* Copyright (C) 2012 Johannes Goetzfried
* <Johannes.Goetzfried@informatik.stud.uni-erlangen.de>
*
- * Glue code based on serpent_sse2_glue.c by:
- * Copyright (C) 2011 Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
- *
* 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
#include <asm/i387.h>
#include <asm/xcr.h>
#include <asm/xsave.h>
+#include <asm/crypto/twofish.h>
#include <asm/crypto/ablk_helper.h>
+#include <asm/crypto/glue_helper.h>
#include <crypto/scatterwalk.h>
#include <linux/workqueue.h>
#include <linux/spinlock.h>
-
#define TWOFISH_PARALLEL_BLOCKS 8
-/* regular block cipher functions from twofish_x86_64 module */
-asmlinkage void twofish_enc_blk(struct twofish_ctx *ctx, u8 *dst,
- const u8 *src);
-asmlinkage void twofish_dec_blk(struct twofish_ctx *ctx, u8 *dst,
- const u8 *src);
-
-/* 3-way parallel cipher functions from twofish_x86_64-3way module */
-asmlinkage void __twofish_enc_blk_3way(struct twofish_ctx *ctx, u8 *dst,
- const u8 *src, bool xor);
-asmlinkage void twofish_dec_blk_3way(struct twofish_ctx *ctx, u8 *dst,
- const u8 *src);
-
static inline void twofish_enc_blk_3way(struct twofish_ctx *ctx, u8 *dst,
const u8 *src)
{
__twofish_enc_blk_3way(ctx, dst, src, false);
}
-static inline void twofish_enc_blk_3way_xor(struct twofish_ctx *ctx, u8 *dst,
- const u8 *src)
-{
- __twofish_enc_blk_3way(ctx, dst, src, true);
-}
-
/* 8-way parallel cipher functions */
asmlinkage void __twofish_enc_blk_8way(struct twofish_ctx *ctx, u8 *dst,
const u8 *src, bool xor);
twofish_dec_blk_8way(ctx, dst, src);
}
-
-static inline bool twofish_fpu_begin(bool fpu_enabled, unsigned int nbytes)
+static void twofish_dec_blk_cbc_xway(void *ctx, u128 *dst, const u128 *src)
{
- if (fpu_enabled)
- return true;
+ u128 ivs[TWOFISH_PARALLEL_BLOCKS - 1];
+ unsigned int j;
- /* AVX is only used when chunk to be processed is large enough, so
- * do not enable FPU until it is necessary.
- */
- if (nbytes < TF_BLOCK_SIZE * TWOFISH_PARALLEL_BLOCKS)
- return false;
+ for (j = 0; j < TWOFISH_PARALLEL_BLOCKS - 1; j++)
+ ivs[j] = src[j];
- kernel_fpu_begin();
- return true;
-}
+ twofish_dec_blk_xway(ctx, (u8 *)dst, (u8 *)src);
-static inline void twofish_fpu_end(bool fpu_enabled)
-{
- if (fpu_enabled)
- kernel_fpu_end();
+ for (j = 0; j < TWOFISH_PARALLEL_BLOCKS - 1; j++)
+ u128_xor(dst + (j + 1), dst + (j + 1), ivs + j);
}
-static int ecb_crypt(struct blkcipher_desc *desc, struct blkcipher_walk *walk,
- bool enc)
+static void twofish_enc_blk_ctr_xway(void *ctx, u128 *dst, const u128 *src,
+ u128 *iv)
{
- bool fpu_enabled = false;
- struct twofish_ctx *ctx = crypto_blkcipher_ctx(desc->tfm);
- const unsigned int bsize = TF_BLOCK_SIZE;
- unsigned int nbytes;
