2018-09-13 19:18:07 +00:00
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/*
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2019-02-26 18:06:51 +00:00
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* Copyright 1995-2019 The OpenSSL Project Authors. All Rights Reserved.
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2012-07-11 23:31:36 +00:00
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* Copyright 2005 Nokia. All rights reserved.
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*
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2018-09-13 19:18:07 +00:00
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* Licensed under the OpenSSL license (the "License"). You may not use
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* this file except in compliance with the License. You can obtain a copy
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* in the file LICENSE in the source distribution or at
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* https://www.openssl.org/source/license.html
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2012-07-11 23:31:36 +00:00
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*/
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2000-01-10 06:22:05 +00:00
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#include <stdio.h>
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#include "ssl_locl.h"
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2003-01-28 21:43:22 +00:00
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#include <openssl/evp.h>
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#include <openssl/md5.h>
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2018-09-13 19:18:07 +00:00
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#include "internal/cryptlib.h"
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2000-01-10 06:22:05 +00:00
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2003-01-28 21:43:22 +00:00
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static int ssl3_generate_key_block(SSL *s, unsigned char *km, int num)
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2015-03-20 15:28:40 +00:00
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{
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2018-09-13 19:18:07 +00:00
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EVP_MD_CTX *m5;
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EVP_MD_CTX *s1;
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2015-03-20 15:28:40 +00:00
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unsigned char buf[16], smd[SHA_DIGEST_LENGTH];
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unsigned char c = 'A';
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unsigned int i, j, k;
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2018-09-13 19:18:07 +00:00
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int ret = 0;
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2000-01-10 06:22:05 +00:00
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#ifdef CHARSET_EBCDIC
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2015-03-20 15:28:40 +00:00
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c = os_toascii[c]; /* 'A' in ASCII */
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2000-01-10 06:22:05 +00:00
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#endif
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2015-03-20 15:28:40 +00:00
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k = 0;
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2018-09-13 19:18:07 +00:00
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m5 = EVP_MD_CTX_new();
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s1 = EVP_MD_CTX_new();
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if (m5 == NULL || s1 == NULL) {
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SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_GENERATE_KEY_BLOCK,
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ERR_R_MALLOC_FAILURE);
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goto err;
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}
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EVP_MD_CTX_set_flags(m5, EVP_MD_CTX_FLAG_NON_FIPS_ALLOW);
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2015-03-20 15:28:40 +00:00
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for (i = 0; (int)i < num; i += MD5_DIGEST_LENGTH) {
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k++;
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2018-09-13 19:18:07 +00:00
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if (k > sizeof(buf)) {
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2015-03-20 15:28:40 +00:00
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/* bug: 'buf' is too small for this ciphersuite */
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2018-09-13 19:18:07 +00:00
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SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_GENERATE_KEY_BLOCK,
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ERR_R_INTERNAL_ERROR);
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2017-05-25 19:38:38 +00:00
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goto err;
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2018-09-13 19:18:07 +00:00
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}
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2015-03-20 15:28:40 +00:00
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for (j = 0; j < k; j++)
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buf[j] = c;
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c++;
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2018-09-13 19:18:07 +00:00
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if (!EVP_DigestInit_ex(s1, EVP_sha1(), NULL)
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|| !EVP_DigestUpdate(s1, buf, k)
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|| !EVP_DigestUpdate(s1, s->session->master_key,
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s->session->master_key_length)
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|| !EVP_DigestUpdate(s1, s->s3->server_random, SSL3_RANDOM_SIZE)
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|| !EVP_DigestUpdate(s1, s->s3->client_random, SSL3_RANDOM_SIZE)
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|| !EVP_DigestFinal_ex(s1, smd, NULL)
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|| !EVP_DigestInit_ex(m5, EVP_md5(), NULL)
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|| !EVP_DigestUpdate(m5, s->session->master_key,
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s->session->master_key_length)
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|| !EVP_DigestUpdate(m5, smd, SHA_DIGEST_LENGTH)) {
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SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_GENERATE_KEY_BLOCK,
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ERR_R_INTERNAL_ERROR);
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goto err;
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}
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2015-03-20 15:28:40 +00:00
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if ((int)(i + MD5_DIGEST_LENGTH) > num) {
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2018-09-13 19:18:07 +00:00
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if (!EVP_DigestFinal_ex(m5, smd, NULL)) {
