5 SSL - OpenSSL SSL/TLS library
9 The OpenSSL B<ssl> library implements the Secure Sockets Layer (SSL v2/v3) and
10 Transport Layer Security (TLS v1) protocols. It provides a rich API which is
13 Then an B<SSL_CTX> object is created as a framework to establish
14 TLS/SSL enabled connections (see L<SSL_CTX_new(3)>).
15 Various options regarding certificates, algorithms etc. can be set
18 When a network connection has been created, it can be assigned to an
19 B<SSL> object. After the B<SSL> object has been created using
20 L<SSL_new(3)>, L<SSL_set_fd(3)> or
21 L<SSL_set_bio(3)> can be used to associate the network
22 connection with the object.
24 Then the TLS/SSL handshake is performed using
25 L<SSL_accept(3)> or L<SSL_connect(3)>
27 L<SSL_read(3)> and L<SSL_write(3)> are used
28 to read and write data on the TLS/SSL connection.
29 L<SSL_shutdown(3)> can be used to shut down the
32 =head1 DATA STRUCTURES
34 Currently the OpenSSL B<ssl> library functions deals with the following data
39 =item B<SSL_METHOD> (SSL Method)
41 That's a dispatch structure describing the internal B<ssl> library
42 methods/functions which implement the various protocol versions (SSLv3
43 TLSv1, ...). It's needed to create an B<SSL_CTX>.
45 =item B<SSL_CIPHER> (SSL Cipher)
47 This structure holds the algorithm information for a particular cipher which
48 are a core part of the SSL/TLS protocol. The available ciphers are configured
49 on a B<SSL_CTX> basis and the actually used ones are then part of the
52 =item B<SSL_CTX> (SSL Context)
54 That's the global context structure which is created by a server or client
55 once per program life-time and which holds mainly default values for the
56 B<SSL> structures which are later created for the connections.
58 =item B<SSL_SESSION> (SSL Session)
60 This is a structure containing the current TLS/SSL session details for a
61 connection: B<SSL_CIPHER>s, client and server certificates, keys, etc.
63 =item B<SSL> (SSL Connection)
65 That's the main SSL/TLS structure which is created by a server or client per
66 established connection. This actually is the core structure in the SSL API.
67 Under run-time the application usually deals with this structure which has
68 links to mostly all other structures.
75 Currently the OpenSSL B<ssl> library provides the following C header files
76 containing the prototypes for the data structures and functions:
82 That's the common header file for the SSL/TLS API. Include it into your
83 program to make the API of the B<ssl> library available. It internally
84 includes both more private SSL headers and headers from the B<crypto> library.
85 Whenever you need hard-core details on the internals of the SSL API, look
86 inside this header file.
90 Unused. Present for backwards compatibility only.
94 That's the sub header file dealing with the SSLv3 protocol only.
95 I<Usually you don't have to include it explicitly because
96 it's already included by ssl.h>.
100 That's the sub header file dealing with the TLSv1 protocol only.
101 I<Usually you don't have to include it explicitly because
102 it's already included by ssl.h>.
108 Currently the OpenSSL B<ssl> library exports 214 API functions.
109 They are documented in the following:
111 =head2 Dealing with Protocol Methods
113 Here we document the various API functions which deal with the SSL/TLS
114 protocol methods defined in B<SSL_METHOD> structures.
118 =item const SSL_METHOD *B<TLS_method>(void);
120 Constructor for the I<version-flexible> SSL_METHOD structure for clients,
122 See L<SSL_CTX_new(3)> for details.
124 =item const SSL_METHOD *B<TLS_client_method>(void);
126 Constructor for the I<version-flexible> SSL_METHOD structure for clients.
128 =item const SSL_METHOD *B<TLS_server_method>(void);
130 Constructor for the I<version-flexible> SSL_METHOD structure for servers.
132 =item const SSL_METHOD *B<TLSv1_2_method>(void);
134 Constructor for the TLSv1.2 SSL_METHOD structure for clients, servers or both.
136 =item const SSL_METHOD *B<TLSv1_2_client_method>(void);
138 Constructor for the TLSv1.2 SSL_METHOD structure for clients.
140 =item const SSL_METHOD *B<TLSv1_2_server_method>(void);
