1: =pod
    2: 
    3: =head1 NAME
    4: 
    5: SSL_library_init, OpenSSL_add_ssl_algorithms, SSLeay_add_ssl_algorithms
    6: - initialize SSL library by registering algorithms
    7: 
    8: =head1 SYNOPSIS
    9: 
   10:  #include <openssl/ssl.h>
   11: 
   12:  int SSL_library_init(void);
   13:  #define OpenSSL_add_ssl_algorithms()    SSL_library_init()
   14:  #define SSLeay_add_ssl_algorithms()     SSL_library_init()
   15: 
   16: =head1 DESCRIPTION
   17: 
   18: SSL_library_init() registers the available ciphers and digests.
   19: 
   20: OpenSSL_add_ssl_algorithms() and SSLeay_add_ssl_algorithms() are synonyms
   21: for SSL_library_init().
   22: 
   23: =head1 NOTES
   24: 
   25: SSL_library_init() must be called before any other action takes place.
   26: 
   27: =head1 WARNING
   28: 
   29: SSL_library_init() only registers ciphers. Another important initialization
   30: is the seeding of the PRNG (Pseudo Random Number Generator), which has to
   31: be performed separately.
   32: 
   33: =head1 EXAMPLES
   34: 
   35: A typical TLS/SSL application will start with the library initialization,
   36: will provide readable error messages and will seed the PRNG.
   37: 
   38:  SSL_load_error_strings();                /* readable error messages */
   39:  SSL_library_init();                      /* initialize library */
   40:  actions_to_seed_PRNG(); 
   41: 
   42: =head1 RETURN VALUES
   43: 
   44: SSL_library_init() always returns "1", so it is safe to discard the return
   45: value.
   46: 
   47: =head1 SEE ALSO
   48: 
   49: L<ssl(3)|ssl(3)>, L<SSL_load_error_strings(3)|SSL_load_error_strings(3)>,
   50: L<RAND_add(3)|RAND_add(3)>
   51: 
   52: =cut