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SSLfatal(s, SSL_AD_INTERNAL_ERROR,
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SSL_F_SSL3_GENERATE_KEY_BLOCK, ERR_R_INTERNAL_ERROR);
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goto err;
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}
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2015-03-20 15:28:40 +00:00
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memcpy(km, smd, (num - i));
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2018-09-13 19:18:07 +00:00
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} else {
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if (!EVP_DigestFinal_ex(m5, km, NULL)) {
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SSLfatal(s, SSL_AD_INTERNAL_ERROR,
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SSL_F_SSL3_GENERATE_KEY_BLOCK, ERR_R_INTERNAL_ERROR);
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goto err;
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}
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}
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2015-03-20 15:28:40 +00:00
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km += MD5_DIGEST_LENGTH;
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}
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2018-09-13 19:18:07 +00:00
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OPENSSL_cleanse(smd, sizeof(smd));
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ret = 1;
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2017-05-25 19:38:38 +00:00
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err:
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2018-09-13 19:18:07 +00:00
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EVP_MD_CTX_free(m5);
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EVP_MD_CTX_free(s1);
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return ret;
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2015-03-20 15:28:40 +00:00
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}
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2000-01-10 06:22:05 +00:00
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int ssl3_change_cipher_state(SSL *s, int which)
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2015-03-20 15:28:40 +00:00
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{
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unsigned char *p, *mac_secret;
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2018-09-13 19:18:07 +00:00
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unsigned char *ms, *key, *iv;
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2015-03-20 15:28:40 +00:00
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EVP_CIPHER_CTX *dd;
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const EVP_CIPHER *c;
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2006-07-29 19:10:21 +00:00
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#ifndef OPENSSL_NO_COMP
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2015-03-20 15:28:40 +00:00
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COMP_METHOD *comp;
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2006-07-29 19:10:21 +00:00
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#endif
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2015-03-20 15:28:40 +00:00
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const EVP_MD *m;
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2018-09-13 19:18:07 +00:00
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int mdi;
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size_t n, i, j, k, cl;
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2015-03-20 15:28:40 +00:00
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int reuse_dd = 0;
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c = s->s3->tmp.new_sym_enc;
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m = s->s3->tmp.new_hash;
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/* m == NULL will lead to a crash later */
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2018-09-13 19:18:07 +00:00
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if (!ossl_assert(m != NULL)) {
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SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_CHANGE_CIPHER_STATE,
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ERR_R_INTERNAL_ERROR);
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goto err;
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}
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2006-07-29 19:10:21 +00:00
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#ifndef OPENSSL_NO_COMP
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2015-03-20 15:28:40 +00:00
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if (s->s3->tmp.new_compression == NULL)
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comp = NULL;
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else
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comp = s->s3->tmp.new_compression->method;
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2006-07-29 19:10:21 +00:00
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#endif
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2000-01-10 06:22:05 +00:00
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2015-03-20 15:28:40 +00:00
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if (which & SSL3_CC_READ) {
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2018-09-13 19:18:07 +00:00
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if (s->enc_read_ctx != NULL) {
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2015-03-20 15:28:40 +00:00
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reuse_dd = 1;
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2018-09-13 19:18:07 +00:00
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} else if ((s->enc_read_ctx = EVP_CIPHER_CTX_new()) == NULL) {
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SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_CHANGE_CIPHER_STATE,
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ERR_R_MALLOC_FAILURE);
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2015-03-20 15:28:40 +00:00
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goto err;
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2018-09-13 19:18:07 +00:00
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} else {
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2015-03-20 15:28:40 +00:00
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/*
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2018-09-13 19:18:07 +00:00
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* make sure it's initialised in case we exit later with an error
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2015-03-20 15:28:40 +00:00
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*/
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2018-09-13 19:18:07 +00:00
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EVP_CIPHER_CTX_reset(s->enc_read_ctx);
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}
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2015-03-20 15:28:40 +00:00
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dd = s->enc_read_ctx;
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2015-12-03 17:22:58 +00:00
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if (ssl_replace_hash(&s->read_hash, m) == NULL) {
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2018-09-13 19:18:07 +00:00
