* [including the GNU Public Licence.]
*/
/* ====================================================================
- * Copyright (c) 1998-2002 The OpenSSL Project. All rights reserved.
+ * 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
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, EVP_MD_CTX *in_ctx,
+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;
int ssl3_change_cipher_state(SSL *s, int which)
{
- unsigned char *p,*key_block,*mac_secret;
+ 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;
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
- key_block=s->s3->tmp.key_block;
if (which & SSL3_CC_READ)
{
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;
- s->read_hash=m;
+
+ ssl_replace_hash(&s->read_hash,m);
#ifndef OPENSSL_NO_COMP
/* COMPRESS */
if (s->expand != 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;
- s->write_hash=m;
+ ssl_replace_hash(&s->write_hash,m);
#ifndef OPENSSL_NO_COMP
/* COMPRESS */
if (s->compress != NULL)
if (reuse_dd)
EVP_CIPHER_CTX_cleanup(dd);
- EVP_CIPHER_CTX_init(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;
if (s->s3->tmp.key_block_length != 0)
return(1);
- if (!ssl_cipher_get_evp(s->session,&c,&hash,&comp))
+ 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_compression=comp;
#endif
- num=EVP_CIPHER_key_length(c)+EVP_MD_size(hash)+EVP_CIPHER_iv_length(c);
+ 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 (s->session->cipher != NULL)
{
- if ((s->session->cipher->algorithms & SSL_ENC_MASK) == SSL_eNULL)
+ if (s->session->cipher->algorithm_enc == SSL_eNULL)
s->s3->need_empty_fragments = 0;
#ifndef OPENSSL_NO_RC4
- if ((s->session->cipher->algorithms & SSL_ENC_MASK) == SSL_RC4)
+ if (s->session->cipher->algorithm_enc == SSL_RC4)
s->s3->need_empty_fragments = 0;
#endif
}
void ssl3_init_finished_mac(SSL *s)
{
- EVP_DigestInit_ex(&(s->s3->finish_dgst1),s->ctx->md5, NULL);
- EVP_DigestInit_ex(&(s->s3->finish_dgst2),s->ctx->sha1, NULL);
+ 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)
{
- EVP_DigestUpdate(&(s->s3->finish_dgst1),buf,len);
- EVP_DigestUpdate(&(s->s3->finish_dgst2),buf,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_cert_verify_mac(SSL *s, EVP_MD_CTX *ctx, unsigned char *p)
+int ssl3_digest_cached_records(SSL *s)
{
- return(ssl3_handshake_mac(s,ctx,NULL,0,p));
+ 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_final_finish_mac(SSL *s, EVP_MD_CTX *ctx1, EVP_MD_CTX *ctx2,
+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,ctx1,sender,len,p);
+ ret=ssl3_handshake_mac(s,NID_md5,sender,len,p);
p+=ret;
- ret+=ssl3_handshake_mac(s,ctx2,sender,len,p);
+ ret+=ssl3_handshake_mac(s,NID_sha1,sender,len,p);
return(ret);
}
-
-static int ssl3_handshake_mac(SSL *s, EVP_MD_CTX *in_ctx,
+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;
+ EVP_MD_CTX ctx,*d=NULL;
- EVP_MD_CTX_init(&ctx);
- EVP_MD_CTX_copy_ex(&ctx,in_ctx);
+ 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);
- npad=(48/n)*n;
+ if (n < 0)
+ return 0;
+ npad=(48/n)*n;
if (sender != NULL)
EVP_DigestUpdate(&ctx,sender,len);
EVP_DigestUpdate(&ctx,s->session->master_key,
return((int)ret);
}
-int ssl3_mac(SSL *ssl, unsigned char *md, int send)
+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 *hash;
+ const EVP_MD_CTX *hash;
unsigned char *p,rec_char;
unsigned int md_size;
int npad;
+ int t;
if (send)
{
hash=ssl->read_hash;
}
- md_size=EVP_MD_size(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_DigestInit_ex( &md_ctx,hash, NULL);
+ 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);
EVP_DigestUpdate(&md_ctx,rec->input,rec->length);
EVP_DigestFinal_ex( &md_ctx,md,NULL);
- EVP_DigestInit_ex( &md_ctx,hash, 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);
projects / openssl.git / blobdiff