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Commit 09c0f03b authored by Eric Biggers's avatar Eric Biggers Committed by Herbert Xu
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crypto: x86/des3_ede - convert to skcipher interface 

Convert the x86 asm implementation of Triple DES from the (deprecated)
blkcipher interface over to the skcipher interface.
Signed-off-by: default avatarEric Biggers <ebiggers@google.com>
Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
parent c1679171
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Showing with 120 additions and 120 deletions
arch/x86/crypto/des3_ede_glue.c
View file @ 09c0f03b
......@@ -20,13 +20,13 @@
*
*/
#include <asm/processor.h>
#include <crypto/algapi.h>
#include <crypto/des.h>
#include <crypto/internal/skcipher.h>
#include <linux/crypto.h>
#include <linux/init.h>
#include <linux/module.h>
#include <linux/types.h>
#include <crypto/algapi.h>
struct des3_ede_x86_ctx {
u32 enc_expkey[DES3_EDE_EXPKEY_WORDS];
......@@ -83,18 +83,18 @@ static void des3_ede_x86_decrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src)
des3_ede_dec_blk(crypto_tfm_ctx(tfm), dst, src);
}
static int ecb_crypt(struct blkcipher_desc *desc, struct blkcipher_walk *walk,
const u32 *expkey)
static int ecb_crypt(struct skcipher_request *req, const u32 *expkey)
{
unsigned int bsize = DES3_EDE_BLOCK_SIZE;
const unsigned int bsize = DES3_EDE_BLOCK_SIZE;
struct skcipher_walk walk;
unsigned int nbytes;
int err;
err = blkcipher_walk_virt(desc, walk);
err = skcipher_walk_virt(&walk, req, false);
while ((nbytes = walk->nbytes)) {
u8 *wsrc = walk->src.virt.addr;
u8 *wdst = walk->dst.virt.addr;
while ((nbytes = walk.nbytes)) {
u8 *wsrc = walk.src.virt.addr;
u8 *wdst = walk.dst.virt.addr;
/* Process four block batch */
if (nbytes >= bsize * 3) {
......@@ -121,36 +121,31 @@ static int ecb_crypt(struct blkcipher_desc *desc, struct blkcipher_walk *walk,
} while (nbytes >= bsize);
done:
err = blkcipher_walk_done(desc, walk, nbytes);
err = skcipher_walk_done(&walk, nbytes);
}
return err;
}
static int ecb_encrypt(struct blkcipher_desc *desc, struct scatterlist *dst,
struct scatterlist *src, unsigned int nbytes)
static int ecb_encrypt(struct skcipher_request *req)
{
struct des3_ede_x86_ctx *ctx = crypto_blkcipher_ctx(desc->tfm);
struct blkcipher_walk walk;
struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
struct des3_ede_x86_ctx *ctx = crypto_skcipher_ctx(tfm);
blkcipher_walk_init(&walk, dst, src, nbytes);
return ecb_crypt(desc, &walk, ctx->enc_expkey);
return ecb_crypt(req, ctx->enc_expkey);
}
static int ecb_decrypt(struct blkcipher_desc *desc, struct scatterlist *dst,
struct scatterlist *src, unsigned int nbytes)
static int ecb_decrypt(struct skcipher_request *req)
{
struct des3_ede_x86_ctx *ctx = crypto_blkcipher_ctx(desc->tfm);
struct blkcipher_walk walk;
struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
struct des3_ede_x86_ctx *ctx = crypto_skcipher_ctx(tfm);
blkcipher_walk_init(&walk, dst, src, nbytes);
return ecb_crypt(desc, &walk, ctx->dec_expkey);
return ecb_crypt(req, ctx->dec_expkey);
}
static unsigned int __cbc_encrypt(struct blkcipher_desc *desc,
struct blkcipher_walk *walk)
