Openssl 1.1.0h
This commit is contained in:
Hakase
+550
@@ -0,0 +1,550 @@
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/*
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* Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
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*
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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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*/
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/* ====================================================================
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* Copyright 2005 Nokia. All rights reserved.
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*
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* The portions of the attached software ("Contribution") is developed by
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* Nokia Corporation and is licensed pursuant to the OpenSSL open source
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* license.
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*
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* The Contribution, originally written by Mika Kousa and Pasi Eronen of
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* Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites
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* support (see RFC 4279) to OpenSSL.
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*
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* No patent licenses or other rights except those expressly stated in
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* the OpenSSL open source license shall be deemed granted or received
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* expressly, by implication, estoppel, or otherwise.
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*
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* No assurances are provided by Nokia that the Contribution does not
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* infringe the patent or other intellectual property rights of any third
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* party or that the license provides you with all the necessary rights
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* to make use of the Contribution.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN
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* ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA
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* SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY
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* OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR
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* OTHERWISE.
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*/
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#include <stdio.h>
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#include "ssl_locl.h"
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#include <openssl/evp.h>
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#include <openssl/md5.h>
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static int ssl3_generate_key_block(SSL *s, unsigned char *km, int num)
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{
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EVP_MD_CTX *m5;
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EVP_MD_CTX *s1;
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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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int ret = 0;
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#ifdef CHARSET_EBCDIC
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c = os_toascii[c]; /* 'A' in ASCII */
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#endif
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k = 0;
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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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SSLerr(SSL_F_SSL3_GENERATE_KEY_BLOCK, 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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for (i = 0; (int)i < num; i += MD5_DIGEST_LENGTH) {
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k++;
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if (k > sizeof(buf)) {
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/* bug: 'buf' is too small for this ciphersuite */
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SSLerr(SSL_F_SSL3_GENERATE_KEY_BLOCK, ERR_R_INTERNAL_ERROR);
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goto err;
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}
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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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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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goto err;
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if ((int)(i + MD5_DIGEST_LENGTH) > num) {
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if (!EVP_DigestFinal_ex(m5, smd, NULL))
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goto err;
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memcpy(km, smd, (num - i));
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} else {
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if (!EVP_DigestFinal_ex(m5, km, NULL))
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goto err;
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}
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km += MD5_DIGEST_LENGTH;
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}
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OPENSSL_cleanse(smd, sizeof(smd));
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ret = 1;
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err:
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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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}
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int ssl3_change_cipher_state(SSL *s, int which)
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{
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unsigned char *p, *mac_secret;
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unsigned char exp_key[EVP_MAX_KEY_LENGTH];
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unsigned char exp_iv[EVP_MAX_IV_LENGTH];
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unsigned char *ms, *key, *iv;
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EVP_CIPHER_CTX *dd;
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const EVP_CIPHER *c;
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#ifndef OPENSSL_NO_COMP
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COMP_METHOD *comp;
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#endif
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const EVP_MD *m;
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int n, i, j, k, cl;
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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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OPENSSL_assert(m);
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#ifndef OPENSSL_NO_COMP
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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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#endif
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if (which & SSL3_CC_READ) {
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if (s->enc_read_ctx != NULL)
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reuse_dd = 1;
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else if ((s->enc_read_ctx = EVP_CIPHER_CTX_new()) == NULL)
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goto err;
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else
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/*
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* make sure it's initialised in case we exit later with an error
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*/
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EVP_CIPHER_CTX_reset(s->enc_read_ctx);
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dd = s->enc_read_ctx;
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if (ssl_replace_hash(&s->read_hash, m) == NULL) {
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SSLerr(SSL_F_SSL3_CHANGE_CIPHER_STATE, ERR_R_INTERNAL_ERROR);
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goto err2;
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}
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#ifndef OPENSSL_NO_COMP
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/* COMPRESS */
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COMP_CTX_free(s->expand);
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s->expand = NULL;
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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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SSLerr(SSL_F_SSL3_CHANGE_CIPHER_STATE,
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SSL_R_COMPRESSION_LIBRARY_ERROR);
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goto err2;
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}
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}
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#endif
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RECORD_LAYER_reset_read_sequence(&s->rlayer);
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mac_secret = &(s->s3->read_mac_secret[0]);
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} else {
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if (s->enc_write_ctx != NULL)
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reuse_dd = 1;
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else if ((s->enc_write_ctx = EVP_CIPHER_CTX_new()) == NULL)