- int err;
+ be128 ctrblks[TWOFISH_PARALLEL_BLOCKS];
+ unsigned int i;
- err = blkcipher_walk_virt(desc, walk);
- desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP;
+ for (i = 0; i < TWOFISH_PARALLEL_BLOCKS; i++) {
+ if (dst != src)
+ dst[i] = src[i];
- while ((nbytes = walk->nbytes)) {
- u8 *wsrc = walk->src.virt.addr;
- u8 *wdst = walk->dst.virt.addr;
-
- fpu_enabled = twofish_fpu_begin(fpu_enabled, nbytes);
-
- /* Process multi-block batch */
- if (nbytes >= bsize * TWOFISH_PARALLEL_BLOCKS) {
- do {
- if (enc)
- twofish_enc_blk_xway(ctx, wdst, wsrc);
- else
- twofish_dec_blk_xway(ctx, wdst, wsrc);
-
- wsrc += bsize * TWOFISH_PARALLEL_BLOCKS;
- wdst += bsize * TWOFISH_PARALLEL_BLOCKS;
- nbytes -= bsize * TWOFISH_PARALLEL_BLOCKS;
- } while (nbytes >= bsize * TWOFISH_PARALLEL_BLOCKS);
-
- if (nbytes < bsize)
- goto done;
- }
-
- /* Process three block batch */
- if (nbytes >= bsize * 3) {
- do {
- if (enc)
- twofish_enc_blk_3way(ctx, wdst, wsrc);
- else
- twofish_dec_blk_3way(ctx, wdst, wsrc);
-
- wsrc += bsize * 3;
- wdst += bsize * 3;
- nbytes -= bsize * 3;
- } while (nbytes >= bsize * 3);
-
- if (nbytes < bsize)
- goto done;
- }
-
- /* Handle leftovers */
- do {
- if (enc)
- twofish_enc_blk(ctx, wdst, wsrc);
- else
- twofish_dec_blk(ctx, wdst, wsrc);
-
- wsrc += bsize;
- wdst += bsize;
- nbytes -= bsize;
- } while (nbytes >= bsize);
-
-done:
- err = blkcipher_walk_done(desc, walk, nbytes);
+ u128_to_be128(&ctrblks[i], iv);
+ u128_inc(iv);
}
- twofish_fpu_end(fpu_enabled);
- return err;
+ twofish_enc_blk_xway_xor(ctx, (u8 *)dst, (u8 *)ctrblks);
}
+static const struct common_glue_ctx twofish_enc = {
+ .num_funcs = 3,
+ .fpu_blocks_limit = TWOFISH_PARALLEL_BLOCKS,
+
+ .funcs = { {
+ .num_blocks = TWOFISH_PARALLEL_BLOCKS,
+ .fn_u = { .ecb = GLUE_FUNC_CAST(twofish_enc_blk_xway) }
+ }, {
+ .num_blocks = 3,
+ .fn_u = { .ecb = GLUE_FUNC_CAST(twofish_enc_blk_3way) }
+ }, {
+ .num_blocks = 1,
+ .fn_u = { .ecb = GLUE_FUNC_CAST(twofish_enc_blk) }
+ } }
+};
+
+static const struct common_glue_ctx twofish_ctr = {
+ .num_funcs = 3,
+ .fpu_blocks_limit = TWOFISH_PARALLEL_BLOCKS,
+
+ .funcs = { {
+ .num_blocks = TWOFISH_PARALLEL_BLOCKS,
+ .fn_u = { .ctr = GLUE_CTR_FUNC_CAST(twofish_enc_blk_ctr_xway) }
+ }, {
+ .num_blocks = 3,
+ .fn_u = { .ctr = GLUE_CTR_FUNC_CAST(twofish_enc_blk_ctr_3way) }
+ }, {
+ .num_blocks = 1,
+ .fn_u = { .ctr = GLUE_CTR_FUNC_CAST(twofish_enc_blk_ctr) }
+ } }
+};
+
+static const struct common_glue_ctx twofish_dec = {
+ .num_funcs = 3,
+ .fpu_blocks_limit = TWOFISH_PARALLEL_BLOCKS,
+
+ .funcs = { {
+ .num_blocks = TWOFISH_PARALLEL_BLOCKS,
+ .fn_u = { .ecb = GLUE_FUNC_CAST(twofish_dec_blk_xway) }
+ }, {
+ .num_blocks = 3,
