Allow IPv6 address entry in tools>ping - Loosens valid character check
[tomato/davidwu.git] / release / src / router / openssl / doc / ssl / SSL_library_init.pod
blob8766776fea9f73b5cc2d179379ef1df3ccda0287
1 =pod
3 =head1 NAME
5 SSL_library_init, OpenSSL_add_ssl_algorithms, SSLeay_add_ssl_algorithms
6 - initialize SSL library by registering algorithms
8 =head1 SYNOPSIS
10  #include <openssl/ssl.h>
12  int SSL_library_init(void);
13  #define OpenSSL_add_ssl_algorithms()    SSL_library_init()
14  #define SSLeay_add_ssl_algorithms()     SSL_library_init()
16 =head1 DESCRIPTION
18 SSL_library_init() registers the available SSL/TLS ciphers and digests.
20 OpenSSL_add_ssl_algorithms() and SSLeay_add_ssl_algorithms() are synonyms
21 for SSL_library_init().
23 =head1 NOTES
25 SSL_library_init() must be called before any other action takes place.
26 SSL_library_init() is not reentrant. 
28 =head1 WARNING
30 SSL_library_init() adds ciphers and digests used directly and indirectly by
31 SSL/TLS.
33 =head1 EXAMPLES
35 A typical TLS/SSL application will start with the library initialization,
36 and provide readable error messages.
38  SSL_load_error_strings();                /* readable error messages */
39  SSL_library_init();                      /* initialize library */
41 =head1 RETURN VALUES
43 SSL_library_init() always returns "1", so it is safe to discard the return
44 value.
46 =head1 NOTES
48 OpenSSL 0.9.8o and 1.0.0a and later added SHA2 algorithms to SSL_library_init().
49 Applications which need to use SHA2 in earlier versions of OpenSSL should call
50 OpenSSL_add_all_algorithms() as well.
52 =head1 SEE ALSO
54 L<ssl(3)|ssl(3)>, L<SSL_load_error_strings(3)|SSL_load_error_strings(3)>,
55 L<RAND_add(3)|RAND_add(3)>
57 =cut