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Title "ssl 3" For nroff, turn off justification. Always turn off hyphenation; it makes
way too many mistakes in technical documents.
SSL - OpenSSL SSL/TLS library Header "SYNOPSIS" Header "DESCRIPTION" The OpenSSL ssl library implements the Secure Sockets Layer (\s-1SSL\s0 v2/v3) and Transport Layer Security (\s-1TLS\s0 v1) protocols. It provides a rich \s-1API\s0 which is documented here.

At first the library must be initialized; see \fISSL_library_init\|(3).

Then an \s-1SSL_CTX\s0 object is created as a framework to establish \s-1TLS/SSL\s0 enabled connections (see SSL_CTX_new\|(3)). Various options regarding certificates, algorithms etc. can be set in this object.

When a network connection has been created, it can be assigned to an \fB\s-1SSL\s0 object. After the \s-1SSL\s0 object has been created using \fISSL_new\|(3), SSL_set_fd\|(3) or \fISSL_set_bio\|(3) can be used to associate the network connection with the object.

Then the \s-1TLS/SSL\s0 handshake is performed using \fISSL_accept\|(3) or SSL_connect\|(3) respectively. \fISSL_read\|(3) and SSL_write\|(3) are used to read and write data on the \s-1TLS/SSL\s0 connection. \fISSL_shutdown\|(3) can be used to shut down the \s-1TLS/SSL\s0 connection.

