diff options
author | Matt Caswell <matt@openssl.org> | 2015-01-21 23:55:44 +0000 |
---|---|---|
committer | Matt Caswell <matt@openssl.org> | 2015-01-22 09:38:39 +0000 |
commit | 10621efd3296a92f489f6ab26a88e88d9790930e (patch) | |
tree | aab0039a60553725f787518cc50fd630b55ce8a8 /ssl/t1_enc.c | |
parent | e498b83fed7025eeacb4dd2ad183c3f6236467b2 (diff) |
Run util/openssl-format-source -v -c .
Reviewed-by: Tim Hudson <tjh@openssl.org>
Diffstat (limited to 'ssl/t1_enc.c')
-rw-r--r-- | ssl/t1_enc.c | 2089 |
1 files changed, 1068 insertions, 1021 deletions
diff --git a/ssl/t1_enc.c b/ssl/t1_enc.c index 694e24eb14..99d830d449 100644 --- a/ssl/t1_enc.c +++ b/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 @@ -138,539 +138,562 @@ #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++; + } + 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) { + 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); #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); + 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"); + |