SSL_library_init, OpenSSL_add_ssl_algorithms, SSLeay_add_ssl_algorithms - initialize SSL library by registering algorithms
#include <openssl/ssl.h>
int SSL_library_init(void); #define OpenSSL_add_ssl_algorithms() SSL_library_init() #define SSLeay_add_ssl_algorithms() SSL_library_init()
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()
.
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.
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 */
SSL_library_init()
always returns "1", so it is safe to discard the return
value.
OpenSSL 0.9.8o and 1.0.0a and later added SHA2 algorithms to SSL_library_init()
.
Applications which need to use SHA2 in earlier versions of OpenSSL should call
OpenSSL_add_all_algorithms()
as well.