Header "DATA STRUCTURES" Currently the OpenSSL ssl library functions deals with the following data structures: Item "SSL_METHOD (SSL Method)" That's a dispatch structure describing the internal ssl library methods/functions which implement the various protocol versions (SSLv1, SSLv2 and TLSv1). It's needed to create an \s-1SSL_CTX\s0. Item "SSL_CIPHER (SSL Cipher)" This structure holds the algorithm information for a particular cipher which are a core part of the \s-1SSL/TLS\s0 protocol. The available ciphers are configured on a \s-1SSL_CTX\s0 basis and the actually used ones are then part of the \fB\s-1SSL_SESSION\s0. Item "SSL_CTX (SSL Context)" That's the global context structure which is created by a server or client once per program life-time and which holds mainly default values for the \fB\s-1SSL\s0 structures which are later created for the connections. Item "SSL_SESSION (SSL Session)" This is a structure containing the current \s-1TLS/SSL\s0 session details for a connection: \s-1SSL_CIPHER\s0s, client and server certificates, keys, etc. Item "SSL (SSL Connection)" That's the main \s-1SSL/TLS\s0 structure which is created by a server or client per established connection. This actually is the core structure in the \s-1SSL API.\s0 Under run-time the application usually deals with this structure which has links to mostly all other structures. Header "HEADER FILES" Currently the OpenSSL ssl library provides the following C header files containing the prototypes for the data structures and and functions: Item "ssl.h" That's the common header file for the \s-1SSL/TLS API. \s0 Include it into your program to make the \s-1API\s0 of the ssl library available. It internally includes both more private \s-1SSL\s0 headers and headers from the crypto library. Whenever you need hard-core details on the internals of the \s-1SSL API,\s0 look inside this header file. Item "ssl2.h" That's the sub header file dealing with the SSLv2 protocol only. \fIUsually you don't have to include it explicitly because it's already included by ssl.h. Item "ssl3.h" That's the sub header file dealing with the SSLv3 protocol only. \fIUsually you don't have to include it explicitly because it's already included by ssl.h. Item "ssl23.h" That's the sub header file dealing with the combined use of the SSLv2 and SSLv3 protocols. \fIUsually you don't have to include it explicitly because it's already included by ssl.h. Item "tls1.h" That's the sub header file dealing with the TLSv1 protocol only. \fIUsually you don't have to include it explicitly because it's already included by ssl.h. Header "API FUNCTIONS" Currently the OpenSSL ssl library exports 214 \s-1API\s0 functions. They are documented in the following: Subsection "DEALING WITH PROTOCOL METHODS" Here we document the various \s-1API\s0 functions which deal with the \s-1SSL/TLS\s0 protocol methods defined in \s-1SSL_METHOD\s0 structures. Item "SSL_METHOD *SSLv2_client_method(void);" Constructor for the SSLv2 \s-1SSL_METHOD\s0 structure for a dedicated client. Item "SSL_METHOD *SSLv2_server_method(void);" Constructor for the SSLv2 \s-1SSL_METHOD\s0 structure for a dedicated server. Item "SSL_METHOD *SSLv2_method(void);" Constructor for the SSLv2 \s-1SSL_METHOD\s0 structure for combined client and server. Item "SSL_METHOD *SSLv3_client_method(void);" Constructor for the SSLv3 \s-1SSL_METHOD\s0 structure for a dedicated client. Item "SSL_METHOD *SSLv3_server_method(void);" Constructor for the SSLv3 \s-1SSL_METHOD\s0 structure for a dedicated server. Item "SSL_METHOD *SSLv3_method(void);" Constructor for the SSLv3 \s-1SSL_METHOD\s0 structure for combined client and server. Item "SSL_METHOD *TLSv1_client_method(void);" Constructor for the TLSv1 \s-1SSL_METHOD\s0 structure for a dedicated client. Item "SSL_METHOD *TLSv1_server_method(void);" Constructor for the TLSv1 \s-1SSL_METHOD\s0 structure for a dedicated server. Item "SSL_METHOD *TLSv1_method(void);" Constructor for the TLSv1 \s-1SSL_METHOD\s0 structure for combined client and server. Subsection "DEALING WITH CIPHERS" Here we document the various \s-1API\s0 functions which deal with the \s-1SSL/TLS\s0 ciphers defined in \s-1SSL_CIPHER\s0 structures. Item "char *SSL_CIPHER_description(SSL_CIPHER *cipher, char *buf, int len);" Write a string to buf (with a maximum size of len) containing a human readable description of cipher. Returns buf. Item "int SSL_CIPHER_get_bits(SSL_CIPHER *cipher, int *alg_bits);" Determine the number of bits in cipher. Because of export crippled ciphers there are two bits: The bits the algorithm supports in general (stored to \fIalg_bits) and the bits which are actually used (the return value). Item "const char *SSL_CIPHER_get_name(SSL_CIPHER *cipher);" Return the internal name of cipher as a string. These are the various strings defined by the SSL2_TXT_xxx, SSL3_TXT_xxx and TLS1_TXT_xxx definitions in the header files. Item "char *SSL_CIPHER_get_version(SSL_CIPHER *cipher);" Returns a string like "\*(C`TLSv1/SSLv3\*(C'\*(L" or \*(R"\*(C`SSLv2\*(C'" which indicates the \s-1SSL/TLS\s0 protocol version to which cipher belongs (i.e. where it was defined in the specification the first time). Subsection "DEALING WITH PROTOCOL CONTEXTS" Here we document the various \s-1API\s0 functions which deal with the \s-1SSL/TLS\s0 protocol context defined in the \s-1SSL_CTX\s0 structure. Item "int SSL_CTX_add_client_CA(SSL_CTX *ctx, X509 *x);"

