linux/security/keys/dh.c

// SPDX-License-Identifier: GPL-2.0-or-later
/* Crypto operations using stored keys
 *
 * Copyright (c) 2016, Intel Corporation
 */

#include <linux/slab.h>
#include <linux/uaccess.h>
#include <linux/scatterlist.h>
#include <linux/crypto.h>
#include <crypto/hash.h>
#include <crypto/kpp.h>
#include <crypto/dh.h>
#include <crypto/kdf_sp800108.h>
#include <keys/user-type.h>
#include "internal.h"

static ssize_t dh_data_from_key(key_serial_t keyid, const void **data)
{ … }

static void dh_free_data(struct dh *dh)
{ … }

static int kdf_alloc(struct crypto_shash **hash, char *hashname)
{ … }

static void kdf_dealloc(struct crypto_shash *hash)
{ … }

static int keyctl_dh_compute_kdf(struct crypto_shash *hash,
				 char __user *buffer, size_t buflen,
				 uint8_t *kbuf, size_t kbuflen)
{ … }

long __keyctl_dh_compute(struct keyctl_dh_params __user *params,
			 char __user *buffer, size_t buflen,
			 struct keyctl_kdf_params *kdfcopy)
{ … }

long keyctl_dh_compute(struct keyctl_dh_params __user *params,
		       char __user *buffer, size_t buflen,
		       struct keyctl_kdf_params __user *kdf)
{ … }