#endif
}
+static int tls_process_cke_srp(SSL *s, PACKET *pkt, int *al)
+{
+#ifndef OPENSSL_NO_SRP
+ 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;
+ SSLerr(SSL_F_TLS_PROCESS_CLIENT_KEY_EXCHANGE, SSL_R_BAD_SRP_A_LENGTH);
+ return 0;
+ }
+ if ((s->srp_ctx.A = BN_bin2bn(data, i, NULL)) == NULL) {
+ SSLerr(SSL_F_TLS_PROCESS_CLIENT_KEY_EXCHANGE, ERR_R_BN_LIB);
+ return 0;
+ }
+ if (BN_ucmp(s->srp_ctx.A, s->srp_ctx.N) >= 0
+ || BN_is_zero(s->srp_ctx.A)) {
+ *al = SSL_AD_ILLEGAL_PARAMETER;
+ SSLerr(SSL_F_TLS_PROCESS_CLIENT_KEY_EXCHANGE,
+ SSL_R_BAD_SRP_PARAMETERS);
+ return 0;
+ }
+ OPENSSL_free(s->session->srp_username);
+ s->session->srp_username = OPENSSL_strdup(s->srp_ctx.login);
+ if (s->session->srp_username == NULL) {
+ SSLerr(SSL_F_TLS_PROCESS_CLIENT_KEY_EXCHANGE, ERR_R_MALLOC_FAILURE);
+ return 0;
+ }
+
+ if (!srp_generate_server_master_secret(s)) {
+ SSLerr(SSL_F_TLS_PROCESS_CLIENT_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR);
+ return 0;
+ }
+
+ return 1;
+#else
+ /* Should never happen */
+ *al = SSL_AD_INTERNAL_ERROR;
+ SSLerr(SSL_F_TLS_PROCESS_CLIENT_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR);
+ return 0;
+#endif
+}
+
+static int tls_process_cke_gost(SSL *s, PACKET *pkt, int *al)
+{
+#ifndef OPENSSL_NO_GOST
+ EVP_PKEY_CTX *pkey_ctx;
+ EVP_PKEY *client_pub_pkey = NULL, *pk = NULL;
+ unsigned char premaster_secret[32];
+ const unsigned char *start;
+ size_t outlen = 32, inlen;
+ unsigned long alg_a;
+ int Ttag, Tclass;
+ long Tlen;
+ long sess_key_len;
+ const unsigned char *data;
+ int ret = 0;
+
+ /* Get our certificate private key */
+ alg_a = s->s3->tmp.new_cipher->algorithm_auth;
+ if (alg_a & SSL_aGOST12) {
+ /*
+ * New GOST ciphersuites have SSL_aGOST01 bit too
+ */
+ pk = s->cert->pkeys[SSL_PKEY_GOST12_512].privatekey;
+ if (pk == NULL) {
+ pk = s->cert->pkeys[SSL_PKEY_GOST12_256].privatekey;
+ }
+ if (pk == NULL) {
+ pk = s->cert->pkeys[SSL_PKEY_GOST01].privatekey;
+ }
+ } else if (alg_a & SSL_aGOST01) {
+ pk = s->cert->pkeys[SSL_PKEY_GOST01].privatekey;
+ }
+
+ pkey_ctx = EVP_PKEY_CTX_new(pk, NULL);
+ if (pkey_ctx == NULL) {
+ *al = SSL_AD_INTERNAL_ERROR;
+ SSLerr(SSL_F_TLS_PROCESS_CLIENT_KEY_EXCHANGE, ERR_R_MALLOC_FAILURE);
+ return 0;
+ }
+ if (EVP_PKEY_decrypt_init(pkey_ctx) <= 0) {
+ *al = SSL_AD_INTERNAL_ERROR;
+ SSLerr(SSL_F_TLS_PROCESS_CLIENT_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR);
+ return 0;
+ }
+ /*
+ * If client certificate is present and is of the same type, maybe
+ * use it for key exchange. Don't mind errors from
+ * EVP_PKEY_derive_set_peer, because it is completely valid to use a
+ * client certificate for authorization only.
