summaryrefslogtreecommitdiff
path: root/openssl/ssl/s3_enc.c
diff options
context:
space:
mode:
Diffstat (limited to 'openssl/ssl/s3_enc.c')
-rw-r--r--openssl/ssl/s3_enc.c849
1 files changed, 0 insertions, 849 deletions
diff --git a/openssl/ssl/s3_enc.c b/openssl/ssl/s3_enc.c
deleted file mode 100644
index b1459707..00000000
--- a/openssl/ssl/s3_enc.c
+++ /dev/null
@@ -1,849 +0,0 @@
-/* ssl/s3_enc.c */
-/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
- * All rights reserved.
- *
- * This package is an SSL implementation written
- * by Eric Young (eay@cryptsoft.com).
- * The implementation was written so as to conform with Netscapes SSL.
- *
- * This library is free for commercial and non-commercial use as long as
- * the following conditions are aheared to. The following conditions
- * apply to all code found in this distribution, be it the RC4, RSA,
- * lhash, DES, etc., code; not just the SSL code. The SSL documentation
- * included with this distribution is covered by the same copyright terms
- * except that the holder is Tim Hudson (tjh@cryptsoft.com).
- *
- * Copyright remains Eric Young's, and as such any Copyright notices in
- * the code are not to be removed.
- * If this package is used in a product, Eric Young should be given attribution
- * as the author of the parts of the library used.
- * This can be in the form of a textual message at program startup or
- * in documentation (online or textual) provided with the package.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * "This product includes cryptographic software written by
- * Eric Young (eay@cryptsoft.com)"
- * The word 'cryptographic' can be left out if the rouines from the library
- * being used are not cryptographic related :-).
- * 4. If you include any Windows specific code (or a derivative thereof) from
- * the apps directory (application code) you must include an acknowledgement:
- * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
- *
- * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * The licence and distribution terms for any publically available version or
- * derivative of this code cannot be changed. i.e. this code cannot simply be
- * copied and put under another distribution licence
- * [including the GNU Public Licence.]
- */
-/* ====================================================================
- * Copyright (c) 1998-2007 The OpenSSL Project. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- *
- * 3. All advertising materials mentioning features or use of this
- * software must display the following acknowledgment:
- * "This product includes software developed by the OpenSSL Project
- * for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
- *
- * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
- * endorse or promote products derived from this software without
- * prior written permission. For written permission, please contact
- * openssl-core@openssl.org.
- *
- * 5. Products derived from this software may not be called "OpenSSL"
- * nor may "OpenSSL" appear in their names without prior written
- * permission of the OpenSSL Project.
- *
- * 6. Redistributions of any form whatsoever must retain the following
- * acknowledgment:
- * "This product includes software developed by the OpenSSL Project
- * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
- *
- * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
- * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
- * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
- * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
- * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
- * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
- * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
- * OF THE POSSIBILITY OF SUCH DAMAGE.
- * ====================================================================
- *
- * This product includes cryptographic software written by Eric Young
- * (eay@cryptsoft.com). This product includes software written by Tim
- * Hudson (tjh@cryptsoft.com).
- *
- */
-/* ====================================================================
- * Copyright 2005 Nokia. All rights reserved.
- *
- * The portions of the attached software ("Contribution") is developed by
- * Nokia Corporation and is licensed pursuant to the OpenSSL open source
- * license.
- *
- * The Contribution, originally written by Mika Kousa and Pasi Eronen of
- * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites
- * support (see RFC 4279) to OpenSSL.
- *
- * No patent licenses or other rights except those expressly stated in
- * the OpenSSL open source license shall be deemed granted or received
- * expressly, by implication, estoppel, or otherwise.
- *
- * No assurances are provided by Nokia that the Contribution does not
- * infringe the patent or other intellectual property rights of any third
- * party or that the license provides you with all the necessary rights
- * to make use of the Contribution.
- *
- * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN
- * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA
- * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY
- * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR
- * OTHERWISE.
