Eronen of - * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites - * support (see RFC 4279) to OpenSSL. - * - * No patent licenses or other rights except those expressly stated in - * the OpenSSL open source license shall be deemed granted or received - * expressly, by implication, estoppel, or otherwise. - * - * No assurances are provided by Nokia that the Contribution does not - * infringe the patent or other intellectual property rights of any third - * party or that the license provides you with all the necessary rights - * to make use of the Contribution. - * - * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN - * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA - * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY - * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR - * OTHERWISE. - */ - -#include <stdio.h> - -#include "ssl_locl.h" - -#include <openssl/evp.h> -#include <openssl/hmac.h> -#include <openssl/md5.h> - -void -tls1_cleanup_key_block(SSL *s) -{ - if (s->s3->tmp.key_block != NULL) { - explicit_bzero(s->s3->tmp.key_block, - s->s3->tmp.key_block_length); - free(s->s3->tmp.key_block); - s->s3->tmp.key_block = NULL; - } - s->s3->tmp.key_block_length = 0; -} - -int -tls1_init_finished_mac(SSL *s) -{ - BIO_free(s->s3->handshake_buffer); - tls1_free_digest_list(s); - - s->s3->handshake_buffer = BIO_new(BIO_s_mem()); - if (s->s3->handshake_buffer == NULL) - return (0); - - (void)BIO_set_close(s->s3->handshake_buffer, BIO_CLOSE); - - return (1); -} - -void -tls1_free_digest_list(SSL *s) -{ - int i; - - if (s == NULL) - return; - - if (s->s3->handshake_dgst == NULL) - return; - for (i = 0; i < SSL_MAX_DIGEST; i++) { - if (s->s3->handshake_dgst[i]) - EVP_MD_CTX_destroy(s->s3->handshake_dgst[i]); - } - free(s->s3->handshake_dgst); - s->s3->handshake_dgst = NULL; -} - -void -tls1_finish_mac(SSL *s, const unsigned char *buf, int len) -{ - if (s->s3->handshake_buffer && - !(s->s3->flags & TLS1_FLAGS_KEEP_HANDSHAKE)) { - BIO_write(s->s3->handshake_buffer, (void *)buf, len); - } else { - int i; - for (i = 0; i < SSL_MAX_DIGEST; i++) { - if (s->s3->handshake_dgst[i]!= NULL) - EVP_DigestUpdate(s->s3->handshake_dgst[i], buf, len); - } - } -} - -int -tls1_digest_cached_records(SSL *s) -{ - int i; - long mask; - const EVP_MD *md; - long hdatalen; - void *hdata; - - tls1_free_digest_list(s); - - s->s3->handshake_dgst = calloc(SSL_MAX_DIGEST, sizeof(EVP_MD_CTX *)); - if (s->s3->handshake_dgst == NULL) { - SSLerr(SSL_F_SSL3_DIGEST_CACHED_RECORDS, ERR_R_MALLOC_FAILURE); - return 0; - } - hdatalen = BIO_get_mem_data(s->s3->handshake_buffer, &hdata); - if (hdatalen <= 0) { - SSLerr(SSL_F_SSL3_DIGEST_CACHED_RECORDS, - SSL_R_BAD_HANDSHAKE_LENGTH); - return 0; - } - - /* Loop through bits of the algorithm2 field and create MD contexts. */ - for (i = 0; ssl_get_handshake_digest(i, &mask, &md); i++) { - if ((mask & ssl_get_algorithm2(s)) && md) { - s->s3->handshake_dgst[i] = EVP_MD_CTX_create(); - if (s->s3->handshake_dgst[i] == NULL) { - SSLerr(SSL_F_SSL3_DIGEST_CACHED_RECORDS, - ERR_R_MALLOC_FAILURE); - return 0; - } - if (!EVP_DigestInit_ex(s->s3->handshake_dgst[i], - md, NULL)) { - EVP_MD_CTX_destroy(s->s3->handshake_dgst[i]); - return 0; - } - if (!EVP_DigestUpdate(s->s3->handshake_dgst[i], hdata, - hdatalen)) - return 0; - } - } - - if (!(s->s3->flags & TLS1_FLAGS_KEEP_HANDSHAKE)) { - BIO_free(s->s3->handshake_buffer); - s->s3->handshake_buffer = NULL; - } - - return 1; -} - -void -tls1_record_sequence_increment(unsigned char *seq) -{ - int i; - - for (i = SSL3_SEQUENCE_SIZE - 1; i >= 0; i--) { - if (++seq[i] != 0) - break; - } -} - -/* seed1 through seed5 are virtually concatenated */ -static int -tls1_P_hash(const EVP_MD *md, const unsigned char *sec, int sec_len, - const void *seed1, int seed1_len, const void *seed2, int seed2_len, - const void *seed3, int seed3_len, const void *seed4, int seed4_len, - const void *seed5, int seed5_len, unsigned char *out, int olen) -{ - int chunk; - size_t j; - EVP_MD_CTX ctx, ctx_tmp; - EVP_PKEY *mac_key; - unsigned char A1[EVP_MAX_MD_SIZE]; - size_t A1_len; - int ret = 0; - - chunk = EVP_MD_size(md); - OPENSSL_assert(chunk >= 0); - - EVP_MD_CTX_init(&ctx); - EVP_MD_CTX_init(&ctx_tmp); - mac_key = EVP_PKEY_new_mac_key(EVP_PKEY_HMAC, NULL, sec, sec_len); - if (!mac_key) - goto err; - if (!EVP_DigestSignInit(&ctx, NULL, md, NULL, mac_key)) - goto err; - if (!EVP_DigestSignInit(&ctx_tmp, NULL, md, NULL, mac_key)) - goto err; - if (seed1 && !EVP_DigestSignUpdate(&ctx, seed1, seed1_len)) - goto err; - if (seed2 && !EVP_DigestSignUpdate(&ctx, seed2, seed2_len)) - goto err; - if (seed3 && !EVP_DigestSignUpdate(&ctx, seed3, seed3_len)) - goto err; - if (seed4 && !EVP_DigestSignUpdate(&ctx, seed4, seed4_len)) - goto err; - if (seed5 && !EVP_DigestSignUpdate(&ctx, seed5, seed5_len)) - goto err; - if (!EVP_DigestSignFinal(&ctx, A1, &A1_len)) - goto err; - - for (;;) { - /* Reinit mac contexts */ - if (!EVP_DigestSignInit(&ctx, NULL, md, NULL, mac_key)) - goto err; - if (!EVP_DigestSignInit(&ctx_tmp, NULL, md, NULL, mac_key)) - goto err; - if (!EVP_DigestSignUpdate(&ctx, A1, A1_len)) - goto err; - if (!EVP_DigestSignUpdate(&ctx_tmp, A1, A1_len)) - goto err; - if (seed1 && !EVP_DigestSignUpdate(&ctx, seed1, seed1_len)) - goto err; - if (seed2 && !EVP_DigestSignUpdate(&ctx, seed2, seed2_len)) - goto err; - if (seed3 && !EVP_DigestSignUpdate(&ctx, seed3, seed3_len)) - goto err; - if (seed4 && !EVP_DigestSignUpdate(&ctx, seed4, seed4_len)) - goto err; - if (seed5 && !EVP_DigestSignUpdate(&ctx, seed5, seed5_len)) - goto err; - - if (olen > chunk) { - if (!EVP_DigestSignFinal(&ctx, out, &j)) - goto err; - out += j; - olen -= j; - /* calc the next A1 value */ - if (!EVP_DigestSignFinal(&ctx_tmp, A1, &A1_len)) - goto err; - } else { - /* last one */ - if (!EVP_DigestSignFinal(&ctx, A1, &A1_len)) - goto err; - memcpy(out, A1, olen); - break; - } - } - ret = 1; - -err: - EVP_PKEY_free(mac_key); - EVP_MD_CTX_cleanup(&ctx); - EVP_MD_CTX_cleanup(&ctx_tmp); - explicit_bzero(A1, sizeof(A1)); - return ret; -} - -/* seed1 through seed5 are virtually concatenated */ -static int -tls1_PRF(long digest_mask, const void *seed1, int seed1_len, const void *seed2, - int seed2_len, const void *seed3, int seed3_len, const void *seed4, - int seed4_len, const void *seed5, int seed5_len, const unsigned char *sec, - int slen, unsigned char *out1, unsigned char *out2, int olen) -{ - int len, i, idx, count; - const unsigned char *S1; - long m; - const EVP_MD *md; - int ret = 0; - - /* Count number of digests and partition sec evenly */ - count = 0; - for (idx = 0; ssl_get_handshake_digest(idx, &m, &md); idx++) { - if ((m << TLS1_PRF_DGST_SHIFT) & digest_mask) - count++; - } - if (count == 0) { - SSLerr(SSL_F_TLS1_PRF, - SSL_R_SSL_HANDSHAKE_FAILURE); - goto err; - } - len = slen / count; - if (count == 1) - slen = 0; - S1 = sec; - memset(out1, 0, olen); - for (idx = 0; ssl_get_handshake_digest(idx, &m, &md); idx++) { - if ((m << TLS1_PRF_DGST_SHIFT) & digest_mask) { - if (!md) { - SSLerr(SSL_F_TLS1_PRF, - SSL_R_UNSUPPORTED_DIGEST_TYPE); - goto err; - } - if (!tls1_P_hash(md , S1, len + (slen&1), seed1, - seed1_len, seed2, seed2_len, seed3, seed3_len, - seed4, seed4_len, seed5, seed5_len, out2, olen)) - goto err; - S1 += len; - for (i = 0; i < olen; i++) { - out1[i] ^= out2[i]; - } - } - } - ret = 1; - -err: - return ret; -} - -static int -tls1_generate_key_block(SSL *s, unsigned char *km, unsigned char *tmp, int num) -{ - int ret; - - ret = tls1_PRF(ssl_get_algorithm2(s), - TLS_MD_KEY_EXPANSION_CONST, TLS_MD_KEY_EXPANSION_CONST_SIZE, - s->s3->server_random, SSL3_RANDOM_SIZE, - s->s3->client_random, SSL3_RANDOM_SIZE, - NULL, 0, NULL, 0, - s->session->master_key, s->session->master_key_length, - km, tmp, num); - return ret; -} - -/* - * tls1_aead_ctx_init allocates aead_ctx, if needed. It returns 1 on success - * and 0 on failure. - */ -static int -tls1_aead_ctx_init(SSL_AEAD_CTX **aead_ctx) -{ - if (*aead_ctx != NULL) { - EVP_AEAD_CTX_cleanup(&(*aead_ctx)->ctx); - return (1); - } - - *aead_ctx = malloc(sizeof(SSL_AEAD_CTX)); - if (*aead_ctx == NULL) { - SSLerr(SSL_F_TLS1_AEAD_CTX_INIT, ERR_R_MALLOC_FAILURE); - return (0); - } - - return (1); -} - -static int -tls1_change_cipher_state_aead(SSL *s, char is_read, const unsigned char *key, - unsigned key_len, const unsigned char *iv, unsigned iv_len) -{ - const EVP_AEAD *aead = s->s3->tmp.new_aead; - SSL_AEAD_CTX *aead_ctx; - - if (is_read) { - if (!tls1_aead_ctx_init(&s->aead_read_ctx)) - return 0; - aead_ctx = s->aead_read_ctx; - } else { - if (!tls1_aead_ctx_init(&s->aead_write_ctx)) - return 0; - aead_ctx = s->aead_write_ctx; - } - - if (!EVP_AEAD_CTX_init(&aead_ctx->ctx, aead, key, key_len, - EVP_AEAD_DEFAULT_TAG_LENGTH, NULL)) - return (0); - if (iv_len > sizeof(aead_ctx->fixed_nonce)) { - SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE_AEAD, - ERR_R_INTERNAL_ERROR); - return (0); - } - memcpy(aead_ctx->fixed_nonce, iv, iv_len); - aead_ctx->fixed_nonce_len = iv_len; - aead_ctx->variable_nonce_len = 8; /* always the case, currently. */ - aead_ctx->variable_nonce_in_record = - (s->s3->tmp.new_cipher->algorithm2 & - SSL_CIPHER_ALGORITHM2_VARIABLE_NONCE_IN_RECORD) != 0; - aead_ctx->xor_fixed_nonce = - s->s3->tmp.new_cipher->algorithm_enc == SSL_CHACHA20POLY1305; - aead_ctx->tag_len = EVP_AEAD_max_overhead(aead); - - if (aead_ctx->xor_fixed_nonce) { - if (aead_ctx->fixed_nonce_len != EVP_AEAD_nonce_length(aead) || - aead_ctx->variable_nonce_len > EVP_AEAD_nonce_length(aead)) { - SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE_AEAD, - ERR_R_INTERNAL_ERROR); - return (0); - } - } else { - if (aead_ctx->variable_nonce_len + aead_ctx->fixed_nonce_len != - EVP_AEAD_nonce_length(aead)) { - SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE_AEAD, - ERR_R_INTERNAL_ERROR); - return (0); - } - } - - return (1); -} - -/* - * tls1_change_cipher_state_cipher performs the work needed to switch cipher - * states when using EVP_CIPHER. The argument is_read is true iff this function - * is being called due to reading, as opposed to writing, a ChangeCipherSpec - * message. In order to support export ciphersuites, use_client_keys indicates - * whether the key material provided is in the "client write" direction. - */ -static int -tls1_change_cipher_state_cipher(SSL *s, char is_read, char use_client_keys, - const unsigned char *mac_secret, unsigned int mac_secret_size, - const unsigned char *key, unsigned int key_len, const unsigned char *iv, - unsigned int iv_len) -{ - EVP_CIPHER_CTX *cipher_ctx; - const EVP_CIPHER *cipher; - EVP_MD_CTX *mac_ctx; - const EVP_MD *mac; - int mac_type; - - cipher = s->s3->tmp.new_sym_enc; - mac = s->s3->tmp.new_hash; - mac_type = s->s3->tmp.new_mac_pkey_type; - - if (is_read) { - if (s->s3->tmp.new_cipher->algorithm2 & TLS1_STREAM_MAC) - s->mac_flags |= SSL_MAC_FLAG_READ_MAC_STREAM; - else - s->mac_flags &= ~SSL_MAC_FLAG_READ_MAC_STREAM; - - EVP_CIPHER_CTX_free(s->enc_read_ctx); - s->enc_read_ctx = NULL; - EVP_MD_CTX_destroy(s->read_hash); - s->read_hash = NULL; - - if ((cipher_ctx = EVP_CIPHER_CTX_new()) == NULL) - goto err; - s->enc_read_ctx = cipher_ctx; - if ((mac_ctx = EVP_MD_CTX_create()) == NULL) - goto err; - s->read_hash = mac_ctx; - } else { - if (s->s3->tmp.new_cipher->algorithm2 & TLS1_STREAM_MAC) - s->mac_flags |= SSL_MAC_FLAG_WRITE_MAC_STREAM; - else - s->mac_flags &= ~SSL_MAC_FLAG_WRITE_MAC_STREAM; - - /* - * DTLS fragments retain a pointer to the compression, cipher - * and hash contexts, so that it can restore state in order - * to perform retransmissions. As such, we cannot free write - * contexts that are used for DTLS - these are instead freed - * by DTLS when its frees a ChangeCipherSpec fragment. - */ - if (!SSL_IS_DTLS(s)) { - EVP_CIPHER_CTX_free(s->enc_write_ctx); - s->enc_write_ctx = NULL; - EVP_MD_CTX_destroy(s->write_hash); - s->write_hash = NULL; - } - if ((cipher_ctx = EVP_CIPHER_CTX_new()) == NULL) - goto err; - s->enc_write_ctx = cipher_ctx; - if ((mac_ctx = EVP_MD_CTX_create()) == NULL) - goto err; - s->write_hash = mac_ctx; - } - - if (EVP_CIPHER_mode(cipher) == EVP_CIPH_GCM_MODE) { - EVP_CipherInit_ex(cipher_ctx, cipher, NULL, key, NULL, - !is_read); - EVP_CIPHER_CTX_ctrl(cipher_ctx, EVP_CTRL_GCM_SET_IV_FIXED, - iv_len, (unsigned char *)iv); - } else - EVP_CipherInit_ex(cipher_ctx, cipher, NULL, key, iv, !is_read); - - if (!(EVP_CIPHER_flags(cipher) & EVP_CIPH_FLAG_AEAD_CIPHER)) { - EVP_PKEY *mac_key = EVP_PKEY_new_mac_key(mac_type, NULL, - mac_secret, mac_secret_size); - if (mac_key == NULL) - goto err; - EVP_DigestSignInit(mac_ctx, NULL, mac, NULL, mac_key); - EVP_PKEY_free(mac_key); - } else if (mac_secret_size > 0) { - /* Needed for "composite" AEADs, such as RC4-HMAC-MD5 */ - EVP_CIPHER_CTX_ctrl(cipher_ctx, EVP_CTRL_AEAD_SET_MAC_KEY, - mac_secret_size, (unsigned char *)mac_secret); - } - - if (s->s3->tmp.new_cipher->algorithm_enc == SSL_eGOST2814789CNT) { - int nid; - if (s->s3->tmp.new_cipher->algorithm2 & SSL_HANDSHAKE_MAC_GOST94) - nid = NID_id_Gost28147_89_CryptoPro_A_ParamSet; - else - nid = NID_id_tc26_gost_28147_param_Z; - - EVP_CIPHER_CTX_ctrl(cipher_ctx, EVP_CTRL_GOST_SET_SBOX, nid, 0); - if (s->s3->tmp.new_cipher->algorithm_mac == SSL_GOST89MAC) - EVP_MD_CTX_ctrl(mac_ctx, EVP_MD_CTRL_GOST_SET_SBOX, nid, 0); - } - - return (1); - -err: - SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE_CIPHER, ERR_R_MALLOC_FAILURE); - return (0); -} - -int -tls1_change_cipher_state(SSL *s, int which) -{ - const unsigned char *client_write_mac_secret, *server_write_mac_secret; - const unsigned char *client_write_key, *server_write_key; - const unsigned char *client_write_iv, *server_write_iv; - const unsigned char *mac_secret, *key, *iv; - int mac_secret_size, key_len, iv_len; - unsigned char *key_block, *seq; - const EVP_CIPHER *cipher; - const EVP_AEAD *aead; - char is_read, use_client_keys; - - - cipher = s->s3->tmp.new_sym_enc; - aead = s->s3->tmp.new_aead; - - /* - * is_read is true if we have just read a ChangeCipherSpec message, - * that is we need to update the read cipherspec. Otherwise we have - * just written one. - */ - is_read = (which & SSL3_CC_READ) != 0; - - /* - * use_client_keys is true if we wish to use the keys for the "client - * write" direction. This is the case if we're a client sending a - * ChangeCipherSpec, or a server reading a client's ChangeCipherSpec. - */ - use_client_keys = ((which == SSL3_CHANGE_CIPHER_CLIENT_WRITE) || - (which == SSL3_CHANGE_CIPHER_SERVER_READ)); - - - /* - * Reset sequence number to zero - for DTLS this is handled in - * dtls1_reset_seq_numbers(). - */ - if (!SSL_IS_DTLS(s)) { - seq = is_read ? s->s3->read_sequence : s->s3->write_sequence; - memset(seq, 0, SSL3_SEQUENCE_SIZE); - } - - if (aead != NULL) { - key_len = EVP_AEAD_key_length(aead); - iv_len = SSL_CIPHER_AEAD_FIXED_NONCE_LEN(s->s3->tmp.new_cipher); - } else { - key_len = EVP_CIPHER_key_length(cipher); - iv_len = EVP_CIPHER_iv_length(cipher); - - /* If GCM mode only part of IV comes from PRF. */ - if (EVP_CIPHER_mode(cipher) == EVP_CIPH_GCM_MODE) - iv_len = EVP_GCM_TLS_FIXED_IV_LEN; - } - - mac_secret_size = s->s3->tmp.new_mac_secret_size; - - key_block = s->s3->tmp.key_block; - client_write_mac_secret = key_block; - key_block += mac_secret_size; - server_write_mac_secret = key_block; - key_block += mac_secret_size; - client_write_key = key_block; - key_block += key_len; - server_write_key = key_block; - key_block += key_len; - client_write_iv = key_block; - key_block += iv_len; - server_write_iv = key_block; - key_block += iv_len; - - if (use_client_keys) { - mac_secret = client_write_mac_secret; - key = client_write_key; - iv = client_write_iv; - } else { - mac_secret = server_write_mac_secret; - key = server_write_key; - iv = server_write_iv; - } - - if (key_block - s->s3->tmp.key_block != s->s3->tmp.key_block_length) { - SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE, ERR_R_INTERNAL_ERROR); - goto err2; - } - - if (is_read) { - memcpy(s->s3->read_mac_secret, mac_secret, mac_secret_size); - s->s3->read_mac_secret_size = mac_secret_size; - } else { - memcpy(s->s3->write_mac_secret, mac_secret, mac_secret_size); - s->s3->write_mac_secret_size = mac_secret_size; - } - - if (aead != NULL) { - return tls1_change_cipher_state_aead(s, is_read, key, key_len, - iv, iv_len); - } - - return tls1_change_cipher_state_cipher(s, is_read, use_client_keys, - mac_secret, mac_secret_size, key, key_len, iv, iv_len); - -err2: - return (0); -} - -int -tls1_setup_key_block(SSL *s) -{ - unsigned char *key_block, *tmp_block = NULL; - int mac_type = NID_undef, mac_secret_size = 0; - int key_block_len, key_len, iv_len; - const EVP_CIPHER *cipher = NULL; - const EVP_AEAD *aead = NULL; - const EVP_MD *mac = NULL; - int ret = 0; - - if (s->s3->tmp.key_block_length != 0) - return (1); - - if (s->session->cipher && - (s->session->cipher->algorithm2 & SSL_CIPHER_ALGORITHM2_AEAD)) { - if (!ssl_cipher_get_evp_aead(s->session, &aead)) { - SSLerr(SSL_F_TLS1_SETUP_KEY_BLOCK, - SSL_R_CIPHER_OR_HASH_UNAVAILABLE); - return (0); - } - key_len = EVP_AEAD_key_length(aead); - iv_len = SSL_CIPHER_AEAD_FIXED_NONCE_LEN(s->session->cipher); - } else { - if (!ssl_cipher_get_evp(s->session, &cipher, &mac, &mac_type, - &mac_secret_size)) { - SSLerr(SSL_F_TLS1_SETUP_KEY_BLOCK, - SSL_R_CIPHER_OR_HASH_UNAVAILABLE); - return (0); - } - key_len = EVP_CIPHER_key_length(cipher); - iv_len = EVP_CIPHER_iv_length(cipher); - - /* If GCM mode only part of IV comes from PRF. */ - if (EVP_CIPHER_mode(cipher) == EVP_CIPH_GCM_MODE) - iv_len = EVP_GCM_TLS_FIXED_IV_LEN; - } - - s->s3->tmp.new_aead = aead; - s->s3->tmp.new_sym_enc = cipher; - s->s3->tmp.new_hash = mac; - s->s3->tmp.new_mac_pkey_type = mac_type; - s->s3->tmp.new_mac_secret_size = mac_secret_size; - - tls1_cleanup_key_block(s); - - if ((key_block = reallocarray(NULL, mac_secret_size + key_len + iv_len, - 2)) == NULL) { - SSLerr(SSL_F_TLS1_SETUP_KEY_BLOCK, ERR_R_MALLOC_FAILURE); - goto err; - } - key_block_len = (mac_secret_size + key_len + iv_len) * 2; - - s->s3->tmp.key_block_length = key_block_len; - s->s3->tmp.key_block = key_block; - - if ((tmp_block = malloc(key_block_len)) == NULL) { - SSLerr(SSL_F_TLS1_SETUP_KEY_BLOCK, ERR_R_MALLOC_FAILURE); - goto err; - } - - if (!tls1_generate_key_block(s, key_block, tmp_block, key_block_len)) - goto err; - - if (!(s->options & SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS) && - s->method->version <= TLS1_VERSION) { - /* - * Enable vulnerability countermeasure for CBC ciphers with - * known-IV problem (http://www.openssl.org/~bodo/tls-cbc.txt) - */ - s->s3->need_empty_fragments = 1; - - if (s->session->cipher != NULL) { - if (s->session->cipher->algorithm_enc == SSL_eNULL) - s->s3->need_empty_fragments = 0; - -#ifndef OPENSSL_NO_RC4 - if (s->session->cipher->algorithm_enc == SSL_RC4) - s->s3->need_empty_fragments = 0; -#endif - } - } - - ret = 1; - -err: - if (tmp_block) { - explicit_bzero(tmp_block, key_block_len); - free(tmp_block); - } - return (ret); -} - -/* tls1_enc encrypts/decrypts the record in |s->wrec| / |s->rrec|, respectively. - * - * Returns: - * 0: (in non-constant time) if the record is publically invalid (i.e. too - * short etc). - * 1: if the record's padding is valid / the encryption was successful. - * -1: if the record's padding/AEAD-authenticator is invalid or, if sending, - * an internal error occured. - */ -int -tls1_enc(SSL *s, int send) -{ - const SSL_AEAD_CTX *aead; - const EVP_CIPHER *enc; - EVP_CIPHER_CTX *ds; - SSL3_RECORD *rec; - unsigned char *seq; - unsigned long l; - int bs, i, j, k, pad = 0, ret, mac_size = 0; - - if (send) { - aead = s->aead_write_ctx; - rec = &s->s3->wrec; - seq = s->s3->write_sequence; - } else { - aead = s->aead_read_ctx; - rec = &s->s3->rrec; - seq = s->s3->read_sequence; - } - - if (aead) { - unsigned char ad[13], *in, *out, nonce[16]; - size_t out_len, pad_len = 0; - unsigned int nonce_used; - - if (SSL_IS_DTLS(s)) { - dtls1_build_sequence_number(ad, seq, - send ? s->d1->w_epoch : s->d1->r_epoch); - } else { - memcpy(ad, seq, SSL3_SEQUENCE_SIZE); - tls1_record_sequence_increment(seq); - } - - ad[8] = rec->type; - ad[9] = (unsigned char)(s->version >> 8); - ad[10] = (unsigned char)(s->version); - - if (aead->variable_nonce_len > 8 || - aead->variable_nonce_len > sizeof(nonce)) - return -1; - - if (aead->xor_fixed_nonce) { - if (aead->fixed_nonce_len > sizeof(nonce) || - aead->variable_nonce_len > aead->fixed_nonce_len) - return -1; /* Should never happen. */ - pad_len = aead->fixed_nonce_len - aead->variable_nonce_len; - } else { - if (aead->fixed_nonce_len + - aead->variable_nonce_len > sizeof(nonce)) - return -1; /* Should never happen. */ - } - - if (send) { - size_t len = rec->length; - size_t eivlen = 0; - in = rec->input; - out = rec->data; - - if (aead->xor_fixed_nonce) { - /* - * The sequence number is left zero - * padded, then xored with the fixed - * nonce. - */ - memset(nonce, 0, pad_len); - memcpy(nonce + pad_len, ad, - aead->variable_nonce_len); - for (i = 0; i < aead->fixed_nonce_len; i++) - nonce[i] ^= aead->fixed_nonce[i]; - nonce_used = aead->fixed_nonce_len; - } else { - /* - * When sending we use the sequence number as - * the variable part of the nonce. - */ - memcpy(nonce, aead->fixed_nonce, - aead->fixed_nonce_len); - nonce_used = aead->fixed_nonce_len; - memcpy(nonce + nonce_used, ad, - aead->variable_nonce_len); - nonce_used += aead->variable_nonce_len; - } - - /* - * In do_ssl3_write, rec->input is moved forward by - * variable_nonce_len in order to leave space for the - * variable nonce. Thus we can copy the sequence number - * bytes into place without overwriting any of the - * plaintext. - */ - if (aead->variable_nonce_in_record) { - memcpy(out, ad, aead->variable_nonce_len); - len -= aead->variable_nonce_len; - eivlen = aead->variable_nonce_len; - } - - ad[11] = len >> 8; - ad[12] = len & 0xff; - - if (!EVP_AEAD_CTX_seal(&aead->ctx, - out + eivlen, &out_len, len + aead->tag_len, nonce, - nonce_used, in + eivlen, len, ad, sizeof(ad))) - return -1; - if (aead->variable_nonce_in_record) - out_len += aead->variable_nonce_len; - } else { - /* receive */ - size_t len = rec->length; - - if (rec->data != rec->input) - return -1; /* internal error - should never happen. */ - out = in = rec->input; - - if (len < aead->variable_nonce_len) - return 0; - - if (aead->xor_fixed_nonce) { - /* - * The sequence number is left zero - * padded, then xored with the fixed - * nonce. - */ - memset(nonce, 0, pad_len); - memcpy(nonce + pad_len, ad, - aead->variable_nonce_len); - for (i = 0; i < aead->fixed_nonce_len; i++) - nonce[i] ^= aead->fixed_nonce[i]; - nonce_used = aead->fixed_nonce_len; - } else { - memcpy(nonce, aead->fixed_nonce, - aead->fixed_nonce_len); - nonce_used = aead->fixed_nonce_len; - - memcpy(nonce + nonce_used, - aead->variable_nonce_in_record ? in : ad, - aead->variable_nonce_len); - nonce_used += aead->variable_nonce_len; - } - - if (aead->variable_nonce_in_record) { - in += aead->variable_nonce_len; - len -= aead->variable_nonce_len; - out += aead->variable_nonce_len; - } - - if (len < aead->tag_len) - return 0; - len -= aead->tag_len; - - ad[11] = len >> 8; - ad[12] = len & 0xff; - - if (!EVP_AEAD_CTX_open(&aead->ctx, out, &out_len, len, - nonce, nonce_used, in, len + aead->tag_len, ad, - sizeof(ad))) - return -1; - - rec->data = rec->input = out; - } - - rec->length = out_len; - - return 1; - } - - if (send) { - if (EVP_MD_CTX_md(s->write_hash)) { - int n = EVP_MD_CTX_size(s->write_hash); - OPENSSL_assert(n >= 0); - } - ds = s->enc_write_ctx; - if (s->enc_write_ctx == NULL) - enc = NULL; - else { - int ivlen = 0; - enc = EVP_CIPHER_CTX_cipher(s->enc_write_ctx); - if (SSL_USE_EXPLICIT_IV(s) && - EVP_CIPHER_mode(enc) == EVP_CIPH_CBC_MODE) - ivlen = EVP_CIPHER_iv_length(enc); - if (ivlen > 1) { - if (rec->data != rec->input) { -#ifdef DEBUG - /* we can't write into the input stream: - * Can this ever happen?? (steve) - */ - fprintf(stderr, - "%s:%d: rec->data != rec->input\n", - __FILE__, __LINE__); -#endif - } else - arc4random_buf(rec->input, ivlen); - } - } - } else { - if (EVP_MD_CTX_md(s->read_hash)) { - int n = EVP_MD_CTX_size(s->read_hash); - OPENSSL_assert(n >= 0); - } - ds = s->enc_read_ctx; - if (s->enc_read_ctx == NULL) - enc = NULL; - else - enc = EVP_CIPHER_CTX_cipher(s->enc_read_ctx); - } - - if ((s->session == NULL) || (ds == NULL) || (enc == NULL)) { - memmove(rec->data, rec->input, rec->length); - rec->input = rec->data; - ret = 1; - } else { - l = rec->length; - bs = EVP_CIPHER_block_size(ds->cipher); - - if (EVP_CIPHER_flags(ds->cipher) & EVP_CIPH_FLAG_AEAD_CIPHER) { - unsigned char buf[13]; - - if (SSL_IS_DTLS(s)) { - dtls1_build_sequence_number(buf, seq, - send ? s->d1->w_epoch : s->d1->r_epoch); - } else { - memcpy(buf, seq, SSL3_SEQUENCE_SIZE); - tls1_record_sequence_increment(seq); - } - - buf[8] = rec->type; - buf[9] = (unsigned char)(s->version >> 8); - buf[10] = (unsigned char)(s->version); - buf[11] = rec->length >> 8; - buf[12] = rec->length & 0xff; - pad = EVP_CIPHER_CTX_ctrl(ds, EVP_CTRL_AEAD_TLS1_AAD, 13, buf); - if (send) { - l += pad; - rec->length += pad; - } - } else if ((bs != 1) && send) { - i = bs - ((int)l % bs); - - /* Add weird padding of upto 256 bytes */ - - /* we need to add 'i' padding bytes of value j */ - j = i - 1; - for (k = (int)l; k < (int)(l + i); k++) - rec->input[k] = j; - l += i; - rec->length += i; - } - - if (!send) { - if (l == 0 || l % bs != 0) - return 0; - } - - i = EVP_Cipher(ds, rec->data, rec->input, l); - if ((EVP_CIPHER_flags(ds->cipher) & - EVP_CIPH_FLAG_CUSTOM_CIPHER) ? (i < 0) : (i == 0)) - return -1; /* AEAD can fail to verify MAC */ - if (EVP_CIPHER_mode(enc) == EVP_CIPH_GCM_MODE && !send) { - rec->data += EVP_GCM_TLS_EXPLICIT_IV_LEN; - rec->input += EVP_GCM_TLS_EXPLICIT_IV_LEN; - rec->length -= EVP_GCM_TLS_EXPLICIT_IV_LEN; - } - - ret = 1; - if (EVP_MD_CTX_md(s->read_hash) != NULL) - mac_size = EVP_MD_CTX_size(s->read_hash); - if ((bs != 1) && !send) - ret = tls1_cbc_remove_padding(s, rec, bs, mac_size); - if (pad && !send) - rec->length -= pad; - } - return ret; -} - -int -tls1_cert_verify_mac(SSL *s, int md_nid, unsigned char *out) -{ - EVP_MD_CTX ctx, *d = NULL; - unsigned int ret; - int i; - - if (s->s3->handshake_buffer) - if (!tls1_digest_cached_records(s)) - return 0; - - for (i = 0; i < SSL_MAX_DIGEST; i++) { - if (s->s3->handshake_dgst[i] && - EVP_MD_CTX_type(s->s3->handshake_dgst[i]) == md_nid) { - d = s->s3->handshake_dgst[i]; - break; - } - } - if (d == NULL) { - SSLerr(SSL_F_TLS1_CERT_VERIFY_MAC, SSL_R_NO_REQUIRED_DIGEST); - return 0; - } - - EVP_MD_CTX_init(&ctx); - if (!EVP_MD_CTX_copy_ex(&ctx, d)) - return 0; - EVP_DigestFinal_ex(&ctx, out, &ret); - EVP_MD_CTX_cleanup(&ctx); - - return ((int)ret); -} - -int -tls1_final_finish_mac(SSL *s, const char *str, int slen, unsigned char *out) -{ - unsigned int i; - EVP_MD_CTX ctx; - unsigned char buf[2*EVP_MAX_MD_SIZE]; - unsigned char *q, buf2[12]; - int idx; - long mask; - int err = 0; - const EVP_MD *md; - - q = buf; - - if (s->s3->handshake_buffer) - if (!tls1_digest_cached_records(s)) - return 0; - - EVP_MD_CTX_init(&ctx); - - for (idx = 0; ssl_get_handshake_digest(idx, &mask, &md); idx++) { - if (ssl_get_algorithm2(s) & mask) { - int hashsize = EVP_MD_size(md); - EVP_MD_CTX *hdgst = s->s3->handshake_dgst[idx]; - if (!hdgst || hashsize < 0 || - hashsize > (int)(sizeof buf - (size_t)(q - buf))) { - /* internal error: 'buf' is too small for this cipersuite! */ - err = 1; - } else { - if (!EVP_MD_CTX_copy_ex(&ctx, hdgst) || - !EVP_DigestFinal_ex(&ctx, q, &i) || - (i != (unsigned int)hashsize)) - err = 1; - q += hashsize; - } - } - } - - if (!tls1_PRF(ssl_get_algorithm2(s), str, slen, buf, (int)(q - buf), - NULL, 0, NULL, 0, NULL, 0, - s->session->master_key, s->session->master_key_length, - out, buf2, sizeof buf2)) - err = 1; - EVP_MD_CTX_cleanup(&ctx); - - if (err) - return 0; - else - return sizeof buf2; -} - -int -tls1_mac(SSL *ssl, unsigned char *md, int send) -{ - SSL3_RECORD *rec; - unsigned char *seq; - EVP_MD_CTX *hash; - size_t md_size, orig_len; - EVP_MD_CTX hmac, *mac_ctx; - unsigned char header[13]; - int stream_mac = (send ? - (ssl->mac_flags & SSL_MAC_FLAG_WRITE_MAC_STREAM) : - (ssl->mac_flags & SSL_MAC_FLAG_READ_MAC_STREAM)); - int t; - - if (send) { - rec = &(ssl->s3->wrec); - seq = &(ssl->s3->write_sequence[0]); - hash = ssl->write_hash; - } else { - rec = &(ssl->s3->rrec); - seq = &(ssl->s3->read_sequence[0]); - hash = ssl->read_hash; - } - - t = EVP_MD_CTX_size(hash); - OPENSSL_assert(t >= 0); - md_size = t; - - /* I should fix this up TLS TLS TLS TLS TLS XXXXXXXX */ - if (stream_mac) { - mac_ctx = hash; - } else { - if (!EVP_MD_CTX_copy(&hmac, hash)) - return -1; - mac_ctx = &hmac; - } - - if (SSL_IS_DTLS(ssl)) - dtls1_build_sequence_number(header, seq, - send ? ssl->d1->w_epoch : ssl->d1->r_epoch); - else - memcpy(header, seq, SSL3_SEQUENCE_SIZE); - - /* kludge: tls1_cbc_remove_padding passes padding length in rec->type */ - orig_len = rec->length + md_size + ((unsigned int)rec->type >> 8); - rec->type &= 0xff; - - header[8] = rec->type; - header[9] = (unsigned char)(ssl->version >> 8); - header[10] = (unsigned char)(ssl->version); - header[11] = (rec->length) >> 8; - header[12] = (rec->length) & 0xff; - - if (!send && - EVP_CIPHER_CTX_mode(ssl->enc_read_ctx) == EVP_CIPH_CBC_MODE && - ssl3_cbc_record_digest_supported(mac_ctx)) { - /* This is a CBC-encrypted record. We must avoid leaking any - * timing-side channel information about how many blocks of - * data we are hashing because that gives an attacker a - * timing-oracle. */ - if (!ssl3_cbc_digest_record(mac_ctx, - md, &md_size, header, rec->input, - rec->length + md_size, orig_len, - ssl->s3->read_mac_secret, - ssl->s3->read_mac_secret_size, - 0 /* not SSLv3 */)) - return -1; - } else { - EVP_DigestSignUpdate(mac_ctx, header, sizeof(header)); - EVP_DigestSignUpdate(mac_ctx, rec->input, rec->length); - t = EVP_DigestSignFinal(mac_ctx, md, &md_size); - OPENSSL_assert(t > 0); - } - - if (!stream_mac) - EVP_MD_CTX_cleanup(&hmac); - - if (!SSL_IS_DTLS(ssl)) - tls1_record_sequence_increment(seq); - - return (md_size); -} - -int -tls1_generate_master_secret(SSL *s, unsigned char *out, unsigned char *p, - int len) -{ - unsigned char buff[SSL_MAX_MASTER_KEY_LENGTH]; - - tls1_PRF(ssl_get_algorithm2(s), - TLS_MD_MASTER_SECRET_CONST, TLS_MD_MASTER_SECRET_CONST_SIZE, - s->s3->client_random, SSL3_RANDOM_SIZE, NULL, 0, - s->s3->server_random, SSL3_RANDOM_SIZE, NULL, 0, - p, len, s->session->master_key, buff, sizeof buff); - - return (SSL3_MASTER_SECRET_SIZE); -} - -int -tls1_export_keying_material(SSL *s, unsigned char *out, size_t olen, - const char *label, size_t llen, const unsigned char *context, - size_t contextlen, int use_context) -{ - unsigned char *buff; - unsigned char *val = NULL; - size_t vallen, currentvalpos; - int rv; - - buff = malloc(olen); - if (buff == NULL) - goto err2; - - /* construct PRF arguments - * we construct the PRF argument ourself rather than passing separate - * values into the TLS PRF to ensure that the concatenation of values - * does not create a prohibited label. - */ - vallen = llen + SSL3_RANDOM_SIZE * 2; - if (use_context) { - vallen += 2 + contextlen; - } - - val = malloc(vallen); - if (val == NULL) - goto err2; - currentvalpos = 0; - memcpy(val + currentvalpos, (unsigned char *) label, llen); - currentvalpos += llen; - memcpy(val + currentvalpos, s->s3->client_random, SSL3_RANDOM_SIZE); - currentvalpos += SSL3_RANDOM_SIZE; - memcpy(val + currentvalpos, s->s3->server_random, SSL3_RANDOM_SIZE); - currentvalpos += SSL3_RANDOM_SIZE; - - if (use_context) { - val[currentvalpos] = (contextlen >> 8) & 0xff; - currentvalpos++; - val[currentvalpos] = contextlen & 0xff; - currentvalpos++; - if ((contextlen > 0) || (context != NULL)) { - memcpy(val + currentvalpos, context, contextlen); - } - } - - /* disallow prohibited labels - * note that SSL3_RANDOM_SIZE > max(prohibited label len) = - * 15, so size of val > max(prohibited label len) = 15 and the - * comparisons won't have buffer overflow - */ - if (memcmp(val, TLS_MD_CLIENT_FINISH_CONST, - TLS_MD_CLIENT_FINISH_CONST_SIZE) == 0) - goto err1; - if (memcmp(val, TLS_MD_SERVER_FINISH_CONST, - TLS_MD_SERVER_FINISH_CONST_SIZE) == 0) - goto err1; - if (memcmp(val, TLS_MD_MASTER_SECRET_CONST, - TLS_MD_MASTER_SECRET_CONST_SIZE) == 0) - goto err1; - if (memcmp(val, TLS_MD_KEY_EXPANSION_CONST, - TLS_MD_KEY_EXPANSION_CONST_SIZE) == 0) - goto err1; - - rv = tls1_PRF(ssl_get_algorithm2(s), - val, vallen, NULL, 0, NULL, 0, NULL, 0, NULL, 0, - s->session->master_key, s->session->master_key_length, - out, buff, olen); - - goto ret; -err1: - SSLerr(SSL_F_TLS1_EXPORT_KEYING_MATERIAL, - SSL_R_TLS_ILLEGAL_EXPORTER_LABEL); - rv = 0; - goto ret; -err2: - SSLerr(SSL_F_TLS1_EXPORT_KEYING_MATERIAL, ERR_R_MALLOC_FAILURE); - rv = 0; -ret: - free(buff); - free(val); - - return (rv); -} - -int -tls1_alert_code(int code) -{ - switch (code) { - case SSL_AD_CLOSE_NOTIFY: - return (SSL3_AD_CLOSE_NOTIFY); - case SSL_AD_UNEXPECTED_MESSAGE: - return (SSL3_AD_UNEXPECTED_MESSAGE); - case SSL_AD_BAD_RECORD_MAC: - return (SSL3_AD_BAD_RECORD_MAC); - case SSL_AD_DECRYPTION_FAILED: - return (TLS1_AD_DECRYPTION_FAILED); - case SSL_AD_RECORD_OVERFLOW: - return (TLS1_AD_RECORD_OVERFLOW); - case SSL_AD_DECOMPRESSION_FAILURE: - return (SSL3_AD_DECOMPRESSION_FAILURE); - case SSL_AD_HANDSHAKE_FAILURE: - return (SSL3_AD_HANDSHAKE_FAILURE); - case SSL_AD_NO_CERTIFICATE: - return (-1); - case SSL_AD_BAD_CERTIFICATE: - return (SSL3_AD_BAD_CERTIFICATE); - case SSL_AD_UNSUPPORTED_CERTIFICATE: - return (SSL3_AD_UNSUPPORTED_CERTIFICATE); - case SSL_AD_CERTIFICATE_REVOKED: - return (SSL3_AD_CERTIFICATE_REVOKED); - case SSL_AD_CERTIFICATE_EXPIRED: - return (SSL3_AD_CERTIFICATE_EXPIRED); - case SSL_AD_CERTIFICATE_UNKNOWN: - return (SSL3_AD_CERTIFICATE_UNKNOWN); - case SSL_AD_ILLEGAL_PARAMETER: - return (SSL3_AD_ILLEGAL_PARAMETER); - case SSL_AD_UNKNOWN_CA: - return (TLS1_AD_UNKNOWN_CA); - case SSL_AD_ACCESS_DENIED: - return (TLS1_AD_ACCESS_DENIED); - case SSL_AD_DECODE_ERROR: - return (TLS1_AD_DECODE_ERROR); - case SSL_AD_DECRYPT_ERROR: - return (TLS1_AD_DECRYPT_ERROR); - case SSL_AD_EXPORT_RESTRICTION: - return (TLS1_AD_EXPORT_RESTRICTION); - case SSL_AD_PROTOCOL_VERSION: - return (TLS1_AD_PROTOCOL_VERSION); - case SSL_AD_INSUFFICIENT_SECURITY: - return (TLS1_AD_INSUFFICIENT_SECURITY); - case SSL_AD_INTERNAL_ERROR: - return (TLS1_AD_INTERNAL_ERROR); - case SSL_AD_INAPPROPRIATE_FALLBACK: - return(TLS1_AD_INAPPROPRIATE_FALLBACK); - case SSL_AD_USER_CANCELLED: - return (TLS1_AD_USER_CANCELLED); - case SSL_AD_NO_RENEGOTIATION: - return (TLS1_AD_NO_RENEGOTIATION); - case SSL_AD_UNSUPPORTED_EXTENSION: - return (TLS1_AD_UNSUPPORTED_EXTENSION); - case SSL_AD_CERTIFICATE_UNOBTAINABLE: - return (TLS1_AD_CERTIFICATE_UNOBTAINABLE); - case SSL_AD_UNRECOGNIZED_NAME: - return (TLS1_AD_UNRECOGNIZED_NAME); - case SSL_AD_BAD_CERTIFICATE_STATUS_RESPONSE: - return (TLS1_AD_BAD_CERTIFICATE_STATUS_RESPONSE); - case SSL_AD_BAD_CERTIFICATE_HASH_VALUE: - return (TLS1_AD_BAD_CERTIFICATE_HASH_VALUE); - case SSL_AD_UNKNOWN_PSK_IDENTITY: - return (TLS1_AD_UNKNOWN_PSK_IDENTITY); - default: - return (-1); - } -} |