/* 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.
*g
* 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).
*g
* 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.
*g
* 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) fromg
* the apps directory (application code) you must include an acknowledgement:
* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
*g
* 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.
*g
* 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.g
*
* 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 <assert.h>
#include <stdio.h>
#include <string.h>
#include <openssl/err.h>
#include <openssl/evp.h>
#include <openssl/mem.h>
#include <openssl/md5.h>
#include <openssl/obj.h>
#include "internal.h"
static const uint8_t ssl3_pad_1[48] = {
0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36,
0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36,
0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36,
0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36,
};
static const uint8_t ssl3_pad_2[48] = {
0x5c, 0x5c, 0x5c, 0x5c, 0x5c, 0x5c, 0x5c, 0x5c, 0x5c, 0x5c, 0x5c, 0x5c,
0x5c, 0x5c, 0x5c, 0x5c, 0x5c, 0x5c, 0x5c, 0x5c, 0x5c, 0x5c, 0x5c, 0x5c,
0x5c, 0x5c, 0x5c, 0x5c, 0x5c, 0x5c, 0x5c, 0x5c, 0x5c, 0x5c, 0x5c, 0x5c,
0x5c, 0x5c, 0x5c, 0x5c, 0x5c, 0x5c, 0x5c, 0x5c, 0x5c, 0x5c, 0x5c, 0x5c,
};
static int ssl3_handshake_mac(SSL *s, int md_nid, const char *sender, int len,
uint8_t *p);
int ssl3_prf(SSL *s, uint8_t *out, size_t out_len, const uint8_t *secret,
size_t secret_len, const char *label, size_t label_len,
const uint8_t *seed1, size_t seed1_len,
const uint8_t *seed2, size_t seed2_len) {
EVP_MD_CTX md5;
EVP_MD_CTX sha1;
uint8_t buf[16], smd[SHA_DIGEST_LENGTH];
uint8_t c = 'A';
size_t i, j, k;
k = 0;
EVP_MD_CTX_init(&md5);
EVP_MD_CTX_init(&sha1);
for (i = 0; i < out_len; i += MD5_DIGEST_LENGTH) {
k++;
if (k > sizeof(buf)) {
/* bug: 'buf' is too small for this ciphersuite */
OPENSSL_PUT_ERROR(SSL, ssl3_prf, ERR_R_INTERNAL_ERROR);
return 0;
}
for (j = 0; j < k; j++) {
buf[j] = c;
}
c++;
if (!EVP_DigestInit_ex(&sha1, EVP_sha1(), NULL)) {
OPENSSL_PUT_ERROR(SSL, ssl3_prf, ERR_LIB_EVP);
return 0;
}
EVP_DigestUpdate(&sha1, buf, k);
EVP_DigestUpdate(&sha1, secret, secret_len);
/* |label| is ignored for SSLv3. */
if (seed1_len) {
EVP_DigestUpdate(&sha1, seed1, seed1_len);
}
if (seed2_len) {
EVP_DigestUpdate(&sha1, seed2, seed2_len);
}
EVP_DigestFinal_ex(&sha1, smd, NULL);
if (!EVP_DigestInit_ex(&md5, EVP_md5(), NULL)) {
OPENSSL_PUT_ERROR(SSL, ssl3_prf, ERR_LIB_EVP);
return 0;
}
EVP_DigestUpdate(&md5, secret, secret_len);
EVP_DigestUpdate(&md5, smd, SHA_DIGEST_LENGTH);
if (i + MD5_DIGEST_LENGTH > out_len) {
EVP_DigestFinal_ex(&md5, smd, NULL);
memcpy(out, smd, out_len - i);
} else {
EVP_DigestFinal_ex(&md5, out, NULL);
}
out += MD5_DIGEST_LENGTH;
}
OPENSSL_cleanse(smd, SHA_DIGEST_LENGTH);
EVP_MD_CTX_cleanup(&md5);
EVP_MD_CTX_cleanup(&sha1);
return 1;
}
void ssl3_cleanup_key_block(SSL *s) {
if (s->s3->tmp.key_block != NULL) {
OPENSSL_cleanse(s->s3->tmp.key_block, s->s3->tmp.key_block_length);
OPENSSL_free(s->s3->tmp.key_block);
s->s3->tmp.key_block = NULL;
}
s->s3->tmp.key_block_length = 0;
}
int ssl3_init_finished_mac(SSL *s) {
BIO_free(s->s3->handshake_buffer);
ssl3_free_digest_list(s);
s->s3->handshake_buffer = BIO_new(BIO_s_mem());
if (s->s3->handshake_buffer == NULL) {
return 0;
}
BIO_set_close(s->s3->handshake_buffer, BIO_CLOSE);
return 1;
}
void ssl3_free_digest_list(SSL *s) {
int i;
if (!s->s3->handshake_dgst) {
return;
}
for (i = 0; i < SSL_MAX_DIGEST; i++) {
if (s->s3->handshake_dgst[i]) {
EVP_MD_CTX_destroy(s->s3->handshake_dgst[i]);
}
}
OPENSSL_free(s->s3->handshake_dgst);
s->s3->handshake_dgst = NULL;
}
int ssl3_finish_mac(SSL *s, const uint8_t *buf, int len) {
int i;
if (s->s3->handshake_buffer) {
