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Commit 56e8e57f authored by Ondrej Mosnacek's avatar Ondrej Mosnacek Committed by Herbert Xu
Browse files

crypto: morus - Add common SIMD glue code for MORUS 



This patch adds a common glue code for optimized implementations of
MORUS AEAD algorithms.

Signed-off-by: default avatarOndrej Mosnacek <omosnacek@gmail.com>
Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
parent 4feb4c59

crypto/Kconfig

+16 −0
Original line number Diff line number Diff line
@@ -340,12 +340,28 @@ config CRYPTO_MORUS640 
	help

	  Support for the MORUS-640 dedicated AEAD algorithm.



config CRYPTO_MORUS640_GLUE

	tristate "MORUS-640 AEAD algorithm (glue for SIMD optimizations)"

	select CRYPTO_AEAD

	select CRYPTO_CRYPTD

	help

	  Common glue for SIMD optimizations of the MORUS-640 dedicated AEAD

	  algorithm.



config CRYPTO_MORUS1280

	tristate "MORUS-1280 AEAD algorithm"

	select CRYPTO_AEAD

	help

	  Support for the MORUS-1280 dedicated AEAD algorithm.



config CRYPTO_MORUS1280_GLUE

	tristate "MORUS-1280 AEAD algorithm (glue for SIMD optimizations)"

	select CRYPTO_AEAD

	select CRYPTO_CRYPTD

	help

	  Common glue for SIMD optimizations of the MORUS-1280 dedicated AEAD

	  algorithm.



config CRYPTO_SEQIV

	tristate "Sequence Number IV Generator"

	select CRYPTO_AEAD

crypto/Makefile

+2 −0
Original line number Diff line number Diff line
@@ -91,6 +91,8 @@ obj-$(CONFIG_CRYPTO_AEGIS128L) += aegis128l.o 
obj-$(CONFIG_CRYPTO_AEGIS256) += aegis256.o

obj-$(CONFIG_CRYPTO_MORUS640) += morus640.o

obj-$(CONFIG_CRYPTO_MORUS1280) += morus1280.o

obj-$(CONFIG_CRYPTO_MORUS640_GLUE) += morus640_glue.o

obj-$(CONFIG_CRYPTO_MORUS1280_GLUE) += morus1280_glue.o

obj-$(CONFIG_CRYPTO_PCRYPT) += pcrypt.o

obj-$(CONFIG_CRYPTO_CRYPTD) += cryptd.o

obj-$(CONFIG_CRYPTO_MCRYPTD) += mcryptd.o

crypto/morus1280_glue.c

0 → 100644
+302 −0
Original line number Diff line number Diff line 
/*

 * The MORUS-1280 Authenticated-Encryption Algorithm

 *   Common glue skeleton

 *

 * Copyright (c) 2016-2018 Ondrej Mosnacek <omosnacek@gmail.com>

 * Copyright (C) 2017-2018 Red Hat, Inc. All rights reserved.

 *

 * This program is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License as published by the Free

 * Software Foundation; either version 2 of the License, or (at your option)

 * any later version.

 */



#include <crypto/cryptd.h>

#include <crypto/internal/aead.h>

#include <crypto/internal/skcipher.h>

#include <crypto/morus1280_glue.h>

#include <crypto/scatterwalk.h>

#include <linux/err.h>

#include <linux/init.h>

#include <linux/kernel.h>

#include <linux/module.h>

#include <linux/scatterlist.h>

#include <asm/fpu/api.h>



struct morus1280_state {

	struct morus1280_block s[MORUS_STATE_BLOCKS];

};



struct morus1280_ops {

	int (*skcipher_walk_init)(struct skcipher_walk *walk,

				  struct aead_request *req, bool atomic);



	void (*crypt_blocks)(void *state, const void *src, void *dst,

			     unsigned int length);

	void (*crypt_tail)(void *state, const void *src, void *dst,

			   unsigned int length);

};



static void crypto_morus1280_glue_process_ad(

		struct morus1280_state *state,

		const struct morus1280_glue_ops *ops,

		struct scatterlist *sg_src, unsigned int assoclen)

