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crypto: serpent-sse2 - split generic glue code to new helper module

Browse source 
Now that serpent-sse2 glue code has been made generic, it can be split to
separate module.

Signed-off-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Jussi Kivilinna 2012-06-18 14:07:19 +03:00 • committed by Herbert Xu
parent e81792fbc2
commit 596d875052
5 changed files with 431 additions and 351 deletions
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1
arch/x86/crypto/Makefile
View file

@ -3,6 +3,7 @@
#
obj-$(CONFIG_CRYPTO_ABLK_HELPER_X86) += ablk_helper.o
obj-$(CONFIG_CRYPTO_GLUE_HELPER_X86) += glue_helper.o
obj-$(CONFIG_CRYPTO_AES_586) += aes-i586.o
obj-$(CONFIG_CRYPTO_TWOFISH_586) += twofish-i586.o

307
arch/x86/crypto/glue_helper.c Normal file
View file

@ -0,0 +1,307 @@
/*
* Shared glue code for 128bit block ciphers
*
* Copyright (c) 2012 Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
*
* CBC & ECB parts based on code (crypto/cbc.c,ecb.c) by:
* Copyright (c) 2006 Herbert Xu <herbert@gondor.apana.org.au>
* CTR part based on code (crypto/ctr.c) by:
* (C) Copyright IBM Corp. 2007 - Joy Latten <latten@us.ibm.com>
*
* 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.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
* USA
*
*/
#include <linux/module.h>
#include <crypto/b128ops.h>
#include <crypto/lrw.h>
#include <crypto/xts.h>
#include <asm/crypto/glue_helper.h>
#include <crypto/scatterwalk.h>
static int __glue_ecb_crypt_128bit(const struct common_glue_ctx *gctx,
struct blkcipher_desc *desc,
struct blkcipher_walk *walk)
{
void *ctx = crypto_blkcipher_ctx(desc->tfm);
const unsigned int bsize = 128 / 8;
unsigned int nbytes, i, func_bytes;
bool fpu_enabled = false;
int err;
err = blkcipher_walk_virt(desc, walk);
while ((nbytes = walk->nbytes)) {
u8 *wsrc = walk->src.virt.addr;
u8 *wdst = walk->dst.virt.addr;
fpu_enabled = glue_fpu_begin(bsize, gctx->fpu_blocks_limit,
desc, fpu_enabled, nbytes);
for (i = 0; i < gctx->num_funcs; i++) {
func_bytes = bsize * gctx->funcs[i].num_blocks;
/* Process multi-block batch */
if (nbytes >= func_bytes) {
do {
gctx->funcs[i].fn_u.ecb(ctx, wdst,
wsrc);
wsrc += func_bytes;
wdst += func_bytes;
nbytes -= func_bytes;
} while (nbytes >= func_bytes);
if (nbytes < bsize)
goto done;
}
}
done:
err = blkcipher_walk_done(desc, walk, nbytes);
}
glue_fpu_end(fpu_enabled);
return err;
}
int glue_ecb_crypt_128bit(const struct common_glue_ctx *gctx,
struct blkcipher_desc *desc, struct scatterlist *dst,
struct scatterlist *src, unsigned int nbytes)
{
struct blkcipher_walk walk;
blkcipher_walk_init(&walk, dst, src, nbytes);
return __glue_ecb_crypt_128bit(gctx, desc, &walk);
}
EXPORT_SYMBOL_GPL(glue_ecb_crypt_128bit);
static unsigned int __glue_cbc_encrypt_128bit(const common_glue_func_t fn,
struct blkcipher_desc *desc,
struct blkcipher_walk *walk)
{
void *ctx = crypto_blkcipher_ctx(desc->tfm);
const unsigned int bsize = 128 / 8;