142 Constructor for the TLSv1.2 SSL_METHOD structure for servers.
144 =item const SSL_METHOD *B<TLSv1_1_method>(void);
146 Constructor for the TLSv1.1 SSL_METHOD structure for clients, servers or both.
148 =item const SSL_METHOD *B<TLSv1_1_client_method>(void);
150 Constructor for the TLSv1.1 SSL_METHOD structure for clients.
152 =item const SSL_METHOD *B<TLSv1_1_server_method>(void);
154 Constructor for the TLSv1.1 SSL_METHOD structure for servers.
156 =item const SSL_METHOD *B<TLSv1_method>(void);
158 Constructor for the TLSv1 SSL_METHOD structure for clients, servers or both.
160 =item const SSL_METHOD *B<TLSv1_client_method>(void);
162 Constructor for the TLSv1 SSL_METHOD structure for clients.
164 =item const SSL_METHOD *B<TLSv1_server_method>(void);
166 Constructor for the TLSv1 SSL_METHOD structure for servers.
168 =item const SSL_METHOD *B<SSLv3_method>(void);
170 Constructor for the SSLv3 SSL_METHOD structure for clients, servers or both.
172 =item const SSL_METHOD *B<SSLv3_client_method>(void);
174 Constructor for the SSLv3 SSL_METHOD structure for clients.
176 =item const SSL_METHOD *B<SSLv3_server_method>(void);
178 Constructor for the SSLv3 SSL_METHOD structure for servers.
182 =head2 Dealing with Ciphers
184 Here we document the various API functions which deal with the SSL/TLS
185 ciphers defined in B<SSL_CIPHER> structures.
189 =item char *B<SSL_CIPHER_description>(SSL_CIPHER *cipher, char *buf, int len);
191 Write a string to I<buf> (with a maximum size of I<len>) containing a human
192 readable description of I<cipher>. Returns I<buf>.
194 =item int B<SSL_CIPHER_get_bits>(SSL_CIPHER *cipher, int *alg_bits);
196 Determine the number of bits in I<cipher>. Because of export crippled ciphers
197 there are two bits: The bits the algorithm supports in general (stored to
198 I<alg_bits>) and the bits which are actually used (the return value).
200 =item const char *B<SSL_CIPHER_get_name>(SSL_CIPHER *cipher);
202 Return the internal name of I<cipher> as a string. These are the various
203 strings defined by the I<SSL3_TXT_xxx> and I<TLS1_TXT_xxx>
204 definitions in the header files.
206 =item const char *B<SSL_CIPHER_get_version>(SSL_CIPHER *cipher);
208 Returns a string like "C<SSLv3>" or "C<TLSv1.2>" which indicates the
209 SSL/TLS protocol version to which I<cipher> belongs (i.e. where it was defined
210 in the specification the first time).
214 =head2 Dealing with Protocol Contexts
216 Here we document the various API functions which deal with the SSL/TLS
217 protocol context defined in the B<SSL_CTX> structure.
221 =item int B<SSL_CTX_add_client_CA>(SSL_CTX *ctx, X509 *x);
223 =item long B<SSL_CTX_add_extra_chain_cert>(SSL_CTX *ctx, X509 *x509);
225 =item int B<SSL_CTX_add_session>(SSL_CTX *ctx, SSL_SESSION *c);
227 =item int B<SSL_CTX_check_private_key>(const SSL_CTX *ctx);
229 =item long B<SSL_CTX_ctrl>(SSL_CTX *ctx, int cmd, long larg, char *parg);
231 =item void B<SSL_CTX_flush_sessions>(SSL_CTX *s, long t);
233 =item void B<SSL_CTX_free>(SSL_CTX *a);
235 =item char *B<SSL_CTX_get_app_data>(SSL_CTX *ctx);
237 =item X509_STORE *B<SSL_CTX_get_cert_store>(SSL_CTX *ctx);
239 =item STACK *B<SSL_CTX_get_ciphers>(const SSL_CTX *ctx);
241 =item STACK *B<SSL_CTX_get_client_CA_list>(const SSL_CTX *ctx);
243 =item int (*B<SSL_CTX_get_client_cert_cb>(SSL_CTX *ctx))(SSL *ssl, X509 **x509, EVP_PKEY **pkey);
