-/* ssl/t1_enc.c */
/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
* All rights reserved.
*
# include <openssl/comp.h>
#endif
#include <openssl/evp.h>
-#include <openssl/hmac.h>
-#include <openssl/md5.h>
+#include <openssl/kdf.h>
#include <openssl/rand.h>
-/* 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, ctx_init;
- 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_init(&ctx_init);
- EVP_MD_CTX_set_flags(&ctx_init, 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_init, NULL, md, NULL, mac_key))
- goto err;
- if (!EVP_MD_CTX_copy_ex(&ctx, &ctx_init))
- 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_MD_CTX_copy_ex(&ctx, &ctx_init))
- goto err;
- if (!EVP_DigestSignUpdate(&ctx, A1, A1_len))
- goto err;
- if (olen > chunk && !EVP_MD_CTX_copy_ex(&ctx_tmp, &ctx))
- 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);
- EVP_MD_CTX_cleanup(&ctx_init);
- OPENSSL_cleanse(A1, sizeof(A1));
- return ret;
-}
-
-/* seed1 through seed5 are virtually concatenated */
-static int tls1_PRF(long digest_mask,
+/* seed1 through seed5 are concatenated */
+static int tls1_PRF(SSL *s,
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)
+ unsigned char *out, int olen)
{
- int len, i, idx, count;
- const unsigned char *S1;
- long m;
- const EVP_MD *md;
+ const EVP_MD *md = ssl_prf_md(s);
+ EVP_PKEY_CTX *pctx = NULL;
+
int ret = 0;
+ size_t outlen = olen;
- /* 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) {
+ if (md == NULL) {
/* 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];
- }
- }
+ return 0;
}
+ pctx = EVP_PKEY_CTX_new_id(EVP_PKEY_TLS1_PRF, NULL);
+ if (pctx == NULL || EVP_PKEY_derive_init(pctx) <= 0
+ || EVP_PKEY_CTX_set_tls1_prf_md(pctx, md) <= 0
+ || EVP_PKEY_CTX_set1_tls1_prf_secret(pctx, sec, slen) <= 0)
+ goto err;
+
+ if (EVP_PKEY_CTX_add1_tls1_prf_seed(pctx, seed1, seed1_len) <= 0)
+ goto err;
+ if (EVP_PKEY_CTX_add1_tls1_prf_seed(pctx, seed2, seed2_len) <= 0)
+ goto err;
+ if (EVP_PKEY_CTX_add1_tls1_prf_seed(pctx, seed3, seed3_len) <= 0)
+ goto err;
+ if (EVP_PKEY_CTX_add1_tls1_prf_seed(pctx, seed4, seed4_len) <= 0)
+ goto err;
+ if (EVP_PKEY_CTX_add1_tls1_prf_seed(pctx, seed5, seed5_len) <= 0)
+ goto err;
+
+ if (EVP_PKEY_derive(pctx, out, &outlen) <= 0)
+ goto err;
ret = 1;
- err:
+
+ err:
+ EVP_PKEY_CTX_free(pctx);
return ret;
}
-static int tls1_generate_key_block(SSL *s, unsigned char *km,
- unsigned char *tmp, int num)
+static int tls1_generate_key_block(SSL *s, unsigned char *km, int num)
{
int ret;
- ret = tls1_PRF(ssl_get_algorithm2(s),
+ ret = tls1_PRF(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);
+ s->session->master_key_length, km, num);
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;
#ifndef OPENSSL_NO_COMP
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 n, i, j, k, 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;
if (s->enc_read_ctx != NULL)
reuse_dd = 1;
- else if ((s->enc_read_ctx =
- OPENSSL_malloc(sizeof(*s->enc_read_ctx))) == NULL)
+ else if ((s->enc_read_ctx = EVP_CIPHER_CTX_new()) == 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);
+ EVP_CIPHER_CTX_reset(s->enc_read_ctx);
dd = s->enc_read_ctx;
mac_ctx = ssl_replace_hash(&s->read_hash, NULL);
if (mac_ctx == NULL)
goto err;
dd = s->enc_write_ctx;
if (SSL_IS_DTLS(s)) {
- mac_ctx = EVP_MD_CTX_create();
+ mac_ctx = EVP_MD_CTX_new();
if (mac_ctx == NULL)
goto err;
s->write_hash = mac_ctx;
}
if (reuse_dd)
- EVP_CIPHER_CTX_cleanup(dd);
+ EVP_CIPHER_CTX_reset(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;
+ j = cl;
/* Was j=(exp)?5:EVP_CIPHER_key_length(c); */
/* If GCM/CCM mode only part of IV comes from PRF */
if (EVP_CIPHER_mode(c) == EVP_CIPH_GCM_MODE)