unsigned int nbytes = walk->nbytes;
u128 *src = (u128 *)walk->src.virt.addr;
u128 *dst = (u128 *)walk->dst.virt.addr;
u128 *iv = (u128 *)walk->iv;
do {
u128_xor(dst, src, iv);
fn(ctx, (u8 *)dst, (u8 *)dst);
iv = dst;
src += 1;
dst += 1;
nbytes -= bsize;
} while (nbytes >= bsize);
u128_xor((u128 *)walk->iv, (u128 *)walk->iv, iv);
return nbytes;
}
int glue_cbc_encrypt_128bit(const common_glue_func_t fn,
struct blkcipher_desc *desc,
struct scatterlist *dst,
struct scatterlist *src, unsigned int nbytes)
{
struct blkcipher_walk walk;
int err;
blkcipher_walk_init(&walk, dst, src, nbytes);
err = blkcipher_walk_virt(desc, &walk);
while ((nbytes = walk.nbytes)) {
nbytes = __glue_cbc_encrypt_128bit(fn, desc, &walk);
err = blkcipher_walk_done(desc, &walk, nbytes);
}
return err;
}
EXPORT_SYMBOL_GPL(glue_cbc_encrypt_128bit);
static unsigned int
__glue_cbc_decrypt_128bit(const struct common_glue_ctx *gctx,
struct blkcipher_desc *desc,
struct blkcipher_walk *walk)
{
void *ctx = crypto_blkcipher_ctx(desc->tfm);
const unsigned int bsize = 128 / 8;
unsigned int nbytes = walk->nbytes;
u128 *src = (u128 *)walk->src.virt.addr;
u128 *dst = (u128 *)walk->dst.virt.addr;
u128 last_iv;
unsigned int num_blocks, func_bytes;
unsigned int i;
/* Start of the last block. */
src += nbytes / bsize - 1;
dst += nbytes / bsize - 1;
last_iv = *src;
for (i = 0; i < gctx->num_funcs; i++) {
num_blocks = gctx->funcs[i].num_blocks;
func_bytes = bsize * num_blocks;
/* Process multi-block batch */
if (nbytes >= func_bytes) {
do {
nbytes -= func_bytes - bsize;
src -= num_blocks - 1;
dst -= num_blocks - 1;
gctx->funcs[i].fn_u.cbc(ctx, dst, src);
nbytes -= bsize;
if (nbytes < bsize)
goto done;
u128_xor(dst, dst, src - 1);
src -= 1;
dst -= 1;
} while (nbytes >= func_bytes);
if (nbytes < bsize)
goto done;
}
}
done:
u128_xor(dst, dst, (u128 *)walk->iv);
*(u128 *)walk->iv = last_iv;
return nbytes;
}
int glue_cbc_decrypt_128bit(const struct common_glue_ctx *gctx,
struct blkcipher_desc *desc,
struct scatterlist *dst,
struct scatterlist *src, unsigned int nbytes)
{
const unsigned int bsize = 128 / 8;
bool fpu_enabled = false;
struct blkcipher_walk walk;
int err;
blkcipher_walk_init(&walk, dst, src, nbytes);
err = blkcipher_walk_virt(desc, &walk);
while ((nbytes = walk.nbytes)) {
fpu_enabled = glue_fpu_begin(bsize, gctx->fpu_blocks_limit,
desc, fpu_enabled, nbytes);
nbytes = __glue_cbc_decrypt_128bit(gctx, desc, &walk);
err = blkcipher_walk_done(desc, &walk, nbytes);
}
glue_fpu_end(fpu_enabled);
return err;
}
EXPORT_SYMBOL_GPL(glue_cbc_decrypt_128bit);
static void glue_ctr_crypt_final_128bit(const common_glue_ctr_func_t fn_ctr,
struct blkcipher_desc *desc,
struct blkcipher_walk *walk)
{
void *ctx = crypto_blkcipher_ctx(desc->tfm);
u8 *src = (u8 *)walk->src.virt.addr;
u8 *dst = (u8 *)walk->dst.virt.addr;
unsigned int nbytes = walk->nbytes;
u128 ctrblk;
u128 tmp;
be128_to_u128(&ctrblk, (be128 *)walk->iv);
memcpy(&tmp, src, nbytes);
fn_ctr(ctx, &tmp, &tmp, &ctrblk);
memcpy(dst, &tmp, nbytes);