- */
-
-#include <stdio.h>
-#include "ssl_locl.h"
-#include <openssl/evp.h>
-#include <openssl/md5.h>
-
-static unsigned char 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 unsigned char 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, unsigned char *p);
-static int ssl3_generate_key_block(SSL *s, unsigned char *km, int num)
- {
- EVP_MD_CTX m5;
- EVP_MD_CTX s1;
- unsigned char buf[16],smd[SHA_DIGEST_LENGTH];
- unsigned char c='A';
- unsigned int i,j,k;
-
-#ifdef CHARSET_EBCDIC
- c = os_toascii[c]; /*'A' in ASCII */
-#endif
- k=0;
- EVP_MD_CTX_init(&m5);
- EVP_MD_CTX_init(&s1);
- for (i=0; (int)i<num; i+=MD5_DIGEST_LENGTH)
- {
- k++;
- if (k > sizeof buf)
- {
- /* bug: 'buf' is too small for this ciphersuite */
- SSLerr(SSL_F_SSL3_GENERATE_KEY_BLOCK, ERR_R_INTERNAL_ERROR);
- return 0;
- }
-
- for (j=0; j<k; j++)
- buf[j]=c;
- c++;
- EVP_DigestInit_ex(&s1,EVP_sha1(), NULL);
- EVP_DigestUpdate(&s1,buf,k);
- EVP_DigestUpdate(&s1,s->session->master_key,
- s->session->master_key_length);
- EVP_DigestUpdate(&s1,s->s3->server_random,SSL3_RANDOM_SIZE);
- EVP_DigestUpdate(&s1,s->s3->client_random,SSL3_RANDOM_SIZE);
- EVP_DigestFinal_ex(&s1,smd,NULL);
-
- EVP_DigestInit_ex(&m5,EVP_md5(), NULL);
- EVP_DigestUpdate(&m5,s->session->master_key,
- s->session->master_key_length);
- EVP_DigestUpdate(&m5,smd,SHA_DIGEST_LENGTH);
- if ((int)(i+MD5_DIGEST_LENGTH) > num)
- {
- EVP_DigestFinal_ex(&m5,smd,NULL);
- memcpy(km,smd,(num-i));
- }
- else
- EVP_DigestFinal_ex(&m5,km,NULL);
-
- km+=MD5_DIGEST_LENGTH;
- }
- OPENSSL_cleanse(smd,SHA_DIGEST_LENGTH);
- EVP_MD_CTX_cleanup(&m5);
- EVP_MD_CTX_cleanup(&s1);
- return 1;
- }
-
-int ssl3_change_cipher_state(SSL *s, int which)
- {
- unsigned char *p,*mac_secret;
- unsigned char exp_key[EVP_MAX_KEY_LENGTH];
- unsigned char exp_iv[EVP_MAX_IV_LENGTH];
- unsigned char *ms,*key,*iv,*er1,*er2;
- EVP_CIPHER_CTX *dd;
- const EVP_CIPHER *c;
-#ifndef OPENSSL_NO_COMP
- COMP_METHOD *comp;
-#endif
- const EVP_MD *m;
- EVP_MD_CTX md;
- int is_exp,n,i,j,k,cl;
- int reuse_dd = 0;
-
- is_exp=SSL_C_IS_EXPORT(s->s3->tmp.new_cipher);
- c=s->s3->tmp.new_sym_enc;
- m=s->s3->tmp.new_hash;
- /* m == NULL will lead to a crash later */
- OPENSSL_assert(m);
-#ifndef OPENSSL_NO_COMP
- if (s->s3->tmp.new_compression == NULL)
- comp=NULL;
- else
- comp=s->s3->tmp.new_compression->method;
-#endif
-
- if (which & SSL3_CC_READ)
- {
- if (s->enc_read_ctx != NULL)
- reuse_dd = 1;
- else if ((s->enc_read_ctx=OPENSSL_malloc(sizeof(EVP_CIPHER_CTX))) == NULL)
- goto err;
- else
