/*
- * Copyright 1995-2018 The OpenSSL Project Authors. All Rights Reserved.
+ * Copyright 1995-2020 The OpenSSL Project Authors. All Rights Reserved.
* Copyright 2005 Nokia. All rights reserved.
*
* Licensed under the Apache License 2.0 (the "License"). You may not use
*/
#include <stdio.h>
-#include "ssl_locl.h"
-#include "record/record_locl.h"
+#include "ssl_local.h"
+#include "record/record_local.h"
#include "internal/ktls.h"
#include "internal/cryptlib.h"
#include <openssl/comp.h>
SSLerr(SSL_F_TLS1_PRF, ERR_R_INTERNAL_ERROR);
return 0;
}
- kdf = EVP_KDF_fetch(NULL, OSSL_KDF_NAME_TLS1_PRF, NULL);
+ kdf = EVP_KDF_fetch(s->ctx->libctx, OSSL_KDF_NAME_TLS1_PRF, s->ctx->propq);
if (kdf == NULL)
goto err;
kctx = EVP_KDF_CTX_new(kdf);
goto err;
mdname = EVP_MD_name(md);
*p++ = OSSL_PARAM_construct_utf8_string(OSSL_KDF_PARAM_DIGEST,
- (char *)mdname, strlen(mdname) + 1);
+ (char *)mdname, 0);
*p++ = OSSL_PARAM_construct_octet_string(OSSL_KDF_PARAM_SECRET,
(unsigned char *)sec,
(size_t)slen);
* record layer. If read_ahead is enabled, then this might be false and this
* function will fail.
*/
+# ifndef OPENSSL_NO_KTLS_RX
static int count_unprocessed_records(SSL *s)
{
SSL3_BUFFER *rbuf = RECORD_LAYER_get_rbuf(&s->rlayer);
return count;
}
+# endif
#endif
+
+int tls_provider_set_tls_params(SSL *s, EVP_CIPHER_CTX *ctx,
+ const EVP_CIPHER *ciph,
+ const EVP_MD *md)
+{
+ /*
+ * Provided cipher, the TLS padding/MAC removal is performed provider
+ * side so we need to tell the ctx about our TLS version and mac size
+ */
+ OSSL_PARAM params[3], *pprm = params;
+ size_t macsize = 0;
+ int imacsize = -1;
+
+ if ((EVP_CIPHER_flags(ciph) & EVP_CIPH_FLAG_AEAD_CIPHER) == 0
+ /*
+ * We look at s->ext.use_etm instead of SSL_READ_ETM() or
+ * SSL_WRITE_ETM() because this test applies to both reading
+ * and writing.
+ */
+ && !s->ext.use_etm)
+ imacsize = EVP_MD_size(md);
+ if (imacsize >= 0)
+ macsize = (size_t)imacsize;
+
+ *pprm++ = OSSL_PARAM_construct_int(OSSL_CIPHER_PARAM_TLS_VERSION,
+ &s->version);
+ *pprm++ = OSSL_PARAM_construct_size_t(OSSL_CIPHER_PARAM_TLS_MAC_SIZE,
+ &macsize);
+ *pprm = OSSL_PARAM_construct_end();
+
+ if (!EVP_CIPHER_CTX_set_params(ctx, params)) {
+ SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS1_CHANGE_CIPHER_STATE,
+ ERR_R_INTERNAL_ERROR);
+ return 0;
+ }
+
+ return 1;
+}
+
+
+static int tls_iv_length_within_key_block(const EVP_CIPHER *c)
+{
+ /* If GCM/CCM mode only part of IV comes from PRF */
+ if (EVP_CIPHER_mode(c) == EVP_CIPH_GCM_MODE)
+ return EVP_GCM_TLS_FIXED_IV_LEN;
+ else if (EVP_CIPHER_mode(c) == EVP_CIPH_CCM_MODE)
+ return EVP_CCM_TLS_FIXED_IV_LEN;
+ else
+ return EVP_CIPHER_iv_length(c);
+}
+
int tls1_change_cipher_state(SSL *s, int which)
{
unsigned char *p, *mac_secret;
size_t n, i, j, k, cl;
int reuse_dd = 0;
#ifndef OPENSSL_NO_KTLS
- struct tls12_crypto_info_aes_gcm_128 crypto_info;
- BIO *bio;
- unsigned char geniv[12];
+ ktls_crypto_info_t crypto_info;
+ unsigned char *rec_seq;
+ void *rl_sequence;
+# ifndef OPENSSL_NO_KTLS_RX
int count_unprocessed;
int bit;
+# endif
+ BIO *bio;
#endif
c = s->s3.tmp.new_sym_enc;