{

	struct scatter_walk walk;

	struct morus1280_block buf;

	unsigned int pos = 0;



	scatterwalk_start(&walk, sg_src);

	while (assoclen != 0) {

		unsigned int size = scatterwalk_clamp(&walk, assoclen);

		unsigned int left = size;

		void *mapped = scatterwalk_map(&walk);

		const u8 *src = (const u8 *)mapped;



		if (pos + size >= MORUS1280_BLOCK_SIZE) {

			if (pos > 0) {

				unsigned int fill = MORUS1280_BLOCK_SIZE - pos;

				memcpy(buf.bytes + pos, src, fill);

				ops->ad(state, buf.bytes, MORUS1280_BLOCK_SIZE);

				pos = 0;

				left -= fill;

				src += fill;

			}



			ops->ad(state, src, left);

			src += left & ~(MORUS1280_BLOCK_SIZE - 1);

			left &= MORUS1280_BLOCK_SIZE - 1;

		}



		memcpy(buf.bytes + pos, src, left);



		pos += left;

		assoclen -= size;

		scatterwalk_unmap(mapped);

		scatterwalk_advance(&walk, size);

		scatterwalk_done(&walk, 0, assoclen);

	}



	if (pos > 0) {

		memset(buf.bytes + pos, 0, MORUS1280_BLOCK_SIZE - pos);

		ops->ad(state, buf.bytes, MORUS1280_BLOCK_SIZE);

	}

}



static void crypto_morus1280_glue_process_crypt(struct morus1280_state *state,

						struct morus1280_ops ops,

						struct aead_request *req)

{

	struct skcipher_walk walk;

	u8 *cursor_src, *cursor_dst;

	unsigned int chunksize, base;



	ops.skcipher_walk_init(&walk, req, false);



	while (walk.nbytes) {

		cursor_src = walk.src.virt.addr;

		cursor_dst = walk.dst.virt.addr;

		chunksize = walk.nbytes;



		ops.crypt_blocks(state, cursor_src, cursor_dst, chunksize);



		base = chunksize & ~(MORUS1280_BLOCK_SIZE - 1);

		cursor_src += base;

		cursor_dst += base;

		chunksize &= MORUS1280_BLOCK_SIZE - 1;



		if (chunksize > 0)

			ops.crypt_tail(state, cursor_src, cursor_dst,

				       chunksize);



		skcipher_walk_done(&walk, 0);

	}

}



int crypto_morus1280_glue_setkey(struct crypto_aead *aead, const u8 *key,

				 unsigned int keylen)

{

	struct morus1280_ctx *ctx = crypto_aead_ctx(aead);



	if (keylen == MORUS1280_BLOCK_SIZE) {

		memcpy(ctx->key.bytes, key, MORUS1280_BLOCK_SIZE);

	} else if (keylen == MORUS1280_BLOCK_SIZE / 2) {

		memcpy(ctx->key.bytes, key, keylen);

		memcpy(ctx->key.bytes + keylen, key, keylen);

	} else {

		crypto_aead_set_flags(aead, CRYPTO_TFM_RES_BAD_KEY_LEN);

		return -EINVAL;

	}



	return 0;

}

EXPORT_SYMBOL_GPL(crypto_morus1280_glue_setkey);



int crypto_morus1280_glue_setauthsize(struct crypto_aead *tfm,

				      unsigned int authsize)

{

	return (authsize <= MORUS_MAX_AUTH_SIZE) ? 0 : -EINVAL;

}

EXPORT_SYMBOL_GPL(crypto_morus1280_glue_setauthsize);



static void crypto_morus1280_glue_crypt(struct aead_request *req,

					struct morus1280_ops ops,

					unsigned int cryptlen,

					struct morus1280_block *tag_xor)

{

	struct crypto_aead *tfm = crypto_aead_reqtfm(req);

	struct morus1280_ctx *ctx = crypto_aead_ctx(tfm);

	struct morus1280_state state;



	kernel_fpu_begin();



	ctx->ops->init(&state, &ctx->key, req->iv);

	crypto_morus1280_glue_process_ad(&state, ctx->ops, req->src, req->assoclen);

	crypto_morus1280_glue_process_crypt(&state, ops, req);

	ctx->ops->final(&state, tag_xor, req->assoclen, cryptlen);



	kernel_fpu_end();