- /* make sure it's intialized in case we exit later with an error */
- EVP_CIPHER_CTX_init(s->enc_read_ctx);
- dd= s->enc_read_ctx;
-
- ssl_replace_hash(&s->read_hash,m);
-#ifndef OPENSSL_NO_COMP
- /* COMPRESS */
- if (s->expand != NULL)
- {
- COMP_CTX_free(s->expand);
- s->expand=NULL;
- }
- if (comp != NULL)
- {
- s->expand=COMP_CTX_new(comp);
- if (s->expand == NULL)
- {
- SSLerr(SSL_F_SSL3_CHANGE_CIPHER_STATE,SSL_R_COMPRESSION_LIBRARY_ERROR);
- goto err2;
- }
- if (s->s3->rrec.comp == NULL)
- s->s3->rrec.comp=(unsigned char *)
- OPENSSL_malloc(SSL3_RT_MAX_PLAIN_LENGTH);
- if (s->s3->rrec.comp == NULL)
- goto err;
- }
-#endif
- memset(&(s->s3->read_sequence[0]),0,8);
- mac_secret= &(s->s3->read_mac_secret[0]);
- }
- else
- {
- if (s->enc_write_ctx != NULL)
- reuse_dd = 1;
- else if ((s->enc_write_ctx=OPENSSL_malloc(sizeof(EVP_CIPHER_CTX))) == NULL)
- goto err;
- else
- /* make sure it's intialized in case we exit later with an error */
- EVP_CIPHER_CTX_init(s->enc_write_ctx);
- dd= s->enc_write_ctx;
- ssl_replace_hash(&s->write_hash,m);
-#ifndef OPENSSL_NO_COMP
- /* COMPRESS */
- if (s->compress != NULL)
- {
- COMP_CTX_free(s->compress);
- s->compress=NULL;
- }
- if (comp != NULL)
- {
- s->compress=COMP_CTX_new(comp);
- if (s->compress == NULL)
- {
- SSLerr(SSL_F_SSL3_CHANGE_CIPHER_STATE,SSL_R_COMPRESSION_LIBRARY_ERROR);
- goto err2;
- }
- }
-#endif
- memset(&(s->s3->write_sequence[0]),0,8);
- mac_secret= &(s->s3->write_mac_secret[0]);
- }
-
- if (reuse_dd)
- EVP_CIPHER_CTX_cleanup(dd);
-
- p=s->s3->tmp.key_block;
- i=EVP_MD_size(m);
- if (i < 0)
- goto err2;
- cl=EVP_CIPHER_key_length(c);
- j=is_exp ? (cl < SSL_C_EXPORT_KEYLENGTH(s->s3->tmp.new_cipher) ?
- cl : SSL_C_EXPORT_KEYLENGTH(s->s3->tmp.new_cipher)) : cl;
- /* Was j=(is_exp)?5:EVP_CIPHER_key_length(c); */
- k=EVP_CIPHER_iv_length(c);
- if ( (which == SSL3_CHANGE_CIPHER_CLIENT_WRITE) ||
- (which == SSL3_CHANGE_CIPHER_SERVER_READ))
- {
- ms= &(p[ 0]); n=i+i;
- key= &(p[ n]); n+=j+j;
- iv= &(p[ n]); n+=k+k;
- er1= &(s->s3->client_random[0]);
- er2= &(s->s3->server_random[0]);
- }
- else
- {
- n=i;
- ms= &(p[ n]); n+=i+j;
- key= &(p[ n]); n+=j+k;
- iv= &(p[ n]); n+=k;
- er1= &(s->s3->server_random[0]);
- er2= &(s->s3->client_random[0]);
- }
-
- if (n > s->s3->tmp.key_block_length)
- {
- SSLerr(SSL_F_SSL3_CHANGE_CIPHER_STATE,ERR_R_INTERNAL_ERROR);
- goto err2;
- }
-
- EVP_MD_CTX_init(&md);
- memcpy(mac_secret,ms,i);
- if (is_exp)
- {
- /* In here I set both the read and write key/iv to the
- * same value since only the correct one will be used :-).