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Item "long SSL_CTX_add_extra_chain_cert(SSL_CTX *ctx, X509 *x509);" Item "int SSL_CTX_add_session(SSL_CTX *ctx, SSL_SESSION *c);" Item "int SSL_CTX_check_private_key(const SSL_CTX *ctx);" Item "long SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, char *parg);" Item "void SSL_CTX_flush_sessions(SSL_CTX *s, long t);" Item "void SSL_CTX_free(SSL_CTX *a);" Item "char *SSL_CTX_get_app_data(SSL_CTX *ctx);" Item "X509_STORE *SSL_CTX_get_cert_store(SSL_CTX *ctx);" Item "STACK *SSL_CTX_get_client_CA_list(const SSL_CTX *ctx);" Item "int (*SSL_CTX_get_client_cert_cb(SSL_CTX *ctx))(SSL *ssl, X509 **x509, EVP_PKEY **pkey);" Item "char *SSL_CTX_get_ex_data(const SSL_CTX *s, int idx);" Item "int SSL_CTX_get_ex_new_index(long argl, char *argp, int (*new_func);(void), int (*dup_func)(void), void (*free_func)(void))" Item "void (*SSL_CTX_get_info_callback(SSL_CTX *ctx))(SSL *ssl, int cb, int ret);" Item "int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx);" Item "int SSL_CTX_get_session_cache_mode(SSL_CTX *ctx);" Item "long SSL_CTX_get_timeout(const SSL_CTX *ctx);" Item "int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx))(int ok, X509_STORE_CTX *ctx);" Item "int SSL_CTX_get_verify_mode(SSL_CTX *ctx);" Item "int SSL_CTX_load_verify_locations(SSL_CTX *ctx, char *CAfile, char *CApath);" Item "long SSL_CTX_need_tmp_RSA(SSL_CTX *ctx);" Item "SSL_CTX *SSL_CTX_new(SSL_METHOD *meth);" Item "int SSL_CTX_remove_session(SSL_CTX *ctx, SSL_SESSION *c);" Item "int SSL_CTX_sess_accept(SSL_CTX *ctx);" Item "int SSL_CTX_sess_accept_good(SSL_CTX *ctx);" Item "int SSL_CTX_sess_accept_renegotiate(SSL_CTX *ctx);" Item "int SSL_CTX_sess_cache_full(SSL_CTX *ctx);" Item "int SSL_CTX_sess_cb_hits(SSL_CTX *ctx);" Item "int SSL_CTX_sess_connect(SSL_CTX *ctx);" Item "int SSL_CTX_sess_connect_good(SSL_CTX *ctx);" Item "int SSL_CTX_sess_connect_renegotiate(SSL_CTX *ctx);" Item "int SSL_CTX_sess_get_cache_size(SSL_CTX *ctx);" Item "SSL_SESSION *(*SSL_CTX_sess_get_get_cb(SSL_CTX *ctx))(SSL *ssl, unsigned char *data, int len, int *copy);" Item "int (*SSL_CTX_sess_get_new_cb(SSL_CTX *ctx)(SSL *ssl, SSL_SESSION *sess);" Item "void (*SSL_CTX_sess_get_remove_cb(SSL_CTX *ctx)(SSL_CTX *ctx, SSL_SESSION *sess);" Item "int SSL_CTX_sess_hits(SSL_CTX *ctx);" Item "int SSL_CTX_sess_misses(SSL_CTX *ctx);" Item "int SSL_CTX_sess_number(SSL_CTX *ctx);" Item "void SSL_CTX_sess_set_cache_size(SSL_CTX *ctx,t);" Item "void SSL_CTX_sess_set_get_cb(SSL_CTX *ctx, SSL_SESSION *(*cb)(SSL *ssl, unsigned char *data, int len, int *copy));" Item "void SSL_CTX_sess_set_new_cb(SSL_CTX *ctx, int (*cb)(SSL *ssl, SSL_SESSION *sess));" Item "void SSL_CTX_sess_set_remove_cb(SSL_CTX *ctx, void (*cb)(SSL_CTX *ctx, SSL_SESSION *sess));" Item "int SSL_CTX_sess_timeouts(SSL_CTX *ctx);" Item "LHASH *SSL_CTX_sessions(SSL_CTX *ctx);" Item "void SSL_CTX_set_app_data(SSL_CTX *ctx, void *arg);" Item "void SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *cs);" Item "void SSL_CTX_set_cert_verify_cb(SSL_CTX *ctx, int (*cb)(), char *arg)" Item "int SSL_CTX_set_cipher_list(SSL_CTX *ctx, char *str);" Item "void SSL_CTX_set_client_CA_list(SSL_CTX *ctx, STACK *list);" Item "void SSL_CTX_set_client_cert_cb(SSL_CTX *ctx, int (*cb)(SSL *ssl, X509 **x509, EVP_PKEY **pkey));" Item "void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, int (*cb);(void))" Item "void SSL_CTX_set_default_read_ahead(SSL_CTX *ctx, int m);" Item "int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx);" Item "int SSL_CTX_set_ex_data(SSL_CTX *s, int idx, char *arg);" Item "void SSL_CTX_set_info_callback(SSL_CTX *ctx, void (*cb)(SSL *ssl, int cb, int ret));" Item "void 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));" Item "void SSL_CTX_set_msg_callback_arg(SSL_CTX *ctx, void *arg);" Item "void SSL_CTX_set_options(SSL_CTX *ctx, unsigned long op);" Item "void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode);" Item "void SSL_CTX_set_session_cache_mode(SSL_CTX *ctx, int mode);" Item "int SSL_CTX_set_ssl_version(SSL_CTX *ctx, SSL_METHOD *meth);" Item "void SSL_CTX_set_timeout(SSL_CTX *ctx, long t);" Item "long SSL_CTX_set_tmp_dh(SSL_CTX* ctx, DH *dh);" Item "long SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx, DH *(*cb)(void));" Item "long SSL_CTX_set_tmp_rsa(SSL_CTX *ctx, RSA *rsa);" Item "SSL_CTX_set_tmp_rsa_callback"

