diff options
Diffstat (limited to 'ssl/s3_enc.c')
| -rw-r--r-- | ssl/s3_enc.c | 1421 |
1 files changed, 715 insertions, 706 deletions
diff --git a/ssl/s3_enc.c b/ssl/s3_enc.c index 89c133e..152f40d 100644 --- a/ssl/s3_enc.c +++ b/ssl/s3_enc.c @@ -5,21 +5,21 @@ * 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: @@ -34,10 +34,10 @@ * 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 + * 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 @@ -49,7 +49,7 @@ * 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 @@ -63,7 +63,7 @@ * are met: * * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. + * 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 @@ -140,333 +140,329 @@ #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 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); + 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; +{ + 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 */ + c = os_toascii[c]; /* 'A' in ASCII */ #endif - k=0; - EVP_MD_CTX_init(&m5); - EVP_MD_CTX_set_flags(&m5, EVP_MD_CTX_FLAG_NON_FIPS_ALLOW); - 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; - } + k = 0; + EVP_MD_CTX_init(&m5); + EVP_MD_CTX_set_flags(&m5, EVP_MD_CTX_FLAG_NON_FIPS_ALLOW); + 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; +{ + 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; + 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); + 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; + 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); + 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; - } + /* 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); + 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; - } - } + /* 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); - } + 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; +{ + 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; + s->s3->tmp.new_compression = NULL; #else - s->s3->tmp.new_compression=comp; + s->s3->tmp.new_compression = comp; #endif - num=EVP_MD_size(hash); - if (num < 0) - return 0; + num = EVP_MD_size(hash); + if (num < 0) + return 0; + + num = EVP_CIPHER_key_length(c) + num + EVP_CIPHER_iv_length(c); + num *= 2; - num=EVP_CIPHER_key_length(c)+num+EVP_CIPHER_iv_length(c); - num*=2; + ssl3_cleanup_key_block(s); - ssl3_cleanup_key_block(s); + if ((p = OPENSSL_malloc(num)) == NULL) + goto err; - if ((p=OPENSSL_malloc(num)) == NULL) - goto err; + s->s3->tmp.key_block_length = num; + s->s3->tmp.key_block = p; - s->s3->tmp.key_block_length=num; - s->s3->tmp.key_block=p; + ret = ssl3_generate_key_block(s, p, num); - 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->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; - 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; + 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); - } + 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; - } - -/* ssl3_enc encrypts/decrypts the record in |s->wrec| / |s->rrec|, respectively. +{ + 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; +} + +/*- + * ssl3_enc encrypts/decrypts the record in |s->wrec| / |s->rrec|, respectively. * * Returns: * 0: (in non-constant time) if the record is publically invalid (i.e. too @@ -476,432 +472,445 @@ void ssl3_cleanup_key_block(SSL *s) * occured. */ int ssl3_enc(SSL *s, int send) - { - SSL3_RECORD *rec; - EVP_CIPHER_CTX *ds; - unsigned long l; - int bs,i,mac_size=0; - 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) - return 0; - /* otherwise, rec->length >= bs */ - } - - if(EVP_Cipher(ds,rec->data,rec->input,l) < 1) - return -1; - - if (EVP_MD_CTX_md(s->read_hash) != NULL) - mac_size = EVP_MD_CTX_size(s->read_hash); - if ((bs != 1) && !send) - return ssl3_cbc_remove_padding(s, rec, bs, mac_size); - } - return(1); - } +{ + SSL3_RECORD *rec; + EVP_CIPHER_CTX *ds; + unsigned long l; + int bs, i, mac_size = 0; + 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) + return 0; + /* otherwise, rec->length >= bs */ + } + + if (EVP_Cipher(ds, rec->data, rec->input, l) < 1) + return -1; + + if (EVP_MD_CTX_md(s->read_hash) != NULL) + mac_size = EVP_MD_CTX_size(s->read_hash); + if ((bs != 1) && !send) + return ssl3_cbc_remove_padding(s, rec, bs, mac_size); + } + 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; - } - - +{ + 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 && !(s->s3->flags & TLS1_FLAGS_KEEP_HANDSHAKE)) - { - 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); - } - } - } +{ + if (s->s3->handshake_buffer + && !(s->s3->flags & TLS1_FLAGS_KEEP_HANDSHAKE)) { + 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 & ssl_get_algorithm2(s)) && md) - { - s->s3->handshake_dgst[i]=EVP_MD_CTX_create(); +{ + 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 & ssl_get_algorithm2(s)) && md) { + s->s3->handshake_dgst[i] = EVP_MD_CTX_create(); #ifdef OPENSSL_FIPS - if (EVP_MD_nid(md) == NID_md5) - { - EVP_MD_CTX_set_flags(s->s3->handshake_dgst[i], - EVP_MD_CTX_FLAG_NON_FIPS_ALLOW); - } + if (EVP_MD_nid(md) == NID_md5) { + EVP_MD_CTX_set_flags(s->s3->handshake_dgst[i], + EVP_MD_CTX_FLAG_NON_FIPS_ALLOW); + } #endif - 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; - } - } - if (!