- */
- EVP_DigestInit_ex(&md,EVP_md5(), NULL);
- EVP_DigestUpdate(&md,key,j);
- EVP_DigestUpdate(&md,er1,SSL3_RANDOM_SIZE);
- EVP_DigestUpdate(&md,er2,SSL3_RANDOM_SIZE);
- EVP_DigestFinal_ex(&md,&(exp_key[0]),NULL);
- key= &(exp_key[0]);
-
- if (k > 0)
- {
- EVP_DigestInit_ex(&md,EVP_md5(), NULL);
- EVP_DigestUpdate(&md,er1,SSL3_RANDOM_SIZE);
- EVP_DigestUpdate(&md,er2,SSL3_RANDOM_SIZE);
- EVP_DigestFinal_ex(&md,&(exp_iv[0]),NULL);
- iv= &(exp_iv[0]);
- }
- }
-
- s->session->key_arg_length=0;
-
- EVP_CipherInit_ex(dd,c,NULL,key,iv,(which & SSL3_CC_WRITE));
-
- OPENSSL_cleanse(&(exp_key[0]),sizeof(exp_key));
- OPENSSL_cleanse(&(exp_iv[0]),sizeof(exp_iv));
- EVP_MD_CTX_cleanup(&md);
- return(1);
-err:
- SSLerr(SSL_F_SSL3_CHANGE_CIPHER_STATE,ERR_R_MALLOC_FAILURE);
-err2:
- return(0);
- }
-
-int ssl3_setup_key_block(SSL *s)
- {
- 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)
- return(1);
-
- if (!ssl_cipher_get_evp(s->session,&c,&hash,NULL,NULL,&comp))
- {
- SSLerr(SSL_F_SSL3_SETUP_KEY_BLOCK,SSL_R_CIPHER_OR_HASH_UNAVAILABLE);
- return(0);
- }
-
- s->s3->tmp.new_sym_enc=c;
- s->s3->tmp.new_hash=hash;
-#ifdef OPENSSL_NO_COMP
- s->s3->tmp.new_compression=NULL;
-#else
- s->s3->tmp.new_compression=comp;
-#endif
-
- num=EVP_MD_size(hash);
- if (num < 0)
- return 0;
-
- num=EVP_CIPHER_key_length(c)+num+EVP_CIPHER_iv_length(c);
- num*=2;
-
- ssl3_cleanup_key_block(s);
-
- if ((p=OPENSSL_malloc(num)) == NULL)
- goto err;
-
- s->s3->tmp.key_block_length=num;
- s->s3->tmp.key_block=p;
-
- ret = ssl3_generate_key_block(s,p,num);
-
- 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;
-
- if (s->session->cipher != NULL)
- {
- if (s->session->cipher->algorithm_enc == SSL_eNULL)
- s->s3->need_empty_fragments = 0;
-
-#ifndef OPENSSL_NO_RC4
- if (s->session->cipher->algorithm_enc == SSL_RC4)
- s->s3->need_empty_fragments = 0;
-#endif
- }
- }
-
- return ret;
-
-err:
- SSLerr(SSL_F_SSL3_SETUP_KEY_BLOCK,ERR_R_MALLOC_FAILURE);
- return(0);
- }
-
-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_enc(SSL *s, int send)
- {
- SSL3_RECORD *rec;
- EVP_CIPHER_CTX *ds;
- unsigned long l;
- int bs,i;
- const EVP_CIPHER *enc;
-
- if (send)
- {
- ds=s->enc_write_ctx;
- rec= &(s->s3->wrec);
- if (s->enc_write_ctx == NULL)
- enc=NULL;
- else
- enc=EVP_CIPHER_CTX_cipher(s->enc_write_ctx);
- }
- else
- {
- ds=s->enc_read_ctx;
- rec= &(s->s3->rrec);
- if (s->enc_read_ctx == NULL)
- enc=NULL;
- else
- enc=EVP_CIPHER_CTX_cipher(s->enc_read_ctx);
- }
-
- if ((s->session == NULL) || (ds == NULL) ||
- (enc == NULL))
- {
- memmove(rec->data,rec->input,rec->length);
- rec->input=rec->data;
- }
- else
- {
- l=rec->length;
- bs=EVP_CIPHER_block_size(ds->cipher);
-
- /* COMPRESS */
-
- if ((bs != 1) && send)
- {
- i=bs-((int)l%bs);
-
- /* we need to add 'i-1' padding bytes */
- l+=i;
- /* the last of these zero bytes will be overwritten
- * with the padding length. */