+ .fn_u = { .ecb = GLUE_FUNC_CAST(twofish_dec_blk_3way) }
+ }, {
+ .num_blocks = 1,
+ .fn_u = { .ecb = GLUE_FUNC_CAST(twofish_dec_blk) }
+ } }
+};
+
+static const struct common_glue_ctx twofish_dec_cbc = {
+ .num_funcs = 3,
+ .fpu_blocks_limit = TWOFISH_PARALLEL_BLOCKS,
+
+ .funcs = { {
+ .num_blocks = TWOFISH_PARALLEL_BLOCKS,
+ .fn_u = { .cbc = GLUE_CBC_FUNC_CAST(twofish_dec_blk_cbc_xway) }
+ }, {
+ .num_blocks = 3,
+ .fn_u = { .cbc = GLUE_CBC_FUNC_CAST(twofish_dec_blk_cbc_3way) }
+ }, {
+ .num_blocks = 1,
+ .fn_u = { .cbc = GLUE_CBC_FUNC_CAST(twofish_dec_blk) }
+ } }
+};
+
static int ecb_encrypt(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 ecb_crypt(desc, &walk, true);
+ return glue_ecb_crypt_128bit(&twofish_enc, desc, dst, src, nbytes);
}
static int ecb_decrypt(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 ecb_crypt(desc, &walk, false);
-}
-
-static unsigned int __cbc_encrypt(struct blkcipher_desc *desc,
- struct blkcipher_walk *walk)
-{
- struct twofish_ctx *ctx = crypto_blkcipher_ctx(desc->tfm);
- const unsigned int bsize = TF_BLOCK_SIZE;
- 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);
- twofish_enc_blk(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;
+ return glue_ecb_crypt_128bit(&twofish_dec, desc, dst, src, nbytes);
}
static int cbc_encrypt(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 = __cbc_encrypt(desc, &walk);
- err = blkcipher_walk_done(desc, &walk, nbytes);
- }
-
- return err;
-}
-
-static unsigned int __cbc_decrypt(struct blkcipher_desc *desc,
- struct blkcipher_walk *walk)
-{
- struct twofish_ctx *ctx = crypto_blkcipher_ctx(desc->tfm);
- const unsigned int bsize = TF_BLOCK_SIZE;
- unsigned int nbytes = walk->nbytes;
- u128 *src = (u128 *)walk->src.virt.addr;
- u128 *dst = (u128 *)walk->dst.virt.addr;
- u128 ivs[TWOFISH_PARALLEL_BLOCKS - 1];
- u128 last_iv;
- int i;
-
- /* Start of the last block. */
- src += nbytes / bsize - 1;
- dst += nbytes / bsize - 1;
-
- last_iv = *src;
-
- /* Process multi-block batch */
- if (nbytes >= bsize * TWOFISH_PARALLEL_BLOCKS) {
- do {
- nbytes -= bsize * (TWOFISH_PARALLEL_BLOCKS - 1);
- src -= TWOFISH_PARALLEL_BLOCKS - 1;
- dst -= TWOFISH_PARALLEL_BLOCKS - 1;
-
- for (i = 0; i < TWOFISH_PARALLEL_BLOCKS - 1; i++)
- ivs[i] = src[i];
-
- twofish_dec_blk_xway(ctx, (u8 *)dst, (u8 *)src);
-
- for (i = 0; i < TWOFISH_PARALLEL_BLOCKS - 1; i++)
- u128_xor(dst + (i + 1), dst + (i + 1), ivs + i);
-
- nbytes -= bsize;
- if (nbytes < bsize)
- goto done;
-
- u128_xor(dst, dst, src - 1);
- src -= 1;
- dst -= 1;
- } while (nbytes >= bsize * TWOFISH_PARALLEL_BLOCKS);
-
- if (nbytes < bsize)
- goto done;
- }
-
- /* Process three block batch */
- if (nbytes >= bsize * 3) {
