linux/crypto/asymmetric_keys/x509_public_key.c

// SPDX-License-Identifier: GPL-2.0-or-later
/* Instantiate a public key crypto key from an X.509 Certificate
 *
 * Copyright (C) 2012 Red Hat, Inc. All Rights Reserved.
 * Written by David Howells ([email protected])
 */

#define pr_fmt(fmt) …
#include <crypto/hash.h>
#include <keys/asymmetric-parser.h>
#include <keys/asymmetric-subtype.h>
#include <keys/system_keyring.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/string.h>
#include "asymmetric_keys.h"
#include "x509_parser.h"

/*
 * Set up the signature parameters in an X.509 certificate.  This involves
 * digesting the signed data and extracting the signature.
 */
int x509_get_sig_params(struct x509_certificate *cert)
{ … }

/*
 * Check for self-signedness in an X.509 cert and if found, check the signature
 * immediately if we can.
 */
int x509_check_for_self_signed(struct x509_certificate *cert)
{ … }

/*
 * Attempt to parse a data blob for a key as an X509 certificate.
 */
static int x509_key_preparse(struct key_preparsed_payload *prep)
{ … }

static struct asymmetric_key_parser x509_key_parser = …;

/*
 * Module stuff
 */
static int __init x509_key_init(void)
{ … }

static void __exit x509_key_exit(void)
{ … }

module_init(…) …;
module_exit(x509_key_exit);

MODULE_DESCRIPTION(…) …;
MODULE_AUTHOR(…) …;
MODULE_LICENSE(…) …;