\f(CW\*(C`long \f(CBSSL_CTX_set_tmp_rsa_callback(SSL_CTX *\f(CBctx, RSA *(*\f(CBcb)(SSL *\f(CBssl, int \f(CBexport, int \f(CBkeylength));\*(C' .Sp Sets the callback which will be called when a temporary private key is required. The \f(CB\*(C`export\*(C' flag will be set if the reason for needing a temp key is that an export ciphersuite is in use, in which case, \fB\f(CB\*(C`keylength\*(C' will contain the required keylength in bits. Generate a key of appropriate size (using ???) and return it.

Item "SSL_set_tmp_rsa_callback" long SSL_set_tmp_rsa_callback(\s-1SSL\s0 *ssl, \s-1RSA\s0 *(*cb)(\s-1SSL\s0 *ssl, int export, int keylength)); .Sp The same as SSL_CTX_set_tmp_rsa_callback, except it operates on an \s-1SSL\s0 session instead of a context. Item "void SSL_CTX_set_verify(SSL_CTX *ctx, int mode, int (*cb);(void))"

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Item "int SSL_CTX_use_PrivateKey(SSL_CTX *ctx, EVP_PKEY *pkey);" Item "int SSL_CTX_use_PrivateKey_ASN1(int type, SSL_CTX *ctx, unsigned char *d, long len);" Item "int SSL_CTX_use_PrivateKey_file(SSL_CTX *ctx, char *file, int type);" Item "int SSL_CTX_use_RSAPrivateKey(SSL_CTX *ctx, RSA *rsa);" Item "int SSL_CTX_use_RSAPrivateKey_ASN1(SSL_CTX *ctx, unsigned char *d, long len);" Item "int SSL_CTX_use_RSAPrivateKey_file(SSL_CTX *ctx, char *file, int type);" Item "int SSL_CTX_use_certificate(SSL_CTX *ctx, X509 *x);" Item "int SSL_CTX_use_certificate_ASN1(SSL_CTX *ctx, int len, unsigned char *d);" Item "int SSL_CTX_use_certificate_file(SSL_CTX *ctx, char *file, int type);"

Subsection "DEALING WITH SESSIONS" Here we document the various \s-1API\s0 functions which deal with the \s-1SSL/TLS\s0 sessions defined in the \s-1SSL_SESSION\s0 structures. Item "int SSL_SESSION_cmp(const SSL_SESSION *a, const SSL_SESSION *b);"

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Item "void SSL_SESSION_free(SSL_SESSION *ss);" Item "char *SSL_SESSION_get_app_data(SSL_SESSION *s);" Item "char *SSL_SESSION_get_ex_data(const SSL_SESSION *s, int idx);" Item "int SSL_SESSION_get_ex_new_index(long argl, char *argp, int (*new_func);(void), int (*dup_func)(void), void (*free_func)(void))" Item "long SSL_SESSION_get_time(const SSL_SESSION *s);" Item "long SSL_SESSION_get_timeout(const SSL_SESSION *s);" Item "unsigned long SSL_SESSION_hash(const SSL_SESSION *a);" Item "SSL_SESSION *SSL_SESSION_new(void);" Item "int SSL_SESSION_print(BIO *bp, const SSL_SESSION *x);" Item "int SSL_SESSION_print_fp(FILE *fp, const SSL_SESSION *x);" Item "void SSL_SESSION_set_app_data(SSL_SESSION *s, char *a);" Item "int SSL_SESSION_set_ex_data(SSL_SESSION *s, int idx, char *arg);" Item "long SSL_SESSION_set_time(SSL_SESSION *s, long t);" Item "long SSL_SESSION_set_timeout(SSL_SESSION *s, long t);"