- do {
- nbytes -= bsize * (3 - 1);
- src -= 3 - 1;
- dst -= 3 - 1;
-
- ivs[0] = src[0];
- ivs[1] = src[1];
-
- twofish_dec_blk_3way(ctx, (u8 *)dst, (u8 *)src);
-
- u128_xor(dst + 1, dst + 1, ivs + 0);
- u128_xor(dst + 2, dst + 2, ivs + 1);
-
- nbytes -= bsize;
- if (nbytes < bsize)
- goto done;
-
- u128_xor(dst, dst, src - 1);
- src -= 1;
- dst -= 1;
- } while (nbytes >= bsize * 3);
-
- if (nbytes < bsize)
- goto done;
- }
-
- /* Handle leftovers */
- for (;;) {
- twofish_dec_blk(ctx, (u8 *)dst, (u8 *)src);
-
- nbytes -= bsize;
- if (nbytes < bsize)
- break;
-
- u128_xor(dst, dst, src - 1);
- src -= 1;
- dst -= 1;
- }
-
-done:
- u128_xor(dst, dst, (u128 *)walk->iv);
- *(u128 *)walk->iv = last_iv;
-
- return nbytes;
+ return glue_cbc_encrypt_128bit(GLUE_FUNC_CAST(twofish_enc_blk), desc,
+ dst, src, nbytes);
}
static int cbc_decrypt(struct blkcipher_desc *desc, struct scatterlist *dst,
struct scatterlist *src, unsigned int nbytes)
{
- bool fpu_enabled = false;
- struct blkcipher_walk walk;
- int err;
-
- blkcipher_walk_init(&walk, dst, src, nbytes);
- err = blkcipher_walk_virt(desc, &walk);
- desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP;
-
- while ((nbytes = walk.nbytes)) {
- fpu_enabled = twofish_fpu_begin(fpu_enabled, nbytes);
- nbytes = __cbc_decrypt(desc, &walk);
- err = blkcipher_walk_done(desc, &walk, nbytes);
- }
-
- twofish_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);
+ return glue_cbc_decrypt_128bit(&twofish_dec_cbc, desc, dst, src,
+ nbytes);
}
-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)
+static int ctr_crypt(struct blkcipher_desc *desc, struct scatterlist *dst,
+ struct scatterlist *src, unsigned int nbytes)
{
- i->b++;
- if (!i->b)
- i->a++;
+ return glue_ctr_crypt_128bit(&twofish_ctr, desc, dst, src, nbytes);
}
-static void ctr_crypt_final(struct blkcipher_desc *desc,
- struct blkcipher_walk *walk)
+static inline bool twofish_fpu_begin(bool fpu_enabled, unsigned int nbytes)
{
- struct twofish_ctx *ctx = crypto_blkcipher_ctx(desc->tfm);
- u8 *ctrblk = walk->iv;
- u8 keystream[TF_BLOCK_SIZE];
- u8 *src = walk->src.virt.addr;
- u8 *dst = walk->dst.virt.addr;
- unsigned int nbytes = walk->nbytes;
-
- twofish_enc_blk(ctx, keystream, ctrblk);
- crypto_xor(keystream, src, nbytes);
- memcpy(dst, keystream, nbytes);
-
- crypto_inc(ctrblk, TF_BLOCK_SIZE);
+ return glue_fpu_begin(TF_BLOCK_SIZE, TWOFISH_PARALLEL_BLOCKS, NULL,
+ fpu_enabled, nbytes);
}
-static unsigned int __ctr_crypt(struct blkcipher_desc *desc,
- struct blkcipher_walk *walk)
-{
- struct twofish_ctx *ctx = crypto_blkcipher_ctx(desc->tfm);
- const unsigned int bsize = TF_BLOCK_SIZE;
- unsigned int nbytes = walk->nbytes;
