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- /* 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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;
- }
- }
|