HP OpenVMS Systems Documentation

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HP Open Source Security for OpenVMS Volume 2: HP SSL for OpenVMS > SSL Application Programming Interface (API) Reference

SSL_library_init

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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 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.

WARNING

SSL_library_init() only registers ciphers. Another important initialization is the seeding of the PRNG (Pseudo Random Number Generator), which has to be performed separately.

EXAMPLES

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

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

RETURN VALUES

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

SEE ALSO

ssl(3), SSL_load_error_strings(3), RAND_add(3)