diff options
Diffstat (limited to 'openssl/ssl/t1_enc.c')
| -rw-r--r-- | openssl/ssl/t1_enc.c | 2113 |
1 files changed, 1092 insertions, 1021 deletions
diff --git a/openssl/ssl/t1_enc.c b/openssl/ssl/t1_enc.c index 1308c0344..4e2845fa6 100644 --- a/openssl/ssl/t1_enc.c +++ b/openssl/ssl/t1_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 @@ -138,541 +138,580 @@ #include <stdio.h> #include "ssl_locl.h" #ifndef OPENSSL_NO_COMP -#include <openssl/comp.h> +# include <openssl/comp.h> #endif #include <openssl/evp.h> #include <openssl/hmac.h> #include <openssl/md5.h> #include <openssl/rand.h> #ifdef KSSL_DEBUG -#include <openssl/des.h> +# include <openssl/des.h> #endif /* seed1 through seed5 are virtually concatenated */ static int tls1_P_hash(const EVP_MD *md, const unsigned char *sec, - int sec_len, - const void *seed1, int seed1_len, - const void *seed2, int seed2_len, - const void *seed3, int seed3_len, - const void *seed4, int seed4_len, - const void *seed5, int seed5_len, - unsigned char *out, int olen) - { - int chunk; - size_t j; - EVP_MD_CTX ctx, ctx_tmp; - EVP_PKEY *mac_key; - unsigned char A1[EVP_MAX_MD_SIZE]; - size_t A1_len; - int ret = 0; - - chunk=EVP_MD_size(md); - OPENSSL_assert(chunk >= 0); - - EVP_MD_CTX_init(&ctx); - EVP_MD_CTX_init(&ctx_tmp); - EVP_MD_CTX_set_flags(&ctx, EVP_MD_CTX_FLAG_NON_FIPS_ALLOW); - EVP_MD_CTX_set_flags(&ctx_tmp, EVP_MD_CTX_FLAG_NON_FIPS_ALLOW); - mac_key = EVP_PKEY_new_mac_key(EVP_PKEY_HMAC, NULL, sec, sec_len); - if (!mac_key) - goto err; - if (!EVP_DigestSignInit(&ctx,NULL,md, NULL, mac_key)) - goto err; - if (!EVP_DigestSignInit(&ctx_tmp,NULL,md, NULL, mac_key)) - goto err; - if (seed1 && !EVP_DigestSignUpdate(&ctx,seed1,seed1_len)) - goto err; - if (seed2 && !EVP_DigestSignUpdate(&ctx,seed2,seed2_len)) - goto err; - if (seed3 && !EVP_DigestSignUpdate(&ctx,seed3,seed3_len)) - goto err; - if (seed4 && !EVP_DigestSignUpdate(&ctx,seed4,seed4_len)) - goto err; - if (seed5 && !EVP_DigestSignUpdate(&ctx,seed5,seed5_len)) - goto err; - if (!EVP_DigestSignFinal(&ctx,A1,&A1_len)) - goto err; - - for (;;) - { - /* Reinit mac contexts */ - if (!EVP_DigestSignInit(&ctx,NULL,md, NULL, mac_key)) - goto err; - if (!EVP_DigestSignInit(&ctx_tmp,NULL,md, NULL, mac_key)) - goto err; - if (!EVP_DigestSignUpdate(&ctx,A1,A1_len)) - goto err; - if (!EVP_DigestSignUpdate(&ctx_tmp,A1,A1_len)) - goto err; - if (seed1 && !EVP_DigestSignUpdate(&ctx,seed1,seed1_len)) - goto err; - if (seed2 && !EVP_DigestSignUpdate(&ctx,seed2,seed2_len)) - goto err; - if (seed3 && !EVP_DigestSignUpdate(&ctx,seed3,seed3_len)) - goto err; - if (seed4 && !EVP_DigestSignUpdate(&ctx,seed4,seed4_len)) - goto err; - if (seed5 && !EVP_DigestSignUpdate(&ctx,seed5,seed5_len)) - goto err; - - if (olen > chunk) - { - if (!EVP_DigestSignFinal(&ctx,out,&j)) - goto err; - out+=j; - olen-=j; - /* calc the next A1 value */ - if (!EVP_DigestSignFinal(&ctx_tmp,A1,&A1_len)) - goto err; - } - else /* last one */ - { - if (!EVP_DigestSignFinal(&ctx,A1,&A1_len)) - goto err; - memcpy(out,A1,olen); - break; - } - } - ret = 1; -err: - EVP_PKEY_free(mac_key); - EVP_MD_CTX_cleanup(&ctx); - EVP_MD_CTX_cleanup(&ctx_tmp); - OPENSSL_cleanse(A1,sizeof(A1)); - return ret; - } + int sec_len, + const void *seed1, int seed1_len, + const void *seed2, int seed2_len, + const void *seed3, int seed3_len, + const void *seed4, int seed4_len, + const void *seed5, int seed5_len, + unsigned char *out, int olen) +{ + int chunk; + size_t j; + EVP_MD_CTX ctx, ctx_tmp; + EVP_PKEY *mac_key; + unsigned char A1[EVP_MAX_MD_SIZE]; + size_t A1_len; + int ret = 0; + + chunk = EVP_MD_size(md); + OPENSSL_assert(chunk >= 0); + + EVP_MD_CTX_init(&ctx); + EVP_MD_CTX_init(&ctx_tmp); + EVP_MD_CTX_set_flags(&ctx, EVP_MD_CTX_FLAG_NON_FIPS_ALLOW); + EVP_MD_CTX_set_flags(&ctx_tmp, EVP_MD_CTX_FLAG_NON_FIPS_ALLOW); + mac_key = EVP_PKEY_new_mac_key(EVP_PKEY_HMAC, NULL, sec, sec_len); + if (!mac_key) + goto err; + if (!EVP_DigestSignInit(&ctx, NULL, md, NULL, mac_key)) + goto err; + if (!EVP_DigestSignInit(&ctx_tmp, NULL, md, NULL, mac_key)) + goto err; + if (seed1 && !EVP_DigestSignUpdate(&ctx, seed1, seed1_len)) + goto err; + if (seed2 && !EVP_DigestSignUpdate(&ctx, seed2, seed2_len)) + goto err; + if (seed3 && !EVP_DigestSignUpdate(&ctx, seed3, seed3_len)) + goto err; + if (seed4 && !EVP_DigestSignUpdate(&ctx, seed4, seed4_len)) + goto err; + if (seed5 && !EVP_DigestSignUpdate(&ctx, seed5, seed5_len)) + goto err; + if (!EVP_DigestSignFinal(&ctx, A1, &A1_len)) + goto err; + + for (;;) { + /* Reinit mac contexts */ + if (!EVP_DigestSignInit(&ctx, NULL, md, NULL, mac_key)) + goto err; + if (!EVP_DigestSignInit(&ctx_tmp, NULL, md, NULL, mac_key)) + goto err; + if (!EVP_DigestSignUpdate(&ctx, A1, A1_len)) + goto err; + if (!EVP_DigestSignUpdate(&ctx_tmp, A1, A1_len)) + goto err; + if (seed1 && !EVP_DigestSignUpdate(&ctx, seed1, seed1_len)) + goto err; + if (seed2 && !EVP_DigestSignUpdate(&ctx, seed2, seed2_len)) + goto err; + if (seed3 && !EVP_DigestSignUpdate(&ctx, seed3, seed3_len)) + goto err; + if (seed4 && !EVP_DigestSignUpdate(&ctx, seed4, seed4_len)) + goto err; + if (seed5 && !EVP_DigestSignUpdate(&ctx, seed5, seed5_len)) + goto err; + + if (olen > chunk) { + if (!EVP_DigestSignFinal(&ctx, out, &j)) + goto err; + out += j; + olen -= j; + /* calc the next A1 value */ + if (!EVP_DigestSignFinal(&ctx_tmp, A1, &A1_len)) + goto err; + } else { /* last one */ + + if (!EVP_DigestSignFinal(&ctx, A1, &A1_len)) + goto err; + memcpy(out, A1, olen); + break; + } + } + ret = 1; + err: + EVP_PKEY_free(mac_key); + EVP_MD_CTX_cleanup(&ctx); + EVP_MD_CTX_cleanup(&ctx_tmp); + OPENSSL_cleanse(A1, sizeof(A1)); + return ret; +} /* seed1 through seed5 are virtually concatenated */ static int tls1_PRF(long digest_mask, - const void *seed1, int seed1_len, - const void *seed2, int seed2_len, - const void *seed3, int seed3_len, - const void *seed4, int seed4_len, - const void *seed5, int seed5_len, - const unsigned char *sec, int slen, - unsigned char *out1, - unsigned char *out2, int olen) - { - int len,i,idx,count; - const unsigned char *S1; - long m; - const EVP_MD *md; - int ret = 0; - - /* Count number of digests and partition sec evenly */ - count=0; - for (idx=0;ssl_get_handshake_digest(idx,&m,&md);idx++) { - if ((m<<TLS1_PRF_DGST_SHIFT) & digest_mask) count++; - } - len=slen/count; - if (count == 1) - slen = 0; - S1=sec; - memset(out1,0,olen); - for (idx=0;ssl_get_handshake_digest(idx,&m,&md);idx++) { - if ((m<<TLS1_PRF_DGST_SHIFT) & digest_mask) { - if (!md) { - SSLerr(SSL_F_TLS1_PRF, - SSL_R_UNSUPPORTED_DIGEST_TYPE); - goto err; - } - if (!tls1_P_hash(md ,S1,len+(slen&1), - seed1,seed1_len,seed2,seed2_len,seed3,seed3_len,seed4,seed4_len,seed5,seed5_len, - out2,olen)) - goto err; - S1+=len; - for (i=0; i<olen; i++) - { - out1[i]^=out2[i]; - } - } - } - ret = 1; -err: - return ret; + const void *seed1, int seed1_len, + const void *seed2, int seed2_len, + const void *seed3, int seed3_len, + const void *seed4, int seed4_len, + const void *seed5, int seed5_len, + const unsigned char *sec, int slen, + unsigned char *out1, unsigned char *out2, int olen) +{ + int len, i, idx, count; + const unsigned char *S1; + long m; + const EVP_MD *md; + int ret = 0; + + /* Count number of digests and partition sec evenly */ + count = 0; + for (idx = 0; ssl_get_handshake_digest(idx, &m, &md); idx++) { + if ((m << TLS1_PRF_DGST_SHIFT) & digest_mask) + count++; + } + if(!count) { + /* Should never happen */ + SSLerr(SSL_F_TLS1_PRF, ERR_R_INTERNAL_ERROR); + goto err; + } + len = slen / count; + if (count == 1) + slen = 0; + S1 = sec; + memset(out1, 0, olen); + for (idx = 0; ssl_get_handshake_digest(idx, &m, &md); idx++) { + if ((m << TLS1_PRF_DGST_SHIFT) & digest_mask) { + if (!md) { + SSLerr(SSL_F_TLS1_PRF, SSL_R_UNSUPPORTED_DIGEST_TYPE); + goto err; + } + if (!tls1_P_hash(md, S1, len + (slen & 1), + seed1, seed1_len, seed2, seed2_len, seed3, + seed3_len, seed4, seed4_len, seed5, seed5_len, + out2, olen)) + goto err; + S1 += len; + for (i = 0; i < olen; i++) { + out1[i] ^= out2[i]; + } + } + } + ret = 1; + err: + return ret; } + static int tls1_generate_key_block(SSL *s, unsigned char *km, - unsigned char *tmp, int num) - { - int ret; - ret = tls1_PRF(ssl_get_algorithm2(s), - TLS_MD_KEY_EXPANSION_CONST,TLS_MD_KEY_EXPANSION_CONST_SIZE, - s->s3->server_random,SSL3_RANDOM_SIZE, - s->s3->client_random,SSL3_RANDOM_SIZE, - NULL,0,NULL,0, - s->session->master_key,s->session->master_key_length, - km,tmp,num); + unsigned char *tmp, int num) +{ + int ret; + ret = tls1_PRF(ssl_get_algorithm2(s), + TLS_MD_KEY_EXPANSION_CONST, + TLS_MD_KEY_EXPANSION_CONST_SIZE, s->s3->server_random, + SSL3_RANDOM_SIZE, s->s3->client_random, SSL3_RANDOM_SIZE, + NULL, 0, NULL, 0, s->session->master_key, + s->session->master_key_length, km, tmp, num); #ifdef KSSL_DEBUG - fprintf(stderr,"tls1_generate_key_block() ==> %d byte master_key =\n\t", - s->session->master_key_length); - { + fprintf(stderr, "tls1_generate_key_block() ==> %d byte master_key =\n\t", + s->session->master_key_length); + { int i; - for (i=0; i < s->session->master_key_length; i++) - { - fprintf(stderr,"%02X", s->session->master_key[i]); - } - fprintf(stderr,"\n"); } -#endif /* KSSL_DEBUG */ - return ret; - } + for (i = 0; i < s->session->master_key_length; i++) { + fprintf(stderr, "%02X", s->session->master_key[i]); + } + fprintf(stderr, "\n"); + } +#endif /* KSSL_DEBUG */ + return ret; +} int tls1_change_cipher_state(SSL *s, int which) - { - static const unsigned char empty[]=""; - unsigned char *p,*mac_secret; - unsigned char *exp_label; - unsigned char tmp1[EVP_MAX_KEY_LENGTH]; - unsigned char tmp2[EVP_MAX_KEY_LENGTH]; - unsigned char iv1[EVP_MAX_IV_LENGTH*2]; - unsigned char iv2[EVP_MAX_IV_LENGTH*2]; - unsigned char *ms,*key,*iv; - int client_write; - EVP_CIPHER_CTX *dd; - const EVP_CIPHER *c; +{ + static const unsigned char empty[] = ""; + unsigned char *p, *mac_secret; + unsigned char *exp_label; + unsigned char tmp1[EVP_MAX_KEY_LENGTH]; + unsigned char tmp2[EVP_MAX_KEY_LENGTH]; + unsigned char iv1[EVP_MAX_IV_LENGTH * 2]; + unsigned char iv2[EVP_MAX_IV_LENGTH * 2]; + unsigned char *ms, *key, *iv; + int client_write; + EVP_CIPHER_CTX *dd; + const EVP_CIPHER *c; #ifndef OPENSSL_NO_COMP - const SSL_COMP *comp; + const SSL_COMP *comp; #endif - const EVP_MD *m; - int mac_type; - int *mac_secret_size; - EVP_MD_CTX *mac_ctx; - EVP_PKEY *mac_key; - int is_export,n,i,j,k,exp_label_len,cl; - int reuse_dd = 0; - - is_export=SSL_C_IS_EXPORT(s->s3->tmp.new_cipher); - c=s->s3->tmp.new_sym_enc; - m=s->s3->tmp.new_hash; - mac_type = s->s3->tmp.new_mac_pkey_type; + const EVP_MD *m; + int mac_type; + int *mac_secret_size; + EVP_MD_CTX *mac_ctx; + EVP_PKEY *mac_key; + int is_export, n, i, j, k, exp_label_len, cl; + int reuse_dd = 0; + + is_export = SSL_C_IS_EXPORT(s->s3->tmp.new_cipher); + c = s->s3->tmp.new_sym_enc; + m = s->s3->tmp.new_hash; + mac_type = s->s3->tmp.new_mac_pkey_type; #ifndef OPENSSL_NO_COMP - comp=s->s3->tmp.new_compression; + comp = s->s3->tmp.new_compression; #endif #ifdef KSSL_DEBUG - fprintf(stderr,"tls1_change_cipher_state(which= %d) w/\n", which); - fprintf(stderr,"\talg= %ld/%ld, comp= %p\n", - s->s3->tmp.new_cipher->algorithm_mkey, - s->s3->tmp.new_cipher->algorithm_auth, - comp); - fprintf(stderr,"\tevp_cipher == %p ==? &d_cbc_ede_cipher3\n", c); - fprintf(stderr,"\tevp_cipher: nid, blksz= %d, %d, keylen=%d, ivlen=%d\n", - c->nid,c->block_size,c->key_len,c->iv_len); - fprintf(stderr,"\tkey_block: len= %d, data= ", s->s3->tmp.key_block_length); - { + fprintf(stderr, "tls1_change_cipher_state(which= %d) w/\n", which); + fprintf(stderr, "\talg= %ld/%ld, comp= %p\n", + s->s3->tmp.new_cipher->algorithm_mkey, + s->s3->tmp.new_cipher->algorithm_auth, comp); + fprintf(stderr, "\tevp_cipher == %p ==? &d_cbc_ede_cipher3\n", c); + fprintf(stderr, "\tevp_cipher: nid, blksz= %d, %d, keylen=%d, ivlen=%d\n", + c->nid, c->block_size, c->key_len, c->iv_len); + fprintf(stderr, "\tkey_block: len= %d, data= ", + s->s3->tmp.key_block_length); + { int i; - for (i=0; i<s->s3->tmp.key_block_length; i++) - fprintf(stderr,"%02x", s->s3->tmp.key_block[i]); fprintf(stderr,"\n"); - } -#endif /* KSSL_DEBUG */ - - if (which & SSL3_CC_READ) - { - if (s->s3->tmp.new_cipher->algorithm2 & TLS1_STREAM_MAC) - s->mac_flags |= SSL_MAC_FLAG_READ_MAC_STREAM; - else - s->mac_flags &= ~SSL_MAC_FLAG_READ_MAC_STREAM; - - 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; - mac_ctx=ssl_replace_hash(&s->read_hash,NULL); + for (i = 0; i < s->s3->tmp.key_block_length; i++) + fprintf(stderr, "%02x", s->s3->tmp.key_block[i]); + fprintf(stderr, "\n"); + } +#endif /* KSSL_DEBUG */ + + if (which & SSL3_CC_READ) { + if (s->s3->tmp.new_cipher->algorithm2 & TLS1_STREAM_MAC) + s->mac_flags |= SSL_MAC_FLAG_READ_MAC_STREAM; + else + s->mac_flags &= ~SSL_MAC_FLAG_READ_MAC_STREAM; + + 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; + mac_ctx = ssl_replace_hash(&s->read_hash, NULL); #ifndef OPENSSL_NO_COMP - if (s->expand != NULL) - { - COMP_CTX_free(s->expand); - s->expand=NULL; - } - if (comp != NULL) - { - s->expand=COMP_CTX_new(comp->method); - if (s->expand == NULL) - { - SSLerr(SSL_F_TLS1_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_ENCRYPTED_LENGTH); - if (s->s3->rrec.comp == NULL) - goto err; - } + if (s->expand != NULL) { + COMP_CTX_free(s->expand); + s->expand = NULL; + } + if (comp != NULL) { + s->expand = COMP_CTX_new(comp->method); + if (s->expand == NULL) { + SSLerr(SSL_F_TLS1_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_ENCRYPTED_LENGTH); + if (s->s3->rrec.comp == NULL) + goto err; + } #endif - /* this is done by dtls1_reset_seq_numbers for DTLS1_VERSION */ - if (s->version != DTLS1_VERSION) - memset(&(s->s3->read_sequence[0]),0,8); - mac_secret= &(s->s3->read_mac_secret[0]); - mac_secret_size=&(s->s3->read_mac_secret_size); - } - else - { - if (s->s3->tmp.new_cipher->algorithm2 & TLS1_STREAM_MAC) - s->mac_flags |= SSL_MAC_FLAG_WRITE_MAC_STREAM; - else - s->mac_flags &= ~SSL_MAC_FLAG_WRITE_MAC_STREAM; - if (s->enc_write_ctx != NULL && !SSL_IS_DTLS(s)) - reuse_dd = 1; - else if ((s->enc_write_ctx=EVP_CIPHER_CTX_new()) == NULL) - goto