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goto err;
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else
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/*
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* make sure it's initialised in case we exit later with an error
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*/
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EVP_CIPHER_CTX_reset(s->enc_write_ctx);
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dd = s->enc_write_ctx;
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if (ssl_replace_hash(&s->write_hash, m) == NULL) {
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SSLerr(SSL_F_SSL3_CHANGE_CIPHER_STATE, ERR_R_INTERNAL_ERROR);
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goto err2;
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}
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#ifndef OPENSSL_NO_COMP
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/* COMPRESS */
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COMP_CTX_free(s->compress);
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s->compress = NULL;
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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) {
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SSLerr(SSL_F_SSL3_CHANGE_CIPHER_STATE,
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SSL_R_COMPRESSION_LIBRARY_ERROR);
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goto err2;
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}
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}
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#endif
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RECORD_LAYER_reset_write_sequence(&s->rlayer);
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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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EVP_CIPHER_CTX_reset(dd);
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p = s->s3->tmp.key_block;
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i = EVP_MD_size(m);
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if (i < 0)
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goto err2;
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cl = EVP_CIPHER_key_length(c);
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j = cl;
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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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} else {
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n = i;
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ms = &(p[n]);
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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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iv = &(p[n]);
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n += k;
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}
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if (n > s->s3->tmp.key_block_length) {
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SSLerr(SSL_F_SSL3_CHANGE_CIPHER_STATE, ERR_R_INTERNAL_ERROR);
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goto err2;
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}
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memcpy(mac_secret, ms, i);
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if (!EVP_CipherInit_ex(dd, c, NULL, key, iv, (which & SSL3_CC_WRITE)))
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goto err2;
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OPENSSL_cleanse(exp_key, sizeof(exp_key));
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OPENSSL_cleanse(exp_iv, sizeof(exp_iv));
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return (1);
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err:
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SSLerr(SSL_F_SSL3_CHANGE_CIPHER_STATE, ERR_R_MALLOC_FAILURE);
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err2:
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OPENSSL_cleanse(exp_key, sizeof(exp_key));
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OPENSSL_cleanse(exp_iv, sizeof(exp_iv));
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return (0);
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}
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int ssl3_setup_key_block(SSL *s)
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{
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unsigned char *p;
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const EVP_CIPHER *c;
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const EVP_MD *hash;
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int num;
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int ret = 0;
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SSL_COMP *comp;
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if (s->s3->tmp.key_block_length != 0)
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return (1);
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if (!ssl_cipher_get_evp(s->session, &c, &hash, NULL, NULL, &comp, 0)) {
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SSLerr(SSL_F_SSL3_SETUP_KEY_BLOCK, SSL_R_CIPHER_OR_HASH_UNAVAILABLE);
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return (0);
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}
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s->s3->tmp.new_sym_enc = c;
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s->s3->tmp.new_hash = hash;
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#ifdef OPENSSL_NO_COMP
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s->s3->tmp.new_compression = NULL;
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#else
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s->s3->tmp.new_compression = comp;
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#endif
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num = EVP_MD_size(hash);
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if (num < 0)
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return 0;
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num = EVP_CIPHER_key_length(c) + num + EVP_CIPHER_iv_length(c);
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num *= 2;
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ssl3_cleanup_key_block(s);
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if ((p = OPENSSL_malloc(num)) == NULL)
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goto err;
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s->s3->tmp.key_block_length = num;
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s->s3->tmp.key_block = p;
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ret = ssl3_generate_key_block(s, p, num);
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if (!(s->options & SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS)) {
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/*
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* enable vulnerability countermeasure for CBC ciphers with known-IV
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* problem (http://www.openssl.org/~bodo/tls-cbc.txt)
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*/
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s->s3->need_empty_fragments = 1;
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if (s->session->cipher != NULL) {
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if (s->session->cipher->algorithm_enc == SSL_eNULL)
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s->s3->need_empty_fragments = 0;
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#ifndef OPENSSL_NO_RC4
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if (s->session->cipher->algorithm_enc == SSL_RC4)
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s->s3->need_empty_fragments = 0;
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#endif
|
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}
|
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}
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|
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return ret;
|
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|
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err:
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SSLerr(SSL_F_SSL3_SETUP_KEY_BLOCK, ERR_R_MALLOC_FAILURE);
|
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return (0);
|
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}
|
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|
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void ssl3_cleanup_key_block(SSL *s)
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{
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OPENSSL_clear_free(s->s3->tmp.key_block, s->s3->tmp.key_block_length);
|
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s->s3->tmp.key_block = NULL;
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s->s3->tmp.key_block_length = 0;
|
||||
}
|
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int ssl3_init_finished_mac(SSL *s)
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{
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BIO *buf = BIO_new(BIO_s_mem());
|
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||||
if (buf == NULL) {
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SSLerr(SSL_F_SSL3_INIT_FINISHED_MAC, ERR_R_MALLOC_FAILURE);
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return 0;
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}
|
||||
ssl3_free_digest_list(s);
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||||
s->s3->handshake_buffer = buf;
|
||||
(void)BIO_set_close(s->s3->handshake_buffer, BIO_CLOSE);
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return 1;
|
||||
}
|
||||
|
||||
/*
|
||||
* Free digest list. Also frees handshake buffer since they are always freed
|
||||
* together.