- u128 *src = (u128 *)walk->src.virt.addr;
- u128 *dst = (u128 *)walk->dst.virt.addr;
- u128 ctrblk;
- be128 ctrblocks[TWOFISH_PARALLEL_BLOCKS];
- int i;
-
- be128_to_u128(&ctrblk, (be128 *)walk->iv);
-
- /* Process multi-block batch */
- if (nbytes >= bsize * TWOFISH_PARALLEL_BLOCKS) {
- do {
- /* create ctrblks for parallel encrypt */
- for (i = 0; i < TWOFISH_PARALLEL_BLOCKS; i++) {
- if (dst != src)
- dst[i] = src[i];
-
- u128_to_be128(&ctrblocks[i], &ctrblk);
- u128_inc(&ctrblk);
- }
-
- twofish_enc_blk_xway_xor(ctx, (u8 *)dst,
- (u8 *)ctrblocks);
-
- src += TWOFISH_PARALLEL_BLOCKS;
- dst += TWOFISH_PARALLEL_BLOCKS;
- nbytes -= bsize * TWOFISH_PARALLEL_BLOCKS;
- } while (nbytes >= bsize * TWOFISH_PARALLEL_BLOCKS);
-
- if (nbytes < bsize)
- goto done;
- }
-
- /* Process three block batch */
- if (nbytes >= bsize * 3) {
- do {
- if (dst != src) {
- dst[0] = src[0];
- dst[1] = src[1];
- dst[2] = src[2];
- }
-
- /* create ctrblks for parallel encrypt */
- u128_to_be128(&ctrblocks[0], &ctrblk);
- u128_inc(&ctrblk);
- u128_to_be128(&ctrblocks[1], &ctrblk);
- u128_inc(&ctrblk);
- u128_to_be128(&ctrblocks[2], &ctrblk);
- u128_inc(&ctrblk);
-
- twofish_enc_blk_3way_xor(ctx, (u8 *)dst,
- (u8 *)ctrblocks);
-
- src += 3;
- dst += 3;
- nbytes -= bsize * 3;
- } while (nbytes >= bsize * 3);
-
- if (nbytes < bsize)
- goto done;
- }
-
- /* Handle leftovers */
- do {
- if (dst != src)
- *dst = *src;
-
- u128_to_be128(&ctrblocks[0], &ctrblk);
- u128_inc(&ctrblk);
-
- twofish_enc_blk(ctx, (u8 *)ctrblocks, (u8 *)ctrblocks);
- u128_xor(dst, dst, (u128 *)ctrblocks);
-
- src += 1;
- dst += 1;
- nbytes -= bsize;
- } while (nbytes >= bsize);
-
-done:
- u128_to_be128((be128 *)walk->iv, &ctrblk);
- return nbytes;
-}
-
-static int ctr_crypt(struct blkcipher_desc *desc, struct scatterlist *dst,
- struct scatterlist *src, unsigned int nbytes)
+static inline void twofish_fpu_end(bool fpu_enabled)
{
- bool fpu_enabled = false;
- struct blkcipher_walk walk;
- int err;
-
- blkcipher_walk_init(&walk, dst, src, nbytes);
- err = blkcipher_walk_virt_block(desc, &walk, TF_BLOCK_SIZE);
- desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP;
-
- while ((nbytes = walk.nbytes) >= TF_BLOCK_SIZE) {
- fpu_enabled = twofish_fpu_begin(fpu_enabled, nbytes);
- nbytes = __ctr_crypt(desc, &walk);
- err = blkcipher_walk_done(desc, &walk, nbytes);
- }
-
- twofish_fpu_end(fpu_enabled);
-
- if (walk.nbytes) {
- ctr_crypt_final(desc, &walk);
- err = blkcipher_walk_done(desc, &walk, 0);
- }
-
- return err;
+ glue_fpu_end(fpu_enabled);
}
struct crypt_priv {
twofish_dec_blk(ctx->ctx, srcdst, srcdst);
}
-struct twofish_lrw_ctx {
- struct lrw_table_ctx lrw_table;
- struct twofish_ctx twofish_ctx;
