2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
5 * This package is an SSL implementation written
6 * by Eric Young (eay@cryptsoft.com).
7 * The implementation was written so as to conform with Netscapes SSL.
9 * This library is free for commercial and non-commercial use as long as
10 * the following conditions are aheared to. The following conditions
11 * apply to all code found in this distribution, be it the RC4, RSA,
12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
13 * included with this distribution is covered by the same copyright terms
14 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
16 * Copyright remains Eric Young's, and as such any Copyright notices in
17 * the code are not to be removed.
18 * If this package is used in a product, Eric Young should be given attribution
19 * as the author of the parts of the library used.
20 * This can be in the form of a textual message at program startup or
21 * in documentation (online or textual) provided with the package.
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
26 * 1. Redistributions of source code must retain the copyright
27 * notice, this list of conditions and the following disclaimer.
28 * 2. Redistributions in binary form must reproduce the above copyright
29 * notice, this list of conditions and the following disclaimer in the
30 * documentation and/or other materials provided with the distribution.
31 * 3. All advertising materials mentioning features or use of this software
32 * must display the following acknowledgement:
33 * "This product includes cryptographic software written by
34 * Eric Young (eay@cryptsoft.com)"
35 * The word 'cryptographic' can be left out if the rouines from the library
36 * being used are not cryptographic related :-).
37 * 4. If you include any Windows specific code (or a derivative thereof) from
38 * the apps directory (application code) you must include an acknowledgement:
39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
53 * The licence and distribution terms for any publically available version or
54 * derivative of this code cannot be changed. i.e. this code cannot simply be
55 * copied and put under another distribution licence
56 * [including the GNU Public Licence.]
60 #include <openssl/objects.h>
61 #include <openssl/evp.h>
62 #include <openssl/hmac.h>
63 #include <openssl/ocsp.h>
66 const char tls1_version_str[]="TLSv1" OPENSSL_VERSION_PTEXT;
68 #ifndef OPENSSL_NO_TLSEXT
69 static int tls_decrypt_ticket(SSL *s, const unsigned char *tick, int ticklen,
70 const unsigned char *sess_id, int sesslen,
74 SSL3_ENC_METHOD TLSv1_enc_data={
78 tls1_generate_master_secret,
79 tls1_change_cipher_state,
80 tls1_final_finish_mac,
81 TLS1_FINISH_MAC_LENGTH,
83 TLS_MD_CLIENT_FINISH_CONST,TLS_MD_CLIENT_FINISH_CONST_SIZE,
84 TLS_MD_SERVER_FINISH_CONST,TLS_MD_SERVER_FINISH_CONST_SIZE,
88 long tls1_default_timeout(void)
90 /* 2 hours, the 24 hours mentioned in the TLSv1 spec
91 * is way too long for http, the cache would over fill */
95 IMPLEMENT_tls1_meth_func(tlsv1_base_method,
96 ssl_undefined_function,
97 ssl_undefined_function,
102 if (!ssl3_new(s)) return(0);
103 s->method->ssl_clear(s);
107 void tls1_free(SSL *s)
112 void tls1_clear(SSL *s)
115 s->version=TLS1_VERSION;
119 long tls1_ctrl(SSL *s, int cmd, long larg, char *parg)
124 long tls1_callback_ctrl(SSL *s, int cmd, void *(*fp)())
130 #ifndef OPENSSL_NO_TLSEXT
131 unsigned char *ssl_add_clienthello_tlsext(SSL *s, unsigned char *p, unsigned char *limit)
134 unsigned char *ret = p;
136 /* don't add extensions for SSLv3 */
137 if (s->client_version == SSL3_VERSION)
142 if (ret>=limit) return NULL; /* this really never occurs, but ... */
144 if (s->tlsext_hostname != NULL)
146 /* Add TLS extension servername to the Client Hello message */
147 unsigned long size_str;
150 /* check for enough space.