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SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_CHANGE_CIPHER_STATE,
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ERR_R_INTERNAL_ERROR);
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goto err;
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2015-12-03 17:22:58 +00:00
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}
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2006-07-29 19:10:21 +00:00
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#ifndef OPENSSL_NO_COMP
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2015-03-20 15:28:40 +00:00
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/* COMPRESS */
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2018-09-13 19:18:07 +00:00
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COMP_CTX_free(s->expand);
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s->expand = NULL;
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2015-03-20 15:28:40 +00:00
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if (comp != NULL) {
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s->expand = COMP_CTX_new(comp);
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if (s->expand == NULL) {
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2018-09-13 19:18:07 +00:00
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SSLfatal(s, SSL_AD_INTERNAL_ERROR,
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SSL_F_SSL3_CHANGE_CIPHER_STATE,
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SSL_R_COMPRESSION_LIBRARY_ERROR);
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2015-03-20 15:28:40 +00:00
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goto err;
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2018-09-13 19:18:07 +00:00
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}
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2015-03-20 15:28:40 +00:00
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}
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2006-07-29 19:10:21 +00:00
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#endif
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2018-09-13 19:18:07 +00:00
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RECORD_LAYER_reset_read_sequence(&s->rlayer);
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2015-03-20 15:28:40 +00:00
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mac_secret = &(s->s3->read_mac_secret[0]);
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} else {
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2018-09-13 19:18:07 +00:00
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s->statem.enc_write_state = ENC_WRITE_STATE_INVALID;
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if (s->enc_write_ctx != NULL) {
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2015-03-20 15:28:40 +00:00
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reuse_dd = 1;
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2018-09-13 19:18:07 +00:00
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} else if ((s->enc_write_ctx = EVP_CIPHER_CTX_new()) == NULL) {
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SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_CHANGE_CIPHER_STATE,
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ERR_R_MALLOC_FAILURE);
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2015-03-20 15:28:40 +00:00
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goto err;
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2018-09-13 19:18:07 +00:00
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} else {
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2015-03-20 15:28:40 +00:00
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/*
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2018-09-13 19:18:07 +00:00
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* make sure it's initialised in case we exit later with an error
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2015-03-20 15:28:40 +00:00
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*/
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2018-09-13 19:18:07 +00:00
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EVP_CIPHER_CTX_reset(s->enc_write_ctx);
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}
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2015-03-20 15:28:40 +00:00
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dd = s->enc_write_ctx;
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2015-12-03 17:22:58 +00:00
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if (ssl_replace_hash(&s->write_hash, m) == NULL) {
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2018-09-13 19:18:07 +00:00
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SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_CHANGE_CIPHER_STATE,
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ERR_R_MALLOC_FAILURE);
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goto err;
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2015-12-03 17:22:58 +00:00
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}
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2006-07-29 19:10:21 +00:00
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#ifndef OPENSSL_NO_COMP
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2015-03-20 15:28:40 +00:00
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/* COMPRESS */
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2018-09-13 19:18:07 +00:00
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COMP_CTX_free(s->compress);
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s->compress = NULL;
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2015-03-20 15:28:40 +00:00
|
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if (comp != NULL) {
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s->compress = COMP_CTX_new(comp);
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|
|
if (s->compress == NULL) {
|
2018-09-13 19:18:07 +00:00
|
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SSLfatal(s, SSL_AD_INTERNAL_ERROR,
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SSL_F_SSL3_CHANGE_CIPHER_STATE,
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SSL_R_COMPRESSION_LIBRARY_ERROR);
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goto err;
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2015-03-20 15:28:40 +00:00
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}
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}
|
2006-07-29 19:10:21 +00:00
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#endif
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2018-09-13 19:18:07 +00:00
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RECORD_LAYER_reset_write_sequence(&s->rlayer);
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2015-03-20 15:28:40 +00:00
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mac_secret = &(s->s3->write_mac_secret[0]);
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}
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if (reuse_dd)
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2018-09-13 19:18:07 +00:00
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EVP_CIPHER_CTX_reset(dd);
|
2015-03-20 15:28:40 +00:00
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p = s->s3->tmp.key_block;
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2018-09-13 19:18:07 +00:00
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mdi = EVP_MD_size(m);