-};
-
-static int lrw_twofish_setkey(struct crypto_tfm *tfm, const u8 *key,
- unsigned int keylen)
-{
- struct twofish_lrw_ctx *ctx = crypto_tfm_ctx(tfm);
- int err;
-
- err = __twofish_setkey(&ctx->twofish_ctx, key,
- keylen - TF_BLOCK_SIZE, &tfm->crt_flags);
- if (err)
- return err;
-
- return lrw_init_table(&ctx->lrw_table, key + keylen -
- TF_BLOCK_SIZE);
-}
-
static int lrw_encrypt(struct blkcipher_desc *desc, struct scatterlist *dst,
struct scatterlist *src, unsigned int nbytes)
{
return ret;
}
-static void lrw_exit_tfm(struct crypto_tfm *tfm)
-{
- struct twofish_lrw_ctx *ctx = crypto_tfm_ctx(tfm);
-
- lrw_free_table(&ctx->lrw_table);
-}
-
-struct twofish_xts_ctx {
- struct twofish_ctx tweak_ctx;
- struct twofish_ctx crypt_ctx;
-};
-
-static int xts_twofish_setkey(struct crypto_tfm *tfm, const u8 *key,
- unsigned int keylen)
-{
- struct twofish_xts_ctx *ctx = crypto_tfm_ctx(tfm);
- u32 *flags = &tfm->crt_flags;
- int err;
-
- /* key consists of keys of equal size concatenated, therefore
- * the length must be even
- */
- if (keylen % 2) {
- *flags |= CRYPTO_TFM_RES_BAD_KEY_LEN;
- return -EINVAL;
- }
-
- /* first half of xts-key is for crypt */
- err = __twofish_setkey(&ctx->crypt_ctx, key, keylen / 2, flags);
- if (err)
- return err;
-
- /* second half of xts-key is for tweak */
- return __twofish_setkey(&ctx->tweak_ctx,
- key + keylen / 2, keylen / 2, flags);
-}
-
static int xts_encrypt(struct blkcipher_desc *desc, struct scatterlist *dst,
struct scatterlist *src, unsigned int nbytes)
{
.cra_type = &crypto_blkcipher_type,
.cra_module = THIS_MODULE,
.cra_list = LIST_HEAD_INIT(twofish_algs[3].cra_list),
- .cra_exit = lrw_exit_tfm,
+ .cra_exit = lrw_twofish_exit_tfm,
.cra_u = {
.blkcipher = {
.min_keysize = TF_MIN_KEY_SIZE +
#include <crypto/algapi.h>
#include <crypto/twofish.h>
#include <crypto/b128ops.h>
+#include <asm/crypto/twofish.h>
#include <asm/crypto/glue_helper.h>
#include <crypto/lrw.h>
#include <crypto/xts.h>
-/* regular block cipher functions from twofish_x86_64 module */
-asmlinkage void twofish_enc_blk(struct twofish_ctx *ctx, u8 *dst,
- const u8 *src);
-asmlinkage void twofish_dec_blk(struct twofish_ctx *ctx, u8 *dst,
- const u8 *src);
-
-/* 3-way parallel cipher functions */
-asmlinkage void __twofish_enc_blk_3way(struct twofish_ctx *ctx, u8 *dst,
- const u8 *src, bool xor);
EXPORT_SYMBOL_GPL(__twofish_enc_blk_3way);
-asmlinkage void twofish_dec_blk_3way(struct twofish_ctx *ctx, u8 *dst,
- const u8 *src);
EXPORT_SYMBOL_GPL(twofish_dec_blk_3way);
static inline void twofish_enc_blk_3way(struct twofish_ctx *ctx, u8 *dst,
__twofish_enc_blk_3way(ctx, dst, src, true);
}
-static void twofish_dec_blk_cbc_3way(void *ctx, u128 *dst, const u128 *src)