err; - dd= s->enc_write_ctx; - if (SSL_IS_DTLS(s)) - { - mac_ctx = EVP_MD_CTX_create(); - if (!mac_ctx) - goto err; - s->write_hash = mac_ctx; - } - else - mac_ctx = ssl_replace_hash(&s->write_hash,NULL); + /* + * this is done by dtls1_reset_seq_numbers for DTLS1_VERSION + */ + if (s->version != DTLS1_VERSION) + memset(&(s->s3->read_sequence[0]), 0, 8); + mac_secret = &(s->s3->read_mac_secret[0]); + mac_secret_size = &(s->s3->read_mac_secret_size); + } else { + if (s->s3->tmp.new_cipher->algorithm2 & TLS1_STREAM_MAC) + s->mac_flags |= SSL_MAC_FLAG_WRITE_MAC_STREAM; + else + s->mac_flags &= ~SSL_MAC_FLAG_WRITE_MAC_STREAM; + if (s->enc_write_ctx != NULL && !SSL_IS_DTLS(s)) + reuse_dd = 1; + else if ((s->enc_write_ctx = EVP_CIPHER_CTX_new()) == NULL) + goto err; + dd = s->enc_write_ctx; + if (SSL_IS_DTLS(s)) { + mac_ctx = EVP_MD_CTX_create(); + if (!mac_ctx) + goto err; + s->write_hash = mac_ctx; + } else + mac_ctx = ssl_replace_hash(&s->write_hash, NULL); #ifndef OPENSSL_NO_COMP - if (s->compress != NULL) - { - COMP_CTX_free(s->compress); - s->compress=NULL; - } - if (comp != NULL) - { - s->compress=COMP_CTX_new(comp->method); - if (s->compress == NULL) - { - SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE,SSL_R_COMPRESSION_LIBRARY_ERROR); - goto err2; - } - } + if (s->compress != NULL) { + COMP_CTX_free(s->compress); + s->compress = NULL; + } + if (comp != NULL) { + s->compress = COMP_CTX_new(comp->method); + if (s->compress == NULL) { + SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE, + SSL_R_COMPRESSION_LIBRARY_ERROR); + goto err2; + } + } #endif - /* this is done by dtls1_reset_seq_numbers for DTLS1_VERSION */ - if (s->version != DTLS1_VERSION) - memset(&(s->s3->write_sequence[0]),0,8); - mac_secret= &(s->s3->write_mac_secret[0]); - mac_secret_size = &(s->s3->write_mac_secret_size); - } - - if (reuse_dd) - EVP_CIPHER_CTX_cleanup(dd); - - p=s->s3->tmp.key_block; - i=*mac_secret_size=s->s3->tmp.new_mac_secret_size; - - cl=EVP_CIPHER_key_length(c); - j=is_export ? (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); */ - /* If GCM mode only part of IV comes from PRF */ - if (EVP_CIPHER_mode(c) == EVP_CIPH_GCM_MODE) - k = EVP_GCM_TLS_FIXED_IV_LEN; - else - 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; - exp_label=(unsigned char *)TLS_MD_CLIENT_WRITE_KEY_CONST; - exp_label_len=TLS_MD_CLIENT_WRITE_KEY_CONST_SIZE; - client_write=1; - } - else - { - n=i; - ms= &(p[ n]); n+=i+j; - key= &(p[ n]); n+=j+k; - iv= &(p[ n]); n+=k; - exp_label=(unsigned char *)TLS_MD_SERVER_WRITE_KEY_CONST; - exp_label_len=TLS_MD_SERVER_WRITE_KEY_CONST_SIZE; - client_write=0; - } - - if (n > s->s3->tmp.key_block_length) - { - SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE,ERR_R_INTERNAL_ERROR); - goto err2; - } - - memcpy(mac_secret,ms,i); - - if (!(EVP_CIPHER_flags(c)&EVP_CIPH_FLAG_AEAD_CIPHER)) - { - mac_key = EVP_PKEY_new_mac_key(mac_type, NULL, - mac_secret,*mac_secret_size); - EVP_DigestSignInit(mac_ctx,NULL,m,NULL,mac_key); - EVP_PKEY_free(mac_key); - } + /* + * this is done by dtls1_reset_seq_numbers for DTLS1_VERSION + */ + if (s->version != DTLS1_VERSION) + memset(&(s->s3->write_sequence[0]), 0, 8); + mac_secret = &(s->s3->write_mac_secret[0]); + mac_secret_size = &(s->s3->write_mac_secret_size); + } + + if (reuse_dd) + EVP_CIPHER_CTX_cleanup(dd); + + p = s->s3->tmp.key_block; + i = *mac_secret_size = s->s3->tmp.new_mac_secret_size; + + cl = EVP_CIPHER_key_length(c); + j = is_export ? (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); */ + /* If GCM mode only part of IV comes from PRF */ + if (EVP_CIPHER_mode(c) == EVP_CIPH_GCM_MODE) + k = EVP_GCM_TLS_FIXED_IV_LEN; + else + 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; + exp_label = (unsigned char *)TLS_MD_CLIENT_WRITE_KEY_CONST; + exp_label_len = TLS_MD_CLIENT_WRITE_KEY_CONST_SIZE; + client_write = 1; + } else { + n = i; + ms = &(p[n]); + n += i + j; + key = &(p[n]); + n += j + k; + iv = &(p[n]); + n += k; + exp_label = (unsigned char *)TLS_MD_SERVER_WRITE_KEY_CONST; + exp_label_len = TLS_MD_SERVER_WRITE_KEY_CONST_SIZE; + client_write = 0; + } + + if (n > s->s3->tmp.key_block_length) { + SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE, ERR_R_INTERNAL_ERROR); + goto err2; + } + + memcpy(mac_secret, ms, i); + + if (!(EVP_CIPHER_flags(c) & EVP_CIPH_FLAG_AEAD_CIPHER)) { + mac_key = EVP_PKEY_new_mac_key(mac_type, NULL, + mac_secret, *mac_secret_size); + EVP_DigestSignInit(mac_ctx, NULL, m, NULL, mac_key); + EVP_PKEY_free(mac_key); + } #ifdef TLS_DEBUG -printf("which = %04X\nmac key=",which); -{ int z; for (z=0; z<i; z++) printf("%02X%c",ms[z],((z+1)%16)?' ':'\n'); } + printf("which = %04X\nmac key=", which); + { + int z; + for (z = 0; z < i; z++) + printf("%02X%c", ms[z], ((z + 1) % 16) ? ' ' : '\n'); + } #endif - if (is_export) - { - /* In here I set both the read and write key/iv to the - * same value since only the correct one will be used :-). - */ - if (!tls1_PRF(ssl_get_algorithm2(s), - exp_label,exp_label_len, - s->s3->client_random,SSL3_RANDOM_SIZE, - s->s3->server_random,SSL3_RANDOM_SIZE, - NULL,0,NULL,0, - key,j,tmp1,tmp2,EVP_CIPHER_key_length(c))) - goto err2; - key=tmp1; - - if (k > 0) - { - if (!tls1_PRF(ssl_get_algorithm2(s), - TLS_MD_IV_BLOCK_CONST,TLS_MD_IV_BLOCK_CONST_SIZE, - s->s3->client_random,SSL3_RANDOM_SIZE, - s->s3->server_random,SSL3_RANDOM_SIZE, - NULL,0,NULL,0, - empty,0,iv1,iv2,k*2)) - goto err2; - if (client_write) - iv=iv1; - else - iv= &(iv1[k]); - } - } - - s->session->key_arg_length=0; + if (is_export) { + /* + * In here I set both the read and write key/iv to the same value + * since only the correct one will be used :-). + */ + if (!tls1_PRF(ssl_get_algorithm2(s), + exp_label, exp_label_len, + s->s3->client_random, SSL3_RANDOM_SIZE, + s->s3->server_random, SSL3_RANDOM_SIZE, + NULL, 0, NULL, 0, + key, j, tmp1, tmp2, EVP_CIPHER_key_length(c))) + goto err2; + key = tmp1; + + if (k > 0) { + if (!tls1_PRF(ssl_get_algorithm2(s), + TLS_MD_IV_BLOCK_CONST, TLS_MD_IV_BLOCK_CONST_SIZE, + s->s3->client_random, SSL3_RANDOM_SIZE, + s->s3->server_random, SSL3_RANDOM_SIZE, + NULL, 0, NULL, 0, empty, 0, iv1, iv2, k * 2)) + goto err2; + if (client_write) + iv = iv1; + else + iv = &(iv1[k]); + } + } + + s->session->key_arg_length = 0; #ifdef KSSL_DEBUG - { + { int i; - fprintf(stderr,"EVP_CipherInit_ex(dd,c,key=,iv=,which)\n"); - fprintf(stderr,"\tkey= "); for (i=0; i<c->key_len; i++) fprintf(stderr,"%02x", key[i]); - fprintf(stderr,"\n"); - fprintf(stderr,"\t iv= "); for (i=0; i<c->iv_len; i++) fprintf(stderr,"%02x", iv[i]); - fprintf(stderr,"\n"); - } -#endif /* KSSL_DEBUG */ - - if (EVP_CIPHER_mode(c) == EVP_CIPH_GCM_MODE) - { - EVP_CipherInit_ex(dd,c,NULL,key,NULL,(which & SSL3_CC_WRITE)); - EVP_CIPHER_CTX_ctrl(dd, EVP_CTRL_GCM_SET_IV_FIXED, k, iv); - } - else - EVP_CipherInit_ex(dd,c,NULL,key,iv,(which & SSL3_CC_WRITE)); - - /* Needed for "composite" AEADs, such as RC4-HMAC-MD5 */ - if ((EVP_CIPHER_flags(c)&EVP_CIPH_FLAG_AEAD_CIPHER) && *mac_secret_size) - EVP_CIPHER_CTX_ctrl(dd,EVP_CTRL_AEAD_SET_MAC_KEY, - *mac_secret_size,mac_secret); + fprintf(stderr, "EVP_CipherInit_ex(dd,c,key=,iv=,which)\n"); + fprintf(stderr, "\tkey= "); + for (i = 0; i < c->key_len; i++) + fprintf(stderr, "%02x", key[i]); + fprintf(stderr, "\n"); + fprintf(stderr, "\t iv= "); + for (i = 0; i < c->iv_len; i++) + fprintf(stderr, "%02x", iv[i]); + fprintf(stderr, "\n"); + } +#endif /* KSSL_DEBUG */ + + if (EVP_CIPHER_mode(c) == EVP_CIPH_GCM_MODE) { + if (!EVP_CipherInit_ex(dd, c, NULL, key, NULL, (which & SSL3_CC_WRITE)) + || !EVP_CIPHER_CTX_ctrl(dd, EVP_CTRL_GCM_SET_IV_FIXED, k, iv)) { + SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE, ERR_R_INTERNAL_ERROR); + goto err2; + } + } else { + if (!EVP_CipherInit_ex(dd, c, NULL, key, iv, (which & SSL3_CC_WRITE))) { + SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE, ERR_R_INTERNAL_ERROR); + goto err2; + } + } + /* Needed for "composite" AEADs, such as RC4-HMAC-MD5 */ + if ((EVP_CIPHER_flags(c) & EVP_CIPH_FLAG_AEAD_CIPHER) && *mac_secret_size + && !EVP_CIPHER_CTX_ctrl(dd, EVP_CTRL_AEAD_SET_MAC_KEY, + *mac_secret_size, mac_secret)) { + SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE, ERR_R_INTERNAL_ERROR); + goto err2; + } #ifdef TLS_DEBUG -printf("which = %04X\nkey=",which); -{ int z; for (z=0; z<EVP_CIPHER_key_length(c); z++) printf("%02X%c",key[z],((z+1)%16)?' ':'\n'); } -printf("\niv="); -{ int z; for (z=0; z<k; z++) printf("%02X%c",iv[z],((z+1)%16)?' ':'\n'); } -printf("\n"); + printf("which = %04X\nkey=", which); + { + int z; + for (z = 0; z < EVP_CIPHER_key_length(c); z++) + printf("%02X%c", key[z], ((z + 1) % 16) ? ' ' : '\n'); + } + printf("\niv="); + { + int z; + for (z = 0; z < k; z++) + printf("%02X%c", iv[z], ((z + 1) % 16) ? ' ' : '\n'); + } + printf("\n"); #endif - OPENSSL_cleanse(tmp1,sizeof(tmp1)); - OPENSSL_cleanse(tmp2,sizeof(tmp1)); - OPENSSL_cleanse(iv1,sizeof(iv1)); - OPENSSL_cleanse(iv2,sizeof(iv2)); - return(1); -err: - SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE,ERR_R_MALLOC_FAILURE); -err2: - return(0); - } + OPENSSL_cleanse(tmp1, sizeof(tmp1)); + OPENSSL_cleanse(tmp2, sizeof(tmp1)); + OPENSSL_cleanse(iv1, sizeof(iv1)); + OPENSSL_cleanse(iv2, sizeof(iv2)); + return (1); + err: + SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE, ERR_R_MALLOC_FAILURE); + err2: + return (0); +} int tls1_setup_key_block(SSL *s) - { - unsigned char *p1,*p2=NULL; - const EVP_CIPHER *c; - const EVP_MD *hash; - int num; - SSL_COMP *comp; - int mac_type= NID_undef,mac_secret_size=0; - int ret=0; +{ + unsigned char *p1, *p2 = NULL; + const EVP_CIPHER *c; + const EVP_MD *hash; + int num; + SSL_COMP *comp; + int mac_type = NID_undef, mac_secret_size = 0; + int ret = 0; #ifdef KSSL_DEBUG - fprintf(stderr,"tls1_setup_key_block()\n"); -#endif /* KSSL_DEBUG */ - - if (s->s3->tmp.key_block_length != 0) - return(1); - - if (!ssl_cipher_get_evp(s->session,&c,&hash,&mac_type,&mac_secret_size,&comp)) - { - SSLerr(SSL_F_TLS1_SETUP_KEY_BLOCK,SSL_R_CIPHER_OR_HASH_UNAVAILABLE); - return(0); - } - - s->s3->tmp.new_sym_enc=c; - s->s3->tmp.new_hash=hash; - s->s3->tmp.new_mac_pkey_type = mac_type; - s->s3->tmp.new_mac_secret_size = mac_secret_size; - num=EVP_CIPHER_key_length(c)+mac_secret_size+EVP_CIPHER_iv_length(c); - num*=2; - - ssl3_cleanup_key_block(s); - - if ((p1=(unsigned char *)OPENSSL_malloc(num)) == NULL) - { - SSLerr(SSL_F_TLS1_SETUP_KEY_BLOCK,ERR_R_MALLOC_FAILURE); - goto err; - } - - s->s3->tmp.key_block_length=num; - s->s3->tmp.key_block=p1; - - if ((p2=(unsigned char *)OPENSSL_malloc(num)) == NULL) - { - SSLerr(SSL_F_TLS1_SETUP_KEY_BLOCK,ERR_R_MALLOC_FAILURE); - goto err; - } - + fprintf(stderr, "tls1_setup_key_block()\n"); +#endif /* KSSL_DEBUG */ + + if (s->s3->tmp.key_block_length != 0) + return (1); + + if (!ssl_cipher_get_evp + (s->session, &c, &hash, &mac_type, &mac_secret_size, &comp)) { + SSLerr(SSL_F_TLS1_SETUP_KEY_BLOCK, SSL_R_CIPHER_OR_HASH_UNAVAILABLE); + return (0); + } + + s->s3->tmp.new_sym_enc = c; + s->s3->tmp.new_hash = hash; + s->s3->tmp.new_mac_pkey_type = mac_type; + s->s3->tmp.new_mac_secret_size = mac_secret_size; + num = + EVP_CIPHER_key_length(c) + mac_secret_size + EVP_CIPHER_iv_length(c); + num *= 2; + + ssl3_cleanup_key_block(s); + + if ((p1 = (unsigned char *)OPENSSL_malloc(num)) == NULL) { + SSLerr(SSL_F_TLS1_SETUP_KEY_BLOCK, ERR_R_MALLOC_FAILURE); + goto err; + } + + s->s3->tmp.key_block_length = num; + s->s3->tmp.key_block = p1; + + if ((p2 = (unsigned char *)OPENSSL_malloc(num)) == NULL) { + SSLerr(SSL_F_TLS1_SETUP_KEY_BLOCK, ERR_R_MALLOC_FAILURE); + OPENSSL_free(p1); + goto err; + } #ifdef TLS_DEBUG -printf("client random\n"); -{ int z; for (z=0; z<SSL3_RANDOM_SIZE; z++) printf("%02X%c",s->s3->client_random[z],((z+1)%16)?' ':'\n'); } -printf("server random\n"); -{ int z; for (z=0; z<SSL3_RANDOM_SIZE; z++) printf("%02X%c",s->s3->server_random[z],((z+1)%16)?' ':'\n'); } -printf("pre-master\n"); -{ int z; for (z=0; z<s->session->master_key_length; z++) printf("%02X%c",s->session->master_key[z],((z+1)%16)?' ':'\n'); } + printf("client random\n"); + { + int z; + for (z = 0; z < SSL3_RANDOM_SIZE; z++) + printf("%02X%c", s->s3->client_random[z], + ((z + 1) % 16) ? ' ' : '\n'); + } + printf("server random\n"); + { + int z; + for (z = 0; z < SSL3_RANDOM_SIZE; z++) + printf("%02X%c", s->s3->server_random[z], + ((z + 1) % 16) ? ' ' : '\n'); + } + printf("pre-master\n"); + { + int z; + for (z = 0; z < s->session->master_key_length; z++) + printf("%02X%c", s->session->master_key[z], + ((z + 1) % 16) ? ' ' : '\n'); + } #endif - if (!tls1_generate_key_block(s,p1,p2,num)) - goto err; + if (!tls1_generate_key_block(s, p1, p2, num)) + goto err; #ifdef TLS_DEBUG -printf("\nkey block\n"); -{ int z; for (z=0; z<num; z++) printf("%02X%c",p1[z],((z+1)%16)?' ':'\n'); } + printf("\nkey block\n"); + { + int z; + for (z = 0; z < num; z++) + printf("%02X%c", p1[z], ((z + 1) % 16) ? ' ' : '\n'); + } #endif - if (!(s->options & SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS) - && s->method->version <= TLS1_VERSION) - { - /* 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->options & SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS) + && s->method->version <= TLS1_VERSION) { + /* + * 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; + if (s->session->cipher->algorithm_enc == SSL_RC4) + s->s3->need_empty_fragments = 0; #endif - } - } - - ret = 1; -err: - if (p2) - { - OPENSSL_cleanse(p2,num); - OPENSSL_free(p2); - } - return(ret); - } - -/* tls1_enc encrypts/decrypts the record in |s->wrec| / |s->rrec|, respectively. + } + } + + ret = 1; + err: + if (p2) { + OPENSSL_cleanse(p2, num); + OPENSSL_free(p2); + } + return (ret); +} + +/*- + * tls1_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 @@ -682,570 +721,602 @@ err: * an internal error occured. */ int tls1_enc(SSL *s, int send) - { - SSL3_RECORD *rec; - EVP_CIPHER_CTX *ds; - unsigned long l; - int bs,i,j,k,pad=0,ret,mac_size=0; - const EVP_CIPHER *enc; - - if (send) - { - if (EVP_MD_CTX_md(s->write_hash)) - { - int n=EVP_MD_CTX_size(s->write_hash); - OPENSSL_assert(n >= 0); - } - ds=s->enc_write_ctx; - rec= &(s->s3->wrec); - if (s->enc_write_ctx == NULL) - enc=NULL; - else - { - int ivlen; - enc=EVP_CIPHER_CTX_cipher(s->enc_write_ctx); - /* For TLSv1.1 and later explicit IV */ - if (s->version >= TLS1_1_VERSION - && EVP_CIPHER_mode(enc) == EVP_CIPH_CBC_MODE) - ivlen = EVP_CIPHER_iv_length(enc); - else - ivlen = 0; - if (ivlen > 1) - { - if ( rec->data != rec->input) - /* we can't write into the input stream: - * Can this ever happen?? (steve) - */ - fprintf(stderr, - "%s:%d: rec->data != rec->input\n", - __FILE__, __LINE__); - else if (RAND_bytes(rec->input, ivlen) <= 0) - return -1; - } - } - } - else - { - if (EVP_MD_CTX_md(s->read_hash)) - { - int n=EVP_MD_CTX_size(s->read_hash); - OPENSSL_assert(n >= 0); - } - 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); - } +{ + SSL3_RECORD *rec; + EVP_CIPHER_CTX *ds; + unsigned long l; + int bs, i, j, k, pad = 0, ret, mac_size = 0; + const EVP_CIPHER *enc; + + if (send) { + if (EVP_MD_CTX_md(s->write_hash)) { + int n = EVP_MD_CTX_size(s->write_hash); + OPENSSL_assert(n >= 0); + } + ds = s->enc_write_ctx; + rec = &(s->s3->wrec); + if (s->enc_write_ctx == NULL) + enc = NULL; + else { + int ivlen; + enc = EVP_CIPHER_CTX_cipher(s->enc_write_ctx); + /* For TLSv1.1 and later explicit IV */ + if (s->version >= TLS1_1_VERSION + && EVP_CIPHER_mode(enc) == EVP_CIPH_CBC_MODE) + ivlen = EVP_CIPHER_iv_length(enc); + else + ivlen = 0; + if (ivlen > 1) { + if (rec->data != rec->input) + /* + * we can't write into the input stream: Can this ever + * happen?? (steve) + */ + fprintf(stderr, + "%s:%d: rec->data != rec->input\n", + __FILE__, __LINE__); + else if (RAND_bytes(rec->input, ivlen) <= 0) + return -1; + } + } + } else { + if (EVP_MD_CTX_md(s->read_hash)) { + int n = EVP_MD_CTX_size(s->read_hash); + OPENSSL_assert(n >= 0); + } + 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); + } #ifdef KSSL_DEBUG - fprintf(stderr,"tls1_enc(%d)\n", send); -#endif /* KSSL_DEBUG */ - - if ((s->session == NULL) || (ds == NULL) || (enc == NULL)) - { - memmove(rec->data,rec->input,rec->length); - rec->input=rec->data; - ret = 1; - } - else - { - l=rec->length; - bs=EVP_CIPHER_block_size(ds->cipher); - - if (EVP_CIPHER_flags(ds->cipher)&EVP_CIPH_FLAG_AEAD_CIPHER) - { - unsigned char buf[13],*seq; - - seq = send?s->s3->write_sequence:s->s3->read_sequence; - - if (s->version == DTLS1_VERSION || s->version == DTLS1_BAD_VER) - { - unsigned char dtlsseq[9],*p=dtlsseq; - - s2n(send?s->d1->w_epoch:s->d1->r_epoch,p); - memcpy(p,&seq[2],6); - memcpy(buf,dtlsseq,8); - } - else - { - memcpy(buf,seq,8); - for (i=7; i>=0; i--) /* increment */ - { - ++seq[i]; - if (seq[i] != 0) break; - } - } - - buf[8]=rec->type; - buf[9]=(unsigned char)(s->version>>8); - buf[10]=(unsigned char)(s->version); - buf[11]=rec->length>>8; - buf[12]=rec->length&0xff; - pad=EVP_CIPHER_CTX_ctrl(ds,EVP_CTRL_AEAD_TLS1_AAD,13,buf); - if (send) - { - l+=pad; - rec->length+=pad; - } - } - else if ((bs != 1) && send) - { - i=bs-((int)l%bs); - - /* Add weird padding of upto 256 bytes */ - - /* we need to add 'i' padding bytes of value j */ - j=i-1; - if (s->options & SSL_OP_TLS_BLOCK_PADDING_BUG) - { - if (s->s3->flags & TLS1_FLAGS_TLS_PADDING_BUG) - j++; - } - for (k=(int)l; k<(int)(l+i); k++) - rec->input[k]=j; - l+=i; - rec->length+=i; - } - + fprintf(stderr, "tls1_enc(%d)\n", send); +#endif /* KSSL_DEBUG */ + + if ((s->session == NULL) || (ds == NULL) || (enc == NULL)) { + memmove(rec->data, rec->input, rec->length); + rec->input = rec->data; + ret = 1; + } else { + l = rec->length; + bs = EVP_CIPHER_block_size(ds->cipher); + + if (EVP_CIPHER_flags(ds->cipher) & EVP_CIPH_FLAG_AEAD_CIPHER) { + unsigned char buf[13], *seq; + + seq = send ? s->s3->write_sequence : s->s3->read_sequence; + + if (s->version == DTLS1_VERSION || s->version == DTLS1_BAD_VER) { + unsigned char dtlsseq[9], *p = dtlsseq; + + s2n(send ? s->d1->w_epoch : s->d1->r_epoch, p); + memcpy(p, &seq[2], 6); + memcpy(buf, dtlsseq, 8); + } else { + memcpy(buf, seq, 8); + for (i = 7; i >= 0; i--) { /* increment */ + ++seq[i]; + if (seq[i] != 0) + break; + } + } + + buf[8] = rec->type; + buf[9] = (unsigned char)(s->version >> 8); + buf[10] = (unsigned char)(s->version); + buf[11] = rec->length >> 8; + buf[12] = rec->length & 0xff; + pad = EVP_CIPHER_CTX_ctrl(ds, EVP_CTRL_AEAD_TLS1_AAD, 13, buf); + if (send) { + l += pad; + rec->length += pad; + } + } else if ((bs != 1) && send) { + i = bs - ((int)l % bs); + + /* Add weird padding of upto 256 bytes */ + + /* we need to add 'i' padding bytes of value j */ + j = i - 1; + if (s->options & SSL_OP_TLS_BLOCK_PADDING_BUG) { + if (s->s3->flags & TLS1_FLAGS_TLS_PADDING_BUG) + j++; + } + for (k = (int)l; k < (int)(l + i); k++) + rec->input[k] = j; + l += i; + rec->length += i; + } #ifdef KSSL_DEBUG - { - unsigned long ui; - fprintf(stderr,"EVP_Cipher(ds=%p,rec->data=%p,rec->input=%p,l=%ld) ==>\n", - ds,rec->data,rec->input,l); - fprintf(stderr,"\tEVP_CIPHER_CTX: %d buf_len, %d key_len [%lu %lu], %d iv_len\n", - ds->buf_len, ds->cipher->key_len, - DES_KEY_SZ, DES_SCHEDULE_SZ, - ds->cipher->iv_len); - fprintf(stderr,"\t\tIV: "); - for (i=0; i<ds->cipher->iv_len; i++) fprintf(stderr,"%02X", ds->iv[i]); - fprintf(stderr,"\n"); - fprintf(stderr,"\trec->input="); - for (ui=0; ui<l; ui++) fprintf(stderr," %02x", rec->input[ui]); - fprintf(stderr,"\n"); - } -#endif /* KSSL_DEBUG */ - - if (!send) - { - if (l == 0 || l%bs != 0) - return 0; - } - - i = EVP_Cipher(ds,rec->data,rec->input,l); - if ((EVP_CIPHER_flags(ds->cipher)&EVP_CIPH_FLAG_CUSTOM_CIPHER) - ?(i<0) - :(i==0)) - return -1; /* AEAD can fail to verify MAC */ - if (EVP_CIPHER_mode(enc) == EVP_CIPH_GCM_MODE && !send) - { - rec->data += EVP_GCM_TLS_EXPLICIT_IV_LEN; - rec->input += EVP_GCM_TLS_EXPLICIT_IV_LEN; - rec->length -= EVP_GCM_TLS_EXPLICIT_IV_LEN; - } + { + unsigned long ui; + fprintf(stderr, + "EVP_Cipher(ds=%p,rec->data=%p,rec->input=%p,l=%ld) ==>\n", + ds, rec->data, rec->input, l); + fprintf(stderr, + "\tEVP_CIPHER_CTX: %d buf_len, %d key_len [%lu %lu], %d iv_len\n", + ds->buf_len, ds->cipher->key_len, DES_KEY_SZ, + DES_SCHEDULE_SZ, ds->cipher->iv_len); + fprintf(stderr, "\t\tIV: "); + for (i = 0; i < ds->cipher->iv_len; i++) + fprintf(stderr, "%02X", ds->iv[i]); + fprintf(stderr, "\n"); + fprintf(stderr, "\trec->input="); + for (ui = 0; ui < l; ui++) + fprintf(stderr, " %02x", rec->input[ui]); + fprintf(stderr, "\n"); + } +#endif /* KSSL_DEBUG */ + + if (!send) { + if (l == 0 || l % bs != 0) + return 0; + } + i = EVP_Cipher(ds, rec->data, rec->input, l); + if ((EVP_CIPHER_flags(ds->cipher) & EVP_CIPH_FLAG_CUSTOM_CIPHER) + ? (i < 0) + : (i == 0)) + return -1; /* AEAD can fail to verify MAC */ + if (EVP_CIPHER_mode(enc) == EVP_CIPH_GCM_MODE && !send) { + rec->data += EVP_GCM_TLS_EXPLICIT_IV_LEN; + rec->input += EVP_GCM_TLS_EXPLICIT_IV_LEN; + rec->length -= EVP_GCM_TLS_EXPLICIT_IV_LEN; + } #ifdef KSSL_DEBUG - { - unsigned long i; - fprintf(stderr,"\trec->data="); - for (i=0; i<l; i++) - fprintf(stderr," %02x", rec->data[i]); fprintf(stderr,"\n"); - } -#endif /* KSSL_DEBUG */ - - ret = 1; - if (EVP_MD_CTX_md(s->read_hash) != NULL) - mac_size = EVP_MD_CTX_size(s->read_hash); - if ((bs != 1) && !send) - ret = tls1_cbc_remove_padding(s, rec, bs, mac_size); - if (pad && !send) - rec->length -= pad; - } - return ret; - } + { + unsigned long i; + fprintf(stderr, "\trec->data="); + for (i = 0; i < l; i++) + fprintf(stderr, " %02x", rec->data[i]); + fprintf(stderr, "\n"); + } +#endif /* KSSL_DEBUG */ + + ret = 1; + if (EVP_MD_CTX_md(s->read_hash) != NULL) + mac_size = EVP_MD_CTX_size(s->read_hash); + if ((bs != 1) && !send) + ret = tls1_cbc_remove_padding(s, rec, bs, mac_size); + if (pad && !send) + rec->length -= pad; + } + return ret; +} int tls1_cert_verify_mac(SSL *s, int md_nid, unsigned char *out) - { - unsigned int ret; - EVP_MD_CTX ctx, *d=NULL; - int i; - - if (s->s3->handshake_buffer) - if (!ssl3_digest_cached_records(s)) - return 0; - - 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_TLS1_CERT_VERIFY_MAC,SSL_R_NO_REQUIRED_DIGEST); - return 0; - } - - EVP_MD_CTX_init(&ctx); - EVP_MD_CTX_copy_ex(&ctx,d); - EVP_DigestFinal_ex(&ctx,out,&ret); - EVP_MD_CTX_cleanup(&ctx); - return((int)ret); - } +{ + unsigned int ret; + EVP_MD_CTX ctx, *d = NULL; + int i; + + if (s->s3->handshake_buffer) + if (!ssl3_digest_cached_records(s)) + return 0; + + 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_TLS1_CERT_VERIFY_MAC, SSL_R_NO_REQUIRED_DIGEST); + return 0; + } + + EVP_MD_CTX_init(&ctx); + EVP_MD_CTX_copy_ex(&ctx, d); + EVP_DigestFinal_ex(&ctx, out, &ret); + EVP_MD_CTX_cleanup(&ctx); + return ((int)ret); +} int tls1_final_finish_mac(SSL *s, - const char *str, int slen, unsigned char *out) - { - unsigned int i; - EVP_MD_CTX ctx; - unsigned char buf[2*EVP_MAX_MD_SIZE]; - unsigned char *q,buf2[12]; - int idx; - long mask; - int err=0; - const EVP_MD *md; - - q=buf; - - if (s->s3->handshake_buffer) - if (!ssl3_digest_cached_records(s)) - return 0; - - EVP_MD_CTX_init(&ctx); - - for (idx=0;ssl_get_handshake_digest(idx,&mask,&md);idx++) - { - if (mask & ssl_get_algorithm2(s)) - { - int hashsize = EVP_MD_size(md); - EVP_MD_CTX *hdgst = s->s3->handshake_dgst[idx]; - if (!hdgst || hashsize < 0 || hashsize > (int)(sizeof buf - (size_t)(q-buf))) - { - /* internal error: 'buf' is too small for this cipersuite! */ - err = 1; - } - else - { - if (!EVP_MD_CTX_copy_ex(&ctx, hdgst) || - !EVP_DigestFinal_ex(&ctx,q,&i) || - (i != (unsigned int)hashsize)) - err = 1; - q+=hashsize; - } - } - } - - if (!tls1_PRF(ssl_get_algorithm2(s), - str,slen, buf,(int)(q-buf), NULL,0, NULL,0, NULL,0, - s->session->master_key,s->session->master_key_length, - out,buf2,sizeof buf2)) - err = 1; - EVP_MD_CTX_cleanup(&ctx); - - if (err) - return 0; - else - return sizeof buf2; - } + const char *str, int slen, unsigned char *out) +{ + unsigned int i; + EVP_MD_CTX ctx; + unsigned char buf[2 * EVP_MAX_MD_SIZE]; + unsigned char *q, buf2[12]; + int idx; + long mask; + int err = 0; + const EVP_MD *md; + + q = buf; + + if (s->s3->handshake_buffer) + if (!ssl3_digest_cached_records(s)) + return 0; + + EVP_MD_CTX_init(&ctx); + + for (idx = 0; ssl_get_handshake_digest(idx, &mask, &md); idx++) { + if (mask & ssl_get_algorithm2(s)) { + int hashsize = EVP_MD_size(md); + EVP_MD_CTX *hdgst = s->s3->handshake_dgst[idx]; + if (!hdgst || hashsize < 0 + || hashsize > (int)(sizeof buf - (size_t)(q - buf))) { + /* + * internal error: 'buf' is too small for this cipersuite! + */ + err = 1; + } else { + if (!EVP_MD_CTX_copy_ex(&ctx, hdgst) || + !EVP_DigestFinal_ex(&ctx, q, &i) || + (i != (unsigned int)hashsize)) + err = 1; + q += hashsize; + } + } + } + + if (!tls1_PRF(ssl_get_algorithm2(s), + str, slen, buf, (int)(q - buf), NULL, 0, NULL, 0, NULL, 0, + s->session->master_key, s->session->master_key_length, + out, buf2, sizeof buf2)) + err = 1; + EVP_MD_CTX_cleanup(&ctx); + + OPENSSL_cleanse(buf, (int)(q - buf)); + OPENSSL_cleanse(buf2, sizeof(buf2)); + if (err) + return 0; + else + return sizeof buf2; +} int tls1_mac(SSL *ssl, unsigned char *md, int send) - { - SSL3_RECORD *rec; - unsigned char *seq; - EVP_MD_CTX *hash; - size_t md_size, orig_len; - int i; - EVP_MD_CTX hmac, *mac_ctx; - unsigned char header[13]; - int stream_mac = (send?(ssl->mac_flags & SSL_MAC_FLAG_WRITE_MAC_STREAM):(ssl->mac_flags&SSL_MAC_FLAG_READ_MAC_STREAM)); - int t; - - if (send) - { - rec= &(ssl->s3->wrec); - seq= &(ssl->s3->write_sequence[0]); - hash=ssl->write_hash; - } - else - { - rec= &(ssl->s3->rrec); - seq= &(ssl->s3->read_sequence[0]); - hash=ssl->read_hash; - } - - t=EVP_MD_CTX_size(hash); - OPENSSL_assert(t >= 0); - md_size=t; - - /* I should fix this up TLS TLS TLS TLS TLS XXXXXXXX */ - if (stream_mac) - { - mac_ctx = hash; - } - else - { - if (!EVP_MD_CTX_copy(&hmac,hash)) - return -1; - mac_ctx = &hmac; - } - - if (ssl->version == DTLS1_VERSION || ssl->version == DTLS1_BAD_VER) - { - unsigned char dtlsseq[8],*p=dtlsseq; - - s2n(send?ssl->d1->w_epoch:ssl->d1->r_epoch, p); - memcpy (p,&seq[2],6); - - memcpy(header, dtlsseq, 8); - } - else - memcpy(header, seq, 8); - - /* kludge: tls1_cbc_remove_padding passes padding length in rec->type */ - orig_len = rec->length+md_size+((unsigned int)rec->type>>8); - rec->type &= 0xff; - - header[8]=rec->type; - header[9]=(unsigned char)(ssl->version>>8); - header[10]=(unsigned char)(ssl->version); - header[11]=(rec->length)>>8; - header[12]=(rec->length)&0xff; - - if (!send && - EVP_CIPHER_CTX_mode(ssl->enc_read_ctx) == EVP_CIPH_CBC_MODE && - ssl3_cbc_record_digest_supported(mac_ctx)) - { - /* 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. */ - ssl3_cbc_digest_record( - mac_ctx, - md, &md_size, - header, rec->input, - rec->length + md_size, orig_len, - ssl->s3->read_mac_secret, - ssl->s3->read_mac_secret_size, - 0 /* not SSLv3 */); - } - else - { - EVP_DigestSignUpdate(mac_ctx,header,sizeof(header)); - EVP_DigestSignUpdate(mac_ctx,rec->input,rec->length); - t=EVP_DigestSignFinal(mac_ctx,md,&md_size); - OPENSSL_assert(t > 0); +{ + SSL3_RECORD *rec; + unsigned char *seq; + EVP_MD_CTX *hash; + size_t md_size, orig_len; + int i; + EVP_MD_CTX hmac, *mac_ctx; + unsigned char header[13]; + int stream_mac = (send ? (ssl->mac_flags & SSL_MAC_FLAG_WRITE_MAC_STREAM) + : (ssl->mac_flags & SSL_MAC_FLAG_READ_MAC_STREAM)); + int t; + + if (send) { + rec = &(ssl->s3->wrec); + seq = &(ssl->s3->write_sequence[0]); + hash = ssl->write_hash; + } else { + rec = &(ssl->s3->rrec); + seq = &(ssl->s3->read_sequence[0]); + hash = ssl->read_hash; + } + + t = EVP_MD_CTX_size(hash); + OPENSSL_assert(t >= 0); + md_size = t; + + /* I should fix this up TLS TLS TLS TLS TLS XXXXXXXX */ + if (stream_mac) { + mac_ctx = hash; + } else { + if (!EVP_MD_CTX_copy(&hmac, hash)) + return -1; + mac_ctx = &hmac; + } + + if (ssl->version == DTLS1_VERSION || ssl->version == DTLS1_BAD_VER) { + unsigned char dtlsseq[8], *p = dtlsseq; + + s2n(send ? ssl->d1->w_epoch : ssl->d1->r_epoch, p); + memcpy(p, &seq[2], 6); + + memcpy(header, dtlsseq, 8); + } else + memcpy(header, seq, 8); + + /* + * kludge: tls1_cbc_remove_padding passes padding length in rec->type + */ + orig_len = rec->length + md_size + ((unsigned int)rec->type >> 