}



int crypto_morus1280_glue_encrypt(struct aead_request *req)

{

	struct crypto_aead *tfm = crypto_aead_reqtfm(req);

	struct morus1280_ctx *ctx = crypto_aead_ctx(tfm);

	struct morus1280_ops OPS = {

		.skcipher_walk_init = skcipher_walk_aead_encrypt,

		.crypt_blocks = ctx->ops->enc,

		.crypt_tail = ctx->ops->enc_tail,

	};



	struct morus1280_block tag = {};

	unsigned int authsize = crypto_aead_authsize(tfm);

	unsigned int cryptlen = req->cryptlen;



	crypto_morus1280_glue_crypt(req, OPS, cryptlen, &tag);



	scatterwalk_map_and_copy(tag.bytes, req->dst,

				 req->assoclen + cryptlen, authsize, 1);

	return 0;

}

EXPORT_SYMBOL_GPL(crypto_morus1280_glue_encrypt);



int crypto_morus1280_glue_decrypt(struct aead_request *req)

{

	static const u8 zeros[MORUS1280_BLOCK_SIZE] = {};



	struct crypto_aead *tfm = crypto_aead_reqtfm(req);

	struct morus1280_ctx *ctx = crypto_aead_ctx(tfm);

	struct morus1280_ops OPS = {

		.skcipher_walk_init = skcipher_walk_aead_decrypt,

		.crypt_blocks = ctx->ops->dec,

		.crypt_tail = ctx->ops->dec_tail,

	};



	struct morus1280_block tag;

	unsigned int authsize = crypto_aead_authsize(tfm);

	unsigned int cryptlen = req->cryptlen - authsize;



	scatterwalk_map_and_copy(tag.bytes, req->src,

				 req->assoclen + cryptlen, authsize, 0);



	crypto_morus1280_glue_crypt(req, OPS, cryptlen, &tag);



	return crypto_memneq(tag.bytes, zeros, authsize) ? -EBADMSG : 0;

}

EXPORT_SYMBOL_GPL(crypto_morus1280_glue_decrypt);



void crypto_morus1280_glue_init_ops(struct crypto_aead *aead,

				    const struct morus1280_glue_ops *ops)

{

	struct morus1280_ctx *ctx = crypto_aead_ctx(aead);

	ctx->ops = ops;

}

EXPORT_SYMBOL_GPL(crypto_morus1280_glue_init_ops);



int cryptd_morus1280_glue_setkey(struct crypto_aead *aead, const u8 *key,

				 unsigned int keylen)

{

	struct cryptd_aead **ctx = crypto_aead_ctx(aead);

	struct cryptd_aead *cryptd_tfm = *ctx;



	return crypto_aead_setkey(&cryptd_tfm->base, key, keylen);

}

EXPORT_SYMBOL_GPL(cryptd_morus1280_glue_setkey);



int cryptd_morus1280_glue_setauthsize(struct crypto_aead *aead,

				      unsigned int authsize)

{

	struct cryptd_aead **ctx = crypto_aead_ctx(aead);

	struct cryptd_aead *cryptd_tfm = *ctx;



	return crypto_aead_setauthsize(&cryptd_tfm->base, authsize);

}

EXPORT_SYMBOL_GPL(cryptd_morus1280_glue_setauthsize);



int cryptd_morus1280_glue_encrypt(struct aead_request *req)

{

	struct crypto_aead *aead = crypto_aead_reqtfm(req);

	struct cryptd_aead **ctx = crypto_aead_ctx(aead);

	struct cryptd_aead *cryptd_tfm = *ctx;



	aead = &cryptd_tfm->base;

	if (irq_fpu_usable() && (!in_atomic() ||

				 !cryptd_aead_queued(cryptd_tfm)))

		aead = cryptd_aead_child(cryptd_tfm);



	aead_request_set_tfm(req, aead);



	return crypto_aead_encrypt(req);