+void twofish_dec_blk_cbc_3way(void *ctx, u128 *dst, const u128 *src)
{
u128 ivs[2];
u128_xor(&dst[1], &dst[1], &ivs[0]);
u128_xor(&dst[2], &dst[2], &ivs[1]);
}
+EXPORT_SYMBOL_GPL(twofish_dec_blk_cbc_3way);
-static void twofish_enc_blk_ctr(void *ctx, u128 *dst, const u128 *src, u128 *iv)
+void twofish_enc_blk_ctr(void *ctx, u128 *dst, const u128 *src, u128 *iv)
{
be128 ctrblk;
twofish_enc_blk(ctx, (u8 *)&ctrblk, (u8 *)&ctrblk);
u128_xor(dst, dst, (u128 *)&ctrblk);
}
+EXPORT_SYMBOL_GPL(twofish_enc_blk_ctr);
-static void twofish_enc_blk_ctr_3way(void *ctx, u128 *dst, const u128 *src,
+void twofish_enc_blk_ctr_3way(void *ctx, u128 *dst, const u128 *src,
u128 *iv)
{
be128 ctrblks[3];
twofish_enc_blk_xor_3way(ctx, (u8 *)dst, (u8 *)ctrblks);
}
+EXPORT_SYMBOL_GPL(twofish_enc_blk_ctr_3way);
static const struct common_glue_ctx twofish_enc = {
.num_funcs = 2,
twofish_dec_blk(ctx, srcdst, srcdst);
}
-struct twofish_lrw_ctx {
- struct lrw_table_ctx lrw_table;
- struct twofish_ctx twofish_ctx;
-};
-
-static int lrw_twofish_setkey(struct crypto_tfm *tfm, const u8 *key,
- unsigned int keylen)
+int lrw_twofish_setkey(struct crypto_tfm *tfm, const u8 *key,
+ unsigned int keylen)
{
struct twofish_lrw_ctx *ctx = crypto_tfm_ctx(tfm);
int err;
return lrw_init_table(&ctx->lrw_table, key + keylen - TF_BLOCK_SIZE);
}
+EXPORT_SYMBOL_GPL(lrw_twofish_setkey);
static int lrw_encrypt(struct blkcipher_desc *desc, struct scatterlist *dst,
struct scatterlist *src, unsigned int nbytes)
return lrw_crypt(desc, dst, src, nbytes, &req);
}
-static void lrw_exit_tfm(struct crypto_tfm *tfm)
+void lrw_twofish_exit_tfm(struct crypto_tfm *tfm)
{
struct twofish_lrw_ctx *ctx = crypto_tfm_ctx(tfm);
lrw_free_table(&ctx->lrw_table);
}
+EXPORT_SYMBOL_GPL(lrw_twofish_exit_tfm);
-struct twofish_xts_ctx {
- struct twofish_ctx tweak_ctx;
- struct twofish_ctx crypt_ctx;
-};
-
-static int xts_twofish_setkey(struct crypto_tfm *tfm, const u8 *key,
- unsigned int keylen)
+int xts_twofish_setkey(struct crypto_tfm *tfm, const u8 *key,
+ unsigned int keylen)
{
struct twofish_xts_ctx *ctx = crypto_tfm_ctx(tfm);
u32 *flags = &tfm->crt_flags;
return __twofish_setkey(&ctx->tweak_ctx, key + keylen / 2, keylen / 2,
flags);
}
+EXPORT_SYMBOL_GPL(xts_twofish_setkey);
static int xts_encrypt(struct blkcipher_desc *desc, struct scatterlist *dst,
struct scatterlist *src, unsigned int nbytes)
.cra_type = &crypto_blkcipher_type,
.cra_module = THIS_MODULE,
.cra_list = LIST_HEAD_INIT(tf_algs[3].cra_list),
- .cra_exit = lrw_exit_tfm,
+ .cra_exit = lrw_twofish_exit_tfm,
.cra_u = {
.blkcipher = {
.min_keysize = TF_MIN_KEY_SIZE + TF_BLOCK_SIZE,
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