Subsection "DEALING WITH CONNECTIONS" Here we document the various \s-1API\s0 functions which deal with the \s-1SSL/TLS\s0 connection defined in the \s-1SSL\s0 structure. Item "int SSL_accept(SSL *ssl);"

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Item "int SSL_add_dir_cert_subjects_to_stack(STACK *stack, const char *dir);" Item "int SSL_add_file_cert_subjects_to_stack(STACK *stack, const char *file);" Item "int SSL_add_client_CA(SSL *ssl, X509 *x);" Item "char *SSL_alert_desc_string(int value);" Item "char *SSL_alert_desc_string_long(int value);" Item "char *SSL_alert_type_string(int value);" Item "char *SSL_alert_type_string_long(int value);" Item "int SSL_check_private_key(const SSL *ssl);" Item "void SSL_clear(SSL *ssl);" Item "long SSL_clear_num_renegotiations(SSL *ssl);" Item "int SSL_connect(SSL *ssl);" Item "void SSL_copy_session_id(SSL *t, const SSL *f);" Item "long SSL_ctrl(SSL *ssl, int cmd, long larg, char *parg);" Item "int SSL_do_handshake(SSL *ssl);" Item "SSL *SSL_dup(SSL *ssl);" Item "STACK *SSL_dup_CA_list(STACK *sk);" Item "void SSL_free(SSL *ssl);" Item "SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl);" Item "char *SSL_get_app_data(SSL *ssl);" Item "X509 *SSL_get_certificate(const SSL *ssl);" Item "const char *SSL_get_cipher(const SSL *ssl);" Item "int SSL_get_cipher_bits(const SSL *ssl, int *alg_bits);" Item "char *SSL_get_cipher_list(const SSL *ssl, int n);" Item "char *SSL_get_cipher_name(const SSL *ssl);" Item "char *SSL_get_cipher_version(const SSL *ssl);" Item "STACK *SSL_get_ciphers(const SSL *ssl);" Item "STACK *SSL_get_client_CA_list(const SSL *ssl);" Item "SSL_CIPHER *SSL_get_current_cipher(SSL *ssl);" Item "long SSL_get_default_timeout(const SSL *ssl);" Item "int SSL_get_error(const SSL *ssl, int i);" Item "char *SSL_get_ex_data(const SSL *ssl, int idx);" Item "int SSL_get_ex_data_X509_STORE_CTX_idx(void);" Item "int SSL_get_ex_new_index(long argl, char *argp, int (*new_func);(void), int (*dup_func)(void), void (*free_func)(void))" Item "int SSL_get_fd(const SSL *ssl);" Item "void (*SSL_get_info_callback(const SSL *ssl);)()" Item "STACK *SSL_get_peer_cert_chain(const SSL *ssl);" Item "X509 *SSL_get_peer_certificate(const SSL *ssl);" Item "EVP_PKEY *SSL_get_privatekey(SSL *ssl);" Item "int SSL_get_quiet_shutdown(const SSL *ssl);" Item "BIO *SSL_get_rbio(const SSL *ssl);" Item "int SSL_get_read_ahead(const SSL *ssl);" Item "SSL_SESSION *SSL_get_session(const SSL *ssl);" Item "char *SSL_get_shared_ciphers(const SSL *ssl, char *buf, int len);" Item "int SSL_get_shutdown(const SSL *ssl);" Item "SSL_METHOD *SSL_get_ssl_method(SSL *ssl);" Item "int SSL_get_state(const SSL *ssl);" Item "long SSL_get_time(const SSL *ssl);" Item "long SSL_get_timeout(const SSL *ssl);" Item "int (*SSL_get_verify_callback(const SSL *ssl))(int,X509_STORE_CTX *)" Item "int SSL_get_verify_mode(const SSL *ssl);" Item "long SSL_get_verify_result(const SSL *ssl);" Item "char *SSL_get_version(const SSL *ssl);" Item "BIO *SSL_get_wbio(const SSL *ssl);" Item "int