CRYPT_GENHASH_IMPL(3C) Standard C Library Functions CRYPT_GENHASH_IMPL(3C)
NAME
crypt_genhash_impl - generate encrypted password
SYNOPSIS
#include <crypt.h>
char *crypt_genhash_impl(
char *ctbuffer,
size_t ctbufflen,
const char *plaintext,
const char *salt,
const char **params);
DESCRIPTION
The
crypt_genhash_impl() function is called by
crypt(3C) to generate the
encrypted password
plaintext.
The
ctbuffer argument is a pointer to an MT-safe buffer of
ctbufflen size
that is used to return the result.
The
salt argument is the salt used in encoding.
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(5). The remaining elements of
params represent strings of the
form <
parameter>[=<
value>] to allow passing in additional information
from the
crypt.conf entry, such as specifying rounds information
"
rounds=4096".
The
crypt_genhash_impl() function must not
free(3C) ctbufflen on error.
RETURN VALUES
Upon successful completion,
crypt_genhash_impl() returns a pointer to the
encoded version of
plaintext. Otherwise a null pointer is returned and
errno is set to indicate the error.
ERRORS
The
crypt_genhash_impl() function will fail if:
EINVAL The configuration file
crypt.conf contains an invalid entry.
ELIBACC The required shared library was not found.
ENOMEM There is insufficient memory to perform hashing.
ATTRIBUTES
See
attributes(7) for descriptions of the following attributes:
+--------------------+-----------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+--------------------+-----------------+
|Interface Stability | Evolving |
+--------------------+-----------------+
|MT-Level | MT-Safe |
+--------------------+-----------------+
SEE ALSO
passwd(1),
crypt(3C),
crypt_gensalt_impl(3C),
free(3C),
getpassphrase(3C),
crypt.conf(5),
passwd(5),
attributes(7) June 10, 2002
CRYPT_GENHASH_IMPL(3C)