- memset(&rec->input[rec->length], 0, i);
- rec->length+=i;
- rec->input[l-1]=(i-1);
- }
-
- if (!send)
- {
- if (l == 0 || l%bs != 0)
- {
- SSLerr(SSL_F_SSL3_ENC,SSL_R_BLOCK_CIPHER_PAD_IS_WRONG);
- ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECRYPTION_FAILED);
- return 0;
- }
- /* otherwise, rec->length >= bs */
- }
-
- EVP_Cipher(ds,rec->data,rec->input,l);
-
- if ((bs != 1) && !send)
- {
- i=rec->data[l-1]+1;
- /* SSL 3.0 bounds the number of padding bytes by the block size;
- * padding bytes (except the last one) are arbitrary */
- if (i > bs)
- {
- /* Incorrect padding. SSLerr() and ssl3_alert are done
- * by caller: we don't want to reveal whether this is
- * a decryption error or a MAC verification failure
- * (see http://www.openssl.org/~bodo/tls-cbc.txt) */
- return -1;
- }
- /* now i <= bs <= rec->length */
- rec->length-=i;
- }
- }
- return(1);
- }
-
-void ssl3_init_finished_mac(SSL *s)
- {
- if (s->s3->handshake_buffer) BIO_free(s->s3->handshake_buffer);
- if (s->s3->handshake_dgst) ssl3_free_digest_list(s);
- s->s3->handshake_buffer=BIO_new(BIO_s_mem());
- (void)BIO_set_close(s->s3->handshake_buffer,BIO_CLOSE);
- }
-
-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;
- }
-
-
-
-void ssl3_finish_mac(SSL *s, const unsigned char *buf, int len)
- {
- if (s->s3->handshake_buffer)
- {
- BIO_write (s->s3->handshake_buffer,(void *)buf,len);
- }
- else
- {
- int i;
- for (i=0;i< SSL_MAX_DIGEST;i++)
- {
- if (s->s3->handshake_dgst[i]!= NULL)
- EVP_DigestUpdate(s->s3->handshake_dgst[i],buf,len);
- }
- }
- }
-
-int ssl3_digest_cached_records(SSL *s)
- {
- int i;
- long mask;
- const EVP_MD *md;
- long hdatalen;
- void *hdata;
-
- /* Allocate handshake_dgst array */
- ssl3_free_digest_list(s);
- s->s3->handshake_dgst = OPENSSL_malloc(SSL_MAX_DIGEST * sizeof(EVP_MD_CTX *));
- memset(s->s3->handshake_dgst,0,SSL_MAX_DIGEST *sizeof(EVP_MD_CTX *));
- hdatalen = BIO_get_mem_data(s->s3->handshake_buffer,&hdata);
- if (hdatalen <= 0)
- {
- SSLerr(SSL_F_SSL3_DIGEST_CACHED_RECORDS, SSL_R_BAD_HANDSHAKE_LENGTH);
- return 0;
- }
-
- /* Loop through bitso of algorithm2 field and create MD_CTX-es */
- for (i=0;ssl_get_handshake_digest(i,&mask,&md); i++)
- {
- if ((mask & s->s3->tmp.new_cipher->algorithm2) && md)
- {
- s->s3->handshake_dgst[i]=EVP_MD_CTX_create();
- EVP_DigestInit_ex(s->s3->handshake_dgst[i],md,NULL);
- EVP_DigestUpdate(s->s3->handshake_dgst[i],hdata,hdatalen);
- }
- else
- {
- s->s3->handshake_dgst[i]=NULL;
- }
- }
- /* 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, unsigned char *p)
- {
- return(ssl3_handshake_mac(s,md_nid,NULL,0,p));
- }
-int ssl3_final_finish_mac(SSL *s,
- const char *sender, int len, unsigned char *p)
- {
- int ret;
- ret=ssl3_handshake_mac(s,NID_md5,sender,len,p);
- p+=ret;
- ret+=ssl3_handshake_mac(s,NID_sha1,sender,len,p);
- return(ret);
- }
-static int ssl3_handshake_mac(SSL *s, int md_nid,
