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OPENSSL_INIT_CRYPTO(3) DragonFly Library Functions Manual
OPENSSL_init_crypto - initialise the crypto library
OPENSSL_init_crypto(uint64_t options, const void *dummy);
This function is deprecated. It is never useful for any application
program to call it explicitly. The library automatically calls it
internally with an options argument of 0 whenever needed. It is safest
to assume that any function may do so.
To enable or disable the standard configuration file, instead use
OPENSSL_config(3) or OPENSSL_no_config(3), respectively. To load a non-
standard configuration file, refer to CONF_modules_load_file(3).
If OPENSSL_init_crypto() is called before any other crypto or ssl
functions, the crypto library is initialised by allocating various
internal resources, in particular calling ERR_load_crypto_strings(3),
OpenSSL_add_all_ciphers(3), and OpenSSL_add_all_digests(3).
The following options are supported:
At the end of the initialization, call OPENSSL_config(3) with a
NULL argument, loading the default configuration file.
Ignore any later calls to OPENSSL_config(3).
The other options flags defined by OpenSSL are all ignored by LibreSSL.
The dummy argument has no effect.
If this function is called more than once, none of the calls except the
first one have any effect.
OPENSSL_init_crypto() is intended to return 1 on success or 0 on error.
OPENSSL_init_crypto() first appeared in OpenSSL 1.1.0 and has been
available since OpenBSD 6.3.
OPENSSL_init_crypto() silently ignores almost all kinds of errors. In
particular, if memory allocation fails, initialisation is likely to
remain incomplete, the library may be in an inconsistent internal state,
but the return value will usually indicate success anyway. There is no
way for the application program to find out whether library
initialisation is actually complete, nor to get back to a consistent
state if it isn't.
DragonFly 5.9-DEVELOPMENT June 14, 2019 DragonFly 5.9-DEVELOPMENT