151 4 for the servername type and entension length
152 2 for servernamelist length
153 1 for the hostname type
154 2 for hostname length
158 if ((lenmax = limit - ret - 9) < 0
159 || (size_str = strlen(s->tlsext_hostname)) > (unsigned long)lenmax)
162 /* extension type and length */
163 s2n(TLSEXT_TYPE_server_name,ret);
166 /* length of servername list */
169 /* hostname type, length and hostname */
170 *(ret++) = (unsigned char) TLSEXT_NAMETYPE_host_name;
172 memcpy(ret, s->tlsext_hostname, size_str);
177 /* Add the renegotiation option: TODOEKR switch */
181 if(!ssl_add_clienthello_renegotiate_ext(s, 0, &el, 0))
183 SSLerr(SSL_F_SSL_ADD_CLIENTHELLO_TLSEXT, ERR_R_INTERNAL_ERROR);
187 if((limit - p - 4 - el) < 0) return NULL;
189 s2n(TLSEXT_TYPE_renegotiate,ret);
192 if(!ssl_add_clienthello_renegotiate_ext(s, ret, &el, el))
194 SSLerr(SSL_F_SSL_ADD_CLIENTHELLO_TLSEXT, ERR_R_INTERNAL_ERROR);
202 if (!(SSL_get_options(s) & SSL_OP_NO_TICKET))
205 if (!s->new_session && s->session && s->session->tlsext_tick)
206 ticklen = s->session->tlsext_ticklen;
209 /* Check for enough room 2 for extension type, 2 for len
212 if (limit - ret - 4 - ticklen < 0)
214 s2n(TLSEXT_TYPE_session_ticket,ret);
218 memcpy(ret, s->session->tlsext_tick, ticklen);
223 if (s->tlsext_status_type == TLSEXT_STATUSTYPE_ocsp)
226 long extlen, idlen, itmp;
230 for (i = 0; i < sk_OCSP_RESPID_num(s->tlsext_ocsp_ids); i++)
232 id = sk_OCSP_RESPID_value(s->tlsext_ocsp_ids, i);
233 itmp = i2d_OCSP_RESPID(id, NULL);
239 if (s->tlsext_ocsp_exts)
241 extlen = i2d_X509_EXTENSIONS(s->tlsext_ocsp_exts, NULL);
248 if ((long)(limit - ret - 7 - extlen - idlen) < 0) return NULL;
249 s2n(TLSEXT_TYPE_status_request, ret);
250 if (extlen + idlen > 0xFFF0)
252 s2n(extlen + idlen + 5, ret);
253 *(ret++) = TLSEXT_STATUSTYPE_ocsp;
255 for (i = 0; i < sk_OCSP_RESPID_num(s->tlsext_ocsp_ids); i++)
257 /* save position of id len */
258 unsigned char *q = ret;
259 id = sk_OCSP_RESPID_value(s->tlsext_ocsp_ids, i);
260 /* skip over id len */
262 itmp = i2d_OCSP_RESPID(id, &ret);
268 i2d_X509_EXTENSIONS(s->tlsext_ocsp_exts, &ret);
271 if ((extdatalen = ret-p-2)== 0)
278 unsigned char *ssl_add_serverhello_tlsext(SSL *s, unsigned char *p, unsigned char *limit)
281 unsigned char *ret = p;
283 /* don't add extensions for SSLv3 */
284 if (s->version == SSL3_VERSION)
288 if (ret>=limit) return NULL; /* this really never occurs, but ... */
290 if (!s->hit && s->servername_done == 1 && s->session->tlsext_hostname != NULL)
292 if (limit - ret - 4 < 0) return NULL;
294 s2n(TLSEXT_TYPE_server_name,ret);
298 if(s->s3->send_connection_binding)
302 if(!ssl_add_serverhello_renegotiate_ext(s, 0, &el, 0))
304 SSLerr(SSL_F_SSL_ADD_CLIENTHELLO_TLSEXT, ERR_R_INTERNAL_ERROR);
308 if((limit - p - 4 - el) < 0) return NULL;
310 s2n(TLSEXT_TYPE_renegotiate,ret);
313 if(!ssl_add_serverhello_renegotiate_ext(s, ret, &el, el))
315 SSLerr(SSL_F_SSL_ADD_CLIENTHELLO_TLSEXT, ERR_R_INTERNAL_ERROR);
322 if (s->tlsext_ticket_expected
323 && !(SSL_get_options(s) & SSL_OP_NO_TICKET))
325 if (limit - ret - 4 < 0) return NULL;
326 s2n(TLSEXT_TYPE_session_ticket,ret);
330 if (s->tlsext_status_expected)
332 if ((long)(limit - ret - 4) < 0) return NULL;
333 s2n(TLSEXT_TYPE_status_request,ret);
337 if ((extdatalen = ret-p-2)== 0)
344 int ssl_parse_clienthello_tlsext(SSL *s, unsigned char **p, unsigned char *d, int n, int *al)