SSL_in_accept_init(SSL *ssl);" Item "int SSL_in_before(SSL *ssl);" Item "int SSL_in_connect_init(SSL *ssl);" Item "int SSL_in_init(SSL *ssl);" Item "int SSL_is_init_finished(SSL *ssl);" Item "STACK *SSL_load_client_CA_file(char *file);" Item "void SSL_load_error_strings(void);" Item "SSL *SSL_new(SSL_CTX *ctx);" Item "long SSL_num_renegotiations(SSL *ssl);" Item "int SSL_peek(SSL *ssl, void *buf, int num);" Item "int SSL_pending(const SSL *ssl);" Item "int SSL_read(SSL *ssl, void *buf, int num);" Item "int SSL_renegotiate(SSL *ssl);" Item "char *SSL_rstate_string(SSL *ssl);" Item "char *SSL_rstate_string_long(SSL *ssl);" Item "long SSL_session_reused(SSL *ssl);" Item "void SSL_set_accept_state(SSL *ssl);" Item "void SSL_set_app_data(SSL *ssl, char *arg);" Item "void SSL_set_bio(SSL *ssl, BIO *rbio, BIO *wbio);" Item "int SSL_set_cipher_list(SSL *ssl, char *str);" Item "void SSL_set_client_CA_list(SSL *ssl, STACK *list);" Item "void SSL_set_connect_state(SSL *ssl);" Item "int SSL_set_ex_data(SSL *ssl, int idx, char *arg);" Item "int SSL_set_fd(SSL *ssl, int fd);" Item "void SSL_set_info_callback(SSL *ssl, void (*cb);(void))" Item "void 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));" Item "void SSL_set_msg_callback_arg(SSL *ctx, void *arg);" Item "void SSL_set_options(SSL *ssl, unsigned long op);" Item "void SSL_set_quiet_shutdown(SSL *ssl, int mode);" Item "void SSL_set_read_ahead(SSL *ssl, int yes);" Item "int SSL_set_rfd(SSL *ssl, int fd);" Item "int SSL_set_session(SSL *ssl, SSL_SESSION *session);" Item "void SSL_set_shutdown(SSL *ssl, int mode);" Item "int SSL_set_ssl_method(SSL *ssl, SSL_METHOD *meth);" Item "void SSL_set_time(SSL *ssl, long t);" Item "void SSL_set_timeout(SSL *ssl, long t);" Item "void SSL_set_verify(SSL *ssl, int mode, int (*callback);(void))" Item "void SSL_set_verify_result(SSL *ssl, long arg);" Item "int SSL_set_wfd(SSL *ssl, int fd);" Item "int SSL_shutdown(SSL *ssl);" Item "int SSL_state(const SSL *ssl);" Item "char *SSL_state_string(const SSL *ssl);" Item "char *SSL_state_string_long(const SSL *ssl);" Item "long SSL_total_renegotiations(SSL *ssl);" Item "int SSL_use_PrivateKey(SSL *ssl, EVP_PKEY *pkey);" Item "int SSL_use_PrivateKey_ASN1(int type, SSL *ssl, unsigned char *d, long len);" Item "int SSL_use_PrivateKey_file(SSL *ssl, char *file, int type);" Item "int SSL_use_RSAPrivateKey(SSL *ssl, RSA *rsa);" Item "int SSL_use_RSAPrivateKey_ASN1(SSL *ssl, unsigned char *d, long len);" Item "int SSL_use_RSAPrivateKey_file(SSL *ssl, char *file, int type);" Item "int SSL_use_certificate(SSL *ssl, X509 *x);" Item "int SSL_use_certificate_ASN1(SSL *ssl, int len, unsigned char *d);" Item "int SSL_use_certificate_file(SSL *ssl, char *file, int type);" Item "int SSL_version(const SSL *ssl);" Item "int SSL_want(const SSL *ssl);" Item "int SSL_want_nothing(const SSL *ssl);" Item "int SSL_want_read(const SSL *ssl);" Item "int SSL_want_write(const SSL *ssl);" Item "int SSL_want_x509_lookup(const SSL *ssl);" Item "int SSL_write(SSL *ssl, const void *buf, int num);"