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if (mdi < 0) {
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SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_CHANGE_CIPHER_STATE,
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ERR_R_INTERNAL_ERROR);
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goto err;
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}
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i = mdi;
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2015-03-20 15:28:40 +00:00
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cl = EVP_CIPHER_key_length(c);
|
2018-09-13 19:18:07 +00:00
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j = cl;
|
2015-03-20 15:28:40 +00:00
|
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k = EVP_CIPHER_iv_length(c);
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if ((which == SSL3_CHANGE_CIPHER_CLIENT_WRITE) ||
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(which == SSL3_CHANGE_CIPHER_SERVER_READ)) {
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ms = &(p[0]);
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n = i + i;
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key = &(p[n]);
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n += j + j;
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iv = &(p[n]);
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n += k + k;
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|
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} else {
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n = i;
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ms = &(p[n]);
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|
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n += i + j;
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key = &(p[n]);
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n += j + k;
|
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|
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iv = &(p[n]);
|
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|
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n += k;
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|
|
}
|
|
|
|
|
|
|
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if (n > s->s3->tmp.key_block_length) {
|
2018-09-13 19:18:07 +00:00
|
|
|
SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_CHANGE_CIPHER_STATE,
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|
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ERR_R_INTERNAL_ERROR);
|
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goto err;
|
2015-03-20 15:28:40 +00:00
|
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|
}
|
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memcpy(mac_secret, ms, i);
|
2018-09-13 19:18:07 +00:00
|
|
|
|
|
|
|
if (!EVP_CipherInit_ex(dd, c, NULL, key, iv, (which & SSL3_CC_WRITE))) {
|
|
|
|
SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_CHANGE_CIPHER_STATE,
|
|
|
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ERR_R_INTERNAL_ERROR);
|
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|
goto err;
|
2015-10-23 19:46:02 +00:00
|
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|
}
|
|
|
|
|
2018-09-13 19:18:07 +00:00
|
|
|
s->statem.enc_write_state = ENC_WRITE_STATE_VALID;
|
|
|
|
return 1;
|
2015-03-20 15:28:40 +00:00
|
|
|
err:
|
2018-09-13 19:18:07 +00:00
|
|
|
return 0;
|
2015-03-20 15:28:40 +00:00
|
|
|
}
|
2000-01-10 06:22:05 +00:00
|
|
|
|
|
|
|
int ssl3_setup_key_block(SSL *s)
|
2015-03-20 15:28:40 +00:00
|
|
|
{
|
|
|
|
unsigned char *p;
|
|
|
|
const EVP_CIPHER *c;
|
|
|
|
const EVP_MD *hash;
|
|
|
|
int num;
|
|
|
|
int ret = 0;
|
|
|
|
SSL_COMP *comp;
|
|
|
|
|
|
|
|
if (s->s3->tmp.key_block_length != 0)
|
2018-09-13 19:18:07 +00:00
|
|
|
return 1;
|
2015-03-20 15:28:40 +00:00
|
|
|
|
2018-09-13 19:18:07 +00:00
|
|
|
if (!ssl_cipher_get_evp(s->session, &c, &hash, NULL, NULL, &comp, 0)) {
|
|
|
|
SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_SETUP_KEY_BLOCK,
|
|
|
|
SSL_R_CIPHER_OR_HASH_UNAVAILABLE);
|
|
|
|
return 0;
|
2015-03-20 15:28:40 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
s->s3->tmp.new_sym_enc = c;
|
|
|
|
s->s3->tmp.new_hash = hash;
|
2006-07-29 19:10:21 +00:00
|
|
|
#ifdef OPENSSL_NO_COMP
|
2015-03-20 15:28:40 +00:00
|
|
|
s->s3->tmp.new_compression = NULL;
|
2006-07-29 19:10:21 +00:00
|
|
|
#else
|
2015-03-20 15:28:40 +00:00
|
|
|
s->s3->tmp.new_compression = comp;
|
2006-07-29 19:10:21 +00:00
|
|
|
#endif
|
2000-01-10 06:22:05 +00:00
|
|
|
|
2015-03-20 15:28:40 +00:00
|
|
|
num = EVP_MD_size(hash);
|
|
|
|
if (num < 0)
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
num = EVP_CIPHER_key_length(c) + num + EVP_CIPHER_iv_length(c);
|
|
|
|
num *= 2;
|
2012-07-11 23:31:36 +00:00
|
|
|
|
2015-03-20 15:28:40 +00:00
|
|
|
ssl3_cleanup_key_block(s);
|
2000-01-10 06:22:05 +00:00
|
|
|
|
2018-09-13 19:18:07 +00:00
|
|
|
if ((p = OPENSSL_malloc(num)) == NULL) {
|
|
|
|
SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_SETUP_KEY_BLOCK,
|
|
|
|
ERR_R_MALLOC_FAILURE);
|
|
|
|
return 0;
|
|
|
|
}
|
2000-01-10 06:22:05 +00:00
|
|
|
|
2015-03-20 15:28:40 +00:00
|
|
|
s->s3->tmp.key_block_length = num;
|
|
|
|
s->s3->tmp.key_block = p;
|
2000-01-10 06:22:05 +00:00
|
|
|
|
2018-09-13 19:18:07 +00:00
|
|
|
/* Calls SSLfatal() as required */
|
2015-03-20 15:28:40 +00:00
|
|
|
ret = ssl3_generate_key_block(s, p, num);
|
2003-01-28 21:43:22 +00:00
|
|
|
|
2015-03-20 15:28:40 +00:00
|
|
|
if (!(s->options & SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS)) {
|
|
|
|
/*
|
|
|
|
* enable vulnerability countermeasure for CBC ciphers with known-IV
|
|
|
|
* problem (http://www.openssl.org/~bodo/tls-cbc.txt)
|
|
|
|
*/
|
|
|
|
s->s3->need_empty_fragments = 1;
|
2003-01-28 21:43:22 +00:00
|
|
|
|
2015-03-20 15:28:40 +00:00
|
|
|
if (s->session->cipher != NULL) {
|
|
|
|
if (s->session->cipher->algorithm_enc == SSL_eNULL)
|
|
|
|
s->s3->need_empty_fragments = 0;
|
2002-07-30 13:38:06 +00:00
|
|
|
|
2003-01-28 21:43:22 +00:00
|
|
|
#ifndef OPENSSL_NO_RC4
|
2015-03-20 15:28:40 +00:00
|
|
|
if (s->session->cipher->algorithm_enc == SSL_RC4)
|
|
|
|
s->s3->need_empty_fragments = 0;
|
2002-07-30 12:44:15 +00:00
|
|
|
#endif
|
2015-03-20 15:28:40 +00:00
|
|
|
}
|
|
|
|
}
|
2003-01-28 21:43:22 +00:00
|
|
|
|
2015-03-20 15:28:40 +00:00
|
|
|
return ret;
|
|
|
|
}
|
2000-01-10 06:22:05 +00:00
|
|
|
|
|
|
|
void ssl3_cleanup_key_block(SSL *s)
|
2015-03-20 15:28:40 +00:00
|
|
|
{
|
2018-09-13 19:18:07 +00:00
|
|
|
OPENSSL_clear_free(s->s3->tmp.key_block, s->s3->tmp.key_block_length);
|
|
|
|
s->s3->tmp.key_block = NULL;
|
2015-03-20 15:28:40 +00:00
|
|
|
s->s3->tmp.key_block_length = 0;
|
|
|
|
}
|
|
|
|
|
2017-05-25 19:38:38 +00:00
|
|
|
int ssl3_init_finished_mac(SSL *s)
|
2015-03-20 15:28:40 +00:00
|
|
|
{
|
2018-09-13 19:18:07 +00:00
|
|
|
BIO *buf = BIO_new(BIO_s_mem());
|
|
|
|
|
|
|
|
if (buf == NULL) {
|
|
|
|
SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_INIT_FINISHED_MAC,
|
|
|
|
ERR_R_MALLOC_FAILURE);
|
2017-05-25 19:38:38 +00:00
|
|
|
return 0;
|
2018-09-13 19:18:07 +00:00
|
|
|
}
|
|
|
|
ssl3_free_digest_list(s);
|
|
|
|
s->s3->handshake_buffer = buf;
|
2015-03-20 15:28:40 +00:00
|
|
|
(void)BIO_set_close(s->s3->handshake_buffer, BIO_CLOSE);
|
2017-05-25 19:38:38 +00:00
|
|
|
return 1;
|
2015-03-20 15:28:40 +00:00
|
|
|
}
|
|
|
|
|
2018-09-13 19:18:07 +00:00
|
|
|
/*
|
|
|
|
* Free digest list. Also frees handshake buffer since they are always freed
|
|
|
|
* together.
