#include <openssl/evp.h>
#include <openssl/hmac.h>
#include <openssl/x509.h>
-#ifndef OPENSSL_NO_DH
-# include <openssl/dh.h>
-#endif
+#include <openssl/dh.h>
#include <openssl/bn.h>
#include <openssl/md5.h>
if (mt == SSL3_MT_CERTIFICATE) {
st->hand_state = TLS_ST_SR_CERT;
return 1;
- }
+ }
}
break;
return 0;
}
+/*
+ * Maximum size (excluding the Handshake header) of a ClientHello message,
+ * calculated as follows:
+ *
+ * 2 + # client_version
+ * 32 + # only valid length for random
+ * 1 + # length of session_id
+ * 32 + # maximum size for session_id
+ * 2 + # length of cipher suites
+ * 2^16-2 + # maximum length of cipher suites array
+ * 1 + # length of compression_methods
+ * 2^8-1 + # maximum length of compression methods
+ * 2 + # length of extensions
+ * 2^16-1 # maximum length of extensions
+ */
+#define CLIENT_HELLO_MAX_LENGTH 131396
+
#define CLIENT_KEY_EXCH_MAX_LENGTH 2048
#define NEXT_PROTO_MAX_LENGTH 514
switch(st->hand_state) {
case TLS_ST_SR_CLNT_HELLO:
- return SSL3_RT_MAX_PLAIN_LENGTH;
+ return CLIENT_HELLO_MAX_LENGTH;
case TLS_ST_SR_CERT:
return s->max_cert_list;
len = dtls_raw_hello_verify_request(&buf[DTLS1_HM_HEADER_LENGTH],
s->d1->cookie, s->d1->cookie_len);
- dtls1_set_message_header(s, buf, DTLS1_MT_HELLO_VERIFY_REQUEST, len, 0,
+ dtls1_set_message_header(s, DTLS1_MT_HELLO_VERIFY_REQUEST, len, 0,
len);
len += DTLS1_HM_HEADER_LENGTH;
/* |cookie| will only be initialized for DTLS. */
PACKET session_id, cipher_suites, compression, extensions, cookie;
int is_v2_record;
+ static const unsigned char null_compression = 0;
is_v2_record = RECORD_LAYER_is_sslv2_record(&s->rlayer);
goto f_err;
}
- /* Load the client random */
+ /* Load the client random and compression list. */
challenge_len = challenge_len > SSL3_RANDOM_SIZE ? SSL3_RANDOM_SIZE :
challenge_len;
memset(s->s3->client_random, 0, SSL3_RANDOM_SIZE);
if (!PACKET_copy_bytes(&challenge,
s->s3->client_random + SSL3_RANDOM_SIZE -
- challenge_len, challenge_len)) {
+ challenge_len, challenge_len)
+ /* Advertise only null compression. */
+ || !PACKET_buf_init(&compression, &null_compression, 1)) {
SSLerr(SSL_F_TLS_PROCESS_CLIENT_HELLO, ERR_R_INTERNAL_ERROR);
al = SSL_AD_INTERNAL_ERROR;
goto f_err;
}
- PACKET_null_init(&compression);
PACKET_null_init(&extensions);
} else {
/* Regular ClientHello. */
extensions = *pkt;
}
+ if (SSL_IS_DTLS(s)) {
+ /* Empty cookie was already handled above by returning early. */
+ if (SSL_get_options(s) & SSL_OP_COOKIE_EXCHANGE) {
+ if (s->ctx->app_verify_cookie_cb != NULL) {
+ if (s->ctx->app_verify_cookie_cb(s, PACKET_data(&cookie),
+ PACKET_remaining(&cookie)) == 0) {
+ al = SSL_AD_HANDSHAKE_FAILURE;
+ SSLerr(SSL_F_TLS_PROCESS_CLIENT_HELLO,
+ SSL_R_COOKIE_MISMATCH);
+ goto f_err;
+ /* else cookie verification succeeded */
+ }
+ /* default verification */
+ } else if (!PACKET_equal(&cookie, s->d1->cookie,
+ s->d1->cookie_len)) {
+ al = SSL_AD_HANDSHAKE_FAILURE;
+ SSLerr(SSL_F_TLS_PROCESS_CLIENT_HELLO, SSL_R_COOKIE_MISMATCH);
+ goto f_err;
+ }
+ s->d1->cookie_verified = 1;
+ }
+ if (s->method->version == DTLS_ANY_VERSION) {
+ protverr = ssl_choose_server_version(s);
+ if (protverr != 0) {
+ SSLerr(SSL_F_TLS_PROCESS_CLIENT_HELLO, protverr);
+ s->version = s->client_version;
+ al = SSL_AD_PROTOCOL_VERSION;
+ goto f_err;
+ }
+ }
+ }
+
s->hit = 0;
/*
}
}
- if (SSL_IS_DTLS(s)) {
- /* Empty cookie was already handled above by returning early. */
- if (SSL_get_options(s) & SSL_OP_COOKIE_EXCHANGE) {
- if (s->ctx->app_verify_cookie_cb != NULL) {
- if (s->ctx->app_verify_cookie_cb(s, PACKET_data(&cookie),
- PACKET_remaining(&cookie)) == 0) {
- al = SSL_AD_HANDSHAKE_FAILURE;
- SSLerr(SSL_F_TLS_PROCESS_CLIENT_HELLO,
- SSL_R_COOKIE_MISMATCH);
- goto f_err;
- /* else cookie verification succeeded */
- }
- /* default verification */
