/* ssl/s3_enc.c */
-/* Copyright (C) 1995-1997 Eric Young (eay@cryptsoft.com)
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
* All rights reserved.
*
* This package is an SSL implementation written
*/
#include <stdio.h>
-#include "evp.h"
+#include <openssl/md5.h>
+#include <openssl/sha.h>
+#include <openssl/evp.h>
#include "ssl_locl.h"
static unsigned char ssl3_pad_1[48]={
0x5c,0x5c,0x5c,0x5c,0x5c,0x5c,0x5c,0x5c,
0x5c,0x5c,0x5c,0x5c,0x5c,0x5c,0x5c,0x5c };
-int ssl3_change_cipher_state(s,which)
-SSL *s;
-int which;
+static int ssl3_handshake_mac(SSL *s, EVP_MD_CTX *in_ctx,
+ const char *sender, int len, unsigned char *p);
+
+static void 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];
+ unsigned char c='A';
+ int i,j,k;
+
+#ifdef CHARSET_EBCDIC
+ c = os_toascii[c]; /*'A' in ASCII */
+#endif
+ k=0;
+ for (i=0; i<num; i+=MD5_DIGEST_LENGTH)
+ {
+ k++;
+ 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,
+ 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);
+
+ MD5_Init( &m5);
+ MD5_Update(&m5,s->session->master_key,
+ s->session->master_key_length);
+ MD5_Update(&m5,smd,SHA_DIGEST_LENGTH);
+ if ((i+MD5_DIGEST_LENGTH) > num)
+ {
+ MD5_Final(smd,&m5);
+ memcpy(km,smd,(num-i));
+ }
+ else
+ MD5_Final(km,&m5);
+
+ km+=MD5_DIGEST_LENGTH;
+ }
+ memset(smd,0,SHA_DIGEST_LENGTH);
+ }
+
+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;
+ const EVP_CIPHER *c;
+ COMP_METHOD *comp;
+ const EVP_MD *m;
MD5_CTX md;
- int exp,n,i,j,k;
+ 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]);
}
+ EVP_CIPHER_CTX_init(dd);
+
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))
MD5_Final(&(exp_key[0]),&md);
key= &(exp_key[0]);
- MD5_Init(&md);
- MD5_Update(&md,er1,SSL3_RANDOM_SIZE);
- MD5_Update(&md,er2,SSL3_RANDOM_SIZE);
- MD5_Final(&(exp_iv[0]),&md);
- iv= &(exp_iv[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);
+ iv= &(exp_iv[0]);
+ }
}
- s->session->key_arg_length=k;
- if (k > 0)
- memcpy(&(s->session->key_arg[0]),iv,k);
+ s->session->key_arg_length=0;
EVP_CipherInit(dd,c,key,iv,(which & SSL3_CC_WRITE));
+
memset(&(exp_key[0]),0,sizeof(exp_key));
memset(&(exp_iv[0]),0,sizeof(exp_iv));
return(1);
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;
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);
rec->input=rec->data;
l=rec->length;
bs=EVP_CIPHER_block_size(ds->cipher);
+ /* COMPRESS */
+
/* This should be using (bs-1) and bs instead of 7 and 8 */
if ((bs != 1) && send)
{
if (i > bs)
{
SSLerr(SSL_F_SSL3_ENC,SSL_R_BLOCK_CIPHER_PAD_IS_WRONG);
- ssl3_send_alert(s,SSL3_AL_FATAL,SSL3_AD_BAD_RECORD_MAC);
+ ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECRYPT_ERROR);
return(0);
}
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),EVP_md5());
- EVP_DigestInit(&(s->s3->finish_dgst2),EVP_sha1());
+ 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_final_finish_mac(s,in_ctx,sender,p)
-SSL *s;
-EVP_MD_CTX *in_ctx;
-unsigned char *sender;
-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(SSL *s, EVP_MD_CTX *ctx1, EVP_MD_CTX *ctx2,
+ const char *sender, int len, unsigned char *p)
+ {
+ int ret;
+
+ ret=ssl3_handshake_mac(s,ctx1,sender,len,p);
+ p+=ret;
+ ret+=ssl3_handshake_mac(s,ctx2,sender,len,p);
+ return(ret);
+ }
+
+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_copy(&ctx,in_ctx);
n=EVP_MD_CTX_size(&ctx);
npad=(48/n)*n;
if (sender != NULL)
- EVP_DigestUpdate(&ctx,sender,4);
+ 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(&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);
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;
md_size=EVP_MD_size(hash);
npad=(48/md_size)*md_size;
-#ifdef MAC_DEBUG
-printf("npad=%d md_size=%d",npad,md_size);
-printf("\nmsec=");
-for (i=0; i<md_size; i++) printf("%02X ",mac_sec[i]);
-printf("\npad1=");
-for (i=0; i<npad; i++) printf("%02X ",ssl3_pad_1[i]);
-printf("\nseq =");
-for (i=0; i<8; i++) printf("%02X ",seq[i]);
-printf("\nreqt=%02X len=%04X\n",rec->type,rec->length);
-for (i=0; i<rec->length; i++) printf("%02X",rec->input[i]);
-printf("\n");
-#endif
-
/* Chop the digest off the end :-) */
EVP_DigestInit( &md_ctx,hash);
for (i=7; i>=0; i--)
if (++seq[i]) break;
-#ifdef MAC_DEBUG
-printf("md=");
-for (i=0; i<md_size; i++) printf("%02X ",md[i]);
-printf("\n");
-#endif
-
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;
for (i=0; i<3; i++)
{
- EVP_DigestInit(&ctx,EVP_sha1());
- EVP_DigestUpdate(&ctx,salt[i],strlen((char *)salt[i]));
+ EVP_DigestInit(&ctx,s->ctx->sha1);
+ 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);
SSL3_RANDOM_SIZE);
EVP_DigestFinal(&ctx,buf,&n);
- EVP_DigestInit(&ctx,EVP_md5());
+ EVP_DigestInit(&ctx,s->ctx->md5);
EVP_DigestUpdate(&ctx,p,len);
EVP_DigestUpdate(&ctx,buf,n);
EVP_DigestFinal(&ctx,out,&n);
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 :-) */
+ default: return(-1);
+ }
+ }
+
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