linux/crypto/rsa_helper.c

// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * RSA key extract helper
 *
 * Copyright (c) 2015, Intel Corporation
 * Authors: Tadeusz Struk <[email protected]>
 */
#include <linux/kernel.h>
#include <linux/export.h>
#include <linux/err.h>
#include <linux/fips.h>
#include <crypto/internal/rsa.h>
#include "rsapubkey.asn1.h"
#include "rsaprivkey.asn1.h"

int rsa_get_n(void *context, size_t hdrlen, unsigned char tag,
	      const void *value, size_t vlen)
{ … }

int rsa_get_e(void *context, size_t hdrlen, unsigned char tag,
	      const void *value, size_t vlen)
{ … }

int rsa_get_d(void *context, size_t hdrlen, unsigned char tag,
	      const void *value, size_t vlen)
{ … }

int rsa_get_p(void *context, size_t hdrlen, unsigned char tag,
	      const void *value, size_t vlen)
{ … }

int rsa_get_q(void *context, size_t hdrlen, unsigned char tag,
	      const void *value, size_t vlen)
{ … }

int rsa_get_dp(void *context, size_t hdrlen, unsigned char tag,
	       const void *value, size_t vlen)
{ … }

int rsa_get_dq(void *context, size_t hdrlen, unsigned char tag,
	       const void *value, size_t vlen)
{ … }

int rsa_get_qinv(void *context, size_t hdrlen, unsigned char tag,
		 const void *value, size_t vlen)
{ … }

/**
 * rsa_parse_pub_key() - decodes the BER encoded buffer and stores in the
 *                       provided struct rsa_key, pointers to the raw key as is,
 *                       so that the caller can copy it or MPI parse it, etc.
 *
 * @rsa_key:	struct rsa_key key representation
 * @key:	key in BER format
 * @key_len:	length of key
 *
 * Return:	0 on success or error code in case of error
 */
int rsa_parse_pub_key(struct rsa_key *rsa_key, const void *key,
		      unsigned int key_len)
{ … }
EXPORT_SYMBOL_GPL(…);

/**
 * rsa_parse_priv_key() - decodes the BER encoded buffer and stores in the
 *                        provided struct rsa_key, pointers to the raw key
 *                        as is, so that the caller can copy it or MPI parse it,
 *                        etc.
 *
 * @rsa_key:	struct rsa_key key representation
 * @key:	key in BER format
 * @key_len:	length of key
 *
 * Return:	0 on success or error code in case of error
 */
int rsa_parse_priv_key(struct rsa_key *rsa_key, const void *key,
		       unsigned int key_len)
{ … }
EXPORT_SYMBOL_GPL(…);