*/
#include <stdio.h>
-#include "evp.h"
+#include <openssl/evp.h>
#include "ssl_locl.h"
+#include <openssl/md5.h>
static unsigned char ssl3_pad_1[48]={
0x36,0x36,0x36,0x36,0x36,0x36,0x36,0x36,
0x5c,0x5c,0x5c,0x5c,0x5c,0x5c,0x5c,0x5c,
0x5c,0x5c,0x5c,0x5c,0x5c,0x5c,0x5c,0x5c };
-#ifndef NO_PROTO
static int ssl3_handshake_mac(SSL *s, EVP_MD_CTX *in_ctx,
- unsigned char *sender, int len, unsigned char *p);
-#else
-static int ssl3_handshake_mac();
-#endif
+ const char *sender, int len, unsigned char *p);
-static void ssl3_generate_key_block(s,km,num)
-SSL *s;
-unsigned char *km;
-int num;
+static int ssl3_generate_key_block(SSL *s, unsigned char *km, int num)
{
- MD5_CTX m5;
- SHA_CTX s1;
- unsigned char buf[8],smd[SHA_DIGEST_LENGTH];
+ EVP_MD_CTX m5;
+ EVP_MD_CTX s1;
+ unsigned char buf[16],smd[SHA_DIGEST_LENGTH];
unsigned char c='A';
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; 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++;
- SHA1_Init( &s1);
- SHA1_Update(&s1,buf,k);
- SHA1_Update(&s1,s->session->master_key,
+ EVP_DigestInit(&s1,EVP_sha1());
+ EVP_DigestUpdate(&s1,buf,k);
+ EVP_DigestUpdate(&s1,s->session->master_key,
s->session->master_key_length);
- SHA1_Update(&s1,s->s3->server_random,SSL3_RANDOM_SIZE);
- SHA1_Update(&s1,s->s3->client_random,SSL3_RANDOM_SIZE);
- SHA1_Final( smd,&s1);
+ EVP_DigestUpdate(&s1,s->s3->server_random,SSL3_RANDOM_SIZE);
+ EVP_DigestUpdate(&s1,s->s3->client_random,SSL3_RANDOM_SIZE);
+ EVP_DigestFinal(&s1,smd,NULL);
- MD5_Init( &m5);
- MD5_Update(&m5,s->session->master_key,
+ EVP_DigestInit(&m5,EVP_md5());
+ EVP_DigestUpdate(&m5,s->session->master_key,
s->session->master_key_length);
- MD5_Update(&m5,smd,SHA_DIGEST_LENGTH);
+ EVP_DigestUpdate(&m5,smd,SHA_DIGEST_LENGTH);
if ((i+MD5_DIGEST_LENGTH) > num)
{
- MD5_Final(smd,&m5);
+ EVP_DigestFinal(&m5,smd,NULL);
memcpy(km,smd,(num-i));
}
else
- MD5_Final(km,&m5);
+ EVP_DigestFinal(&m5,km,NULL);
km+=MD5_DIGEST_LENGTH;
}
memset(smd,0,SHA_DIGEST_LENGTH);
+ EVP_MD_CTX_cleanup(&m5);
+ EVP_MD_CTX_cleanup(&s1);
+ return 1;
}
-int ssl3_change_cipher_state(s,which)
-SSL *s;
-int which;
+int ssl3_change_cipher_state(SSL *s, int which)
{
unsigned char *p,*key_block,*mac_secret;
unsigned char exp_key[EVP_MAX_KEY_LENGTH];
unsigned char exp_iv[EVP_MAX_KEY_LENGTH];
unsigned char *ms,*key,*iv,*er1,*er2;
EVP_CIPHER_CTX *dd;
- EVP_CIPHER *c;
- SSL_COMPRESSION *comp;
- EVP_MD *m;
- MD5_CTX md;
- int exp,n,i,j,k;
+ const EVP_CIPHER *c;
+ COMP_METHOD *comp;
+ const EVP_MD *m;
+ EVP_MD_CTX md;
+ int exp,n,i,j,k,cl;
- exp=(s->s3->tmp.new_cipher->algorithms & SSL_EXPORT)?1:0;
+ exp=SSL_C_IS_EXPORT(s->s3->tmp.new_cipher);
c=s->s3->tmp.new_sym_enc;
m=s->s3->tmp.new_hash;
- comp=s->s3->tmp.new_compression;
+ if (s->s3->tmp.new_compression == NULL)