return BIO_write(s->s3->handshake_buffer, (void *)buf, len) >= 0;
}
for (i = 0; i < SSL_MAX_DIGEST; i++) {
if (s->s3->handshake_dgst[i] != NULL) {
EVP_DigestUpdate(s->s3->handshake_dgst[i], buf, len);
}
}
return 1;
}
int ssl3_digest_cached_records(
SSL *s, enum should_free_handshake_buffer_t should_free_handshake_buffer) {
int i;
uint32_t mask;
const EVP_MD *md;
const uint8_t *hdata;
size_t hdatalen;
/* Allocate handshake_dgst array */
ssl3_free_digest_list(s);
s->s3->handshake_dgst = OPENSSL_malloc(SSL_MAX_DIGEST * sizeof(EVP_MD_CTX *));
if (s->s3->handshake_dgst == NULL) {
OPENSSL_PUT_ERROR(SSL, ssl3_digest_cached_records, ERR_R_MALLOC_FAILURE);
return 0;
}
memset(s->s3->handshake_dgst, 0, SSL_MAX_DIGEST * sizeof(EVP_MD_CTX *));
if (!BIO_mem_contents(s->s3->handshake_buffer, &hdata, &hdatalen)) {
OPENSSL_PUT_ERROR(SSL, ssl3_digest_cached_records,
SSL_R_BAD_HANDSHAKE_LENGTH);
return 0;
}
/* Loop through bits of algorithm2 field and create MD_CTX-es */
for (i = 0; ssl_get_handshake_digest(&mask, &md, i); i++) {
if ((mask & ssl_get_algorithm2(s)) && md) {
s->s3->handshake_dgst[i] = EVP_MD_CTX_create();
if (s->s3->handshake_dgst[i] == NULL) {
OPENSSL_PUT_ERROR(SSL, ssl3_digest_cached_records, ERR_LIB_EVP);
return 0;
}
if (!EVP_DigestInit_ex(s->s3->handshake_dgst[i], md, NULL)) {
EVP_MD_CTX_destroy(s->s3->handshake_dgst[i]);
s->s3->handshake_dgst[i] = NULL;
OPENSSL_PUT_ERROR(SSL, ssl3_digest_cached_records, ERR_LIB_EVP);
return 0;
}
EVP_DigestUpdate(s->s3->handshake_dgst[i], hdata, hdatalen);
} else {
s->s3->handshake_dgst[i] = NULL;
}
}
if (should_free_handshake_buffer == free_handshake_buffer) {
/* Free handshake_buffer BIO */
BIO_free(s->s3->handshake_buffer);
s->s3->handshake_buffer = NULL;
}
return 1;
}
int ssl3_cert_verify_mac(SSL *s, int md_nid, uint8_t *p) {
return ssl3_handshake_mac(s, md_nid, NULL, 0, p);
}
int ssl3_final_finish_mac(SSL *s, const char *sender, int len, uint8_t *p) {
int ret, sha1len;
ret = ssl3_handshake_mac(s, NID_md5, sender, len, p);
if (ret == 0) {
return 0;
}
p += ret;
sha1len = ssl3_handshake_mac(s, NID_sha1, sender, len, p);
if (sha1len == 0) {
return 0;
}
ret += sha1len;
return ret;
}
static int ssl3_handshake_mac(SSL *s, int md_nid, const char *sender, int len,
uint8_t *p) {
unsigned int ret;
int npad, n;
unsigned int i;
uint8_t md_buf[EVP_MAX_MD_SIZE];
EVP_MD_CTX ctx, *d = NULL;
if (s->s3->handshake_buffer &&
!ssl3_digest_cached_records(s, free_handshake_buffer)) {
return 0;
}
/* Search for digest of specified type in the handshake_dgst array. */
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) {
OPENSSL_PUT_ERROR(SSL, ssl3_handshake_mac, SSL_R_NO_REQUIRED_DIGEST);
return 0;
}
EVP_MD_CTX_init(&ctx);
if (!EVP_MD_CTX_copy_ex(&ctx, d)) {
EVP_MD_CTX_cleanup(&ctx);
OPENSSL_PUT_ERROR(SSL, ssl3_handshake_mac, ERR_LIB_EVP);
return 0;
}
n = EVP_MD_CTX_size(&ctx);
if (n < 0) {
return 0;
}
npad = (48 / n) * n;
if (sender != NULL) {
EVP_DigestUpdate(&ctx, sender, len);
}
EVP_DigestUpdate(&ctx, s->session->master_key, s->session->master_key_length);
EVP_DigestUpdate(&ctx, ssl3_pad_1, npad);
EVP_DigestFinal_ex(&ctx, md_buf, &i);
if (!EVP_DigestInit_ex(&ctx, EVP_MD_CTX_md(&ctx), NULL)) {
EVP_MD_CTX_cleanup(&ctx);
OPENSSL_PUT_ERROR(SSL, ssl3_handshake_mac, ERR_LIB_EVP);
return 0;
}
EVP_DigestUpdate(&ctx, s->session->master_key, s->session->master_key_length);
EVP_DigestUpdate(&ctx, ssl3_pad_2, npad);
EVP_DigestUpdate(&ctx, md_buf, i);
EVP_DigestFinal_ex(&ctx, p, &ret);
EVP_MD_CTX_cleanup(&ctx);
return ret;
}
int ssl3_record_sequence_update(uint8_t *seq, size_t seq_len) {
size_t i;
for (i = seq_len - 1; i < seq_len; i--) {
++seq[i];
if (seq[i] != 0) {
return 1;
}
}
OPENSSL_PUT_ERROR(SSL, ssl3_record_sequence_update, ERR_R_OVERFLOW);
return 0;
}
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 SSL3_AD_INAPPROPRIATE_FALLBACK;
default:
return -1;
}
}