245 =item void B<SSL_CTX_get_default_read_ahead>(SSL_CTX *ctx);
247 =item char *B<SSL_CTX_get_ex_data>(const SSL_CTX *s, int idx);
249 =item int B<SSL_CTX_get_ex_new_index>(long argl, char *argp, int (*new_func);(void), int (*dup_func)(void), void (*free_func)(void))
251 =item void (*B<SSL_CTX_get_info_callback>(SSL_CTX *ctx))(SSL *ssl, int cb, int ret);
253 =item int B<SSL_CTX_get_quiet_shutdown>(const SSL_CTX *ctx);
255 =item void B<SSL_CTX_get_read_ahead>(SSL_CTX *ctx);
257 =item int B<SSL_CTX_get_session_cache_mode>(SSL_CTX *ctx);
259 =item long B<SSL_CTX_get_timeout>(const SSL_CTX *ctx);
261 =item int (*B<SSL_CTX_get_verify_callback>(const SSL_CTX *ctx))(int ok, X509_STORE_CTX *ctx);
263 =item int B<SSL_CTX_get_verify_mode>(SSL_CTX *ctx);
265 =item int B<SSL_CTX_load_verify_locations>(SSL_CTX *ctx, const char *CAfile, const char *CApath);
267 =item long B<SSL_CTX_need_tmp_RSA>(SSL_CTX *ctx);
269 =item SSL_CTX *B<SSL_CTX_new>(const SSL_METHOD *meth);
271 =item int SSL_CTX_up_ref(SSL_CTX *ctx);
273 =item int B<SSL_CTX_remove_session>(SSL_CTX *ctx, SSL_SESSION *c);
275 =item int B<SSL_CTX_sess_accept>(SSL_CTX *ctx);
277 =item int B<SSL_CTX_sess_accept_good>(SSL_CTX *ctx);
279 =item int B<SSL_CTX_sess_accept_renegotiate>(SSL_CTX *ctx);
281 =item int B<SSL_CTX_sess_cache_full>(SSL_CTX *ctx);
283 =item int B<SSL_CTX_sess_cb_hits>(SSL_CTX *ctx);
285 =item int B<SSL_CTX_sess_connect>(SSL_CTX *ctx);
287 =item int B<SSL_CTX_sess_connect_good>(SSL_CTX *ctx);
289 =item int B<SSL_CTX_sess_connect_renegotiate>(SSL_CTX *ctx);
291 =item int B<SSL_CTX_sess_get_cache_size>(SSL_CTX *ctx);
293 =item SSL_SESSION *(*B<SSL_CTX_sess_get_get_cb>(SSL_CTX *ctx))(SSL *ssl, unsigned char *data, int len, int *copy);
295 =item int (*B<SSL_CTX_sess_get_new_cb>(SSL_CTX *ctx)(SSL *ssl, SSL_SESSION *sess);
297 =item void (*B<SSL_CTX_sess_get_remove_cb>(SSL_CTX *ctx)(SSL_CTX *ctx, SSL_SESSION *sess);
299 =item int B<SSL_CTX_sess_hits>(SSL_CTX *ctx);
301 =item int B<SSL_CTX_sess_misses>(SSL_CTX *ctx);
303 =item int B<SSL_CTX_sess_number>(SSL_CTX *ctx);
305 =item void B<SSL_CTX_sess_set_cache_size>(SSL_CTX *ctx,t);
307 =item void B<SSL_CTX_sess_set_get_cb>(SSL_CTX *ctx, SSL_SESSION *(*cb)(SSL *ssl, unsigned char *data, int len, int *copy));
309 =item void B<SSL_CTX_sess_set_new_cb>(SSL_CTX *ctx, int (*cb)(SSL *ssl, SSL_SESSION *sess));
311 =item void B<SSL_CTX_sess_set_remove_cb>(SSL_CTX *ctx, void (*cb)(SSL_CTX *ctx, SSL_SESSION *sess));
313 =item int B<SSL_CTX_sess_timeouts>(SSL_CTX *ctx);
315 =item LHASH *B<SSL_CTX_sessions>(SSL_CTX *ctx);
317 =item void B<SSL_CTX_set_app_data>(SSL_CTX *ctx, void *arg);
319 =item void B<SSL_CTX_set_cert_store>(SSL_CTX *ctx, X509_STORE *cs);
321 =item void B<SSL_CTX_set_cert_verify_cb>(SSL_CTX *ctx, int (*cb)(), char *arg)
323 =item int B<SSL_CTX_set_cipher_list>(SSL_CTX *ctx, char *str);
325 =item void B<SSL_CTX_set_client_CA_list>(SSL_CTX *ctx, STACK *list);
327 =item void B<SSL_CTX_set_client_cert_cb>(SSL_CTX *ctx, int (*cb)(SSL *ssl, X509 **x509, EVP_PKEY **pkey));
329 =item void B<SSL_CTX_set_default_passwd_cb>(SSL_CTX *ctx, int (*cb);(void))
331 =item void B<SSL_CTX_set_default_read_ahead>(SSL_CTX *ctx, int m);
333 =item int B<SSL_CTX_set_default_verify_paths>(SSL_CTX *ctx);
335 Use the default paths to locate trusted CA certificates. There is one default
336 directory path and one default file path. Both are set via this call.