8); + rec->type &= 0xff; + + header[8] = rec->type; + header[9] = (unsigned char)(ssl->version >> 8); + header[10] = (unsigned char)(ssl->version); + header[11] = (rec->length) >> 8; + header[12] = (rec->length) & 0xff; + + if (!send && + EVP_CIPHER_CTX_mode(ssl->enc_read_ctx) == EVP_CIPH_CBC_MODE && + ssl3_cbc_record_digest_supported(mac_ctx)) { + /* + * 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. + */ + /* Final param == not SSLv3 */ + ssl3_cbc_digest_record(mac_ctx, + md, &md_size, + header, rec->input, + rec->length + md_size, orig_len, + ssl->s3->read_mac_secret, + ssl->s3->read_mac_secret_size, 0); + } else { + EVP_DigestSignUpdate(mac_ctx, header, sizeof(header)); + EVP_DigestSignUpdate(mac_ctx, rec->input, rec->length); + t = EVP_DigestSignFinal(mac_ctx, md, &md_size); + OPENSSL_assert(t > 0); #ifdef OPENSSL_FIPS - if (!send && FIPS_mode()) - tls_fips_digest_extra( - ssl->enc_read_ctx, - mac_ctx, rec->input, - rec->length, orig_len); + if (!send && FIPS_mode()) + tls_fips_digest_extra(ssl->enc_read_ctx, + mac_ctx, rec->input, rec->length, orig_len); #endif - } - - if (!stream_mac) - EVP_MD_CTX_cleanup(&hmac); + } + + if (!stream_mac) + EVP_MD_CTX_cleanup(&hmac); #ifdef TLS_DEBUG -fprintf(stderr,"seq="); -{int z; for (z=0; z<8; z++) fprintf(stderr,"%02X ",seq[z]); fprintf(stderr,"\n"); } -fprintf(stderr,"rec="); -{unsigned int z; for (z=0; z<rec->length; z++) fprintf(stderr,"%02X ",rec->data[z]); fprintf(stderr,"\n"); } + fprintf(stderr, "seq="); + { + int z; + for (z = 0; z < 8; z++) + fprintf(stderr, "%02X ", seq[z]); + fprintf(stderr, "\n"); + } + fprintf(stderr, "rec="); + { + unsigned int z; + for (z = 0; z < rec->length; z++) + fprintf(stderr, "%02X ", rec->data[z]); + fprintf(stderr, "\n"); + } #endif - if (ssl->version != DTLS1_VERSION && ssl->version != DTLS1_BAD_VER) - { - for (i=7; i>=0; i--) - { - ++seq[i]; - if (seq[i] != 0) break; - } - } - + if (ssl->version != DTLS1_VERSION && ssl->version != DTLS1_BAD_VER) { + for (i = 7; i >= 0; i--) { + ++seq[i]; + if (seq[i] != 0) + break; + } + } #ifdef TLS_DEBUG -{unsigned int z; for (z=0; z<md_size; z++) fprintf(stderr,"%02X ",md[z]); fprintf(stderr,"\n"); } + { + unsigned int z; + for (z = 0; z < md_size; z++) + fprintf(stderr, "%02X ", md[z]); + fprintf(stderr, "\n"); + } #endif - return(md_size); - } + return (md_size); +} int tls1_generate_master_secret(SSL *s, unsigned char *out, unsigned char *p, - int len) - { - unsigned char buff[SSL_MAX_MASTER_KEY_LENGTH]; - const void *co = NULL, *so = NULL; - int col = 0, sol = 0; - + int len) +{ + unsigned char buff[SSL_MAX_MASTER_KEY_LENGTH]; + const void *co = NULL, *so = NULL; + int col = 0, sol = 0; #ifdef KSSL_DEBUG - fprintf(stderr,"tls1_generate_master_secret(%p,%p, %p, %d)\n", s,out, p,len); -#endif /* KSSL_DEBUG */ + fprintf(stderr, "tls1_generate_master_secret(%p,%p, %p, %d)\n", s, out, p, + len); +#endif /* KSSL_DEBUG */ #ifdef TLSEXT_TYPE_opaque_prf_input - if (s->s3->client_opaque_prf_input != NULL && s->s3->server_opaque_prf_input != NULL && - s->s3->client_opaque_prf_input_len > 0 && - s->s3->client_opaque_prf_input_len == s->s3->server_opaque_prf_input_len) - { - co = s->s3->client_opaque_prf_input; - col = s->s3->server_opaque_prf_input_len; - so = s->s3->server_opaque_prf_input; - sol = s->s3->client_opaque_prf_input_len; /* must be same as col (see draft-rescorla-tls-opaque-prf-input-00.txt, section 3.1) */ - } + if (s->s3->client_opaque_prf_input != NULL + && s->s3->server_opaque_prf_input != NULL + && s->s3->client_opaque_prf_input_len > 0 + && s->s3->client_opaque_prf_input_len == + s->s3->server_opaque_prf_input_len) { + co = s->s3->client_opaque_prf_input; + col = s->s3->server_opaque_prf_input_len; + so = s->s3->server_opaque_prf_input; + /* + * must be same as col (see + * draft-resc-00.txts-opaque-prf-input-00.txt, section 3.1) + */ + sol = s->s3->client_opaque_prf_input_len; + } #endif - tls1_PRF(ssl_get_algorithm2(s), - TLS_MD_MASTER_SECRET_CONST,TLS_MD_MASTER_SECRET_CONST_SIZE, - s->s3->client_random,SSL3_RANDOM_SIZE, - co, col, - s->s3->server_random,SSL3_RANDOM_SIZE, - so, sol, - p,len, - s->session->master_key,buff,sizeof buff); + tls1_PRF(ssl_get_algorithm2(s), + TLS_MD_MASTER_SECRET_CONST, TLS_MD_MASTER_SECRET_CONST_SIZE, + s->s3->client_random, SSL3_RANDOM_SIZE, + co, col, + s->s3->server_random, SSL3_RANDOM_SIZE, + so, sol, p, len, s->session->master_key, buff, sizeof buff); + OPENSSL_cleanse(buff, sizeof buff); #ifdef SSL_DEBUG - fprintf(stderr, "Premaster Secret:\n"); - BIO_dump_fp(stderr, (char *)p, len); - fprintf(stderr, "Client Random:\n"); - BIO_dump_fp(stderr, (char *)s->s3->client_random, SSL3_RANDOM_SIZE); - fprintf(stderr, "Server Random:\n"); - BIO_dump_fp(stderr, (char *)s->s3->server_random, SSL3_RANDOM_SIZE); - fprintf(stderr, "Master Secret:\n"); - BIO_dump_fp(stderr, (char *)s->session->master_key, SSL3_MASTER_SECRET_SIZE); + fprintf(stderr, "Premaster Secret:\n"); + BIO_dump_fp(stderr, (char *)p, len); + fprintf(stderr, "Client Random:\n"); + BIO_dump_fp(stderr, (char *)s->s3->client_random, SSL3_RANDOM_SIZE); + fprintf(stderr, "Server Random:\n"); + BIO_dump_fp(stderr, (char *)s->s3->server_random, SSL3_RANDOM_SIZE); + fprintf(stderr, "Master Secret:\n"); + BIO_dump_fp(stderr, (char *)s->session->master_key, + SSL3_MASTER_SECRET_SIZE); #endif #ifdef KSSL_DEBUG - fprintf(stderr,"tls1_generate_master_secret() complete\n"); -#endif /* KSSL_DEBUG */ - return(SSL3_MASTER_SECRET_SIZE); - } + fprintf(stderr, "tls1_generate_master_secret() complete\n"); +#endif /* KSSL_DEBUG */ + return (SSL3_MASTER_SECRET_SIZE); +} int tls1_export_keying_material(SSL *s, unsigned char *out, size_t olen, - const char *label, size_t llen, const unsigned char *context, - size_t contextlen, int use_context) - { - unsigned char *buff; - unsigned char *val = NULL; - size_t vallen, currentvalpos; - int rv; + const char *label, size_t llen, + const unsigned char *context, + size_t contextlen, int use_context) +{ + unsigned char *buff; + unsigned char *val = NULL; + size_t vallen, currentvalpos; + int rv; #ifdef KSSL_DEBUG - fprintf(stderr,"tls1_export_keying_material(%p,%p,%lu,%s,%lu,%p,%lu)\n", s, out, olen, label, llen, context, contextlen); -#endif /* KSSL_DEBUG */ - - buff = OPENSSL_malloc(olen); - if (buff == NULL) goto err2; - - /* construct PRF arguments - * we construct the PRF argument ourself rather than passing separate - * values into the TLS PRF to ensure that the concatenation of values - * does not create a prohibited label. - */ - vallen = llen + SSL3_RANDOM_SIZE * 2; - if (use_context) - { - vallen += 2 + contextlen; - } - - val = OPENSSL_malloc(vallen); - if (val == NULL) goto err2; - currentvalpos = 0; - memcpy(val + currentvalpos, (unsigned char *) label, llen); - currentvalpos += llen; - memcpy(val + currentvalpos, s->s3->client_random, SSL3_RANDOM_SIZE); - currentvalpos += SSL3_RANDOM_SIZE; - memcpy(val + currentvalpos, s->s3->server_random, SSL3_RANDOM_SIZE); - currentvalpos += SSL3_RANDOM_SIZE; - - if (use_context) - { - val[currentvalpos] = (contextlen >> 8) & 