u128_to_be128((be128 *)walk->iv, &ctrblk);
}
EXPORT_SYMBOL_GPL(glue_ctr_crypt_final_128bit);
static unsigned int __glue_ctr_crypt_128bit(const struct common_glue_ctx *gctx,
struct blkcipher_desc *desc,
struct blkcipher_walk *walk)
{
const unsigned int bsize = 128 / 8;
void *ctx = crypto_blkcipher_ctx(desc->tfm);
unsigned int nbytes = walk->nbytes;
u128 *src = (u128 *)walk->src.virt.addr;
u128 *dst = (u128 *)walk->dst.virt.addr;
u128 ctrblk;
unsigned int num_blocks, func_bytes;
unsigned int i;
be128_to_u128(&ctrblk, (be128 *)walk->iv);
/* Process multi-block batch */
for (i = 0; i < gctx->num_funcs; i++) {
num_blocks = gctx->funcs[i].num_blocks;
func_bytes = bsize * num_blocks;
if (nbytes >= func_bytes) {
do {
gctx->funcs[i].fn_u.ctr(ctx, dst, src, &ctrblk);
src += num_blocks;
dst += num_blocks;
nbytes -= func_bytes;
} while (nbytes >= func_bytes);
if (nbytes < bsize)
goto done;
}
}
done:
u128_to_be128((be128 *)walk->iv, &ctrblk);
return nbytes;
}
int glue_ctr_crypt_128bit(const struct common_glue_ctx *gctx,
struct blkcipher_desc *desc, struct scatterlist *dst,
struct scatterlist *src, unsigned int nbytes)
{
const unsigned int bsize = 128 / 8;
bool fpu_enabled = false;
struct blkcipher_walk walk;
int err;
blkcipher_walk_init(&walk, dst, src, nbytes);
err = blkcipher_walk_virt_block(desc, &walk, bsize);
while ((nbytes = walk.nbytes) >= bsize) {
fpu_enabled = glue_fpu_begin(bsize, gctx->fpu_blocks_limit,
desc, fpu_enabled, nbytes);
nbytes = __glue_ctr_crypt_128bit(gctx, desc, &walk);
err = blkcipher_walk_done(desc, &walk, nbytes);
}
glue_fpu_end(fpu_enabled);
if (walk.nbytes) {
glue_ctr_crypt_final_128bit(
gctx->funcs[gctx->num_funcs - 1].fn_u.ctr, desc, &walk);
err = blkcipher_walk_done(desc, &walk, 0);
}
return err;
}
EXPORT_SYMBOL_GPL(glue_ctr_crypt_128bit);
MODULE_LICENSE("GPL");

352
arch/x86/crypto/serpent_sse2_glue.c
View file

@ -41,359 +41,9 @@
#include <crypto/ctr.h>
#include <crypto/lrw.h>
#include <crypto/xts.h>
#include <asm/i387.h>
#include <asm/serpent-sse2.h>
#include <asm/crypto/ablk_helper.h>
#include <crypto/scatterwalk.h>
#include <linux/workqueue.h>
#include <linux/spinlock.h>
typedef void (*common_glue_func_t)(void *ctx, u8 *dst, const u8 *src);
typedef void (*common_glue_cbc_func_t)(void *ctx, u128 *dst, const u128 *src);
typedef void (*common_glue_ctr_func_t)(void *ctx, u128 *dst, const u128 *src,
u128 *iv);
#define GLUE_FUNC_CAST(fn) ((common_glue_func_t)(fn))
#define GLUE_CBC_FUNC_CAST(fn) ((common_glue_cbc_func_t)(fn))
#define GLUE_CTR_FUNC_CAST(fn) ((common_glue_ctr_func_t)(fn))
struct common_glue_func_entry {
unsigned int num_blocks; /* number of blocks that @fn will process */
union {
common_glue_func_t ecb;
common_glue_cbc_func_t cbc;
common_glue_ctr_func_t ctr;
} fn_u;
};
struct common_glue_ctx {
unsigned int num_funcs;
int fpu_blocks_limit; /* -1 means fpu not needed at all */
/*
* First funcs entry must have largest num_blocks and last funcs entry
* must have num_blocks == 1!