}

EXPORT_SYMBOL_GPL(cryptd_morus1280_glue_encrypt);



int cryptd_morus1280_glue_decrypt(struct aead_request *req)

{

	struct crypto_aead *aead = crypto_aead_reqtfm(req);

	struct cryptd_aead **ctx = crypto_aead_ctx(aead);

	struct cryptd_aead *cryptd_tfm = *ctx;



	aead = &cryptd_tfm->base;

	if (irq_fpu_usable() && (!in_atomic() ||

				 !cryptd_aead_queued(cryptd_tfm)))

		aead = cryptd_aead_child(cryptd_tfm);



	aead_request_set_tfm(req, aead);



	return crypto_aead_decrypt(req);

}

EXPORT_SYMBOL_GPL(cryptd_morus1280_glue_decrypt);



int cryptd_morus1280_glue_init_tfm(struct crypto_aead *aead)

{

	struct cryptd_aead *cryptd_tfm;

	struct cryptd_aead **ctx = crypto_aead_ctx(aead);

	const char *name = crypto_aead_alg(aead)->base.cra_driver_name;

	char internal_name[CRYPTO_MAX_ALG_NAME];



	if (snprintf(internal_name, CRYPTO_MAX_ALG_NAME, "__%s", name)

			>= CRYPTO_MAX_ALG_NAME)

		return -ENAMETOOLONG;



	cryptd_tfm = cryptd_alloc_aead(internal_name, CRYPTO_ALG_INTERNAL,

				       CRYPTO_ALG_INTERNAL);

	if (IS_ERR(cryptd_tfm))

		return PTR_ERR(cryptd_tfm);



	*ctx = cryptd_tfm;

	crypto_aead_set_reqsize(aead, crypto_aead_reqsize(&cryptd_tfm->base));

	return 0;

}

EXPORT_SYMBOL_GPL(cryptd_morus1280_glue_init_tfm);



void cryptd_morus1280_glue_exit_tfm(struct crypto_aead *aead)

{

	struct cryptd_aead **ctx = crypto_aead_ctx(aead);



	cryptd_free_aead(*ctx);

}

EXPORT_SYMBOL_GPL(cryptd_morus1280_glue_exit_tfm);



MODULE_LICENSE("GPL");

MODULE_AUTHOR("Ondrej Mosnacek <omosnacek@gmail.com>");

MODULE_DESCRIPTION("MORUS-1280 AEAD mode -- glue for optimizations");

crypto/morus640_glue.c

0 → 100644
+298 −0
Original line number Diff line number Diff line 
/*

 * The MORUS-640 Authenticated-Encryption Algorithm

 *   Common glue skeleton

 *

 * Copyright (c) 2016-2018 Ondrej Mosnacek <omosnacek@gmail.com>

 * Copyright (C) 2017-2018 Red Hat, Inc. All rights reserved.

 *

 * This program is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License as published by the Free

 * Software Foundation; either version 2 of the License, or (at your option)

 * any later version.

 */



#include <crypto/cryptd.h>

#include <crypto/internal/aead.h>

#include <crypto/internal/skcipher.h>

#include <crypto/morus640_glue.h>

#include <crypto/scatterwalk.h>

#include <linux/err.h>

#include <linux/init.h>

#include <linux/kernel.h>

#include <linux/module.h>

#include <linux/scatterlist.h>

#include <asm/fpu/api.h>



struct morus640_state {

	struct morus640_block s[MORUS_STATE_BLOCKS];

};



struct morus640_ops {

	int (*skcipher_walk_init)(struct skcipher_walk *walk,

				  struct aead_request *req, bool atomic);



	void (*crypt_blocks)(void *state, const void *src, void *dst,

			     unsigned int length);

	void (*crypt_tail)(void *state, const void *src, void *dst,

			   unsigned int length);

};



static void crypto_morus640_glue_process_ad(

		struct morus640_state *state,

		const struct morus640_glue_ops *ops,

		struct scatterlist *sg_src, unsigned int assoclen)