349 unsigned char *data = *p;
350 int renegotiate_seen = 0;
352 s->servername_done = 0;
353 s->tlsext_status_type = -1;
354 s->s3->send_connection_binding = 0;
359 && !(s->ctx->options & SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION))
361 /* We should always see one extension: the renegotiate extension */
362 *al = SSL_AD_ILLEGAL_PARAMETER; /* is this the right alert? */
369 if (data > (d+n-len))
372 while (data <= (d+n-4))
377 if (data+size > (d+n))
380 if (s->tlsext_debug_cb)
381 s->tlsext_debug_cb(s, 0, type, data, size,
382 s->tlsext_debug_arg);
383 /* The servername extension is treated as follows:
385 - Only the hostname type is supported with a maximum length of 255.
386 - The servername is rejected if too long or if it contains zeros,
387 in which case an fatal alert is generated.
388 - The servername field is maintained together with the session cache.
389 - When a session is resumed, the servername call back invoked in order
390 to allow the application to position itself to the right context.
391 - The servername is acknowledged if it is new for a session or when
392 it is identical to a previously used for the same session.
393 Applications can control the behaviour. They can at any time
394 set a 'desirable' servername for a new SSL object. This can be the
395 case for example with HTTPS when a Host: header field is received and
396 a renegotiation is requested. In this case, a possible servername
397 presented in the new client hello is only acknowledged if it matches
398 the value of the Host: field.
399 - Applications must use SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION
400 if they provide for changing an explicit servername context for the session,
401 i.e. when the session has been established with a servername extension.
402 - On session reconnect, the servername extension may be absent.
406 if (type == TLSEXT_TYPE_server_name)
408 unsigned char *sdata;
414 *al = SSL_AD_DECODE_ERROR;
421 *al = SSL_AD_DECODE_ERROR;
428 servname_type = *(sdata++);
434 *al = SSL_AD_DECODE_ERROR;
437 if (s->servername_done == 0)
438 switch (servname_type)
440 case TLSEXT_NAMETYPE_host_name:
441 if (s->session->tlsext_hostname == NULL)
443 if (len > TLSEXT_MAXLEN_host_name ||
444 ((s->session->tlsext_hostname = OPENSSL_malloc(len+1)) == NULL))
446 *al = TLS1_AD_UNRECOGNIZED_NAME;
449 memcpy(s->session->tlsext_hostname, sdata, len);
450 s->session->tlsext_hostname[len]='\0';
451 if (strlen(s->session->tlsext_hostname) != len) {
452 OPENSSL_free(s->session->tlsext_hostname);
453 s->session->tlsext_hostname = NULL;
454 *al = TLS1_AD_UNRECOGNIZED_NAME;
457 s->servername_done = 1;
461 s->servername_done = strlen(s->session->tlsext_hostname) == len
462 && strncmp(s->session->tlsext_hostname, (char *)sdata, len) == 0;
474 *al = SSL_AD_DECODE_ERROR;
479 else if (type == TLSEXT_TYPE_renegotiate)
481 if(!ssl_parse_clienthello_renegotiate_ext(s, data, size, al))
483 renegotiate_seen = 1;
485 else if (type == TLSEXT_TYPE_status_request
486 && s->ctx->tlsext_status_cb)
491 *al = SSL_AD_DECODE_ERROR;
495 s->tlsext_status_type = *data++;
497 if (s->tlsext_status_type == TLSEXT_STATUSTYPE_ocsp)
499 const unsigned char *sdata;
501 /* Read in responder_id_list */
506 *al = SSL_AD_DECODE_ERROR;
515 *al = SSL_AD_DECODE_ERROR;
522 *al = SSL_AD_DECODE_ERROR;
527 id = d2i_OCSP_RESPID(NULL,
531 *al = SSL_AD_DECODE_ERROR;