|
|
|
|
*/
|
|
|
|
|
2015-03-20 15:28:40 +00:00
|
|
|
void ssl3_free_digest_list(SSL *s)
|
|
|
|
{
|
2018-09-13 19:18:07 +00:00
|
|
|
BIO_free(s->s3->handshake_buffer);
|
|
|
|
s->s3->handshake_buffer = NULL;
|
|
|
|
EVP_MD_CTX_free(s->s3->handshake_dgst);
|
2015-03-20 15:28:40 +00:00
|
|
|
s->s3->handshake_dgst = NULL;
|
|
|
|
}
|
2012-07-11 23:31:36 +00:00
|
|
|
|
2018-09-13 19:18:07 +00:00
|
|
|
int ssl3_finish_mac(SSL *s, const unsigned char *buf, size_t len)
|
2015-03-20 15:28:40 +00:00
|
|
|
{
|
2018-09-13 19:18:07 +00:00
|
|
|
int ret;
|
|
|
|
|
|
|
|
if (s->s3->handshake_dgst == NULL) {
|
|
|
|
/* Note: this writes to a memory BIO so a failure is a fatal error */
|
|
|
|
if (len > INT_MAX) {
|
|
|
|
SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_FINISH_MAC,
|
|
|
|
SSL_R_OVERFLOW_ERROR);
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
ret = BIO_write(s->s3->handshake_buffer, (void *)buf, (int)len);
|
|
|
|
if (ret <= 0 || ret != (int)len) {
|
|
|
|
SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_FINISH_MAC,
|
|
|
|
ERR_R_INTERNAL_ERROR);
|
|
|
|
return 0;
|
|
|
|
}
|
2015-03-20 15:28:40 +00:00
|
|
|
} else {
|
2018-09-13 19:18:07 +00:00
|
|
|
ret = EVP_DigestUpdate(s->s3->handshake_dgst, buf, len);
|
|
|
|
if (!ret) {
|
|
|
|
SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_FINISH_MAC,
|
|
|
|
ERR_R_INTERNAL_ERROR);
|
|
|
|
return 0;
|
2015-03-20 15:28:40 +00:00
|
|
|
}
|
|
|
|
}
|
2018-09-13 19:18:07 +00:00
|
|
|
return 1;
|
2015-03-20 15:28:40 +00:00
|
|
|
}
|
2000-01-10 06:22:05 +00:00
|
|
|
|
2018-09-13 19:18:07 +00:00
|
|
|
int ssl3_digest_cached_records(SSL *s, int keep)
|
2015-03-20 15:28:40 +00:00
|
|
|
{
|
|
|
|
const EVP_MD *md;
|
|
|
|
long hdatalen;
|
|
|
|
void *hdata;
|
|
|
|
|
2016-09-22 13:04:03 +00:00
|
|
|
if (s->s3->handshake_dgst == NULL) {
|
2018-09-13 19:18:07 +00:00
|
|
|
hdatalen = BIO_get_mem_data(s->s3->handshake_buffer, &hdata);
|
|
|
|
if (hdatalen <= 0) {
|
|
|
|
SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_DIGEST_CACHED_RECORDS,
|
|
|
|
SSL_R_BAD_HANDSHAKE_LENGTH);
|
|
|
|
return 0;
|
|
|
|
}
|
2015-03-20 15:28:40 +00:00
|
|
|
|
2018-09-13 19:18:07 +00:00
|
|
|
s->s3->handshake_dgst = EVP_MD_CTX_new();
|
|
|
|
if (s->s3->handshake_dgst == NULL) {
|
|
|
|
SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_DIGEST_CACHED_RECORDS,
|
|
|
|
ERR_R_MALLOC_FAILURE);
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
md = ssl_handshake_md(s);
|
|
|
|
if (md == NULL || !EVP_DigestInit_ex(s->s3->handshake_dgst, md, NULL)
|
|
|
|
|| !EVP_DigestUpdate(s->s3->handshake_dgst, hdata, hdatalen)) {
|
|
|
|
SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_DIGEST_CACHED_RECORDS,
|
|
|
|
ERR_R_INTERNAL_ERROR);
|
|
|
|
return 0;
|
2015-03-20 15:28:40 +00:00
|
|
|
}
|
|
|
|
}
|
2018-09-13 19:18:07 +00:00
|
|
|
if (keep == 0) {
|
2015-03-20 15:28:40 +00:00
|
|
|
BIO_free(s->s3->handshake_buffer);
|
|
|
|
s->s3->handshake_buffer = NULL;
|
|
|
|
}
|
|
|
|
|
|
|
|
return 1;
|
|
|
|
}
|
2000-01-10 06:22:05 +00:00
|
|
|
|
2018-09-13 19:18:07 +00:00
|
|
|
size_t ssl3_final_finish_mac(SSL *s, const char *sender, size_t len,
|
|
|
|