static unsigned int __cbc_encrypt(struct des3_ede_x86_ctx *ctx,
struct skcipher_walk *walk)
{
struct des3_ede_x86_ctx *ctx = crypto_blkcipher_ctx(desc->tfm);
unsigned int bsize = DES3_EDE_BLOCK_SIZE;
unsigned int nbytes = walk->nbytes;
u64 *src = (u64 *)walk->src.virt.addr;
......@@ -171,27 +166,27 @@ static unsigned int __cbc_encrypt(struct blkcipher_desc *desc,
return nbytes;
}
static int cbc_encrypt(struct blkcipher_desc *desc, struct scatterlist *dst,
struct scatterlist *src, unsigned int nbytes)
static int cbc_encrypt(struct skcipher_request *req)
{
struct blkcipher_walk walk;
struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
struct des3_ede_x86_ctx *ctx = crypto_skcipher_ctx(tfm);
struct skcipher_walk walk;
unsigned int nbytes;
int err;
blkcipher_walk_init(&walk, dst, src, nbytes);
err = blkcipher_walk_virt(desc, &walk);
err = skcipher_walk_virt(&walk, req, false);
while ((nbytes = walk.nbytes)) {
nbytes = __cbc_encrypt(desc, &walk);
err = blkcipher_walk_done(desc, &walk, nbytes);
nbytes = __cbc_encrypt(ctx, &walk);
err = skcipher_walk_done(&walk, nbytes);
}
return err;
}
static unsigned int __cbc_decrypt(struct blkcipher_desc *desc,
struct blkcipher_walk *walk)
static unsigned int __cbc_decrypt(struct des3_ede_x86_ctx *ctx,
struct skcipher_walk *walk)
{
struct des3_ede_x86_ctx *ctx = crypto_blkcipher_ctx(desc->tfm);
unsigned int bsize = DES3_EDE_BLOCK_SIZE;
unsigned int nbytes = walk->nbytes;
u64 *src = (u64 *)walk->src.virt.addr;
......@@ -250,25 +245,26 @@ static unsigned int __cbc_decrypt(struct blkcipher_desc *desc,
return nbytes;
}
static int cbc_decrypt(struct blkcipher_desc *desc, struct scatterlist *dst,
struct scatterlist *src, unsigned int nbytes)
static int cbc_decrypt(struct skcipher_request *req)
{
struct blkcipher_walk walk;
struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
struct des3_ede_x86_ctx *ctx = crypto_skcipher_ctx(tfm);
struct skcipher_walk walk;
unsigned int nbytes;
int err;
blkcipher_walk_init(&walk, dst, src, nbytes);
err = blkcipher_walk_virt(desc, &walk);
err = skcipher_walk_virt(&walk, req, false);
while ((nbytes = walk.nbytes)) {
nbytes = __cbc_decrypt(desc, &walk);
err = blkcipher_walk_done(desc, &walk, nbytes);
nbytes = __cbc_decrypt(ctx, &walk);
err = skcipher_walk_done(&walk, nbytes);
}
return err;
}
static void ctr_crypt_final(struct des3_ede_x86_ctx *ctx,
struct blkcipher_walk *walk)
struct skcipher_walk *walk)
{
u8 *ctrblk = walk->iv;
u8 keystream[DES3_EDE_BLOCK_SIZE];
......@@ -282,10 +278,9 @@ static void ctr_crypt_final(struct des3_ede_x86_ctx *ctx,
crypto_inc(ctrblk, DES3_EDE_BLOCK_SIZE);
}
static unsigned int __ctr_crypt(struct blkcipher_desc *desc,
struct blkcipher_walk *walk)
static unsigned int __ctr_crypt(struct des3_ede_x86_ctx *ctx,
struct skcipher_walk *walk)
{
struct des3_ede_x86_ctx *ctx = crypto_blkcipher_ctx(desc->tfm);
unsigned int bsize = DES3_EDE_BLOCK_SIZE;
unsigned int nbytes = walk->nbytes;
__be64 *src = (__be64 *)walk->src.virt.addr;
......@@ -333,23 +328,24 @@ static unsigned int __ctr_crypt(struct blkcipher_desc *desc,
return nbytes;
}
static int ctr_crypt(struct blkcipher_desc *desc, struct scatterlist *dst,
struct scatterlist *src, unsigned int nbytes)