+ comp=NULL;
+ else
+ comp=s->s3->tmp.new_compression->method;
key_block=s->s3->tmp.key_block;
if (which & SSL3_CC_READ)
{
if ((s->enc_read_ctx == NULL) &&
((s->enc_read_ctx=(EVP_CIPHER_CTX *)
- Malloc(sizeof(EVP_CIPHER_CTX))) == NULL))
+ OPENSSL_malloc(sizeof(EVP_CIPHER_CTX))) == NULL))
goto err;
dd= s->enc_read_ctx;
s->read_hash=m;
- s->read_compression=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;
+ }
memset(&(s->s3->read_sequence[0]),0,8);
mac_secret= &(s->s3->read_mac_secret[0]);
}
{
if ((s->enc_write_ctx == NULL) &&
((s->enc_write_ctx=(EVP_CIPHER_CTX *)
- Malloc(sizeof(EVP_CIPHER_CTX))) == NULL))
+ OPENSSL_malloc(sizeof(EVP_CIPHER_CTX))) == NULL))
goto err;
dd= s->enc_write_ctx;
s->write_hash=m;
- s->write_compression=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;
+ }
+ }
memset(&(s->s3->write_sequence[0]),0,8);
mac_secret= &(s->s3->write_mac_secret[0]);
}
p=s->s3->tmp.key_block;
i=EVP_MD_size(m);
- j=(exp)?5:EVP_CIPHER_key_length(c);
+ cl=EVP_CIPHER_key_length(c);
+ j=exp ? (cl < SSL_C_EXPORT_KEYLENGTH(s->s3->tmp.new_cipher) ?
+ cl : SSL_C_EXPORT_KEYLENGTH(s->s3->tmp.new_cipher)) : cl;
+ /* Was j=(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))
if (n > s->s3->tmp.key_block_length)
{
- SSLerr(SSL_F_SSL3_CHANGE_CIPHER_STATE,SSL_R_INTERNAL_ERROR);
+ SSLerr(SSL_F_SSL3_CHANGE_CIPHER_STATE,ERR_R_INTERNAL_ERROR);
goto err2;
}
+ EVP_MD_CTX_init(&md);
memcpy(mac_secret,ms,i);
if (exp)
{
/* In here I set both the read and write key/iv to the
* same value since only the correct one will be used :-).
*/
- MD5_Init(&md);
- MD5_Update(&md,key,j);
- MD5_Update(&md,er1,SSL3_RANDOM_SIZE);
- MD5_Update(&md,er2,SSL3_RANDOM_SIZE);
- MD5_Final(&(exp_key[0]),&md);
+ EVP_DigestInit(&md,EVP_md5());
+ EVP_DigestUpdate(&md,key,j);
+ EVP_DigestUpdate(&md,er1,SSL3_RANDOM_SIZE);
+ EVP_DigestUpdate(&md,er2,SSL3_RANDOM_SIZE);
+ EVP_DigestFinal(&md,&(exp_key[0]),NULL);
key= &(exp_key[0]);
if (k > 0)
{
- MD5_Init(&md);
- MD5_Update(&md,er1,SSL3_RANDOM_SIZE);
- MD5_Update(&md,er2,SSL3_RANDOM_SIZE);
- MD5_Final(&(exp_iv[0]),&md);
+ EVP_DigestInit(&md,EVP_md5());
+ EVP_DigestUpdate(&md,er1,SSL3_RANDOM_SIZE);
+ EVP_DigestUpdate(&md,er2,SSL3_RANDOM_SIZE);
+ EVP_DigestFinal(&md,&(exp_iv[0]),NULL);
iv= &(exp_iv[0]);
}
}
memset(&(exp_key[0]),0,sizeof(exp_key));
memset(&(exp_iv[0]),0,sizeof(exp_iv));
+ EVP_MD_CTX_cleanup(&md);
return(1);
err:
SSLerr(SSL_F_SSL3_CHANGE_CIPHER_STATE,ERR_R_MALLOC_FAILURE);
return(0);
}
-int ssl3_setup_key_block(s)
-SSL *s;
+int ssl3_setup_key_block(SSL *s)
{
unsigned char *p;
- EVP_CIPHER *c;
- EVP_MD *hash;
- int num,exp;
+ const EVP_CIPHER *c;
+ const EVP_MD *hash;
+ int num;
+ SSL_COMP *comp;
if (s->s3->tmp.key_block_length != 0)
return(1);
- if (!ssl_cipher_get_evp(s->session->cipher,&c,&hash))