*/
struct common_glue_func_entry funcs[];
};
static inline bool glue_fpu_begin(unsigned int bsize, int fpu_blocks_limit,
struct blkcipher_desc *desc,
bool fpu_enabled, unsigned int nbytes)
{
if (likely(fpu_blocks_limit < 0))
return false;
if (fpu_enabled)
return true;
/*
* Vector-registers are only used when chunk to be processed is large
* enough, so do not enable FPU until it is necessary.
*/
if (nbytes < bsize * (unsigned int)fpu_blocks_limit)
return false;
if (desc) {
/* prevent sleeping if FPU is in use */
desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP;
}
kernel_fpu_begin();
return true;
}
static inline void glue_fpu_end(bool fpu_enabled)
{
if (fpu_enabled)
kernel_fpu_end();
}
static int __glue_ecb_crypt_128bit(const struct common_glue_ctx *gctx,
struct blkcipher_desc *desc,
struct blkcipher_walk *walk)
{
void *ctx = crypto_blkcipher_ctx(desc->tfm);
const unsigned int bsize = 128 / 8;
unsigned int nbytes, i, func_bytes;
bool fpu_enabled = false;
int err;
err = blkcipher_walk_virt(desc, walk);
while ((nbytes = walk->nbytes)) {
u8 *wsrc = walk->src.virt.addr;
u8 *wdst = walk->dst.virt.addr;
fpu_enabled = glue_fpu_begin(bsize, gctx->fpu_blocks_limit,
desc, fpu_enabled, nbytes);
for (i = 0; i < gctx->num_funcs; i++) {
func_bytes = bsize * gctx->funcs[i].num_blocks;
/* Process multi-block batch */
if (nbytes >= func_bytes) {
do {
gctx->funcs[i].fn_u.ecb(ctx, wdst,
wsrc);
wsrc += func_bytes;
wdst += func_bytes;
nbytes -= func_bytes;
} while (nbytes >= func_bytes);
if (nbytes < bsize)
goto done;
}
}
done:
err = blkcipher_walk_done(desc, walk, nbytes);
}
glue_fpu_end(fpu_enabled);
return err;
}
int glue_ecb_crypt_128bit(const struct common_glue_ctx *gctx,
struct blkcipher_desc *desc, struct scatterlist *dst,
struct scatterlist *src, unsigned int nbytes)
{
struct blkcipher_walk walk;
blkcipher_walk_init(&walk, dst, src, nbytes);
return __glue_ecb_crypt_128bit(gctx, desc, &walk);
}
static unsigned int __glue_cbc_encrypt_128bit(const common_glue_func_t fn,
struct blkcipher_desc *desc,
struct blkcipher_walk *walk)
{
void *ctx = crypto_blkcipher_ctx(desc->tfm);
const unsigned int bsize = 128 / 8;
unsigned int nbytes = walk->nbytes;
u128 *src = (u128 *)walk->src.virt.addr;
u128 *dst = (u128 *)walk->dst.virt.addr;
u128 *iv = (u128 *)walk->iv;
do {
u128_xor(dst, src, iv);
fn(ctx, (u8 *)dst, (u8 *)dst);
iv = dst;
src += 1;
dst += 1;
nbytes -= bsize;
} while (nbytes >= bsize);
u128_xor((u128 *)walk->iv, (u128 *)walk->iv, iv);
return nbytes;
}
int glue_cbc_encrypt_128bit(const common_glue_func_t fn,
struct blkcipher_desc *desc,
struct scatterlist *dst,
struct scatterlist *src, unsigned int nbytes)
{
struct blkcipher_walk walk;
int err;
blkcipher_walk_init(&walk, dst, src, nbytes);
err = blkcipher_walk_virt(desc, &walk);