536 OCSP_RESPID_free(id);
537 *al = SSL_AD_DECODE_ERROR;
540 if (!s->tlsext_ocsp_ids
541 && !(s->tlsext_ocsp_ids =
542 sk_OCSP_RESPID_new_null()))
544 OCSP_RESPID_free(id);
545 *al = SSL_AD_INTERNAL_ERROR;
548 if (!sk_OCSP_RESPID_push(
549 s->tlsext_ocsp_ids, id))
551 OCSP_RESPID_free(id);
552 *al = SSL_AD_INTERNAL_ERROR;
557 /* Read in request_extensions */
562 *al = SSL_AD_DECODE_ERROR;
568 s->tlsext_ocsp_exts =
569 d2i_X509_EXTENSIONS(NULL,
571 if (!s->tlsext_ocsp_exts
572 || (data + dsize != sdata))
574 *al = SSL_AD_DECODE_ERROR;
579 /* We don't know what to do with any other type
583 s->tlsext_status_type = -1;
586 /* session ticket processed earlier */
591 if (s->new_session && !renegotiate_seen
592 && !(s->ctx->options & SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION))
594 *al = SSL_AD_ILLEGAL_PARAMETER; /* is this the right alert? */
602 int ssl_parse_serverhello_tlsext(SSL *s, unsigned char **p, unsigned char *d, int n, int *al)
607 unsigned char *data = *p;
608 int tlsext_servername = 0;
609 int renegotiate_seen = 0;
613 /* Because the client does not see any renegotiation during an
614 attack, we must enforce this on all server hellos, even the
616 if (!(s->ctx->options & SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION))
618 /* We should always see one extension: the renegotiate extension */
619 *al = SSL_AD_ILLEGAL_PARAMETER; /* is this the right alert? */
627 while(data <= (d+n-4))
632 if (data+size > (d+n))
635 if (s->tlsext_debug_cb)
636 s->tlsext_debug_cb(s, 1, type, data, size,
637 s->tlsext_debug_arg);
639 if (type == TLSEXT_TYPE_server_name)
641 if (s->tlsext_hostname == NULL || size > 0)
643 *al = TLS1_AD_UNRECOGNIZED_NAME;
646 tlsext_servername = 1;
648 else if (type == TLSEXT_TYPE_session_ticket)
650 if ((SSL_get_options(s) & SSL_OP_NO_TICKET)
653 *al = TLS1_AD_UNSUPPORTED_EXTENSION;
656 s->tlsext_ticket_expected = 1;
658 else if (type == TLSEXT_TYPE_status_request)
660 /* MUST be empty and only sent if we've requested
661 * a status request message.
663 if ((s->tlsext_status_type == -1) || (size > 0))
665 *al = TLS1_AD_UNSUPPORTED_EXTENSION;
668 /* Set flag to expect CertificateStatus message */
669 s->tlsext_status_expected = 1;
671 else if (type == TLSEXT_TYPE_renegotiate)
673 if(!ssl_parse_serverhello_renegotiate_ext(s, data, size, al))
675 renegotiate_seen = 1;
682 *al = SSL_AD_DECODE_ERROR;
686 if (!renegotiate_seen
687 && !(s->ctx->options & SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION))
689 *al = SSL_AD_ILLEGAL_PARAMETER; /* is this the right alert? */
693 if (!s->hit && tlsext_servername == 1)
695 if (s->tlsext_hostname)
697 if (s->session->tlsext_hostname == NULL)
699 s->session->tlsext_hostname = BUF_strdup(s->tlsext_hostname);
700 if (!s->session->tlsext_hostname)
702 *al = SSL_AD_UNRECOGNIZED_NAME;
708 *al = SSL_AD_DECODE_ERROR;
718 int ssl_check_clienthello_tlsext(SSL *s)
720 int ret=SSL_TLSEXT_ERR_NOACK;
721 int al = SSL_AD_UNRECOGNIZED_NAME;
723 if (s->ctx != NULL && s->ctx->tlsext_servername_callback != 0)
724 ret = s->ctx->tlsext_servername_callback(s, &al, s->ctx->tlsext_servername_arg);
725 else if (s->initial_ctx != NULL && s->initial_ctx->tlsext_servername_callback != 0)
726 ret = s->initial_ctx->tlsext_servername_callback(s, &al, s->initial_ctx->tlsext_servername_arg);
728 /* If status request then ask callback what to do.