338 =item int B<SSL_CTX_set_default_verify_dir>(SSL_CTX *ctx)
340 Use the default directory path to locate trusted CA certificates.
342 =item int B<SSL_CTX_set_default_verify_file>(SSL_CTX *ctx)
344 Use the file path to locate trusted CA certificates.
346 =item int B<SSL_CTX_set_ex_data>(SSL_CTX *s, int idx, char *arg);
348 =item void B<SSL_CTX_set_info_callback>(SSL_CTX *ctx, void (*cb)(SSL *ssl, int cb, int ret));
350 =item void B<SSL_CTX_set_msg_callback>(SSL_CTX *ctx, void (*cb)(int write_p, int version, int content_type, const void *buf, size_t len, SSL *ssl, void *arg));
352 =item void B<SSL_CTX_set_msg_callback_arg>(SSL_CTX *ctx, void *arg);
354 =item unsigned long B<SSL_CTX_clear_options>(SSL_CTX *ctx, unsigned long op);
356 =item unsigned long B<SSL_CTX_get_options>(SSL_CTX *ctx);
358 =item unsigned long B<SSL_CTX_set_options>(SSL_CTX *ctx, unsigned long op);
360 =item void B<SSL_CTX_set_quiet_shutdown>(SSL_CTX *ctx, int mode);
362 =item void B<SSL_CTX_set_read_ahead>(SSL_CTX *ctx, int m);
364 =item void B<SSL_CTX_set_session_cache_mode>(SSL_CTX *ctx, int mode);
366 =item int B<SSL_CTX_set_ssl_version>(SSL_CTX *ctx, const SSL_METHOD *meth);
368 =item void B<SSL_CTX_set_timeout>(SSL_CTX *ctx, long t);
370 =item long B<SSL_CTX_set_tmp_dh>(SSL_CTX* ctx, DH *dh);
372 =item long B<SSL_CTX_set_tmp_dh_callback>(SSL_CTX *ctx, DH *(*cb)(void));
374 =item void B<SSL_CTX_set_verify>(SSL_CTX *ctx, int mode, int (*cb);(void))
376 =item int B<SSL_CTX_use_PrivateKey>(SSL_CTX *ctx, EVP_PKEY *pkey);
378 =item int B<SSL_CTX_use_PrivateKey_ASN1>(int type, SSL_CTX *ctx, unsigned char *d, long len);
380 =item int B<SSL_CTX_use_PrivateKey_file>(SSL_CTX *ctx, const char *file, int type);
382 =item int B<SSL_CTX_use_RSAPrivateKey>(SSL_CTX *ctx, RSA *rsa);
384 =item int B<SSL_CTX_use_RSAPrivateKey_ASN1>(SSL_CTX *ctx, unsigned char *d, long len);
386 =item int B<SSL_CTX_use_RSAPrivateKey_file>(SSL_CTX *ctx, const char *file, int type);
388 =item int B<SSL_CTX_use_certificate>(SSL_CTX *ctx, X509 *x);
390 =item int B<SSL_CTX_use_certificate_ASN1>(SSL_CTX *ctx, int len, unsigned char *d);
392 =item int B<SSL_CTX_use_certificate_file>(SSL_CTX *ctx, const char *file, int type);
394 =item X509 *B<SSL_CTX_get0_certificate>(const SSL_CTX *ctx);
396 =item EVP_PKEY *B<SSL_CTX_get0_privatekey>(const SSL_CTX *ctx);
398 =item void B<SSL_CTX_set_psk_client_callback>(SSL_CTX *ctx, unsigned int (*callback)(SSL *ssl, const char *hint, char *identity, unsigned int max_identity_len, unsigned char *psk, unsigned int max_psk_len));
400 =item int B<SSL_CTX_use_psk_identity_hint>(SSL_CTX *ctx, const char *hint);
402 =item void B<SSL_CTX_set_psk_server_callback>(SSL_CTX *ctx, unsigned int (*callback)(SSL *ssl, const char *identity, unsigned char *psk, int max_psk_len));
407 =head2 Dealing with Sessions
409 Here we document the various API functions which deal with the SSL/TLS
410 sessions defined in the B<SSL_SESSION> structures.