else
s->mac_flags &= ~SSL_MAC_FLAG_READ_MAC_STREAM;
+ if (s->s3.tmp.new_cipher->algorithm2 & TLS1_TLSTREE)
+ s->mac_flags |= SSL_MAC_FLAG_READ_MAC_TLSTREE;
+ else
+ s->mac_flags &= ~SSL_MAC_FLAG_READ_MAC_TLSTREE;
+
if (s->enc_read_ctx != NULL) {
reuse_dd = 1;
} else if ((s->enc_read_ctx = EVP_CIPHER_CTX_new()) == NULL) {
s->mac_flags |= SSL_MAC_FLAG_WRITE_MAC_STREAM;
else
s->mac_flags &= ~SSL_MAC_FLAG_WRITE_MAC_STREAM;
+
+ if (s->s3.tmp.new_cipher->algorithm2 & TLS1_TLSTREE)
+ s->mac_flags |= SSL_MAC_FLAG_WRITE_MAC_TLSTREE;
+ else
+ s->mac_flags &= ~SSL_MAC_FLAG_WRITE_MAC_TLSTREE;
if (s->enc_write_ctx != NULL && !SSL_IS_DTLS(s)) {
reuse_dd = 1;
} else if ((s->enc_write_ctx = EVP_CIPHER_CTX_new()) == NULL) {
/* TODO(size_t): convert me */
cl = EVP_CIPHER_key_length(c);
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)
- k = EVP_GCM_TLS_FIXED_IV_LEN;
- else if (EVP_CIPHER_mode(c) == EVP_CIPH_CCM_MODE)
- k = EVP_CCM_TLS_FIXED_IV_LEN;
- else
- k = EVP_CIPHER_iv_length(c);
+ k = tls_iv_length_within_key_block(c);
if ((which == SSL3_CHANGE_CIPHER_CLIENT_WRITE) ||
(which == SSL3_CHANGE_CIPHER_SERVER_READ)) {
ms = &(p[0]);
memcpy(mac_secret, ms, i);
if (!(EVP_CIPHER_flags(c) & EVP_CIPH_FLAG_AEAD_CIPHER)) {
- /* TODO(size_t): Convert this function */
- mac_key = EVP_PKEY_new_mac_key(mac_type, NULL, mac_secret,
- (int)*mac_secret_size);
+ if (mac_type == EVP_PKEY_HMAC) {
+ mac_key = EVP_PKEY_new_raw_private_key_ex(s->ctx->libctx, "HMAC",
+ s->ctx->propq, mac_secret,
+ *mac_secret_size);
+ } else {
+ /*
+ * If its not HMAC then the only other types of MAC we support are
+ * the GOST MACs, so we need to use the old style way of creating
+ * a MAC key.
+ */
+ mac_key = EVP_PKEY_new_mac_key(mac_type, NULL, mac_secret,
+ (int)*mac_secret_size);
+ }
if (mac_key == NULL
- || EVP_DigestSignInit(mac_ctx, NULL, m, NULL, mac_key) <= 0) {
+ || EVP_DigestSignInit_ex(mac_ctx, NULL, EVP_MD_name(m),
+ s->ctx->libctx, s->ctx->propq, mac_key) <= 0) {
EVP_PKEY_free(mac_key);
SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS1_CHANGE_CIPHER_STATE,
ERR_R_INTERNAL_ERROR);
ERR_R_INTERNAL_ERROR);
goto err;
}
+ if (EVP_CIPHER_provider(c) != NULL
+ && !tls_provider_set_tls_params(s, dd, c, m)) {
+ /* SSLfatal already called */
+ goto err;
+ }
+
#ifndef OPENSSL_NO_KTLS
if (s->compress)
goto skip_ktls;
if (ssl_get_max_send_fragment(s) != SSL3_RT_MAX_PLAIN_LENGTH)
goto skip_ktls;
- /* check that cipher is AES_GCM_128 */
- if (EVP_CIPHER_nid(c) != NID_aes_128_gcm
- || EVP_CIPHER_mode(c) != EVP_CIPH_GCM_MODE
- || EVP_CIPHER_key_length(c) != TLS_CIPHER_AES_GCM_128_KEY_SIZE)
- goto skip_ktls;
-
- /* check version is 1.2 */
- if (s->version != TLS1_2_VERSION)
+ /* check that cipher is supported */
+ if (!ktls_check_supported_cipher(s, c, dd))
goto skip_ktls;
if (which & SSL3_CC_WRITE)
goto err;
}
- memset(&crypto_info, 0, sizeof(crypto_info));
- crypto_info.info.cipher_type = TLS_CIPHER_AES_GCM_128;
- crypto_info.info.version = s->version;
-
- EVP_CIPHER_CTX_ctrl(dd, EVP_CTRL_GET_IV,
- EVP_GCM_TLS_FIXED_IV_LEN + EVP_GCM_TLS_EXPLICIT_IV_LEN,
- geniv);