+ if (!ssl_cipher_get_evp(s->session,&c,&hash,&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;
-
- exp=(s->session->cipher->algorithms & SSL_EXPORT)?1:0;
+ s->s3->tmp.new_compression=comp;
num=EVP_CIPHER_key_length(c)+EVP_MD_size(hash)+EVP_CIPHER_iv_length(c);
num*=2;
ssl3_cleanup_key_block(s);
- if ((p=(unsigned char *)Malloc(num)) == NULL)
+ if ((p=OPENSSL_malloc(num)) == NULL)
goto err;
s->s3->tmp.key_block_length=num;
s->s3->tmp.key_block=p;
- ssl3_generate_key_block(s,p,num);
+ return ssl3_generate_key_block(s,p,num);
- return(1);
err:
SSLerr(SSL_F_SSL3_SETUP_KEY_BLOCK,ERR_R_MALLOC_FAILURE);
return(0);
}
-void ssl3_cleanup_key_block(s)
-SSL *s;
+void ssl3_cleanup_key_block(SSL *s)
{
if (s->s3->tmp.key_block != NULL)
{
memset(s->s3->tmp.key_block,0,
s->s3->tmp.key_block_length);
- Free(s->s3->tmp.key_block);
+ OPENSSL_free(s->s3->tmp.key_block);
s->s3->tmp.key_block=NULL;
}
s->s3->tmp.key_block_length=0;
}
-int ssl3_enc(s,send)
-SSL *s;
-int send;
+int ssl3_enc(SSL *s, int send)
{
SSL3_RECORD *rec;
EVP_CIPHER_CTX *ds;
unsigned long l;
int bs,i;
- EVP_CIPHER *enc;
- SSL_COMPRESSION *comp;
+ const EVP_CIPHER *enc;
if (send)
{
ds=s->enc_write_ctx;
rec= &(s->s3->wrec);
if (s->enc_write_ctx == NULL)
- { enc=NULL; comp=NULL; }
+ enc=NULL;
else
- {
enc=EVP_CIPHER_CTX_cipher(s->enc_write_ctx);
- comp=s->write_compression;
- }
}
else
{
ds=s->enc_read_ctx;
rec= &(s->s3->rrec);
if (s->enc_read_ctx == NULL)
- { enc=NULL; comp=NULL; }
+ enc=NULL;
else
- {
enc=EVP_CIPHER_CTX_cipher(s->enc_read_ctx);
- comp=s->read_compression;
- }
}
if ((s->session == NULL) || (ds == NULL) ||
- ((enc == NULL) && (comp == NULL)))
+ (enc == NULL))
{
- memcpy(rec->data,rec->input,rec->length);
+ memmove(rec->data,rec->input,rec->length);
rec->input=rec->data;
}
else
l=rec->length;
bs=EVP_CIPHER_block_size(ds->cipher);
- /* This should be using (bs-1) and bs instead of 7 and 8 */
+ /* COMPRESS */
+
if ((bs != 1) && send)
{
i=bs-((int)l%bs);
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;
+ }
+ }
+
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 that last) are arbitrary */
if (i > bs)
{
- SSLerr(SSL_F_SSL3_ENC,SSL_R_BLOCK_CIPHER_PAD_IS_WRONG);
- ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECRYPT_ERROR);
- return(0);
+ /* 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;
}
rec->length-=i;
}
return(1);
}
-void ssl3_init_finished_mac(s)
-SSL *s;
+void ssl3_init_finished_mac(SSL *s)
{
EVP_DigestInit(&(s->s3->finish_dgst1),s->ctx->md5);
EVP_DigestInit(&(s->s3->finish_dgst2),s->ctx->sha1);
}
-void ssl3_finish_mac(s,buf,len)
-SSL *s;
-unsigned char *buf;
-int len;
+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);
}
-int ssl3_cert_verify_mac(s,ctx,p)
-SSL *s;
-EVP_MD_CTX *ctx;
-unsigned char *p;