414 =item int B<SSL_SESSION_cmp>(const SSL_SESSION *a, const SSL_SESSION *b);
416 =item void B<SSL_SESSION_free>(SSL_SESSION *ss);
418 =item char *B<SSL_SESSION_get_app_data>(SSL_SESSION *s);
420 =item char *B<SSL_SESSION_get_ex_data>(const SSL_SESSION *s, int idx);
422 =item int B<SSL_SESSION_get_ex_new_index>(long argl, char *argp, int (*new_func);(void), int (*dup_func)(void), void (*free_func)(void))
424 =item long B<SSL_SESSION_get_time>(const SSL_SESSION *s);
426 =item long B<SSL_SESSION_get_timeout>(const SSL_SESSION *s);
428 =item unsigned long B<SSL_SESSION_hash>(const SSL_SESSION *a);
430 =item SSL_SESSION *B<SSL_SESSION_new>(void);
432 =item int B<SSL_SESSION_print>(BIO *bp, const SSL_SESSION *x);
434 =item int B<SSL_SESSION_print_fp>(FILE *fp, const SSL_SESSION *x);
436 =item void B<SSL_SESSION_set_app_data>(SSL_SESSION *s, char *a);
438 =item int B<SSL_SESSION_set_ex_data>(SSL_SESSION *s, int idx, char *arg);
440 =item long B<SSL_SESSION_set_time>(SSL_SESSION *s, long t);
442 =item long B<SSL_SESSION_set_timeout>(SSL_SESSION *s, long t);
446 =head2 Dealing with Connections
448 Here we document the various API functions which deal with the SSL/TLS
449 connection defined in the B<SSL> structure.
453 =item int B<SSL_accept>(SSL *ssl);
455 =item int B<SSL_add_dir_cert_subjects_to_stack>(STACK *stack, const char *dir);
457 =item int B<SSL_add_file_cert_subjects_to_stack>(STACK *stack, const char *file);
459 =item int B<SSL_add_client_CA>(SSL *ssl, X509 *x);
461 =item char *B<SSL_alert_desc_string>(int value);
463 =item char *B<SSL_alert_desc_string_long>(int value);
465 =item char *B<SSL_alert_type_string>(int value);
467 =item char *B<SSL_alert_type_string_long>(int value);
469 =item int B<SSL_check_private_key>(const SSL *ssl);
471 =item void B<SSL_clear>(SSL *ssl);
473 =item long B<SSL_clear_num_renegotiations>(SSL *ssl);
475 =item int B<SSL_connect>(SSL *ssl);
477 =item int B<SSL_copy_session_id>(SSL *t, const SSL *f);
479 Sets the session details for B<t> to be the same as in B<f>. Returns 1 on
480 success or 0 on failure.
482 =item long B<SSL_ctrl>(SSL *ssl, int cmd, long larg, char *parg);
484 =item int B<SSL_do_handshake>(SSL *ssl);
486 =item SSL *B<SSL_dup>(SSL *ssl);
488 SSL_dup() allows applications to configure an SSL handle for use
489 in multiple SSL connections, and then duplicate it prior to initiating
490 each connection with the duplicated handle.
491 Use of SSL_dup() avoids the need to repeat the configuration of the
492 handles for each connection.
493 This is used internally by L<BIO_s_accept(3)> to construct
494 per-connection SSL handles after L<accept(2)>.
496 For SSL_dup() to work, the connection MUST be in its initial state
497 and MUST NOT have not yet have started the SSL handshake.
498 For connections that are not in their initial state SSL_dup() just
499 increments an internal reference count and returns the I<same>
501 It may be possible to use L<SSL_clear(3)> to recycle an SSL handle
502 that is not in its initial state for re-use, but this is best
504 Instead, save and restore the session, if desired, and construct a
505 fresh handle for each connection.