729 * Note: this must be called after servername callbacks in case
730 * the certificate has changed.
732 if ((s->tlsext_status_type != -1) && s->ctx->tlsext_status_cb)
735 r = s->ctx->tlsext_status_cb(s, s->ctx->tlsext_status_arg);
738 /* We don't want to send a status request response */
739 case SSL_TLSEXT_ERR_NOACK:
740 s->tlsext_status_expected = 0;
742 /* status request response should be sent */
743 case SSL_TLSEXT_ERR_OK:
744 if (s->tlsext_ocsp_resp)
745 s->tlsext_status_expected = 1;
747 s->tlsext_status_expected = 0;
749 /* something bad happened */
750 case SSL_TLSEXT_ERR_ALERT_FATAL:
751 ret = SSL_TLSEXT_ERR_ALERT_FATAL;
752 al = SSL_AD_INTERNAL_ERROR;
757 s->tlsext_status_expected = 0;
761 case SSL_TLSEXT_ERR_ALERT_FATAL:
762 ssl3_send_alert(s,SSL3_AL_FATAL,al);
765 case SSL_TLSEXT_ERR_ALERT_WARNING:
766 ssl3_send_alert(s,SSL3_AL_WARNING,al);
769 case SSL_TLSEXT_ERR_NOACK:
770 s->servername_done=0;
776 int ssl_check_serverhello_tlsext(SSL *s)
778 int ret=SSL_TLSEXT_ERR_NOACK;
779 int al = SSL_AD_UNRECOGNIZED_NAME;
781 if (s->ctx != NULL && s->ctx->tlsext_servername_callback != 0)
782 ret = s->ctx->tlsext_servername_callback(s, &al, s->ctx->tlsext_servername_arg);
783 else if (s->initial_ctx != NULL && s->initial_ctx->tlsext_servername_callback != 0)
784 ret = s->initial_ctx->tlsext_servername_callback(s, &al, s->initial_ctx->tlsext_servername_arg);
786 /* If we've requested certificate status and we wont get one
789 if ((s->tlsext_status_type != -1) && !(s->tlsext_status_expected)
790 && s->ctx->tlsext_status_cb)
793 /* Set resp to NULL, resplen to -1 so callback knows
794 * there is no response.
796 if (s->tlsext_ocsp_resp)
798 OPENSSL_free(s->tlsext_ocsp_resp);
799 s->tlsext_ocsp_resp = NULL;
801 s->tlsext_ocsp_resplen = -1;
802 r = s->ctx->tlsext_status_cb(s, s->ctx->tlsext_status_arg);
805 al = SSL_AD_BAD_CERTIFICATE_STATUS_RESPONSE;
806 ret = SSL_TLSEXT_ERR_ALERT_FATAL;
810 al = SSL_AD_INTERNAL_ERROR;
811 ret = SSL_TLSEXT_ERR_ALERT_FATAL;
817 case SSL_TLSEXT_ERR_ALERT_FATAL:
818 ssl3_send_alert(s,SSL3_AL_FATAL,al);
821 case SSL_TLSEXT_ERR_ALERT_WARNING:
822 ssl3_send_alert(s,SSL3_AL_WARNING,al);
825 case SSL_TLSEXT_ERR_NOACK:
826 s->servername_done=0;
832 /* Since the server cache lookup is done early on in the processing of client
833 * hello and other operations depend on the result we need to handle any TLS
834 * session ticket extension at the same time.