{

	struct scatter_walk walk;

	struct morus640_block buf;

	unsigned int pos = 0;



	scatterwalk_start(&walk, sg_src);

	while (assoclen != 0) {

		unsigned int size = scatterwalk_clamp(&walk, assoclen);

		unsigned int left = size;

		void *mapped = scatterwalk_map(&walk);

		const u8 *src = (const u8 *)mapped;



		if (pos + size >= MORUS640_BLOCK_SIZE) {

			if (pos > 0) {

				unsigned int fill = MORUS640_BLOCK_SIZE - pos;

				memcpy(buf.bytes + pos, src, fill);

				ops->ad(state, buf.bytes, MORUS640_BLOCK_SIZE);

				pos = 0;

				left -= fill;

				src += fill;

			}



			ops->ad(state, src, left);

			src += left & ~(MORUS640_BLOCK_SIZE - 1);

			left &= MORUS640_BLOCK_SIZE - 1;

		}



		memcpy(buf.bytes + pos, src, left);



		pos += left;

		assoclen -= size;

		scatterwalk_unmap(mapped);

		scatterwalk_advance(&walk, size);

		scatterwalk_done(&walk, 0, assoclen);

	}



	if (pos > 0) {

		memset(buf.bytes + pos, 0, MORUS640_BLOCK_SIZE - pos);

		ops->ad(state, buf.bytes, MORUS640_BLOCK_SIZE);

	}

}



static void crypto_morus640_glue_process_crypt(struct morus640_state *state,

					       struct morus640_ops ops,

					       struct aead_request *req)

{

	struct skcipher_walk walk;

	u8 *cursor_src, *cursor_dst;

	unsigned int chunksize, base;



	ops.skcipher_walk_init(&walk, req, false);



	while (walk.nbytes) {

		cursor_src = walk.src.virt.addr;

		cursor_dst = walk.dst.virt.addr;

		chunksize = walk.nbytes;



		ops.crypt_blocks(state, cursor_src, cursor_dst, chunksize);



		base = chunksize & ~(MORUS640_BLOCK_SIZE - 1);

		cursor_src += base;

		cursor_dst += base;

		chunksize &= MORUS640_BLOCK_SIZE - 1;



		if (chunksize > 0)

			ops.crypt_tail(state, cursor_src, cursor_dst,

				       chunksize);



		skcipher_walk_done(&walk, 0);

	}

}



int crypto_morus640_glue_setkey(struct crypto_aead *aead, const u8 *key,

				unsigned int keylen)

{

	struct morus640_ctx *ctx = crypto_aead_ctx(aead);



	if (keylen != MORUS640_BLOCK_SIZE) {

		crypto_aead_set_flags(aead, CRYPTO_TFM_RES_BAD_KEY_LEN);

		return -EINVAL;

	}



	memcpy(ctx->key.bytes, key, MORUS640_BLOCK_SIZE);

	return 0;

}

EXPORT_SYMBOL_GPL(crypto_morus640_glue_setkey);



int crypto_morus640_glue_setauthsize(struct crypto_aead *tfm,

				     unsigned int authsize)

{

	return (authsize <= MORUS_MAX_AUTH_SIZE) ? 0 : -EINVAL;

}

EXPORT_SYMBOL_GPL(crypto_morus640_glue_setauthsize);



static void crypto_morus640_glue_crypt(struct aead_request *req,

				       struct morus640_ops ops,

				       unsigned int cryptlen,

				       struct morus640_block *tag_xor)

{

	struct crypto_aead *tfm = crypto_aead_reqtfm(req);

	struct morus640_ctx *ctx = crypto_aead_ctx(tfm);

	struct morus640_state state;



	kernel_fpu_begin();



	ctx->ops->init(&state, &ctx->key, req->iv);

	crypto_morus640_glue_process_ad(&state, ctx->ops, req->src, req->assoclen);

	crypto_morus640_glue_process_crypt(&state, ops, req);

	ctx->ops->final(&state, tag_xor, req->assoclen, cryptlen);



	kernel_fpu_end();

}



int crypto_morus640_glue_encrypt(struct aead_request *req)