unsigned char *p)
|
2015-03-20 15:28:40 +00:00
|
|
|
{
|
2018-09-13 19:18:07 +00:00
|
|
|
int ret;
|
|
|
|
EVP_MD_CTX *ctx = NULL;
|
2015-03-20 15:28:40 +00:00
|
|
|
|
2018-09-13 19:18:07 +00:00
|
|
|
if (!ssl3_digest_cached_records(s, 0)) {
|
|
|
|
/* SSLfatal() already called */
|
2015-03-20 15:28:40 +00:00
|
|
|
return 0;
|
2018-09-13 19:18:07 +00:00
|
|
|
}
|
2015-03-20 15:28:40 +00:00
|
|
|
|
2018-09-13 19:18:07 +00:00
|
|
|
if (EVP_MD_CTX_type(s->s3->handshake_dgst) != NID_md5_sha1) {
|
|
|
|
SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_FINAL_FINISH_MAC,
|
|
|
|
SSL_R_NO_REQUIRED_DIGEST);
|
2015-03-20 15:28:40 +00:00
|
|
|
return 0;
|
|
|
|
}
|
2018-09-13 19:18:07 +00:00
|
|
|
|
|
|
|
ctx = EVP_MD_CTX_new();
|
|
|
|
if (ctx == NULL) {
|
|
|
|
SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_FINAL_FINISH_MAC,
|
|
|
|
ERR_R_MALLOC_FAILURE);
|
2015-03-20 15:28:40 +00:00
|
|
|
return 0;
|
|
|
|
}
|
2018-09-13 19:18:07 +00:00
|
|
|
if (!EVP_MD_CTX_copy_ex(ctx, s->s3->handshake_dgst)) {
|
|
|
|
SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_FINAL_FINISH_MAC,
|
|
|
|
ERR_R_INTERNAL_ERROR);
|
2018-11-20 18:59:41 +00:00
|
|
|
ret = 0;
|
|
|
|
goto err;
|
2015-12-03 17:22:58 +00:00
|
|
|
}
|
2015-03-20 15:28:40 +00:00
|
|
|
|
2018-09-13 19:18:07 +00:00
|
|
|
ret = EVP_MD_CTX_size(ctx);
|
|
|
|
if (ret < 0) {
|
|
|
|
SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_FINAL_FINISH_MAC,
|
|
|
|
ERR_R_INTERNAL_ERROR);
|
2018-11-20 18:59:41 +00:00
|
|
|
ret = 0;
|
|
|
|
goto err;
|
2015-03-20 15:28:40 +00:00
|
|
|
}
|
|
|
|
|
2018-09-13 19:18:07 +00:00
|
|
|
if ((sender != NULL && EVP_DigestUpdate(ctx, sender, len) <= 0)
|
|
|
|
|| EVP_MD_CTX_ctrl(ctx, EVP_CTRL_SSL3_MASTER_SECRET,
|
|
|
|
(int)s->session->master_key_length,
|
|
|
|
s->session->master_key) <= 0
|
|
|
|
|| EVP_DigestFinal_ex(ctx, p, NULL) <= 0) {
|
|
|
|
SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_FINAL_FINISH_MAC,
|
|
|
|
ERR_R_INTERNAL_ERROR);
|
|
|
|
ret = 0;
|
2015-03-20 15:28:40 +00:00
|
|
|
}
|
|
|
|
|
2018-11-20 18:59:41 +00:00
|
|
|
err:
|
2018-09-13 19:18:07 +00:00
|
|
|
EVP_MD_CTX_free(ctx);
|
2006-07-29 19:10:21 +00:00
|
|
|
|
2018-09-13 19:18:07 +00:00
|
|
|
return ret;
|
2015-03-20 15:28:40 +00:00
|
|
|
}
|
2000-01-10 06:22:05 +00:00
|
|
|
|
|
|
|
int ssl3_generate_master_secret(SSL *s, unsigned char *out, unsigned char *p,
|
2018-09-13 19:18:07 +00:00
|
|
|
size_t len, size_t *secret_size)
|
2015-03-20 15:28:40 +00:00
|
|
|
{
|
|
|
|
static const unsigned char *salt[3] = {
|
2000-01-10 06:22:05 +00:00
|
|
|
#ifndef CHARSET_EBCDIC
|
2015-03-20 15:28:40 +00:00
|
|
|
(const unsigned char *)"A",
|
|
|
|
(const unsigned char *)"BB",
|
|
|
|
(const unsigned char *)"CCC",
|
2000-01-10 06:22:05 +00:00
|
|
|
#else
|
2015-03-20 15:28:40 +00:00
|
|
|
(const unsigned char *)"\x41",
|
|
|
|
(const unsigned char *)"\x42\x42",
|
|
|
|
(const unsigned char *)"\x43\x43\x43",
|
2000-01-10 06:22:05 +00:00
|
|
|
#endif
|
2015-03-20 15:28:40 +00:00
|
|
|
};
|
|
|
|
unsigned char buf[EVP_MAX_MD_SIZE];
|
2018-09-13 19:18:07 +00:00
|
|
|
EVP_MD_CTX *ctx = EVP_MD_CTX_new();
|
|
|
|
int i, ret = 1;
|
2015-03-20 15:28:40 +00:00