837 int tls1_process_ticket(SSL *s, unsigned char *session_id, int len,
838 const unsigned char *limit, SSL_SESSION **ret)
840 /* Point after session ID in client hello */
841 const unsigned char *p = session_id + len;
844 /* If tickets disabled behave as if no ticket present
845 * to permit stateful resumption.
847 if (SSL_get_options(s) & SSL_OP_NO_TICKET)
850 if ((s->version <= SSL3_VERSION) || !limit)
854 /* Skip past DTLS cookie */
855 if (s->version == DTLS1_VERSION || s->version == DTLS1_BAD_VER)
862 /* Skip past cipher list */
867 /* Skip past compression algorithm list */
872 /* Now at start of extensions */
873 if ((p + 2) >= limit)
876 while ((p + 4) <= limit)
878 unsigned short type, size;
881 if (p + size > limit)
883 if (type == TLSEXT_TYPE_session_ticket)
885 /* If zero length note client will accept a ticket
886 * and indicate cache miss to trigger full handshake
890 s->tlsext_ticket_expected = 1;
891 return 0; /* Cache miss */
893 return tls_decrypt_ticket(s, p, size, session_id, len,
901 static int tls_decrypt_ticket(SSL *s, const unsigned char *etick, int eticklen,
902 const unsigned char *sess_id, int sesslen,
907 const unsigned char *p;
908 int slen, mlen, renew_ticket = 0;
909 unsigned char tick_hmac[EVP_MAX_MD_SIZE];
912 SSL_CTX *tctx = s->initial_ctx;
913 /* Need at least keyname + iv + some encrypted data */
916 /* Initialize session ticket encryption and HMAC contexts */
917 HMAC_CTX_init(&hctx);
918 EVP_CIPHER_CTX_init(&ctx);
919 if (tctx->tlsext_ticket_key_cb)
921 unsigned char *nctick = (unsigned char *)etick;
922 int rv = tctx->tlsext_ticket_key_cb(s, nctick, nctick + 16,
933 /* Check key name matches */
934 if (memcmp(etick, tctx->tlsext_tick_key_name, 16))
936 HMAC_Init_ex(&hctx, tctx->tlsext_tick_hmac_key, 16,
937 tlsext_tick_md(), NULL);
938 EVP_DecryptInit_ex(&ctx, EVP_aes_128_cbc(), NULL,
939 tctx->tlsext_tick_aes_key, etick + 16);
941 /* Attempt to process session ticket, first conduct sanity and
942 * integrity checks on ticket.
944 mlen = HMAC_size(&hctx);
946 /* Check HMAC of encrypted ticket */
947 HMAC_Update(&hctx, etick, eticklen);
948 HMAC_Final(&hctx, tick_hmac, NULL);
949 HMAC_CTX_cleanup(&hctx);
950 if (memcmp(tick_hmac, etick + eticklen, mlen))
952 /* Attempt to decrypt session data */
953 /* Move p after IV to start of encrypted ticket, update length */
954 p = etick + 16 + EVP_CIPHER_CTX_iv_length(&ctx);
955 eticklen -= 16 + EVP_CIPHER_CTX_iv_length(&ctx);
956 sdec = OPENSSL_malloc(eticklen);
959 EVP_CIPHER_CTX_cleanup(&ctx);
962 EVP_DecryptUpdate(&ctx, sdec, &slen, p, eticklen);
963 if (EVP_DecryptFinal(&ctx, sdec + slen, &mlen) <= 0)
966 EVP_CIPHER_CTX_cleanup(&ctx);
969 sess = d2i_SSL_SESSION(NULL, &p, slen);
973 /* The session ID if non-empty is used by some clients to
974 * detect that the ticket has been accepted. So we copy it to
975 * the session structure. If it is empty set length to zero
976 * as required by standard.
979 memcpy(sess->session_id, sess_id, sesslen);
980 sess->session_id_length = sesslen;
982 s->tlsext_ticket_expected = renew_ticket;
985 /* If session decrypt failure indicate a cache miss and set state to
989 s->tlsext_ticket_expected = 1;