crypt_gensalt_impl(3C) Standard C Library Functions crypt_gensalt_impl(3C)NAMEcrypt_gensalt_impl - generate salt for password encryption
SYNOPSIS
#include <crypt.h>
char *crypt_gensalt_impl(char *gsbuffer, size_t gsbufflen, const char
*oldsalt, const struct passwd *userinfo, const char **params);
DESCRIPTION
The crypt_gensalt_impl() function is called by crypt_gensalt(3C) to
generate the salt for password encryption.
The gsbuffer argument is a pointer to an MT-safe buffer of size gsbuf‐
flen.
The oldsalt and userinfo arguments are passed unchanged from crypt_gen‐
salt(3C).
The params argument is an argv-like null terminated vector of type char
*. The first element of params represents the mechanism token name from
crypt.conf(4). The remaining elements of params represent strings of
the form <parameter>[=<value>] to allow passing in additional informa‐
tion from the crypt.conf entry, such as specifying rounds information
"rounds=4096".
The value returned by crypt_gensalt_impl() points to a thread-specific
buffer to be freed by the caller of crypt_gensalt(3C) after calling
crypt(3C).
RETURN VALUES
Upon successful completion, crypt_gensalt_impl() returns a pointer to
the new salt. Otherwise a null pointer is returned and errno is set to
indicate the error.
ERRORS
The crypt_gensalt_impl() function will fail if:
EINVAL The configuration file crypt.conf contains an invalid
entry.
ELIBACC The required crypt shared library was not found.
ENOMEM There is insufficient memory to perform hashing.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
┌─────────────────────────────┬─────────────────────────────┐
│ ATTRIBUTE TYPE │ ATTRIBUTE VALUE │
├─────────────────────────────┼─────────────────────────────┤
│Interface Stability │Evolving │
├─────────────────────────────┼─────────────────────────────┤
│MT-Level │MT-Safe │
└─────────────────────────────┴─────────────────────────────┘
SEE ALSOpasswd(1), crypt(3C), crypt_genhash_impl(3C), crypt_gensalt(3C), get‐
passphrase(3C), crypt.conf(4), passwd(4), attributes(5)SunOS 5.10 10 Jun 2002 crypt_gensalt_impl(3C)