1 .\" $NetBSD: SSL_library_init.3,v 1.14 2015/06/12 17:01:14 christos Exp $
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135 .\" ========================================================================
137 .IX Title "SSL_library_init 3"
138 .TH SSL_library_init 3 "2011-06-05" "1.0.1n" "OpenSSL"
139 .\" For nroff, turn off justification. Always turn off hyphenation; it makes
140 .\" way too many mistakes in technical documents.
144 SSL_library_init, OpenSSL_add_ssl_algorithms, SSLeay_add_ssl_algorithms
145 \&\- initialize SSL library by registering algorithms
149 .IX Header "SYNOPSIS"
151 \& #include <openssl/ssl.h>
153 \& int SSL_library_init(void);
154 \& #define OpenSSL_add_ssl_algorithms() SSL_library_init()
155 \& #define SSLeay_add_ssl_algorithms() SSL_library_init()
158 .IX Header "DESCRIPTION"
159 \&\fISSL_library_init()\fR registers the available \s-1SSL/TLS\s0 ciphers and digests.
161 \&\fIOpenSSL_add_ssl_algorithms()\fR and \fISSLeay_add_ssl_algorithms()\fR are synonyms
162 for \fISSL_library_init()\fR.
165 \&\fISSL_library_init()\fR must be called before any other action takes place.
166 \&\fISSL_library_init()\fR is not reentrant.
169 \&\fISSL_library_init()\fR adds ciphers and digests used directly and indirectly by
172 .IX Header "EXAMPLES"
173 A typical \s-1TLS/SSL\s0 application will start with the library initialization,
174 and provide readable error messages.
177 \& SSL_load_error_strings(); /* readable error messages */
178 \& SSL_library_init(); /* initialize library */
181 .IX Header "RETURN VALUES"
182 \&\fISSL_library_init()\fR always returns \*(L"1\*(R", so it is safe to discard the return
186 OpenSSL 0.9.8o and 1.0.0a and later added \s-1SHA2\s0 algorithms to \fISSL_library_init()\fR.
187 Applications which need to use \s-1SHA2\s0 in earlier versions of OpenSSL should call
188 \&\fIOpenSSL_add_all_algorithms()\fR as well.
190 .IX Header "SEE ALSO"
191 \&\fIssl\fR\|(3), \fISSL_load_error_strings\fR\|(3),
192 \&\fIRAND_add\fR\|(3)