|
|
|
unsigned int n;
|
2018-09-13 19:18:07 +00:00
|
|
|
size_t ret_secret_size = 0;
|
2015-03-20 15:28:40 +00:00
|
|
|
|
2018-09-13 19:18:07 +00:00
|
|
|
if (ctx == NULL) {
|
|
|
|
SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_GENERATE_MASTER_SECRET,
|
|
|
|
ERR_R_MALLOC_FAILURE);
|
|
|
|
return 0;
|
|
|
|
}
|
2015-03-20 15:28:40 +00:00
|
|
|
for (i = 0; i < 3; i++) {
|
2018-09-13 19:18:07 +00:00
|
|
|
if (EVP_DigestInit_ex(ctx, s->ctx->sha1, NULL) <= 0
|
|
|
|
|| EVP_DigestUpdate(ctx, salt[i],
|
|
|
|
strlen((const char *)salt[i])) <= 0
|
|
|
|
|| EVP_DigestUpdate(ctx, p, len) <= 0
|
|
|
|
|| EVP_DigestUpdate(ctx, &(s->s3->client_random[0]),
|
|
|
|
SSL3_RANDOM_SIZE) <= 0
|
|
|
|
|| EVP_DigestUpdate(ctx, &(s->s3->server_random[0]),
|
|
|
|
SSL3_RANDOM_SIZE) <= 0
|
|
|
|
/* TODO(size_t) : convert me */
|
|
|
|
|| EVP_DigestFinal_ex(ctx, buf, &n) <= 0
|
|
|
|
|| EVP_DigestInit_ex(ctx, s->ctx->md5, NULL) <= 0
|
|
|
|
|| EVP_DigestUpdate(ctx, p, len) <= 0
|
|
|
|
|| EVP_DigestUpdate(ctx, buf, n) <= 0
|
|
|
|
|| EVP_DigestFinal_ex(ctx, out, &n) <= 0) {
|
|
|
|
SSLfatal(s, SSL_AD_INTERNAL_ERROR,
|
|
|
|
SSL_F_SSL3_GENERATE_MASTER_SECRET, ERR_R_INTERNAL_ERROR);
|
2015-12-03 17:22:58 +00:00
|
|
|
ret = 0;
|
|
|
|
break;
|
|
|
|
}
|
2015-03-20 15:28:40 +00:00
|
|
|
out += n;
|
2018-09-13 19:18:07 +00:00
|
|
|
ret_secret_size += n;
|
2015-03-20 15:28:40 +00:00
|
|
|
}
|
2018-09-13 19:18:07 +00:00
|
|
|
EVP_MD_CTX_free(ctx);
|
|
|
|
|
2017-05-25 19:38:38 +00:00
|
|
|
OPENSSL_cleanse(buf, sizeof(buf));
|
2018-09-13 19:18:07 +00:00
|
|
|
if (ret)
|
|
|
|
*secret_size = ret_secret_size;
|
|
|
|
return ret;
|
2015-03-20 15:28:40 +00:00
|
|
|
}
|
2000-01-10 06:22:05 +00:00
|
|
|
|
|
|
|
int ssl3_alert_code(int code)
|
2015-03-20 15:28:40 +00:00
|
|
|
{
|
|
|
|
switch (code) {
|
|
|
|
case SSL_AD_CLOSE_NOTIFY:
|
2018-09-13 19:18:07 +00:00
|
|
|
return SSL3_AD_CLOSE_NOTIFY;
|
2015-03-20 15:28:40 +00:00
|
|
|
case SSL_AD_UNEXPECTED_MESSAGE:
|
2018-09-13 19:18:07 +00:00
|
|
|
return SSL3_AD_UNEXPECTED_MESSAGE;
|
2015-03-20 15:28:40 +00:00
|
|
|
case SSL_AD_BAD_RECORD_MAC:
|
2018-09-13 19:18:07 +00:00
|
|
|
return SSL3_AD_BAD_RECORD_MAC;
|
2015-03-20 15:28:40 +00:00
|
|
|
case SSL_AD_DECRYPTION_FAILED:
|
2018-09-13 19:18:07 +00:00
|
|
|
return SSL3_AD_BAD_RECORD_MAC;
|
2015-03-20 15:28:40 +00:00
|
|
|
case SSL_AD_RECORD_OVERFLOW:
|
2018-09-13 19:18:07 +00:00
|
|
|
return SSL3_AD_BAD_RECORD_MAC;
|
2015-03-20 15:28:40 +00:00
|
|
|
case SSL_AD_DECOMPRESSION_FAILURE:
|
2018-09-13 19:18:07 +00:00
|
|
|
return SSL3_AD_DECOMPRESSION_FAILURE;
|
2015-03-20 15:28:40 +00:00
|
|
|
case SSL_AD_HANDSHAKE_FAILURE:
|
2018-09-13 19:18:07 +00:00
|
|
|
return SSL3_AD_HANDSHAKE_FAILURE;
|
2015-03-20 15:28:40 +00:00
|
|
|
case SSL_AD_NO_CERTIFICATE:
|
2018-09-13 19:18:07 +00:00
|
|
|
return SSL3_AD_NO_CERTIFICATE;
|
2015-03-20 15:28:40 +00:00
|
|
|
case SSL_AD_BAD_CERTIFICATE:
|
2018-09-13 19:18:07 +00:00
|
|
|
return SSL3_AD_BAD_CERTIFICATE;
|
2015-03-20 15:28:40 +00:00
|
|
|
case SSL_AD_UNSUPPORTED_CERTIFICATE:
|
2018-09-13 19:18:07 +00:00
|
|
|
return SSL3_AD_UNSUPPORTED_CERTIFICATE;
|
2015-03-20 15:28:40 +00:00
|
|
|
