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SSL_library_init

Section: OpenSSL (3)
Updated: 2015-01-20
Index Return to Main Contents
 

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)


 

Index

NAME
SYNOPSIS
DESCRIPTION
NOTES
WARNING
EXAMPLES
RETURN VALUES
NOTES
SEE ALSO


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