+ */
+ client_pub_pkey = X509_get0_pubkey(s->session->peer);
+ if (client_pub_pkey) {
+ if (EVP_PKEY_derive_set_peer(pkey_ctx, client_pub_pkey) <= 0)
+ ERR_clear_error();
+ }
+ /* Decrypt session key */
+ sess_key_len = PACKET_remaining(pkt);
+ if (!PACKET_get_bytes(pkt, &data, sess_key_len)) {
+ *al = SSL_AD_INTERNAL_ERROR;
+ SSLerr(SSL_F_TLS_PROCESS_CLIENT_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR);
+ goto err;
+ }
+ if (ASN1_get_object ((const unsigned char **)&data, &Tlen, &Ttag,
+ &Tclass, sess_key_len) != V_ASN1_CONSTRUCTED
+ || Ttag != V_ASN1_SEQUENCE
+ || Tclass != V_ASN1_UNIVERSAL) {
+ *al = SSL_AD_DECODE_ERROR;
+ SSLerr(SSL_F_TLS_PROCESS_CLIENT_KEY_EXCHANGE,
+ SSL_R_DECRYPTION_FAILED);
+ goto err;
+ }
+ start = data;
+ inlen = Tlen;
+ if (EVP_PKEY_decrypt
+ (pkey_ctx, premaster_secret, &outlen, start, inlen) <= 0) {
+ *al = SSL_AD_DECODE_ERROR;
+ SSLerr(SSL_F_TLS_PROCESS_CLIENT_KEY_EXCHANGE,
+ SSL_R_DECRYPTION_FAILED);
+ goto err;
+ }
+ /* Generate master secret */
+ if (!ssl_generate_master_secret(s, premaster_secret,
+ sizeof(premaster_secret), 0)) {
+ *al = SSL_AD_INTERNAL_ERROR;
+ SSLerr(SSL_F_TLS_PROCESS_CLIENT_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR);
+ goto err;
+ }
+ /* Check if pubkey from client certificate was used */
+ if (EVP_PKEY_CTX_ctrl
+ (pkey_ctx, -1, -1, EVP_PKEY_CTRL_PEER_KEY, 2, NULL) > 0)
+ s->statem.no_cert_verify = 1;
+
+ ret = 1;
+ err:
+ EVP_PKEY_CTX_free(pkey_ctx);
+ return ret;
+#else
+ /* Should never happen */
+ *al = SSL_AD_INTERNAL_ERROR;
+ SSLerr(SSL_F_TLS_PROCESS_CLIENT_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR);
+ return 0;
+#endif
+}
+
MSG_PROCESS_RETURN tls_process_client_key_exchange(SSL *s, PACKET *pkt)
{
int al = -1;
} else if (alg_k & (SSL_kECDHE | SSL_kECDHEPSK)) {
if (!tls_process_cke_ecdhe(s, pkt, &al))
goto err;
- } else
-#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;
- SSLerr(SSL_F_TLS_PROCESS_CLIENT_KEY_EXCHANGE, SSL_R_BAD_SRP_A_LENGTH);
- goto f_err;
- }
- if ((s->srp_ctx.A = BN_bin2bn(data, i, NULL)) == NULL) {
- SSLerr(SSL_F_TLS_PROCESS_CLIENT_KEY_EXCHANGE, ERR_R_BN_LIB);
- goto err;
- }
- if (BN_ucmp(s->srp_ctx.A, s->srp_ctx.N) >= 0
- || BN_is_zero(s->srp_ctx.A)) {
- al = SSL_AD_ILLEGAL_PARAMETER;
- SSLerr(SSL_F_TLS_PROCESS_CLIENT_KEY_EXCHANGE,
- SSL_R_BAD_SRP_PARAMETERS);
- goto f_err;
- }
- OPENSSL_free(s->session->srp_username);
- s->session->srp_username = OPENSSL_strdup(s->srp_ctx.login);
- if (s->session->srp_username == NULL) {
- SSLerr(SSL_F_TLS_PROCESS_CLIENT_KEY_EXCHANGE, ERR_R_MALLOC_FAILURE);
+ } else if (alg_k & SSL_kSRP) {
+ if (!tls_process_cke_srp(s, pkt, &al))
goto err;
- }
-
- if (!srp_generate_server_master_secret(s)) {
- SSLerr(SSL_F_TLS_PROCESS_CLIENT_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR);
+ } else if (alg_k & SSL_kGOST) {
+ if (!tls_process_cke_gost(s, pkt, &al))
goto err;
- }
- } else
-#endif /* OPENSSL_NO_SRP */
-#ifndef OPENSSL_NO_GOST
- if (alg_k & SSL_kGOST) {