- const char *sender, int len, unsigned char *p)
- {
- unsigned int ret;
- int npad,n;
- unsigned int i;
- unsigned char md_buf[EVP_MAX_MD_SIZE];
- EVP_MD_CTX ctx,*d=NULL;
-
- if (s->s3->handshake_buffer)
- if (!ssl3_digest_cached_records(s))
- 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) {
- SSLerr(SSL_F_SSL3_HANDSHAKE_MAC,SSL_R_NO_REQUIRED_DIGEST);
- return 0;
- }
- EVP_MD_CTX_init(&ctx);
- EVP_MD_CTX_copy_ex(&ctx,d);
- 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);
-
- EVP_DigestInit_ex(&ctx,EVP_MD_CTX_md(&ctx), NULL);
- 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((int)ret);
- }
-
-int n_ssl3_mac(SSL *ssl, unsigned char *md, int send)
- {
- SSL3_RECORD *rec;
- unsigned char *mac_sec,*seq;
- EVP_MD_CTX md_ctx;
- const EVP_MD_CTX *hash;
- unsigned char *p,rec_char;
- unsigned int md_size;
- int npad;
- int t;
-
- if (send)
- {
- rec= &(ssl->s3->wrec);
- mac_sec= &(ssl->s3->write_mac_secret[0]);
- seq= &(ssl->s3->write_sequence[0]);
- hash=ssl->write_hash;
- }
- else
- {
- rec= &(ssl->s3->rrec);
- mac_sec= &(ssl->s3->read_mac_secret[0]);
- seq= &(ssl->s3->read_sequence[0]);
- hash=ssl->read_hash;
- }
-
- t=EVP_MD_CTX_size(hash);
- if (t < 0)
- return -1;
- md_size=t;
- npad=(48/md_size)*md_size;
-
- /* Chop the digest off the end :-) */
- EVP_MD_CTX_init(&md_ctx);
-
- EVP_MD_CTX_copy_ex( &md_ctx,hash);
- EVP_DigestUpdate(&md_ctx,mac_sec,md_size);
- EVP_DigestUpdate(&md_ctx,ssl3_pad_1,npad);
- EVP_DigestUpdate(&md_ctx,seq,8);
- rec_char=rec->type;
- EVP_DigestUpdate(&md_ctx,&rec_char,1);
- p=md;
- s2n(rec->length,p);
- EVP_DigestUpdate(&md_ctx,md,2);
- EVP_DigestUpdate(&md_ctx,rec->input,rec->length);
- EVP_DigestFinal_ex( &md_ctx,md,NULL);
-
- EVP_MD_CTX_copy_ex( &md_ctx,hash);
- EVP_DigestUpdate(&md_ctx,mac_sec,md_size);
- EVP_DigestUpdate(&md_ctx,ssl3_pad_2,npad);
- EVP_DigestUpdate(&md_ctx,md,md_size);
- EVP_DigestFinal_ex( &md_ctx,md,&md_size);
-
- EVP_MD_CTX_cleanup(&md_ctx);
-
- ssl3_record_sequence_update(seq);
- return(md_size);
- }
-
-void ssl3_record_sequence_update(unsigned char *seq)
- {
- int i;
-
- for (i=7; i>=0; i--)
- {
- ++seq[i];
- if (seq[i] != 0) break;
- }
- }
-
-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;
- int i,ret=0;
- unsigned int n;
-
- EVP_MD_CTX_init(&ctx);
- for (i=0; i<3; i++)
- {
- EVP_DigestInit_ex(&ctx,s->ctx->sha1, NULL);
- EVP_DigestUpdate(&ctx,salt[i],strlen((const char *)salt[i]));
- EVP_DigestUpdate(&ctx,p,len);
- EVP_DigestUpdate(&ctx,&(s->s3->client_random[0]),
- SSL3_RANDOM_SIZE);
- EVP_DigestUpdate(&ctx,&(s->s3->server_random[0]),
- SSL3_RANDOM_SIZE);
- EVP_DigestFinal_ex(&ctx,buf,&n);
-
- EVP_DigestInit_ex(&ctx,s->ctx->md5, NULL);
- EVP_DigestUpdate(&ctx,p,len);
- EVP_DigestUpdate(&ctx,buf,n);
- EVP_DigestFinal_ex(&ctx,out,&n);
- out+=n;
- ret+=n;
- }
- EVP_MD_CTX_cleanup(&ctx);
- 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);
- default: return(-1);
- }
- }
-