- memcpy(crypto_info.iv, geniv + EVP_GCM_TLS_FIXED_IV_LEN,
- TLS_CIPHER_AES_GCM_128_IV_SIZE);
- memcpy(crypto_info.salt, geniv, TLS_CIPHER_AES_GCM_128_SALT_SIZE);
- memcpy(crypto_info.key, key, EVP_CIPHER_key_length(c));
if (which & SSL3_CC_WRITE)
- memcpy(crypto_info.rec_seq, &s->rlayer.write_sequence,
- TLS_CIPHER_AES_GCM_128_REC_SEQ_SIZE);
+ rl_sequence = RECORD_LAYER_get_write_sequence(&s->rlayer);
else
- memcpy(crypto_info.rec_seq, &s->rlayer.read_sequence,
- TLS_CIPHER_AES_GCM_128_REC_SEQ_SIZE);
+ rl_sequence = RECORD_LAYER_get_read_sequence(&s->rlayer);
+
+ if (!ktls_configure_crypto(s, c, dd, rl_sequence, &crypto_info, &rec_seq,
+ iv, key, ms, *mac_secret_size))
+ goto skip_ktls;
if (which & SSL3_CC_READ) {
+# ifndef OPENSSL_NO_KTLS_RX
count_unprocessed = count_unprocessed_records(s);
if (count_unprocessed < 0)
goto skip_ktls;
/* increment the crypto_info record sequence */
while (count_unprocessed) {
for (bit = 7; bit >= 0; bit--) { /* increment */
- ++crypto_info.rec_seq[bit];
- if (crypto_info.rec_seq[bit] != 0)
+ ++rec_seq[bit];
+ if (rec_seq[bit] != 0)
break;
}
count_unprocessed--;
}
+# else
+ goto skip_ktls;
+# endif
}
/* ktls works with user provided buffers directly */
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, s->ext.use_etm)) {
+ if (!ssl_cipher_get_evp(s->ctx, s->session, &c, &hash, &mac_type,
+ &mac_secret_size, &comp, s->ext.use_etm)) {
SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS1_SETUP_KEY_BLOCK,
SSL_R_CIPHER_OR_HASH_UNAVAILABLE);
return 0;
}
+ ssl_evp_cipher_free(s->s3.tmp.new_sym_enc);
s->s3.tmp.new_sym_enc = c;
+ ssl_evp_md_free(s->s3.tmp.new_hash);
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 = mac_secret_size + EVP_CIPHER_key_length(c) + tls_iv_length_within_key_block(c);
num *= 2;
ssl3_cleanup_key_block(s);
s->s3.tmp.key_block = p;
OSSL_TRACE_BEGIN(TLS) {
+ BIO_printf(trc_out, "key block length: %ld\n", num);
BIO_printf(trc_out, "client random\n");
BIO_dump_indent(trc_out, s->s3.client_random, SSL3_RANDOM_SIZE, 4);
BIO_printf(trc_out, "server random\n");
{
size_t hashlen;
unsigned char hash[EVP_MAX_MD_SIZE];
+ size_t finished_size = TLS1_FINISH_MAC_LENGTH;
+
+ if (s->s3.tmp.new_cipher->algorithm_mkey & SSL_kGOST18)
+ finished_size = 32;
if (!ssl3_digest_cached_records(s, 0)) {
/* SSLfatal() already called */
if (!tls1_PRF(s, str, slen, hash, hashlen, NULL, 0, NULL, 0, NULL, 0,
s->session->master_key, s->session->master_key_length,
- out, TLS1_FINISH_MAC_LENGTH, 1)) {
+ out, finished_size, 1)) {
/* SSLfatal() already called */
return 0;
}
OPENSSL_cleanse(hash, hashlen);
- return TLS1_FINISH_MAC_LENGTH;
+ return finished_size;
}
int tls1_generate_master_secret(SSL *s, unsigned char *out, unsigned char *p,
unsigned char hash[EVP_MAX_MD_SIZE * 2];
size_t hashlen;
/*
- * Digest cached records keeping record buffer (if present): this wont
+ * Digest cached records keeping record buffer (if present): this won't
* affect client auth because we're freezing the buffer at the same
* point (after client key exchange and before certificate verify)
*/
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