SSL_CTX_SET_CERT_CB(3ssl) OpenSSL SSL_CTX_SET_CERT_CB(3ssl) SSL_CTX_set_cert_cb, SSL_set_cert_cb - #include void SSL_CTX_set_cert_cb(SSL_CTX *c, int (*cert_cb)(SSL *ssl, void *arg), void *arg); void SSL_set_cert_cb(SSL *s, int (*cert_cb)(SSL *ssl, void *arg), void *arg); SSL_CTX_set_cert_cb() SSL_set_cert_cb() cert_cb arg . cert_cb (NULL) . cert_cb . . ssl . 1 . . . SSL_get_error(3) SSL_ERROR_WANT_X509_LOOKUP . cert_cb. cert_cb . SSL_use_certificate() SSL_use_PrivateKey() . SSL_add1_chain_cert(). SSL_certs_clear() SSL. ( ) . . . TLSv1.0 SHA1 TLSv1.2 SHA256 SHA256. . EC . SSL_CTX_set_cert_cb() SSL_set_cert_cb() . ssl(7), SSL_use_certificate(3), SSL_add1_chain_cert(3), SSL_get_client_CA_list(3), SSL_clear(3), SSL_free(3) 2014-2020 OpenSSL. . Apache 2.0 ( ""). . LICENSE . 3 . . : . 3.6.2 7 2026 SSL_CTX_SET_CERT_CB(3ssl)