- } else if (!PACKET_equal(&cookie, s->d1->cookie,
- s->d1->cookie_len)) {
- al = SSL_AD_HANDSHAKE_FAILURE;
- SSLerr(SSL_F_TLS_PROCESS_CLIENT_HELLO, SSL_R_COOKIE_MISMATCH);
- goto f_err;
- }
- s->d1->cookie_verified = 1;
- }
- if (s->method->version == DTLS_ANY_VERSION) {
- protverr = ssl_choose_server_version(s);
- if (protverr != 0) {
- SSLerr(SSL_F_TLS_PROCESS_CLIENT_HELLO, protverr);
- s->version = s->client_version;
- al = SSL_AD_PROTOCOL_VERSION;
- goto f_err;
- }
- s->session->ssl_version = s->version;
- }
- }
-
if (ssl_bytes_to_cipher_list(s, &cipher_suites, &(ciphers),
is_v2_record, &al) == NULL) {
goto f_err;
SSLerr(SSL_F_TLS_PROCESS_CLIENT_HELLO, SSL_R_NO_COMPRESSION_SPECIFIED);
goto f_err;
}
-
+
/* TLS extensions */
if (s->version >= SSL3_VERSION) {
if (!ssl_parse_clienthello_tlsext(s, &extensions)) {
if (k >= complen) {
al = SSL_AD_ILLEGAL_PARAMETER;
SSLerr(SSL_F_TLS_PROCESS_CLIENT_HELLO,
- SSL_R_REQUIRED_COMPRESSSION_ALGORITHM_MISSING);
+ SSL_R_REQUIRED_COMPRESSION_ALGORITHM_MISSING);
goto f_err;
}
} else if (s->hit)
EVP_PKEY_free(pkdh);
pkdh = NULL;
- r[0] = dh->p;
- r[1] = dh->g;
- r[2] = dh->pub_key;
+ DH_get0_pqg(dh, &r[0], NULL, &r[1]);
+ DH_get0_key(dh, &r[2], NULL);
} else
#endif
#ifndef OPENSSL_NO_EC
MSG_PROCESS_RETURN tls_process_client_key_exchange(SSL *s, PACKET *pkt)
{
int al;
- unsigned int i;
unsigned long alg_k;
#ifndef OPENSSL_NO_RSA
RSA *rsa = NULL;
EVP_PKEY *ckey = NULL;
#endif
PACKET enc_premaster;
- const unsigned char *data;
unsigned char *rsa_decrypt = NULL;
alg_k = s->s3->tmp.new_cipher->algorithm_mkey;
if (alg_k & (SSL_kDHE | SSL_kDHEPSK)) {
EVP_PKEY *skey = NULL;
DH *cdh;
+ unsigned int i;
+ BIGNUM *pub_key;
+ const unsigned char *data;
if (!PACKET_get_net_2(pkt, &i)) {
if (alg_k & (SSL_kDHE | SSL_kDHEPSK)) {
goto err;
}
cdh = EVP_PKEY_get0_DH(ckey);
- cdh->pub_key = BN_bin2bn(data, i, NULL);
- if (cdh->pub_key == NULL) {
- SSLerr(SSL_F_TLS_PROCESS_CLIENT_KEY_EXCHANGE, SSL_R_BN_LIB);
+ pub_key = BN_bin2bn(data, i, NULL);
+
+ if (pub_key == NULL || !DH_set0_key(cdh, pub_key, NULL)) {
+ SSLerr(SSL_F_TLS_PROCESS_CLIENT_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR);
+ if (pub_key != NULL)
+ BN_free(pub_key);
goto err;
}
SSL_R_MISSING_TMP_ECDH_KEY);
goto f_err;
} else {
+ unsigned int i;
+ const unsigned char *data;
+
/*
* Get client's public key from encoded point in the
* ClientKeyExchange message.
#endif
#ifndef OPENSSL_NO_SRP
if (alg_k & SSL_kSRP) {
+ unsigned int i;
+ const unsigned char *data;
+
if (!PACKET_get_net_2(pkt, &i)
|| !PACKET_get_bytes(pkt, &data, i)) {
al = SSL_AD_DECODE_ERROR;
int Ttag, Tclass;
long Tlen;
long sess_key_len;
+ const unsigned char *data;
/* Get our certificate private key */
alg_a = s->s3->tmp.new_cipher->algorithm_auth;
{
EVP_PKEY *pkey = NULL;
const unsigned char *sig, *data;
+#ifndef OPENSSL_NO_GOST
unsigned char *gost_data = NULL;
+#endif
int al, ret = MSG_PROCESS_ERROR;
int type = 0, j;
unsigned int len;
BIO_free(s->s3->handshake_buffer);
s->s3->handshake_buffer = NULL;
EVP_MD_CTX_free(mctx);
+#ifndef OPENSSL_NO_GOST
OPENSSL_free(gost_data);
+#endif
return ret;
}
} else {
if (RAND_bytes(iv, 16) <= 0)
goto err;
- if (!EVP_EncryptInit_ex(ctx, EVP_aes_128_cbc(), NULL,
+ if (!EVP_EncryptInit_ex(ctx, EVP_aes_256_cbc(), NULL,
tctx->tlsext_tick_aes_key, iv))
goto err;
- if (!HMAC_Init_ex(hctx, tctx->tlsext_tick_hmac_key, 16,
+ if (!HMAC_Init_ex(hctx, tctx->tlsext_tick_hmac_key,
+ sizeof(tctx->tlsext_tick_hmac_key),
EVP_sha256(), NULL))
goto err;
- memcpy(key_name, tctx->tlsext_tick_key_name, 16);
+ memcpy(key_name, tctx->tlsext_tick_key_name,
+ sizeof(tctx->tlsext_tick_key_name));
}
/*
goto err;
}
s->s3->send_connection_binding = 1;
-#ifdef OPENSSL_RI_DEBUG
- fprintf(stderr, "SCSV received by server\n");
-#endif
continue;
}
projects / oweals / openssl.git / blobdiff