SSL_library_init(3ssl)

1SSL_library_init(3)                 OpenSSL                SSL_library_init(3)
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NAME

6       SSL_library_init, OpenSSL_add_ssl_algorithms, SSLeay_add_ssl_algorithms
7       - initialize SSL library by registering algorithms
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SYNOPSIS

10        #include <openssl/ssl.h>
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12        int SSL_library_init(void);
13        #define OpenSSL_add_ssl_algorithms()    SSL_library_init()
14        #define SSLeay_add_ssl_algorithms()     SSL_library_init()
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DESCRIPTION

17       SSL_library_init() registers the available ciphers and digests.
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19       OpenSSL_add_ssl_algorithms() and SSLeay_add_ssl_algorithms() are syn‐
20       onyms for SSL_library_init().
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NOTES

23       SSL_library_init() must be called before any other action takes place.
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WARNING

26       SSL_library_init() only registers ciphers. Another important initial‐
27       ization is the seeding of the PRNG (Pseudo Random Number Generator),
28       which has to be performed separately.
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EXAMPLES

31       A typical TLS/SSL application will start with the library initializa‐
32       tion, will provide readable error messages and will seed the PRNG.
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34        SSL_load_error_strings();                /* readable error messages */
35        SSL_library_init();                      /* initialize library */
36        actions_to_seed_PRNG();
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RETURN VALUES

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