Header "SEE ALSO" \fIopenssl\|(1), crypto\|(3), \fISSL_accept\|(3), SSL_clear\|(3), \fISSL_connect\|(3), \fISSL_CIPHER_get_name\|(3), \fISSL_COMP_add_compression_method\|(3), \fISSL_CTX_add_extra_chain_cert\|(3), \fISSL_CTX_add_session\|(3), \fISSL_CTX_ctrl\|(3), \fISSL_CTX_flush_sessions\|(3), \fISSL_CTX_get_ex_new_index\|(3), \fISSL_CTX_get_verify_mode\|(3), \fISSL_CTX_load_verify_locations\|(3) \fISSL_CTX_new\|(3), \fISSL_CTX_sess_number\|(3), \fISSL_CTX_sess_set_cache_size\|(3), \fISSL_CTX_sess_set_get_cb\|(3), \fISSL_CTX_sessions\|(3), \fISSL_CTX_set_cert_store\|(3), \fISSL_CTX_set_cert_verify_callback\|(3), \fISSL_CTX_set_cipher_list\|(3), \fISSL_CTX_set_client_CA_list\|(3), \fISSL_CTX_set_client_cert_cb\|(3), \fISSL_CTX_set_default_passwd_cb\|(3), \fISSL_CTX_set_generate_session_id\|(3), \fISSL_CTX_set_info_callback\|(3), \fISSL_CTX_set_max_cert_list\|(3), \fISSL_CTX_set_mode\|(3), \fISSL_CTX_set_msg_callback\|(3), \fISSL_CTX_set_options\|(3), \fISSL_CTX_set_quiet_shutdown\|(3), \fISSL_CTX_set_session_cache_mode\|(3), \fISSL_CTX_set_session_id_context\|(3), \fISSL_CTX_set_ssl_version\|(3), \fISSL_CTX_set_timeout\|(3), \fISSL_CTX_set_tmp_rsa_callback\|(3), \fISSL_CTX_set_tmp_dh_callback\|(3), \fISSL_CTX_set_verify\|(3), \fISSL_CTX_use_certificate\|(3), \fISSL_alert_type_string\|(3), \fISSL_do_handshake\|(3), \fISSL_get_SSL_CTX\|(3), \fISSL_get_ciphers\|(3), \fISSL_get_client_CA_list\|(3), \fISSL_get_default_timeout\|(3), \fISSL_get_error\|(3), \fISSL_get_ex_data_X509_STORE_CTX_idx\|(3), \fISSL_get_ex_new_index\|(3), \fISSL_get_fd\|(3), \fISSL_get_peer_cert_chain\|(3), \fISSL_get_rbio\|(3), \fISSL_get_session\|(3), \fISSL_get_verify_result\|(3), \fISSL_get_version\|(3), \fISSL_library_init\|(3), \fISSL_load_client_CA_file\|(3), \fISSL_new\|(3), \fISSL_pending\|(3), \fISSL_read\|(3), \fISSL_rstate_string\|(3), \fISSL_session_reused\|(3), \fISSL_set_bio\|(3), \fISSL_set_connect_state\|(3), \fISSL_set_fd\|(3), \fISSL_set_session\|(3), \fISSL_set_shutdown\|(3), \fISSL_shutdown\|(3), \fISSL_state_string\|(3), \fISSL_want\|(3), \fISSL_write\|(3), \fISSL_SESSION_free\|(3), \fISSL_SESSION_get_ex_new_index\|(3), \fISSL_SESSION_get_time\|(3), \fId2i_SSL_SESSION\|(3) Header "HISTORY" The ssl\|(3) document appeared in OpenSSL 0.9.2