while ((nbytes = walk.nbytes)) {
nbytes = __glue_cbc_encrypt_128bit(fn, desc, &walk);
err = blkcipher_walk_done(desc, &walk, nbytes);
}
return err;
}
static unsigned int
__glue_cbc_decrypt_128bit(const struct common_glue_ctx *gctx,
struct blkcipher_desc *desc,
struct blkcipher_walk *walk)
{
void *ctx = crypto_blkcipher_ctx(desc->tfm);
const unsigned int bsize = 128 / 8;
unsigned int nbytes = walk->nbytes;
u128 *src = (u128 *)walk->src.virt.addr;
u128 *dst = (u128 *)walk->dst.virt.addr;
u128 last_iv;
unsigned int num_blocks, func_bytes;
unsigned int i;
/* Start of the last block. */
src += nbytes / bsize - 1;
dst += nbytes / bsize - 1;
last_iv = *src;
for (i = 0; i < gctx->num_funcs; i++) {
num_blocks = gctx->funcs[i].num_blocks;
func_bytes = bsize * num_blocks;
/* Process multi-block batch */
if (nbytes >= func_bytes) {
do {
nbytes -= func_bytes - bsize;
src -= num_blocks - 1;
dst -= num_blocks - 1;
gctx->funcs[i].fn_u.cbc(ctx, dst, src);
nbytes -= bsize;
if (nbytes < bsize)
goto done;
u128_xor(dst, dst, src - 1);
src -= 1;
dst -= 1;
} while (nbytes >= func_bytes);
if (nbytes < bsize)
goto done;
}
}
done:
u128_xor(dst, dst, (u128 *)walk->iv);
*(u128 *)walk->iv = last_iv;
return nbytes;
}
int glue_cbc_decrypt_128bit(const struct common_glue_ctx *gctx,
struct blkcipher_desc *desc,
struct scatterlist *dst,
struct scatterlist *src, unsigned int nbytes)
{
const unsigned int bsize = 128 / 8;
bool fpu_enabled = false;
struct blkcipher_walk walk;
int err;
blkcipher_walk_init(&walk, dst, src, nbytes);
err = blkcipher_walk_virt(desc, &walk);
while ((nbytes = walk.nbytes)) {
fpu_enabled = glue_fpu_begin(bsize, gctx->fpu_blocks_limit,
desc, fpu_enabled, nbytes);
nbytes = __glue_cbc_decrypt_128bit(gctx, desc, &walk);
err = blkcipher_walk_done(desc, &walk, nbytes);
}
glue_fpu_end(fpu_enabled);
return err;
}
static inline void u128_to_be128(be128 *dst, const u128 *src)
{
dst->a = cpu_to_be64(src->a);
dst->b = cpu_to_be64(src->b);
}
static inline void be128_to_u128(u128 *dst, const be128 *src)
{
dst->a = be64_to_cpu(src->a);
dst->b = be64_to_cpu(src->b);
}
static inline void u128_inc(u128 *i)
{
i->b++;
if (!i->b)
i->a++;
}
static void glue_ctr_crypt_final_128bit(const common_glue_ctr_func_t fn_ctr,
struct blkcipher_desc *desc,
struct blkcipher_walk *walk)
{
void *ctx = crypto_blkcipher_ctx(desc->tfm);
u8 *src = (u8 *)walk->src.virt.addr;
u8 *dst = (u8 *)walk->dst.virt.addr;
unsigned int nbytes = walk->nbytes;
u128 ctrblk;
u128 tmp;
be128_to_u128(&ctrblk, (be128 *)walk->iv);
memcpy(&tmp, src, nbytes);
fn_ctr(ctx, &tmp, &tmp, &ctrblk);
memcpy(dst, &tmp, nbytes);
u128_to_be128((be128 *)walk->iv, &ctrblk);
}
static unsigned int __glue_ctr_crypt_128bit(const struct common_glue_ctx *gctx,
struct blkcipher_desc *desc,
struct blkcipher_walk *walk)