|
||||
*/
|
||||
|
||||
void ssl3_free_digest_list(SSL *s)
|
||||
{
|
||||
BIO_free(s->s3->handshake_buffer);
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s->s3->handshake_buffer = NULL;
|
||||
EVP_MD_CTX_free(s->s3->handshake_dgst);
|
||||
s->s3->handshake_dgst = NULL;
|
||||
}
|
||||
|
||||
int ssl3_finish_mac(SSL *s, const unsigned char *buf, int len)
|
||||
{
|
||||
if (s->s3->handshake_dgst == NULL)
|
||||
/* Note: this writes to a memory BIO so a failure is a fatal error */
|
||||
return BIO_write(s->s3->handshake_buffer, (void *)buf, len) == len;
|
||||
else
|
||||
return EVP_DigestUpdate(s->s3->handshake_dgst, buf, len);
|
||||
}
|
||||
|
||||
int ssl3_digest_cached_records(SSL *s, int keep)
|
||||
{
|
||||
const EVP_MD *md;
|
||||
long hdatalen;
|
||||
void *hdata;
|
||||
|
||||
if (s->s3->handshake_dgst == NULL) {
|
||||
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;
|
||||
}
|
||||
|
||||
s->s3->handshake_dgst = EVP_MD_CTX_new();
|
||||
if (s->s3->handshake_dgst == NULL) {
|
||||
SSLerr(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)) {
|
||||
SSLerr(SSL_F_SSL3_DIGEST_CACHED_RECORDS, ERR_R_INTERNAL_ERROR);
|
||||
return 0;
|
||||
}
|
||||
}
|
||||
if (keep == 0) {
|
||||
BIO_free(s->s3->handshake_buffer);
|
||||
s->s3->handshake_buffer = NULL;
|
||||
}
|
||||
|
||||
return 1;
|
||||
}
|
||||
|
||||
int ssl3_final_finish_mac(SSL *s, const char *sender, int len, unsigned char *p)
|
||||
{
|
||||
int ret;
|
||||
EVP_MD_CTX *ctx = NULL;
|
||||
|
||||
if (!ssl3_digest_cached_records(s, 0))
|
||||
return 0;
|
||||
|
||||
if (EVP_MD_CTX_type(s->s3->handshake_dgst) != NID_md5_sha1) {
|
||||
SSLerr(SSL_F_SSL3_FINAL_FINISH_MAC, SSL_R_NO_REQUIRED_DIGEST);
|
||||
return 0;
|
||||
}
|
||||
|
||||
ctx = EVP_MD_CTX_new();
|
||||
if (ctx == NULL) {
|
||||
SSLerr(SSL_F_SSL3_FINAL_FINISH_MAC, ERR_R_MALLOC_FAILURE);
|
||||
return 0;
|
||||
}
|
||||
if (!EVP_MD_CTX_copy_ex(ctx, s->s3->handshake_dgst)) {
|
||||
SSLerr(SSL_F_SSL3_FINAL_FINISH_MAC, ERR_R_INTERNAL_ERROR);
|
||||
return 0;
|
||||
}
|
||||
|
||||
ret = EVP_MD_CTX_size(ctx);
|
||||
if (ret < 0) {
|
||||
EVP_MD_CTX_reset(ctx);
|
||||
return 0;
|
||||
}
|
||||
|
||||
if ((sender != NULL && EVP_DigestUpdate(ctx, sender, len) <= 0)
|
||||
|| EVP_MD_CTX_ctrl(ctx, EVP_CTRL_SSL3_MASTER_SECRET,
|
||||
s->session->master_key_length,
|
||||
s->session->master_key) <= 0
|
||||
|| EVP_DigestFinal_ex(ctx, p, NULL) <= 0) {
|
||||
SSLerr(SSL_F_SSL3_FINAL_FINISH_MAC, ERR_R_INTERNAL_ERROR);
|
||||
ret = 0;
|
||||
}
|
||||
|
||||
EVP_MD_CTX_free(ctx);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
int ssl3_generate_master_secret(SSL *s, unsigned char *out, unsigned char *p,
|
||||
int len)
|
||||
{
|
||||
static const unsigned char *salt[3] = {
|
||||
#ifndef CHARSET_EBCDIC
|
||||
