CRYPT_PREFERRED_METHOD(3) | Library Functions Manual | CRYPT_PREFERRED_METHOD(3) |
NAME
crypt_preferred_method
—
get the prefix of the preferred hash method
LIBRARY
Crypt Library (libcrypt, -lcrypt)
SYNOPSIS
#include
<crypt.h>
const char*
crypt_preferred_method
(void);
DESCRIPTION
crypt_preferred_method
is a convenience
function to get the prefix of the preferred hash method. If a preferred
method is available, it is the same as the one also used by the
crypt_gensalt functions
, if their given
prefix parameter is NULL.
RETURN VALUES
The string returned equals the prefix of the preferred hash
method. If no preferred hash method is available it is NULL. It
is safe to
pass the string returned by crypt_preferred_method
directly to crypt_gensalt
without prior
string-sanitizing nor NULL-pointer checks.
FEATURE TEST MACROS
<crypt.h>
will
define the macro CRYPT_PREFERRED_METHOD_AVAILABLE
if
crypt_preferred_method
is available in the current
version of libxcrypt.
PORTABILITY NOTES
The function crypt_preferred_method
is not
part of any standard. It was added to libxcrypt in version 4.4.0.
ATTRIBUTES
For an explanation of the terms used in this section, see attributes(7).
Interface | Attribute | Value |
Thread safety | MT-Safe |
SEE ALSO
November 16, 2018 | libxcrypt |