linux/crypto/asymmetric_keys/pkcs8_parser.c

// SPDX-License-Identifier: GPL-2.0-or-later
/* PKCS#8 Private Key parser [RFC 5208].
 *
 * Copyright (C) 2016 Red Hat, Inc. All Rights Reserved.
 * Written by David Howells ([email protected])
 */

#define pr_fmt(fmt) …
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/export.h>
#include <linux/slab.h>
#include <linux/err.h>
#include <linux/oid_registry.h>
#include <keys/asymmetric-subtype.h>
#include <keys/asymmetric-parser.h>
#include <crypto/public_key.h>
#include "pkcs8.asn1.h"

struct pkcs8_parse_context { … };

/*
 * Note an OID when we find one for later processing when we know how to
 * interpret it.
 */
int pkcs8_note_OID(void *context, size_t hdrlen,
		   unsigned char tag,
		   const void *value, size_t vlen)
{ … }

/*
 * Note the version number of the ASN.1 blob.
 */
int pkcs8_note_version(void *context, size_t hdrlen,
		       unsigned char tag,
		       const void *value, size_t vlen)
{ … }

/*
 * Note the public algorithm.
 */
int pkcs8_note_algo(void *context, size_t hdrlen,
		    unsigned char tag,
		    const void *value, size_t vlen)
{ … }

/*
 * Note the key data of the ASN.1 blob.
 */
int pkcs8_note_key(void *context, size_t hdrlen,
		   unsigned char tag,
		   const void *value, size_t vlen)
{ … }

/*
 * Parse a PKCS#8 private key blob.
 */
static struct public_key *pkcs8_parse(const void *data, size_t datalen)
{ … }

/*
 * Attempt to parse a data blob for a key as a PKCS#8 private key.
 */
static int pkcs8_key_preparse(struct key_preparsed_payload *prep)
{ … }

static struct asymmetric_key_parser pkcs8_key_parser = …;

/*
 * Module stuff
 */
static int __init pkcs8_key_init(void)
{ … }

static void __exit pkcs8_key_exit(void)
{ … }

module_init(…) …;
module_exit(pkcs8_key_exit);

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