{

	struct crypto_aead *tfm = crypto_aead_reqtfm(req);

	struct morus640_ctx *ctx = crypto_aead_ctx(tfm);

	struct morus640_ops OPS = {

		.skcipher_walk_init = skcipher_walk_aead_encrypt,

		.crypt_blocks = ctx->ops->enc,

		.crypt_tail = ctx->ops->enc_tail,

	};



	struct morus640_block tag = {};

	unsigned int authsize = crypto_aead_authsize(tfm);

	unsigned int cryptlen = req->cryptlen;



	crypto_morus640_glue_crypt(req, OPS, cryptlen, &tag);



	scatterwalk_map_and_copy(tag.bytes, req->dst,

				 req->assoclen + cryptlen, authsize, 1);

	return 0;

}

EXPORT_SYMBOL_GPL(crypto_morus640_glue_encrypt);



int crypto_morus640_glue_decrypt(struct aead_request *req)

{

	static const u8 zeros[MORUS640_BLOCK_SIZE] = {};



	struct crypto_aead *tfm = crypto_aead_reqtfm(req);

	struct morus640_ctx *ctx = crypto_aead_ctx(tfm);

	struct morus640_ops OPS = {

		.skcipher_walk_init = skcipher_walk_aead_decrypt,

		.crypt_blocks = ctx->ops->dec,

		.crypt_tail = ctx->ops->dec_tail,

	};



	struct morus640_block tag;

	unsigned int authsize = crypto_aead_authsize(tfm);

	unsigned int cryptlen = req->cryptlen - authsize;



	scatterwalk_map_and_copy(tag.bytes, req->src,

				 req->assoclen + cryptlen, authsize, 0);



	crypto_morus640_glue_crypt(req, OPS, cryptlen, &tag);



	return crypto_memneq(tag.bytes, zeros, authsize) ? -EBADMSG : 0;

}

EXPORT_SYMBOL_GPL(crypto_morus640_glue_decrypt);



void crypto_morus640_glue_init_ops(struct crypto_aead *aead,

				   const struct morus640_glue_ops *ops)

{

	struct morus640_ctx *ctx = crypto_aead_ctx(aead);

	ctx->ops = ops;

}

EXPORT_SYMBOL_GPL(crypto_morus640_glue_init_ops);



int cryptd_morus640_glue_setkey(struct crypto_aead *aead, const u8 *key,

				unsigned int keylen)

{

	struct cryptd_aead **ctx = crypto_aead_ctx(aead);

	struct cryptd_aead *cryptd_tfm = *ctx;



	return crypto_aead_setkey(&cryptd_tfm->base, key, keylen);

}

EXPORT_SYMBOL_GPL(cryptd_morus640_glue_setkey);



int cryptd_morus640_glue_setauthsize(struct crypto_aead *aead,

				     unsigned int authsize)

{

	struct cryptd_aead **ctx = crypto_aead_ctx(aead);

	struct cryptd_aead *cryptd_tfm = *ctx;



	return crypto_aead_setauthsize(&cryptd_tfm->base, authsize);

}

EXPORT_SYMBOL_GPL(cryptd_morus640_glue_setauthsize);



int cryptd_morus640_glue_encrypt(struct aead_request *req)

{

	struct crypto_aead *aead = crypto_aead_reqtfm(req);

	struct cryptd_aead **ctx = crypto_aead_ctx(aead);

	struct cryptd_aead *cryptd_tfm = *ctx;



	aead = &cryptd_tfm->base;

	if (irq_fpu_usable() && (!in_atomic() ||

				 !cryptd_aead_queued(cryptd_tfm)))

		aead = cryptd_aead_child(cryptd_tfm);



	aead_request_set_tfm(req, aead);



	return crypto_aead_encrypt(req);

}

EXPORT_SYMBOL_GPL(cryptd_morus640_glue_encrypt);



int cryptd_morus640_glue_decrypt(struct aead_request *req)