(s->s3->flags & TLS1_FLAGS_KEEP_HANDSHAKE)) - { - /* Free handshake_buffer BIO */ - BIO_free(s->s3->handshake_buffer); - s->s3->handshake_buffer = NULL; - } - - return 1; - } + 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; + } + } + if (!(s->s3->flags & TLS1_FLAGS_KEEP_HANDSHAKE)) { + /* 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, 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); - } +{ + 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, 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, 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_set_flags(&ctx, EVP_MD_CTX_FLAG_NON_FIPS_ALLOW); - 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); - } + 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_set_flags(&ctx, EVP_MD_CTX_FLAG_NON_FIPS_ALLOW); + 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; - size_t md_size, orig_len; - 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; - - /* kludge: ssl3_cbc_remove_padding passes padding length in rec->type */ - orig_len = rec->length+md_size+((unsigned int)rec->type>>8); - rec->type &= 0xff; - - if (!send && - EVP_CIPHER_CTX_mode(ssl->enc_read_ctx) == EVP_CIPH_CBC_MODE && - ssl3_cbc_record_digest_supported(hash)) - { - /* This is a CBC-encrypted record. We must avoid leaking any - * timing-side channel information about how many blocks of - * data we are hashing because that gives an attacker a - * timing-oracle. */ - - /* npad is, at most, 48 bytes and that's with MD5: - * 16 + 48 + 8 (sequence bytes) + 1 + 2 = 75. - * - * With SHA-1 (the largest hash speced for SSLv3) the hash size - * goes up 4, but npad goes down by 8, resulting in a smaller - * total size. */ - unsigned char header[75]; - unsigned j = 0; - memcpy(header+j, mac_sec, md_size); - j += md_size; - memcpy(header+j, ssl3_pad_1, npad); - j += npad; - memcpy(header+j, seq, 8); - j += 8; - header[j++] = rec->type; - header[j++] = rec->length >> 8; - header[j++] = rec->length & 0xff; - - ssl3_cbc_digest_record( - hash, - md, &md_size, - header, rec->input, - rec->length + md_size, orig_len, - mac_sec, md_size, - 1 /* is SSLv3 */); - } - else - { - unsigned int md_size_u; - /* 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_u); - md_size = md_size_u; - - EVP_MD_CTX_cleanup(&md_ctx); - } - - ssl3_record_sequence_update(seq); - return(md_size); - } +{ + SSL3_RECORD *rec; + unsigned char *mac_sec, *seq; + EVP_MD_CTX md_ctx; + const EVP_MD_CTX *hash; + unsigned char *p, rec_char; + size_t md_size, orig_len; + 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; + + /* + * kludge: ssl3_cbc_remove_padding passes padding length in rec->type + */ + orig_len = rec->length + md_size + ((unsigned int)rec->type >> 8); + rec->type &= 0xff; + + if (!send && + EVP_CIPHER_CTX_mode(ssl->enc_read_ctx) == EVP_CIPH_CBC_MODE && + ssl3_cbc_record_digest_supported(hash)) { + /* + * This is a CBC-encrypted record. We must avoid leaking any + * timing-side channel information about how many blocks of data we + * are hashing because that gives an attacker a timing-oracle. + */ + + /*- + * npad is, at most, 48 bytes and that's with MD5: + * 16 + 48 + 8 (sequence bytes) + 1 + 2 = 75. + * + * With SHA-1 (the largest hash speced for SSLv3) the hash size + * goes up 4, but npad goes down by 8, resulting in a smaller + * total size. + */ + unsigned char header[75]; + unsigned j = 0; + memcpy(header + j, mac_sec, md_size); + j += md_size; + memcpy(header + j, ssl3_pad_1, npad); + j += npad; + memcpy(header + j, seq, 8); + j += 8; + header[j++] = rec->type; + header[j++] = rec->length >> 8; + header[j++] = rec->length & 0xff; + + /* Final param == is SSLv3 */ + ssl3_cbc_digest_record(hash, + md, &md_size, + header, rec->input, + rec->length + md_size, orig_len, + mac_sec, md_size, 1); + } else { + unsigned int md_size_u; + /* 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_u); + md_size = md_size_u; + + EVP_MD_CTX_cleanup(&md_ctx); + } + + ssl3_record_sequence_update(seq); + return (md_size); +} void ssl3_record_sequence_update(unsigned char *seq) - { - int i; +{ + int i; - for (i=7; i>=0; i--) - { - ++seq[i]; - if (seq[i] != 0) break; - } - } + 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]={ + int len) +{ + static const unsigned char *salt[3] = { #ifndef CHARSET_EBCDIC - (const unsigned char *)"A", - (const unsigned char *)"BB", - (const unsigned char *)"CCC", + (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", + (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); - } + }; + 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); + OPENSSL_cleanse(buf, sizeof buf); + 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); - case SSL_AD_INAPPROPRIATE_FALLBACK:return(TLS1_AD_INAPPROPRIATE_FALLBACK); - default: return(-1); - } - } +{ + 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 (TLS1_AD_INAPPROPRIATE_FALLBACK); + default: + return (-1); + } +} |