path: root/crypto/gcm.c

/*
 * GCM: Galois/Counter Mode.
 *
 * Copyright (c) 2007 Nokia Siemens Networks - Mikko Herranen <mh1@iki.fi>
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 as published
 * by the Free Software Foundation.
 */

#include <crypto/gf128mul.h>
#include <crypto/internal/aead.h>
#include <crypto/internal/skcipher.h>
#include <crypto/internal/hash.h>
#include <crypto/scatterwalk.h>
#include <crypto/hash.h>
#include "internal.h"
#include <linux/completion.h>
#include <linux/err.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/slab.h>

struct gcm_instance_ctx {
	struct crypto_skcipher_spawn ctr;
	struct crypto_ahash_spawn ghash;
};

struct crypto_gcm_ctx {
	struct crypto_ablkcipher *ctr;
	struct crypto_ahash *ghash;
};

struct crypto_rfc4106_ctx {
	struct crypto_aead *child;
	u8 nonce[4];
};

struct crypto_rfc4543_instance_ctx {
	struct crypto_aead_spawn aead;
	struct crypto_skcipher_spawn null;
};

struct crypto_rfc4543_ctx {
	struct crypto_aead *child;
	struct crypto_blkcipher *null;
	u8 nonce[4];
};

struct crypto_rfc4543_req_ctx {
	u8 auth_tag[16];
	u8 assocbuf[32];
	struct scatterlist cipher[1];
	struct scatterlist payload[2];
	struct scatterlist assoc[2];
	struct aead_request subreq;
};

struct crypto_gcm_ghash_ctx {
	unsigned int cryptlen;