{

	struct crypto_aead *aead = crypto_aead_reqtfm(req);

	struct cryptd_aead **ctx = crypto_aead_ctx(aead);

	struct cryptd_aead *cryptd_tfm = *ctx;



	aead = &cryptd_tfm->base;

	if (irq_fpu_usable() && (!in_atomic() ||

				 !cryptd_aead_queued(cryptd_tfm)))

		aead = cryptd_aead_child(cryptd_tfm);



	aead_request_set_tfm(req, aead);



	return crypto_aead_decrypt(req);

}

EXPORT_SYMBOL_GPL(cryptd_morus640_glue_decrypt);



int cryptd_morus640_glue_init_tfm(struct crypto_aead *aead)

{

	struct cryptd_aead *cryptd_tfm;

	struct cryptd_aead **ctx = crypto_aead_ctx(aead);

	const char *name = crypto_aead_alg(aead)->base.cra_driver_name;

	char internal_name[CRYPTO_MAX_ALG_NAME];



	if (snprintf(internal_name, CRYPTO_MAX_ALG_NAME, "__%s", name)

			>= CRYPTO_MAX_ALG_NAME)

		return -ENAMETOOLONG;



	cryptd_tfm = cryptd_alloc_aead(internal_name, CRYPTO_ALG_INTERNAL,

				       CRYPTO_ALG_INTERNAL);

	if (IS_ERR(cryptd_tfm))

		return PTR_ERR(cryptd_tfm);



	*ctx = cryptd_tfm;

	crypto_aead_set_reqsize(aead, crypto_aead_reqsize(&cryptd_tfm->base));

	return 0;

}

EXPORT_SYMBOL_GPL(cryptd_morus640_glue_init_tfm);



void cryptd_morus640_glue_exit_tfm(struct crypto_aead *aead)

{

	struct cryptd_aead **ctx = crypto_aead_ctx(aead);



	cryptd_free_aead(*ctx);

}

EXPORT_SYMBOL_GPL(cryptd_morus640_glue_exit_tfm);



MODULE_LICENSE("GPL");

MODULE_AUTHOR("Ondrej Mosnacek <omosnacek@gmail.com>");

MODULE_DESCRIPTION("MORUS-640 AEAD mode -- glue for optimizations");

include/crypto/morus1280_glue.h

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/* SPDX-License-Identifier: GPL-2.0 */

/*

 * The MORUS-1280 Authenticated-Encryption Algorithm

 *   Common glue skeleton -- header file

 *

 * Copyright (c) 2016-2018 Ondrej Mosnacek <omosnacek@gmail.com>

 * Copyright (C) 2017-2018 Red Hat, Inc. All rights reserved.

 *

 * This program is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License as published by the Free

 * Software Foundation; either version 2 of the License, or (at your option)

 * any later version.

 */



#ifndef _CRYPTO_MORUS1280_GLUE_H

#define _CRYPTO_MORUS1280_GLUE_H



#include <linux/module.h>

#include <linux/types.h>

#include <crypto/algapi.h>

#include <crypto/aead.h>

#include <crypto/morus_common.h>



#define MORUS1280_WORD_SIZE 8

#define MORUS1280_BLOCK_SIZE (MORUS_BLOCK_WORDS * MORUS1280_WORD_SIZE)



struct morus1280_block {

	u8 bytes[MORUS1280_BLOCK_SIZE];

};



struct morus1280_glue_ops {

	void (*init)(void *state, const void *key, const void *iv);

	void (*ad)(void *state, const void *data, unsigned int length);

	void (*enc)(void *state, const void *src, void *dst, unsigned int length);

	void (*dec)(void *state, const void *src, void *dst, unsigned int length);

	void (*enc_tail)(void *state, const void *src, void *dst, unsigned int length);

	void (*dec_tail)(void *state, const void *src, void *dst, unsigned int length);

	void (*final)(void *state, void *tag_xor, u64 assoclen, u64 cryptlen);

};



struct morus1280_ctx {

	const struct morus1280_glue_ops *ops;

	struct morus1280_block key;

