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authorbeck <beck@openbsd.org>2016-09-03 11:33:34 +0000
committerbeck <beck@openbsd.org>2016-09-03 11:33:34 +0000
commit8204a9859e29f943f9d45fa3c5bacf005da87a21 (patch)
tree3d72799b17122728ed1ce817d171df956c52a633 /lib/libssl/src/ssl/t1_enc.c
parentRemove NULL pointer checks before calls to free(). (diff)
downloadwireguard-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.c1419
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);
- }
-}