507 =item STACK *B<SSL_dup_CA_list>(STACK *sk);
509 =item void B<SSL_free>(SSL *ssl);
511 =item SSL_CTX *B<SSL_get_SSL_CTX>(const SSL *ssl);
513 =item char *B<SSL_get_app_data>(SSL *ssl);
515 =item X509 *B<SSL_get_certificate>(const SSL *ssl);
517 =item const char *B<SSL_get_cipher>(const SSL *ssl);
519 =item int B<SSL_get_cipher_bits>(const SSL *ssl, int *alg_bits);
521 =item char *B<SSL_get_cipher_list>(const SSL *ssl, int n);
523 =item char *B<SSL_get_cipher_name>(const SSL *ssl);
525 =item char *B<SSL_get_cipher_version>(const SSL *ssl);
527 =item STACK *B<SSL_get_ciphers>(const SSL *ssl);
529 =item STACK *B<SSL_get_client_CA_list>(const SSL *ssl);
531 =item SSL_CIPHER *B<SSL_get_current_cipher>(SSL *ssl);
533 =item long B<SSL_get_default_timeout>(const SSL *ssl);
535 =item int B<SSL_get_error>(const SSL *ssl, int i);
537 =item char *B<SSL_get_ex_data>(const SSL *ssl, int idx);
539 =item int B<SSL_get_ex_data_X509_STORE_CTX_idx>(void);
541 =item int B<SSL_get_ex_new_index>(long argl, char *argp, int (*new_func);(void), int (*dup_func)(void), void (*free_func)(void))
543 =item int B<SSL_get_fd>(const SSL *ssl);
545 =item void (*B<SSL_get_info_callback>(const SSL *ssl);)()
547 =item STACK *B<SSL_get_peer_cert_chain>(const SSL *ssl);
549 =item X509 *B<SSL_get_peer_certificate>(const SSL *ssl);
551 =item EVP_PKEY *B<SSL_get_privatekey>(const SSL *ssl);
553 =item int B<SSL_get_quiet_shutdown>(const SSL *ssl);
555 =item BIO *B<SSL_get_rbio>(const SSL *ssl);
557 =item int B<SSL_get_read_ahead>(const SSL *ssl);
559 =item SSL_SESSION *B<SSL_get_session>(const SSL *ssl);
561 =item char *B<SSL_get_shared_ciphers>(const SSL *ssl, char *buf, int len);
563 =item int B<SSL_get_shutdown>(const SSL *ssl);
565 =item const SSL_METHOD *B<SSL_get_ssl_method>(SSL *ssl);
567 =item int B<SSL_get_state>(const SSL *ssl);
569 =item long B<SSL_get_time>(const SSL *ssl);
571 =item long B<SSL_get_timeout>(const SSL *ssl);
573 =item int (*B<SSL_get_verify_callback>(const SSL *ssl))(int,X509_STORE_CTX *)
575 =item int B<SSL_get_verify_mode>(const SSL *ssl);
577 =item long B<SSL_get_verify_result>(const SSL *ssl);
579 =item char *B<SSL_get_version>(const SSL *ssl);
581 =item BIO *B<SSL_get_wbio>(const SSL *ssl);
583 =item int B<SSL_in_accept_init>(SSL *ssl);
585 =item int B<SSL_in_before>(SSL *ssl);
587 =item int B<SSL_in_connect_init>(SSL *ssl);
589 =item int B<SSL_in_init>(SSL *ssl);
591 =item int B<SSL_is_init_finished>(SSL *ssl);
593 =item STACK *B<SSL_load_client_CA_file>(const char *file);
595 =item SSL *B<SSL_new>(SSL_CTX *ctx);
597 =item int SSL_up_ref(SSL *s);
599 =item long B<SSL_num_renegotiations>(SSL *ssl);
601 =item int B<SSL_peek>(SSL *ssl, void *buf, int num);
603 =item int B<SSL_pending>(const SSL *ssl);
605 =item int B<SSL_read>(SSL *ssl, void *buf, int num);
607 =item int B<SSL_renegotiate>(SSL *ssl);
609 =item char *B<SSL_rstate_string>(SSL *ssl);
611 =item char *B<SSL_rstate_string_long>(SSL *ssl);
613 =item long B<SSL_session_reused>(SSL *ssl);