0xff; - currentvalpos++; - val[currentvalpos] = contextlen & 0xff; - currentvalpos++; - if ((contextlen > 0) || (context != NULL)) - { - memcpy(val + currentvalpos, context, contextlen); - } - } - - /* disallow prohibited labels - * note that SSL3_RANDOM_SIZE > max(prohibited label len) = - * 15, so size of val > max(prohibited label len) = 15 and the - * comparisons won't have buffer overflow - */ - if (memcmp(val, TLS_MD_CLIENT_FINISH_CONST, - TLS_MD_CLIENT_FINISH_CONST_SIZE) == 0) goto err1; - if (memcmp(val, TLS_MD_SERVER_FINISH_CONST, - TLS_MD_SERVER_FINISH_CONST_SIZE) == 0) goto err1; - if (memcmp(val, TLS_MD_MASTER_SECRET_CONST, - TLS_MD_MASTER_SECRET_CONST_SIZE) == 0) goto err1; - if (memcmp(val, TLS_MD_KEY_EXPANSION_CONST, - TLS_MD_KEY_EXPANSION_CONST_SIZE) == 0) goto err1; - - rv = tls1_PRF(ssl_get_algorithm2(s), - val, vallen, - NULL, 0, - NULL, 0, - NULL, 0, - NULL, 0, - s->session->master_key,s->session->master_key_length, - out,buff,olen); + fprintf(stderr, "tls1_export_keying_material(%p,%p,%lu,%s,%lu,%p,%lu)\n", + s, out, olen, label, llen, context, contextlen); +#endif /* KSSL_DEBUG */ + + buff = OPENSSL_malloc(olen); + if (buff == NULL) + goto err2; + + /* + * construct PRF arguments we construct the PRF argument ourself rather + * than passing separate values into the TLS PRF to ensure that the + * concatenation of values does not create a prohibited label. + */ + vallen = llen + SSL3_RANDOM_SIZE * 2; + if (use_context) { + vallen += 2 + contextlen; + } + + val = OPENSSL_malloc(vallen); + if (val == NULL) + goto err2; + currentvalpos = 0; + memcpy(val + currentvalpos, (unsigned char *)label, llen); + currentvalpos += llen; + memcpy(val + currentvalpos, s->s3->client_random, SSL3_RANDOM_SIZE); + currentvalpos += SSL3_RANDOM_SIZE; + memcpy(val + currentvalpos, s->s3->server_random, SSL3_RANDOM_SIZE); + currentvalpos += SSL3_RANDOM_SIZE; + + if (use_context) { + val[currentvalpos] = (contextlen >> 8) & 0xff; + currentvalpos++; + val[currentvalpos] = contextlen & 0xff; + currentvalpos++; + if ((contextlen > 0) || (context != NULL)) { + memcpy(val + currentvalpos, context, contextlen); + } + } + + /* + * disallow prohibited labels note that SSL3_RANDOM_SIZE > max(prohibited + * label len) = 15, so size of val > max(prohibited label len) = 15 and + * the comparisons won't have buffer overflow + */ + if (memcmp(val, TLS_MD_CLIENT_FINISH_CONST, + TLS_MD_CLIENT_FINISH_CONST_SIZE) == 0) + goto err1; + if (memcmp(val, TLS_MD_SERVER_FINISH_CONST, + TLS_MD_SERVER_FINISH_CONST_SIZE) == 0) + goto err1; + if (memcmp(val, TLS_MD_MASTER_SECRET_CONST, + TLS_MD_MASTER_SECRET_CONST_SIZE) == 0) + goto err1; + if (memcmp(val, TLS_MD_KEY_EXPANSION_CONST, + TLS_MD_KEY_EXPANSION_CONST_SIZE) == 0) + goto err1; + + rv = tls1_PRF(ssl_get_algorithm2(s), + val, vallen, + NULL, 0, + NULL, 0, + NULL, 0, + NULL, 0, + s->session->master_key, s->session->master_key_length, + out, buff, olen); + OPENSSL_cleanse(val, vallen); + OPENSSL_cleanse(buff, olen); #ifdef KSSL_DEBUG - fprintf(stderr,"tls1_export_keying_material() complete\n"); -#endif /* KSSL_DEBUG */ - goto ret; -err1: - SSLerr(SSL_F_TLS1_EXPORT_KEYING_MATERIAL, SSL_R_TLS_ILLEGAL_EXPORTER_LABEL); - rv = 0; - goto ret; -err2: - SSLerr(SSL_F_TLS1_EXPORT_KEYING_MATERIAL, ERR_R_MALLOC_FAILURE); - rv = 0; -ret: - if (buff != NULL) OPENSSL_free(buff); - if (val != NULL) OPENSSL_free(val); - return(rv); - } + fprintf(stderr, "tls1_export_keying_material() complete\n"); +#endif /* KSSL_DEBUG */ + goto ret; + err1: + SSLerr(SSL_F_TLS1_EXPORT_KEYING_MATERIAL, + SSL_R_TLS_ILLEGAL_EXPORTER_LABEL); + rv = 0; + goto ret; + err2: + SSLerr(SSL_F_TLS1_EXPORT_KEYING_MATERIAL, ERR_R_MALLOC_FAILURE); + rv = 0; + ret: + if (buff != NULL) + OPENSSL_free(buff); + if (val != NULL) + OPENSSL_free(val); + return (rv); +} int tls1_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(TLS1_AD_DECRYPTION_FAILED); - case SSL_AD_RECORD_OVERFLOW: return(TLS1_AD_RECORD_OVERFLOW); - 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(-1); - 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(TLS1_AD_UNKNOWN_CA); - case SSL_AD_ACCESS_DENIED: return(TLS1_AD_ACCESS_DENIED); - case SSL_AD_DECODE_ERROR: return(TLS1_AD_DECODE_ERROR); - case SSL_AD_DECRYPT_ERROR: return(TLS1_AD_DECRYPT_ERROR); - case SSL_AD_EXPORT_RESTRICTION: return(TLS1_AD_EXPORT_RESTRICTION); - case SSL_AD_PROTOCOL_VERSION: return(TLS1_AD_PROTOCOL_VERSION); - case SSL_AD_INSUFFICIENT_SECURITY:return(TLS1_AD_INSUFFICIENT_SECURITY); - case SSL_AD_INTERNAL_ERROR: return(TLS1_AD_INTERNAL_ERROR); - case SSL_AD_USER_CANCELLED: return(TLS1_AD_USER_CANCELLED); - case SSL_AD_NO_RENEGOTIATION: return(TLS1_AD_NO_RENEGOTIATION); - case SSL_AD_UNSUPPORTED_EXTENSION: return(TLS1_AD_UNSUPPORTED_EXTENSION); - case SSL_AD_CERTIFICATE_UNOBTAINABLE: return(TLS1_AD_CERTIFICATE_UNOBTAINABLE); - case SSL_AD_UNRECOGNIZED_NAME: return(TLS1_AD_UNRECOGNIZED_NAME); - case SSL_AD_BAD_CERTIFICATE_STATUS_RESPONSE: return(TLS1_AD_BAD_CERTIFICATE_STATUS_RESPONSE); - case SSL_AD_BAD_CERTIFICATE_HASH_VALUE: return(TLS1_AD_BAD_CERTIFICATE_HASH_VALUE); - case SSL_AD_UNKNOWN_PSK_IDENTITY:return(TLS1_AD_UNKNOWN_PSK_IDENTITY); - case SSL_AD_INAPPROPRIATE_FALLBACK:return(TLS1_AD_INAPPROPRIATE_FALLBACK); -#if 0 /* not appropriate for TLS, not used for DTLS */ - case DTLS1_AD_MISSING_HANDSHAKE_MESSAGE: return - (DTLS1_AD_MISSING_HANDSHAKE_MESSAGE); +{ + 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 (TLS1_AD_DECRYPTION_FAILED); + case SSL_AD_RECORD_OVERFLOW: + return (TLS1_AD_RECORD_OVERFLOW); + 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 (-1); + 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 (TLS1_AD_UNKNOWN_CA); + case SSL_AD_ACCESS_DENIED: + return (TLS1_AD_ACCESS_DENIED); + case SSL_AD_DECODE_ERROR: + return (TLS1_AD_DECODE_ERROR); + case SSL_AD_DECRYPT_ERROR: + return (TLS1_AD_DECRYPT_ERROR); + case SSL_AD_EXPORT_RESTRICTION: + return (TLS1_AD_EXPORT_RESTRICTION); + case SSL_AD_PROTOCOL_VERSION: + return (TLS1_AD_PROTOCOL_VERSION); + case SSL_AD_INSUFFICIENT_SECURITY: + return (TLS1_AD_INSUFFICIENT_SECURITY); + case SSL_AD_INTERNAL_ERROR: + return (TLS1_AD_INTERNAL_ERROR); + case SSL_AD_USER_CANCELLED: + return (TLS1_AD_USER_CANCELLED); + case SSL_AD_NO_RENEGOTIATION: + return (TLS1_AD_NO_RENEGOTIATION); + case SSL_AD_UNSUPPORTED_EXTENSION: + return (TLS1_AD_UNSUPPORTED_EXTENSION); + case SSL_AD_CERTIFICATE_UNOBTAINABLE: + return (TLS1_AD_CERTIFICATE_UNOBTAINABLE); + case SSL_AD_UNRECOGNIZED_NAME: + return (TLS1_AD_UNRECOGNIZED_NAME); + case SSL_AD_BAD_CERTIFICATE_STATUS_RESPONSE: + return (TLS1_AD_BAD_CERTIFICATE_STATUS_RESPONSE); + case SSL_AD_BAD_CERTIFICATE_HASH_VALUE: + return (TLS1_AD_BAD_CERTIFICATE_HASH_VALUE); + case SSL_AD_UNKNOWN_PSK_IDENTITY: + return (TLS1_AD_UNKNOWN_PSK_IDENTITY); + case SSL_AD_INAPPROPRIATE_FALLBACK: + return (TLS1_AD_INAPPROPRIATE_FALLBACK); +#if 0 + /* not appropriate for TLS, not used for DTLS */ + case DTLS1_AD_MISSING_HANDSHAKE_MESSAGE: + return (DTLS1_AD_MISSING_HANDSHAKE_MESSAGE); #endif - default: return(-1); - } - } + default: + return (-1); + } +} |