- EVP_PKEY_CTX *pkey_ctx;
- EVP_PKEY *client_pub_pkey = NULL, *pk = NULL;
- unsigned char premaster_secret[32];
- const unsigned char *start;
- size_t outlen = 32, inlen;
- unsigned long alg_a;
- 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;
- if (alg_a & SSL_aGOST12) {
- /*
- * New GOST ciphersuites have SSL_aGOST01 bit too
- */
- pk = s->cert->pkeys[SSL_PKEY_GOST12_512].privatekey;
- if (pk == NULL) {
- pk = s->cert->pkeys[SSL_PKEY_GOST12_256].privatekey;
- }
- if (pk == NULL) {
- pk = s->cert->pkeys[SSL_PKEY_GOST01].privatekey;
- }
- } else if (alg_a & SSL_aGOST01) {
- pk = s->cert->pkeys[SSL_PKEY_GOST01].privatekey;
- }
-
- pkey_ctx = EVP_PKEY_CTX_new(pk, NULL);
- if (pkey_ctx == NULL) {
- al = SSL_AD_INTERNAL_ERROR;
- SSLerr(SSL_F_TLS_PROCESS_CLIENT_KEY_EXCHANGE, ERR_R_MALLOC_FAILURE);
- goto f_err;
- }
- if (EVP_PKEY_decrypt_init(pkey_ctx) <= 0) {
- al = SSL_AD_INTERNAL_ERROR;
- SSLerr(SSL_F_TLS_PROCESS_CLIENT_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR);
- goto f_err;
- }
- /*
- * If client certificate is present and is of the same type, maybe
- * use it for key exchange. Don't mind errors from
- * EVP_PKEY_derive_set_peer, because it is completely valid to use a
- * client certificate for authorization only.
- */
- client_pub_pkey = X509_get0_pubkey(s->session->peer);
- if (client_pub_pkey) {
- if (EVP_PKEY_derive_set_peer(pkey_ctx, client_pub_pkey) <= 0)
- ERR_clear_error();
- }
- /* Decrypt session key */
- sess_key_len = PACKET_remaining(pkt);
- if (!PACKET_get_bytes(pkt, &data, sess_key_len)) {
- al = SSL_AD_INTERNAL_ERROR;
- SSLerr(SSL_F_TLS_PROCESS_CLIENT_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR);
- goto gerr;
- }
- if (ASN1_get_object ((const unsigned char **)&data, &Tlen, &Ttag,
- &Tclass, sess_key_len) != V_ASN1_CONSTRUCTED
- || Ttag != V_ASN1_SEQUENCE
- || Tclass != V_ASN1_UNIVERSAL) {
- al = SSL_AD_DECODE_ERROR;
- SSLerr(SSL_F_TLS_PROCESS_CLIENT_KEY_EXCHANGE,
- SSL_R_DECRYPTION_FAILED);
- goto gerr;
- }
- start = data;
- inlen = Tlen;
- if (EVP_PKEY_decrypt
- (pkey_ctx, premaster_secret, &outlen, start, inlen) <= 0) {
- al = SSL_AD_DECODE_ERROR;
- SSLerr(SSL_F_TLS_PROCESS_CLIENT_KEY_EXCHANGE,
- SSL_R_DECRYPTION_FAILED);
- goto gerr;
- }
- /* Generate master secret */
- if (!ssl_generate_master_secret(s, premaster_secret,
- sizeof(premaster_secret), 0)) {
- al = SSL_AD_INTERNAL_ERROR;
- SSLerr(SSL_F_TLS_PROCESS_CLIENT_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR);
- goto gerr;
- }
- /* Check if pubkey from client certificate was used */
- if (EVP_PKEY_CTX_ctrl
- (pkey_ctx, -1, -1, EVP_PKEY_CTRL_PEER_KEY, 2, NULL) > 0)
- s->statem.no_cert_verify = 1;
-
- EVP_PKEY_CTX_free(pkey_ctx);
- return MSG_PROCESS_CONTINUE_PROCESSING;
- gerr:
- EVP_PKEY_CTX_free(pkey_ctx);
- goto f_err;
- } else
-#endif
- {
+ } else {
al = SSL_AD_HANDSHAKE_FAILURE;
SSLerr(SSL_F_TLS_PROCESS_CLIENT_KEY_EXCHANGE, SSL_R_UNKNOWN_CIPHER_TYPE);
goto f_err;
projects / openssl.git / blobdiff