+#ifndef OPENSSL_NO_GOST
+ if (PACKET_remaining(pkt) == 64
+ && EVP_PKEY_id(pkey) == NID_id_GostR3410_2001) {
+ len = 64;
+ } else
+#endif
+ {
+ if (SSL_USE_SIGALGS(s)) {
+ int rv;
+ unsigned int sigalg;
+
+ if (!PACKET_get_net_2(pkt, &sigalg)) {
+ al = SSL_AD_DECODE_ERROR;
+ goto f_err;
+ }
+ rv = tls12_check_peer_sigalg(&md, s, sigalg, pkey);
+ if (rv == -1) {
+ goto f_err;
+ } else if (rv == 0) {
+ al = SSL_AD_DECODE_ERROR;
+ goto f_err;
+ }
+ ispss = SIGID_IS_PSS(sigalg);
+#ifdef SSL_DEBUG
+ fprintf(stderr, "USING TLSv1.2 HASH %s\n", EVP_MD_name(md));
+#endif
+ } else {
+ /* Use default digest for this key type */
+ int idx = ssl_cert_type(NULL, pkey);
+ if (idx >= 0)
+ md = s->s3->tmp.md[idx];
+ if (md == NULL) {
+ al = SSL_AD_INTERNAL_ERROR;
+ goto f_err;
+ }
+ }
+
+ if (!PACKET_get_net_2(pkt, &len)) {
+ SSLerr(SSL_F_TLS_PROCESS_CERT_VERIFY, SSL_R_LENGTH_MISMATCH);
+ al = SSL_AD_DECODE_ERROR;
+ goto f_err;
+ }
+ }
+ j = EVP_PKEY_size(pkey);
+ if (((int)len > j) || ((int)PACKET_remaining(pkt) > j)
+ || (PACKET_remaining(pkt) == 0)) {
+ SSLerr(SSL_F_TLS_PROCESS_CERT_VERIFY, SSL_R_WRONG_SIGNATURE_SIZE);
+ al = SSL_AD_DECODE_ERROR;
+ goto f_err;
+ }
+ if (!PACKET_get_bytes(pkt, &data, len)) {
+ SSLerr(SSL_F_TLS_PROCESS_CERT_VERIFY, SSL_R_LENGTH_MISMATCH);
+ al = SSL_AD_DECODE_ERROR;
+ goto f_err;
+ }
+
+ if (!get_cert_verify_tbs_data(s, tls13tbs, &hdata, &hdatalen)) {
+ SSLerr(SSL_F_TLS_PROCESS_CERT_VERIFY, ERR_R_INTERNAL_ERROR);
+ goto f_err;
+ }
+
+#ifdef SSL_DEBUG
+ fprintf(stderr, "Using client verify alg %s\n", EVP_MD_name(md));
+#endif
+ if (EVP_DigestVerifyInit(mctx, &pctx, md, NULL, pkey) <= 0
+ || EVP_DigestVerifyUpdate(mctx, hdata, hdatalen) <= 0) {
+ SSLerr(SSL_F_TLS_PROCESS_CERT_VERIFY, ERR_R_EVP_LIB);
+ goto f_err;
+ }
+#ifndef OPENSSL_NO_GOST
+ {
+ if (pktype == NID_id_GostR3410_2001
+ || pktype == NID_id_GostR3410_2012_256
+ || pktype == NID_id_GostR3410_2012_512) {
+ if ((gost_data = OPENSSL_malloc(len)) == NULL) {
+ SSLerr(SSL_F_TLS_PROCESS_CERT_VERIFY, ERR_R_MALLOC_FAILURE);
+ goto f_err;
+ }
+ BUF_reverse(gost_data, data, len);
+ data = gost_data;
+ }
+ }
+#endif
+
+ if (ispss) {
+ if (EVP_PKEY_CTX_set_rsa_padding(pctx, RSA_PKCS1_PSS_PADDING) <= 0
+ /* -1 here means set saltlen to the digest len */
+ || EVP_PKEY_CTX_set_rsa_pss_saltlen(pctx, -1) <= 0) {
+ SSLerr(SSL_F_TLS_PROCESS_CERT_VERIFY, ERR_R_EVP_LIB);
+ goto f_err;
+ }
+ } else if (s->version == SSL3_VERSION
+ && !EVP_MD_CTX_ctrl(mctx, EVP_CTRL_SSL3_MASTER_SECRET,
+ (int)s->session->master_key_length,
+ s->session->master_key)) {
+ SSLerr(SSL_F_TLS_PROCESS_CERT_VERIFY, ERR_R_EVP_LIB);
+ goto f_err;
+ }
+
+ if (EVP_DigestVerifyFinal(mctx, data, len) <= 0) {
+ al = SSL_AD_DECRYPT_ERROR;
+ SSLerr(SSL_F_TLS_PROCESS_CERT_VERIFY, SSL_R_BAD_SIGNATURE);
+ goto f_err;
+ }
+
+ if (SSL_IS_TLS13(s))
+ ret = MSG_PROCESS_CONTINUE_READING;
+ else
+ ret = MSG_PROCESS_CONTINUE_PROCESSING;
+ if (0) {
+ f_err:
+ ssl3_send_alert(s, SSL3_AL_FATAL, al);
+ ossl_statem_set_error(s);
+ }
+ 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;
+}
+
+int tls_construct_finished(SSL *s, WPACKET *pkt)
+{
+ size_t finish_md_len;
+ const char *sender;
+ size_t slen;
+
+ if (s->server) {
+ sender = s->method->ssl3_enc->server_finished_label;
+ slen = s->method->ssl3_enc->server_finished_label_len;