case SSL_AD_CERTIFICATE_REVOKED:
|
2018-09-13 19:18:07 +00:00
|
|
|
return SSL3_AD_CERTIFICATE_REVOKED;
|
2015-03-20 15:28:40 +00:00
|
|
|
case SSL_AD_CERTIFICATE_EXPIRED:
|
2018-09-13 19:18:07 +00:00
|
|
|
return SSL3_AD_CERTIFICATE_EXPIRED;
|
2015-03-20 15:28:40 +00:00
|
|
|
case SSL_AD_CERTIFICATE_UNKNOWN:
|
2018-09-13 19:18:07 +00:00
|
|
|
return SSL3_AD_CERTIFICATE_UNKNOWN;
|
2015-03-20 15:28:40 +00:00
|
|
|
case SSL_AD_ILLEGAL_PARAMETER:
|
2018-09-13 19:18:07 +00:00
|
|
|
return SSL3_AD_ILLEGAL_PARAMETER;
|
2015-03-20 15:28:40 +00:00
|
|
|
case SSL_AD_UNKNOWN_CA:
|
2018-09-13 19:18:07 +00:00
|
|
|
return SSL3_AD_BAD_CERTIFICATE;
|
2015-03-20 15:28:40 +00:00
|
|
|
case SSL_AD_ACCESS_DENIED:
|
2018-09-13 19:18:07 +00:00
|
|
|
return SSL3_AD_HANDSHAKE_FAILURE;
|
2015-03-20 15:28:40 +00:00
|
|
|
case SSL_AD_DECODE_ERROR:
|
2018-09-13 19:18:07 +00:00
|
|
|
return SSL3_AD_HANDSHAKE_FAILURE;
|
2015-03-20 15:28:40 +00:00
|
|
|
case SSL_AD_DECRYPT_ERROR:
|
2018-09-13 19:18:07 +00:00
|
|
|
return SSL3_AD_HANDSHAKE_FAILURE;
|
2015-03-20 15:28:40 +00:00
|
|
|
case SSL_AD_EXPORT_RESTRICTION:
|
2018-09-13 19:18:07 +00:00
|
|
|
return SSL3_AD_HANDSHAKE_FAILURE;
|
2015-03-20 15:28:40 +00:00
|
|
|
case SSL_AD_PROTOCOL_VERSION:
|
2018-09-13 19:18:07 +00:00
|
|
|
return SSL3_AD_HANDSHAKE_FAILURE;
|
2015-03-20 15:28:40 +00:00
|
|
|
case SSL_AD_INSUFFICIENT_SECURITY:
|
2018-09-13 19:18:07 +00:00
|
|
|
return SSL3_AD_HANDSHAKE_FAILURE;
|
2015-03-20 15:28:40 +00:00
|
|
|
case SSL_AD_INTERNAL_ERROR:
|
2018-09-13 19:18:07 +00:00
|
|
|
return SSL3_AD_HANDSHAKE_FAILURE;
|
2015-03-20 15:28:40 +00:00
|
|
|
case SSL_AD_USER_CANCELLED:
|
2018-09-13 19:18:07 +00:00
|
|
|
return SSL3_AD_HANDSHAKE_FAILURE;
|
2015-03-20 15:28:40 +00:00
|
|
|
case SSL_AD_NO_RENEGOTIATION:
|
2018-09-13 19:18:07 +00:00
|
|
|
return -1; /* Don't send it :-) */
|
2015-03-20 15:28:40 +00:00
|
|
|
case SSL_AD_UNSUPPORTED_EXTENSION:
|
2018-09-13 19:18:07 +00:00
|
|
|
return SSL3_AD_HANDSHAKE_FAILURE;
|
2015-03-20 15:28:40 +00:00
|
|
|
case SSL_AD_CERTIFICATE_UNOBTAINABLE:
|
2018-09-13 19:18:07 +00:00
|
|
|
return SSL3_AD_HANDSHAKE_FAILURE;
|
2015-03-20 15:28:40 +00:00
|
|
|
case SSL_AD_UNRECOGNIZED_NAME:
|
2018-09-13 19:18:07 +00:00
|
|
|
return SSL3_AD_HANDSHAKE_FAILURE;
|
2015-03-20 15:28:40 +00:00
|
|
|
case SSL_AD_BAD_CERTIFICATE_STATUS_RESPONSE:
|
2018-09-13 19:18:07 +00:00
|
|
|
return SSL3_AD_HANDSHAKE_FAILURE;
|
2015-03-20 15:28:40 +00:00
|
|
|
case SSL_AD_BAD_CERTIFICATE_HASH_VALUE:
|
2018-09-13 19:18:07 +00:00
|
|
|
return SSL3_AD_HANDSHAKE_FAILURE;
|
2015-03-20 15:28:40 +00:00
|
|
|
case SSL_AD_UNKNOWN_PSK_IDENTITY:
|
2018-09-13 19:18:07 +00:00
|
|
|
return TLS1_AD_UNKNOWN_PSK_IDENTITY;
|
2015-03-20 15:28:40 +00:00
|
|
|
case SSL_AD_INAPPROPRIATE_FALLBACK:
|
2018-09-13 19:18:07 +00:00
|
|
|
return TLS1_AD_INAPPROPRIATE_FALLBACK;
|
|
|
|
case SSL_AD_NO_APPLICATION_PROTOCOL:
|
|
|
|
return TLS1_AD_NO_APPLICATION_PROTOCOL;
|
|
|
|
case SSL_AD_CERTIFICATE_REQUIRED:
|
|
|
|
return SSL_AD_HANDSHAKE_FAILURE;
|
2015-03-20 15:28:40 +00:00
|
|
|
default:
|
2018-09-13 19:18:07 +00:00
|
|
|
return -1;
|
2015-03-20 15:28:40 +00:00
|
|
|
}
|
|
|
|
}
|