};



void crypto_morus1280_glue_init_ops(struct crypto_aead *aead,

				    const struct morus1280_glue_ops *ops);

int crypto_morus1280_glue_setkey(struct crypto_aead *aead, const u8 *key,

				 unsigned int keylen);

int crypto_morus1280_glue_setauthsize(struct crypto_aead *tfm,

				      unsigned int authsize);

int crypto_morus1280_glue_encrypt(struct aead_request *req);

int crypto_morus1280_glue_decrypt(struct aead_request *req);



int cryptd_morus1280_glue_setkey(struct crypto_aead *aead, const u8 *key,

				 unsigned int keylen);

int cryptd_morus1280_glue_setauthsize(struct crypto_aead *aead,

				      unsigned int authsize);

int cryptd_morus1280_glue_encrypt(struct aead_request *req);

int cryptd_morus1280_glue_decrypt(struct aead_request *req);

int cryptd_morus1280_glue_init_tfm(struct crypto_aead *aead);

void cryptd_morus1280_glue_exit_tfm(struct crypto_aead *aead);



#define MORUS1280_DECLARE_ALGS(id, driver_name, priority) \

	static const struct morus1280_glue_ops crypto_morus1280_##id##_ops = {\

		.init = crypto_morus1280_##id##_init, \

		.ad = crypto_morus1280_##id##_ad, \

		.enc = crypto_morus1280_##id##_enc, \

		.enc_tail = crypto_morus1280_##id##_enc_tail, \

		.dec = crypto_morus1280_##id##_dec, \

		.dec_tail = crypto_morus1280_##id##_dec_tail, \

		.final = crypto_morus1280_##id##_final, \

	}; \

	\

	static int crypto_morus1280_##id##_init_tfm(struct crypto_aead *tfm) \

	{ \

		crypto_morus1280_glue_init_ops(tfm, &crypto_morus1280_##id##_ops); \

		return 0; \

	} \

	\

	static void crypto_morus1280_##id##_exit_tfm(struct crypto_aead *tfm) \

	{ \

	} \

	\

	struct aead_alg crypto_morus1280_##id##_algs[] = {\

		{ \

			.setkey = crypto_morus1280_glue_setkey, \

			.setauthsize = crypto_morus1280_glue_setauthsize, \

			.encrypt = crypto_morus1280_glue_encrypt, \

			.decrypt = crypto_morus1280_glue_decrypt, \

			.init = crypto_morus1280_##id##_init_tfm, \

			.exit = crypto_morus1280_##id##_exit_tfm, \

			\

			.ivsize = MORUS_NONCE_SIZE, \

			.maxauthsize = MORUS_MAX_AUTH_SIZE, \

			.chunksize = MORUS1280_BLOCK_SIZE, \

			\

			.base = { \

				.cra_flags = CRYPTO_ALG_INTERNAL, \

				.cra_blocksize = 1, \

				.cra_ctxsize = sizeof(struct morus1280_ctx), \

				.cra_alignmask = 0, \

				\

				.cra_name = "__morus1280", \

				.cra_driver_name = "__"driver_name, \

				\

				.cra_module = THIS_MODULE, \

			} \

		}, { \

			.setkey = cryptd_morus1280_glue_setkey, \

			.setauthsize = cryptd_morus1280_glue_setauthsize, \

			.encrypt = cryptd_morus1280_glue_encrypt, \

			.decrypt = cryptd_morus1280_glue_decrypt, \

			.init = cryptd_morus1280_glue_init_tfm, \

			.exit = cryptd_morus1280_glue_exit_tfm, \

			\

			.ivsize = MORUS_NONCE_SIZE, \

			.maxauthsize = MORUS_MAX_AUTH_SIZE, \

			.chunksize = MORUS1280_BLOCK_SIZE, \

			\

			.base = { \

				.cra_flags = CRYPTO_ALG_ASYNC, \

				.cra_blocksize = 1, \

				.cra_ctxsize = sizeof(struct crypto_aead *), \

				.cra_alignmask = 0, \

				\

				.cra_priority = priority, \

				\

				.cra_name = "morus1280", \

				.cra_driver_name = driver_name, \

				\

				.cra_module = THIS_MODULE, \

			} \

		} \

	}



#endif /* _CRYPTO_MORUS1280_GLUE_H */