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)
