SSL_library_init(3) - phpMan

SSL_library_init(3)                          OpenSSL                          SSL_library_init(3)



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.

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 */

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

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.

SEE ALSO
       ssl(3), SSL_load_error_strings(3), RAND_add(3)



1.0.2k                                      2017-01-26                        SSL_library_init(3)

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