+int ssl3_cert_verify_mac(SSL *s, EVP_MD_CTX *ctx, unsigned char *p)
{
return(ssl3_handshake_mac(s,ctx,NULL,0,p));
}
-int ssl3_final_finish_mac(s,ctx1,ctx2,sender,len,p)
-SSL *s;
-EVP_MD_CTX *ctx1,*ctx2;
-unsigned char *sender;
-int len;
-unsigned char *p;
+int ssl3_final_finish_mac(SSL *s, EVP_MD_CTX *ctx1, EVP_MD_CTX *ctx2,
+ const char *sender, int len, unsigned char *p)
{
int ret;
return(ret);
}
-static int ssl3_handshake_mac(s,in_ctx,sender,len,p)
-SSL *s;
-EVP_MD_CTX *in_ctx;
-unsigned char *sender;
-int len;
-unsigned char *p;
+static int ssl3_handshake_mac(SSL *s, EVP_MD_CTX *in_ctx,
+ const char *sender, int len, unsigned char *p)
{
unsigned int ret;
int npad,n;
unsigned char md_buf[EVP_MAX_MD_SIZE];
EVP_MD_CTX ctx;
- memcpy(&ctx,in_ctx,sizeof(EVP_MD_CTX));
+ EVP_MD_CTX_init(&ctx);
+ EVP_MD_CTX_copy(&ctx,in_ctx);
n=EVP_MD_CTX_size(&ctx);
npad=(48/n)*n;
EVP_DigestUpdate(&ctx,ssl3_pad_1,npad);
EVP_DigestFinal(&ctx,md_buf,&i);
- EVP_DigestInit(&ctx,EVP_MD_CTX_type(&ctx));
+ EVP_DigestInit(&ctx,EVP_MD_CTX_md(&ctx));
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(&ctx,p,&ret);
- memset(&ctx,0,sizeof(EVP_MD_CTX));
+ EVP_MD_CTX_cleanup(&ctx);
return((int)ret);
}
-int ssl3_mac(ssl,md,send)
-SSL *ssl;
-unsigned char *md;
-int send;
+int ssl3_mac(SSL *ssl, unsigned char *md, int send)
{
SSL3_RECORD *rec;
unsigned char *mac_sec,*seq;
EVP_MD_CTX md_ctx;
- EVP_MD *hash;
+ const EVP_MD *hash;
unsigned char *p,rec_char;
unsigned int md_size;
int npad,i;
npad=(48/md_size)*md_size;
/* Chop the digest off the end :-) */
+ EVP_MD_CTX_init(&md_ctx);
EVP_DigestInit( &md_ctx,hash);
EVP_DigestUpdate(&md_ctx,mac_sec,md_size);
EVP_DigestUpdate(&md_ctx,md,md_size);
EVP_DigestFinal( &md_ctx,md,&md_size);
+ EVP_MD_CTX_cleanup(&md_ctx);
+
for (i=7; i>=0; i--)
- if (++seq[i]) break;
+ {
+ ++seq[i];
+ if (seq[i] != 0) break;
+ }
return(md_size);
}
-int ssl3_generate_master_secret(s,out,p,len)
-SSL *s;
-unsigned char *out;
-unsigned char *p;
-int len;
+int ssl3_generate_master_secret(SSL *s, unsigned char *out, unsigned char *p,
+ int len)
{
- static unsigned char *salt[3]={
- (unsigned char *)"A",
- (unsigned char *)"BB",
- (unsigned char *)"CCC",
+ 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(&ctx,s->ctx->sha1);
- EVP_DigestUpdate(&ctx,salt[i],strlen((char *)salt[i]));
+ 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);
out+=n;
ret+=n;
}
+ EVP_MD_CTX_cleanup(&ctx);
return(ret);
}
-int ssl3_alert_code(code)
-int code;
+int ssl3_alert_code(int code)
{
switch (code)
{
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_RESTRICION: 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_CANCLED: 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 :-) */
default: return(-1);
}
projects / openssl.git / blobdiff