615 =item void B<SSL_set_accept_state>(SSL *ssl);
617 =item void B<SSL_set_app_data>(SSL *ssl, char *arg);
619 =item void B<SSL_set_bio>(SSL *ssl, BIO *rbio, BIO *wbio);
621 =item int B<SSL_set_cipher_list>(SSL *ssl, char *str);
623 =item void B<SSL_set_client_CA_list>(SSL *ssl, STACK *list);
625 =item void B<SSL_set_connect_state>(SSL *ssl);
627 =item int B<SSL_set_ex_data>(SSL *ssl, int idx, char *arg);
629 =item int B<SSL_set_fd>(SSL *ssl, int fd);
631 =item void B<SSL_set_info_callback>(SSL *ssl, void (*cb);(void))
633 =item void B<SSL_set_msg_callback>(SSL *ctx, void (*cb)(int write_p, int version, int content_type, const void *buf, size_t len, SSL *ssl, void *arg));
635 =item void B<SSL_set_msg_callback_arg>(SSL *ctx, void *arg);
637 =item unsigned long B<SSL_clear_options>(SSL *ssl, unsigned long op);
639 =item unsigned long B<SSL_get_options>(SSL *ssl);
641 =item unsigned long B<SSL_set_options>(SSL *ssl, unsigned long op);
643 =item void B<SSL_set_quiet_shutdown>(SSL *ssl, int mode);
645 =item void B<SSL_set_read_ahead>(SSL *ssl, int yes);
647 =item int B<SSL_set_rfd>(SSL *ssl, int fd);
649 =item int B<SSL_set_session>(SSL *ssl, SSL_SESSION *session);
651 =item void B<SSL_set_shutdown>(SSL *ssl, int mode);
653 =item int B<SSL_set_ssl_method>(SSL *ssl, const SSL_METHOD *meth);
655 =item void B<SSL_set_time>(SSL *ssl, long t);
657 =item void B<SSL_set_timeout>(SSL *ssl, long t);
659 =item void B<SSL_set_verify>(SSL *ssl, int mode, int (*callback);(void))
661 =item void B<SSL_set_verify_result>(SSL *ssl, long arg);
663 =item int B<SSL_set_wfd>(SSL *ssl, int fd);
665 =item int B<SSL_shutdown>(SSL *ssl);
667 =item OSSL_HANDSHAKE_STATE B<SSL_get_state>(const SSL *ssl);
669 Returns the current handshake state.
671 =item char *B<SSL_state_string>(const SSL *ssl);
673 =item char *B<SSL_state_string_long>(const SSL *ssl);
675 =item long B<SSL_total_renegotiations>(SSL *ssl);
677 =item int B<SSL_use_PrivateKey>(SSL *ssl, EVP_PKEY *pkey);
679 =item int B<SSL_use_PrivateKey_ASN1>(int type, SSL *ssl, unsigned char *d, long len);
681 =item int B<SSL_use_PrivateKey_file>(SSL *ssl, const char *file, int type);
683 =item int B<SSL_use_RSAPrivateKey>(SSL *ssl, RSA *rsa);
685 =item int B<SSL_use_RSAPrivateKey_ASN1>(SSL *ssl, unsigned char *d, long len);
687 =item int B<SSL_use_RSAPrivateKey_file>(SSL *ssl, const char *file, int type);
689 =item int B<SSL_use_certificate>(SSL *ssl, X509 *x);
691 =item int B<SSL_use_certificate_ASN1>(SSL *ssl, int len, unsigned char *d);
693 =item int B<SSL_use_certificate_file>(SSL *ssl, const char *file, int type);
695 =item int B<SSL_version>(const SSL *ssl);
697 =item int B<SSL_want>(const SSL *ssl);
699 =item int B<SSL_want_nothing>(const SSL *ssl);
701 =item int B<SSL_want_read>(const SSL *ssl);
703 =item int B<SSL_want_write>(const SSL *ssl);
705 =item int B<SSL_want_x509_lookup>(const SSL *ssl);
707 =item int B<SSL_write>(SSL *ssl, const void *buf, int num);