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 += 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) {
}
EVP_PKEY_free(mac_key);
}
-#ifdef TLS_DEBUG
+#ifdef SSL_DEBUG
printf("which = %04X\nmac key=", which);
{
int 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]);
- }
- }
if (EVP_CIPHER_mode(c) == EVP_CIPH_GCM_MODE) {
if (!EVP_CipherInit_ex(dd, c, NULL, key, NULL, (which & SSL3_CC_WRITE))
}
#endif
-#ifdef TLS_DEBUG
+#ifdef SSL_DEBUG
printf("which = %04X\nkey=", which);
{
int z;
int tls1_setup_key_block(SSL *s)
{
- unsigned char *p1, *p2 = NULL;
+ unsigned char *p;
const EVP_CIPHER *c;
const EVP_MD *hash;
int num;
ssl3_cleanup_key_block(s);
- if ((p1 = OPENSSL_malloc(num)) == NULL) {
+ if ((p = 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;
+ s->s3->tmp.key_block = p;
- if ((p2 = OPENSSL_malloc(num)) == NULL) {
- SSLerr(SSL_F_TLS1_SETUP_KEY_BLOCK, ERR_R_MALLOC_FAILURE);
- OPENSSL_free(p1);
- goto err;
- }
-#ifdef TLS_DEBUG
+#ifdef SSL_DEBUG
printf("client random\n");
{
int z;
((z + 1) % 16) ? ' ' : '\n');
}
#endif
- if (!tls1_generate_key_block(s, p1, p2, num))
+ if (!tls1_generate_key_block(s, p, num))
goto err;
-#ifdef TLS_DEBUG
+#ifdef SSL_DEBUG
printf("\nkey block\n");
{
int z;
for (z = 0; z < num; z++)
- printf("%02X%c", p1[z], ((z + 1) % 16) ? ' ' : '\n');
+ printf("%02X%c", p[z], ((z + 1) % 16) ? ' ' : '\n');
}
#endif
ret = 1;
err:
- OPENSSL_clear_free(p2, num);
return (ret);
}
unsigned char *out)
{
int hashlen;
- unsigned char hash[2 * EVP_MAX_MD_SIZE];
- unsigned char buf2[12];
+ unsigned char hash[EVP_MAX_MD_SIZE];
if (!ssl3_digest_cached_records(s, 0))
return 0;
if (hashlen == 0)
return 0;
- if (!tls1_PRF(ssl_get_algorithm2(s),
- str, slen, hash, hashlen, NULL, 0, NULL, 0, NULL, 0,
+ if (!tls1_PRF(s, str, slen, hash, hashlen, NULL, 0, NULL, 0, NULL, 0,
s->session->master_key, s->session->master_key_length,
- out, buf2, sizeof buf2))
+ out, TLS1_FINISH_MAC_LENGTH))
return 0;
OPENSSL_cleanse(hash, hashlen);
- OPENSSL_cleanse(buf2, sizeof(buf2));
- return sizeof(buf2);
+ return TLS1_FINISH_MAC_LENGTH;
}
int tls1_generate_master_secret(SSL *s, unsigned char *out, unsigned char *p,
int len)
{
- unsigned char buff[SSL_MAX_MASTER_KEY_LENGTH];
-
if (s->session->flags & SSL_SESS_FLAG_EXTMS) {
unsigned char hash[EVP_MAX_MD_SIZE * 2];
int hashlen;
fprintf(stderr, "Handshake hashes:\n");
BIO_dump_fp(stderr, (char *)hash, hashlen);
#endif
- tls1_PRF(ssl_get_algorithm2(s),
+ tls1_PRF(s,
TLS_MD_EXTENDED_MASTER_SECRET_CONST,
TLS_MD_EXTENDED_MASTER_SECRET_CONST_SIZE,
hash, hashlen,
NULL, 0,
NULL, 0,
- NULL, 0, p, len, s->session->master_key, buff, sizeof buff);
+ NULL, 0, p, len, s->session->master_key,
+ SSL3_MASTER_SECRET_SIZE);
OPENSSL_cleanse(hash, hashlen);
} else {
- tls1_PRF(ssl_get_algorithm2(s),
+ tls1_PRF(s,
TLS_MD_MASTER_SECRET_CONST,
TLS_MD_MASTER_SECRET_CONST_SIZE,
s->s3->client_random, SSL3_RANDOM_SIZE,
NULL, 0,
s->s3->server_random, SSL3_RANDOM_SIZE,
- NULL, 0, p, len, s->session->master_key, buff, sizeof buff);
+ NULL, 0, p, len, s->session->master_key,
+ SSL3_MASTER_SECRET_SIZE);
}
- OPENSSL_cleanse(buff, sizeof buff);
#ifdef SSL_DEBUG
fprintf(stderr, "Premaster Secret:\n");
BIO_dump_fp(stderr, (char *)p, len);
TLS_MD_KEY_EXPANSION_CONST_SIZE) == 0)
goto err1;
- rv = tls1_PRF(ssl_get_algorithm2(s),
+ rv = tls1_PRF(s,
val, vallen,
NULL, 0,
NULL, 0,
NULL, 0,
NULL, 0,
s->session->master_key, s->session->master_key_length,
- out, buff, olen);
+ out, olen);
goto ret;
err1:
SSLerr(SSL_F_TLS1_EXPORT_KEYING_MATERIAL, ERR_R_MALLOC_FAILURE);
rv = 0;
ret:
- CRYPTO_clear_free(val, vallen);
- CRYPTO_clear_free(buff, olen);
+ OPENSSL_clear_free(val, vallen);
+ OPENSSL_clear_free(buff, olen);
return (rv);
}
projects / openssl.git / blobdiff