{
const unsigned int bsize = 128 / 8;
void *ctx = crypto_blkcipher_ctx(desc->tfm);
unsigned int nbytes = walk->nbytes;
u128 *src = (u128 *)walk->src.virt.addr;
u128 *dst = (u128 *)walk->dst.virt.addr;
u128 ctrblk;
unsigned int num_blocks, func_bytes;
unsigned int i;
be128_to_u128(&ctrblk, (be128 *)walk->iv);
/* Process multi-block batch */
for (i = 0; i < gctx->num_funcs; i++) {
num_blocks = gctx->funcs[i].num_blocks;
func_bytes = bsize * num_blocks;
if (nbytes >= func_bytes) {
do {
gctx->funcs[i].fn_u.ctr(ctx, dst, src, &ctrblk);
src += num_blocks;
dst += num_blocks;
nbytes -= func_bytes;
} while (nbytes >= func_bytes);
if (nbytes < bsize)
goto done;
}
}
done:
u128_to_be128((be128 *)walk->iv, &ctrblk);
return nbytes;
}
int glue_ctr_crypt_128bit(const struct common_glue_ctx *gctx,
struct blkcipher_desc *desc, struct scatterlist *dst,
struct scatterlist *src, unsigned int nbytes)
{
const unsigned int bsize = 128 / 8;
bool fpu_enabled = false;
struct blkcipher_walk walk;
int err;
blkcipher_walk_init(&walk, dst, src, nbytes);
err = blkcipher_walk_virt_block(desc, &walk, bsize);
while ((nbytes = walk.nbytes) >= bsize) {
fpu_enabled = glue_fpu_begin(bsize, gctx->fpu_blocks_limit,
desc, fpu_enabled, nbytes);
nbytes = __glue_ctr_crypt_128bit(gctx, desc, &walk);
err = blkcipher_walk_done(desc, &walk, nbytes);
}
glue_fpu_end(fpu_enabled);
if (walk.nbytes) {
glue_ctr_crypt_final_128bit(
gctx->funcs[gctx->num_funcs - 1].fn_u.ctr, desc, &walk);
err = blkcipher_walk_done(desc, &walk, 0);
}
return err;
}
#include <asm/crypto/glue_helper.h>
static void serpent_decrypt_cbc_xway(void *ctx, u128 *dst, const u128 *src)
{

115
arch/x86/include/asm/crypto/glue_helper.h Normal file
View file

@ -0,0 +1,115 @@
/*
* Shared glue code for 128bit block ciphers
*/
#ifndef _CRYPTO_GLUE_HELPER_H
#define _CRYPTO_GLUE_HELPER_H
#include <linux/kernel.h>
#include <linux/crypto.h>
#include <asm/i387.h>
#include <crypto/b128ops.h>
typedef void (*common_glue_func_t)(void *ctx, u8 *dst, const u8 *src);
typedef void (*common_glue_cbc_func_t)(void *ctx, u128 *dst, const u128 *src);
typedef void (*common_glue_ctr_func_t)(void *ctx, u128 *dst, const u128 *src,
u128 *iv);
#define GLUE_FUNC_CAST(fn) ((common_glue_func_t)(fn))
#define GLUE_CBC_FUNC_CAST(fn) ((common_glue_cbc_func_t)(fn))
#define GLUE_CTR_FUNC_CAST(fn) ((common_glue_ctr_func_t)(fn))
struct common_glue_func_entry {
unsigned int num_blocks; /* number of blocks that @fn will process */
union {
common_glue_func_t ecb;
common_glue_cbc_func_t cbc;
common_glue_ctr_func_t ctr;
} fn_u;
};
struct common_glue_ctx {
unsigned int num_funcs;
int fpu_blocks_limit; /* -1 means fpu not needed at all */
/*
* First funcs entry must have largest num_blocks and last funcs entry
* must have num_blocks == 1!