709 =item void B<SSL_set_psk_client_callback>(SSL *ssl, unsigned int (*callback)(SSL *ssl, const char *hint, char *identity, unsigned int max_identity_len, unsigned char *psk, unsigned int max_psk_len));
711 =item int B<SSL_use_psk_identity_hint>(SSL *ssl, const char *hint);
713 =item void B<SSL_set_psk_server_callback>(SSL *ssl, unsigned int (*callback)(SSL *ssl, const char *identity, unsigned char *psk, int max_psk_len));
715 =item const char *B<SSL_get_psk_identity_hint>(SSL *ssl);
717 =item const char *B<SSL_get_psk_identity>(SSL *ssl);
723 L<openssl(1)>, L<crypto(3)>,
724 L<CRYPTO_get_ex_new_index(3)>,
725 L<SSL_accept(3)>, L<SSL_clear(3)>,
727 L<SSL_CIPHER_get_name(3)>,
728 L<SSL_COMP_add_compression_method(3)>,
729 L<SSL_CTX_add_extra_chain_cert(3)>,
730 L<SSL_CTX_add_session(3)>,
732 L<SSL_CTX_flush_sessions(3)>,
733 L<SSL_CTX_get_verify_mode(3)>,
734 L<SSL_CTX_load_verify_locations(3)>
736 L<SSL_CTX_sess_number(3)>,
737 L<SSL_CTX_sess_set_cache_size(3)>,
738 L<SSL_CTX_sess_set_get_cb(3)>,
739 L<SSL_CTX_sessions(3)>,
740 L<SSL_CTX_set_cert_store(3)>,
741 L<SSL_CTX_set_cert_verify_callback(3)>,
742 L<SSL_CTX_set_cipher_list(3)>,
743 L<SSL_CTX_set_client_CA_list(3)>,
744 L<SSL_CTX_set_client_cert_cb(3)>,
745 L<SSL_CTX_set_default_passwd_cb(3)>,
746 L<SSL_CTX_set_generate_session_id(3)>,
747 L<SSL_CTX_set_info_callback(3)>,
748 L<SSL_CTX_set_max_cert_list(3)>,
749 L<SSL_CTX_set_mode(3)>,
750 L<SSL_CTX_set_msg_callback(3)>,
751 L<SSL_CTX_set_options(3)>,
752 L<SSL_CTX_set_quiet_shutdown(3)>,
753 L<SSL_CTX_set_read_ahead(3)>,
754 L<SSL_CTX_set_session_cache_mode(3)>,
755 L<SSL_CTX_set_session_id_context(3)>,
756 L<SSL_CTX_set_ssl_version(3)>,
757 L<SSL_CTX_set_timeout(3)>,
758 L<SSL_CTX_set_tmp_dh_callback(3)>,
759 L<SSL_CTX_set_verify(3)>,
760 L<SSL_CTX_use_certificate(3)>,
761 L<SSL_alert_type_string(3)>,
762 L<SSL_do_handshake(3)>,
763 L<SSL_get_SSL_CTX(3)>,
764 L<SSL_get_ciphers(3)>,
765 L<SSL_get_client_CA_list(3)>,
766 L<SSL_get_default_timeout(3)>,
768 L<SSL_get_ex_data_X509_STORE_CTX_idx(3)>,
770 L<SSL_get_peer_cert_chain(3)>,
772 L<SSL_get_session(3)>,
773 L<SSL_get_verify_result(3)>,
774 L<SSL_get_version(3)>,
775 L<SSL_load_client_CA_file(3)>,
779 L<SSL_rstate_string(3)>,
780 L<SSL_session_reused(3)>,
782 L<SSL_set_connect_state(3)>,
784 L<SSL_set_session(3)>,
785 L<SSL_set_shutdown(3)>,
787 L<SSL_state_string(3)>,
790 L<SSL_SESSION_free(3)>,
791 L<SSL_SESSION_get_time(3)>,
792 L<d2i_SSL_SESSION(3)>,
793 L<SSL_CTX_set_psk_client_callback(3)>,
794 L<SSL_CTX_use_psk_identity_hint(3)>,
795 L<SSL_get_psk_identity(3)>,
800 B<SSLv2_client_method>, B<SSLv2_server_method> and B<SSLv2_method> where removed
803 The return type of B<SSL_copy_session_id> was changed from void to int in
808 Copyright 2000-2016 The OpenSSL Project Authors. All Rights Reserved.
810 Licensed under the OpenSSL license (the "License"). You may not use
811 this file except in compliance with the License. You can obtain a copy
812 in the file LICENSE in the source distribution or at
813 L<https://www.openssl.org/source/license.html>.