SSL_library_init(3) - Manual pages

NAME

SSL_library_init, OpenSSL_add_ssl_algorithms, SSLeay_add_ssl_algorithms — initialize SSL library by registering algorithms

int
SSL_library_init(void);

int
OpenSSL_add_ssl_algorithms(void);

int
SSLeay_add_ssl_algorithms(void);

SSL_library_init() registers the available SSL/TLS ciphers and digests.

OpenSSL_add_ssl_algorithms() and SSLeay_add_ssl_algorithms() are synonyms for SSL_library_init() and are implemented as macros.

SSL_library_init() must be called before any other action takes place. SSL_library_init() is not reentrant.

SSL_library_init() adds ciphers and digests used directly and indirectly by SSL/TLS.

SSL_library_init() always returns 1, so it is safe to discard the return value.

A typical TLS/SSL application will start with the library initialization, and provide readable error messages.

SSL_load_error_strings();                /* readable error messages */
SSL_library_init();                      /* initialize library */

SSLeay_add_ssl_algorithms() first appeared in SSLeay 0.8.0 and has been available since OpenBSD 2.4.

SSL_library_init() first appeared in OpenSSL 0.9.2b and has been available since OpenBSD 2.6.

OpenSSL_add_ssl_algorithms() first appeared in OpenSSL 0.9.5 and has been available since OpenBSD 2.7.