(const unsigned char *)"A",
|
||||
(const unsigned char *)"BB",
|
||||
(const unsigned char *)"CCC",
|
||||
#else
|
||||
(const unsigned char *)"\x41",
|
||||
(const unsigned char *)"\x42\x42",
|
||||
(const unsigned char *)"\x43\x43\x43",
|
||||
#endif
|
||||
};
|
||||
unsigned char buf[EVP_MAX_MD_SIZE];
|
||||
EVP_MD_CTX *ctx = EVP_MD_CTX_new();
|
||||
int i, ret = 0;
|
||||
unsigned int n;
|
||||
|
||||
if (ctx == NULL) {
|
||||
SSLerr(SSL_F_SSL3_GENERATE_MASTER_SECRET, ERR_R_MALLOC_FAILURE);
|
||||
return 0;
|
||||
}
|
||||
for (i = 0; i < 3; i++) {
|
||||
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
|
||||
|| 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) {
|
||||
SSLerr(SSL_F_SSL3_GENERATE_MASTER_SECRET, ERR_R_INTERNAL_ERROR);
|
||||
ret = 0;
|
||||
break;
|
||||
}
|
||||
out += n;
|
||||
ret += n;
|
||||
}
|
||||
EVP_MD_CTX_free(ctx);
|
||||
|
||||
OPENSSL_cleanse(buf, sizeof(buf));
|
||||
return (ret);
|
||||
}
|
||||
|
||||
int ssl3_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 (SSL3_AD_BAD_RECORD_MAC);
|
||||
case SSL_AD_RECORD_OVERFLOW:
|
||||
return (SSL3_AD_BAD_RECORD_MAC);
|
||||
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 (SSL3_AD_NO_CERTIFICATE);
|
||||
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 (SSL3_AD_BAD_CERTIFICATE);
|
||||
case SSL_AD_ACCESS_DENIED:
|
||||
return (SSL3_AD_HANDSHAKE_FAILURE);
|
||||
case SSL_AD_DECODE_ERROR:
|
||||
return (SSL3_AD_HANDSHAKE_FAILURE);
|
||||
case SSL_AD_DECRYPT_ERROR:
|
||||
return (SSL3_AD_HANDSHAKE_FAILURE);
|
||||
case SSL_AD_EXPORT_RESTRICTION:
|
||||
return (SSL3_AD_HANDSHAKE_FAILURE);
|
||||
case SSL_AD_PROTOCOL_VERSION:
|
||||
return (SSL3_AD_HANDSHAKE_FAILURE);
|
||||
case SSL_AD_INSUFFICIENT_SECURITY:
|
||||
return (SSL3_AD_HANDSHAKE_FAILURE);
|
||||
case SSL_AD_INTERNAL_ERROR:
|
||||
return (SSL3_AD_HANDSHAKE_FAILURE);
|
||||
case SSL_AD_USER_CANCELLED:
|
||||
return (SSL3_AD_HANDSHAKE_FAILURE);
|
||||
case SSL_AD_NO_RENEGOTIATION:
|
||||
return (-1); /* Don't send it :-) */
|
||||
case SSL_AD_UNSUPPORTED_EXTENSION:
|
||||
return (SSL3_AD_HANDSHAKE_FAILURE);
|
||||
case SSL_AD_CERTIFICATE_UNOBTAINABLE:
|
||||
return (SSL3_AD_HANDSHAKE_FAILURE);
|
||||
case SSL_AD_UNRECOGNIZED_NAME:
|
||||
return (SSL3_AD_HANDSHAKE_FAILURE);
|
||||
case SSL_AD_BAD_CERTIFICATE_STATUS_RESPONSE:
|
||||
return (SSL3_AD_HANDSHAKE_FAILURE);
|
||||
case SSL_AD_BAD_CERTIFICATE_HASH_VALUE:
|
||||
return (SSL3_AD_HANDSHAKE_FAILURE);
|
||||
case SSL_AD_UNKNOWN_PSK_IDENTITY:
|
||||
return (TLS1_AD_UNKNOWN_PSK_IDENTITY);
|
||||
case SSL_AD_INAPPROPRIATE_FALLBACK:
|
||||
return (TLS1_AD_INAPPROPRIATE_FALLBACK);
|
||||
case SSL_AD_NO_APPLICATION_PROTOCOL:
|
||||
return (TLS1_AD_NO_APPLICATION_PROTOCOL);
|
||||
default:
|
||||
return (-1);
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user