NAME
SSL_library_init,
OpenSSL_add_ssl_algorithms,
SSLeay_add_ssl_algorithms —
initialize SSL library by registering
algorithms
SYNOPSIS
#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()
DESCRIPTION
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().
NOTES
SSL_library_init() must be called before
any other action takes place. SSL_library_init() is
not reentrant.
WARNING
SSL_library_init() adds ciphers and
digests used directly and indirectly by SSL/TLS.
RETURN VALUES
SSL_library_init() always returns 1, so it
is safe to discard the return value.
EXAMPLES
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 */
NOTES
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.