*/
struct common_glue_func_entry funcs[];
};
static inline bool glue_fpu_begin(unsigned int bsize, int fpu_blocks_limit,
struct blkcipher_desc *desc,
bool fpu_enabled, unsigned int nbytes)
{
if (likely(fpu_blocks_limit < 0))
return false;
if (fpu_enabled)
return true;
/*
* Vector-registers are only used when chunk to be processed is large
* enough, so do not enable FPU until it is necessary.
*/
if (nbytes < bsize * (unsigned int)fpu_blocks_limit)
return false;
if (desc) {
/* prevent sleeping if FPU is in use */
desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP;
}
kernel_fpu_begin();
return true;
}
static inline void glue_fpu_end(bool fpu_enabled)
{
if (fpu_enabled)
kernel_fpu_end();
}
static inline void u128_to_be128(be128 *dst, const u128 *src)
{
dst->a = cpu_to_be64(src->a);
dst->b = cpu_to_be64(src->b);
}
static inline void be128_to_u128(u128 *dst, const be128 *src)
{
dst->a = be64_to_cpu(src->a);
dst->b = be64_to_cpu(src->b);
}
static inline void u128_inc(u128 *i)
{
i->b++;
if (!i->b)
i->a++;
}
extern int glue_ecb_crypt_128bit(const struct common_glue_ctx *gctx,
struct blkcipher_desc *desc,
struct scatterlist *dst,
struct scatterlist *src, unsigned int nbytes);
extern int glue_cbc_encrypt_128bit(const common_glue_func_t fn,
struct blkcipher_desc *desc,
struct scatterlist *dst,
struct scatterlist *src,
unsigned int nbytes);
extern int glue_cbc_decrypt_128bit(const struct common_glue_ctx *gctx,
struct blkcipher_desc *desc,
struct scatterlist *dst,
struct scatterlist *src,
unsigned int nbytes);
extern int glue_ctr_crypt_128bit(const struct common_glue_ctx *gctx,
struct blkcipher_desc *desc,
struct scatterlist *dst,
struct scatterlist *src, unsigned int nbytes);
#endif /* _CRYPTO_GLUE_HELPER_H */

7
crypto/Kconfig
View file

@ -179,6 +179,11 @@ config CRYPTO_ABLK_HELPER_X86
depends on X86
select CRYPTO_CRYPTD
config CRYPTO_GLUE_HELPER_X86
tristate
depends on X86
select CRYPTO_ALGAPI
comment "Authenticated Encryption with Associated Data"
config CRYPTO_CCM
@ -793,6 +798,7 @@ config CRYPTO_SERPENT_SSE2_X86_64
select CRYPTO_ALGAPI
select CRYPTO_CRYPTD
select CRYPTO_ABLK_HELPER_X86
select CRYPTO_GLUE_HELPER_X86
select CRYPTO_SERPENT
select CRYPTO_LRW
select CRYPTO_XTS
@ -814,6 +820,7 @@ config CRYPTO_SERPENT_SSE2_586
select CRYPTO_ALGAPI
select CRYPTO_CRYPTD
select CRYPTO_ABLK_HELPER_X86
select CRYPTO_GLUE_HELPER_X86
select CRYPTO_SERPENT
select CRYPTO_LRW
select CRYPTO_XTS