static int ctr_crypt(struct skcipher_request *req)
{
struct blkcipher_walk walk;
struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
struct des3_ede_x86_ctx *ctx = crypto_skcipher_ctx(tfm);
struct skcipher_walk walk;
unsigned int nbytes;
int err;
blkcipher_walk_init(&walk, dst, src, nbytes);
err = blkcipher_walk_virt_block(desc, &walk, DES3_EDE_BLOCK_SIZE);
err = skcipher_walk_virt(&walk, req, false);
while ((nbytes = walk.nbytes) >= DES3_EDE_BLOCK_SIZE) {
nbytes = __ctr_crypt(desc, &walk);
err = blkcipher_walk_done(desc, &walk, nbytes);
nbytes = __ctr_crypt(ctx, &walk);
err = skcipher_walk_done(&walk, nbytes);
}
if (walk.nbytes) {
ctr_crypt_final(crypto_blkcipher_ctx(desc->tfm), &walk);
err = blkcipher_walk_done(desc, &walk, 0);
if (nbytes) {
ctr_crypt_final(ctx, &walk);
err = skcipher_walk_done(&walk, 0);
}
return err;
......@@ -381,7 +377,14 @@ static int des3_ede_x86_setkey(struct crypto_tfm *tfm, const u8 *key,
return 0;
}
static struct crypto_alg des3_ede_algs[4] = { {
static int des3_ede_x86_setkey_skcipher(struct crypto_skcipher *tfm,
const u8 *key,
unsigned int keylen)
{
return des3_ede_x86_setkey(&tfm->base, key, keylen);
}
static struct crypto_alg des3_ede_cipher = {
.cra_name = "des3_ede",
.cra_driver_name = "des3_ede-asm",
.cra_priority = 200,
......@@ -399,66 +402,50 @@ static struct crypto_alg des3_ede_algs[4] = { {
.cia_decrypt = des3_ede_x86_decrypt,
}
}
}, {
.cra_name = "ecb(des3_ede)",
.cra_driver_name = "ecb-des3_ede-asm",
.cra_priority = 300,
.cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER,
.cra_blocksize = DES3_EDE_BLOCK_SIZE,
.cra_ctxsize = sizeof(struct des3_ede_x86_ctx),
.cra_alignmask = 0,
.cra_type = &crypto_blkcipher_type,
.cra_module = THIS_MODULE,
.cra_u = {
.blkcipher = {
.min_keysize = DES3_EDE_KEY_SIZE,
.max_keysize = DES3_EDE_KEY_SIZE,
.setkey = des3_ede_x86_setkey,
.encrypt = ecb_encrypt,
.decrypt = ecb_decrypt,
},
},
}, {
.cra_name = "cbc(des3_ede)",
.cra_driver_name = "cbc-des3_ede-asm",
.cra_priority = 300,
.cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER,
.cra_blocksize = DES3_EDE_BLOCK_SIZE,
.cra_ctxsize = sizeof(struct des3_ede_x86_ctx),
.cra_alignmask = 0,
.cra_type = &crypto_blkcipher_type,
.cra_module = THIS_MODULE,
.cra_u = {
.blkcipher = {
.min_keysize = DES3_EDE_KEY_SIZE,
.max_keysize = DES3_EDE_KEY_SIZE,
.ivsize = DES3_EDE_BLOCK_SIZE,
.setkey = des3_ede_x86_setkey,
.encrypt = cbc_encrypt,
.decrypt = cbc_decrypt,
},
},
}, {
.cra_name = "ctr(des3_ede)",
.cra_driver_name = "ctr-des3_ede-asm",
.cra_priority = 300,
.cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER,
.cra_blocksize = 1,
.cra_ctxsize = sizeof(struct des3_ede_x86_ctx),
.cra_alignmask = 0,
.cra_type = &crypto_blkcipher_type,
.cra_module = THIS_MODULE,
.cra_u = {
.blkcipher = {
.min_keysize = DES3_EDE_KEY_SIZE,
.max_keysize = DES3_EDE_KEY_SIZE,
.ivsize = DES3_EDE_BLOCK_SIZE,
.setkey = des3_ede_x86_setkey,
.encrypt = ctr_crypt,
.decrypt = ctr_crypt,
},
},
} };
};
struct skcipher_alg des3_ede_skciphers[] = {
{
.base.cra_name = "ecb(des3_ede)",
.base.cra_driver_name = "ecb-des3_ede-asm",
.base.cra_priority = 300,
.base.cra_blocksize = DES3_EDE_BLOCK_SIZE,
.base.cra_ctxsize = sizeof(struct des3_ede_x86_ctx),
.base.cra_module = THIS_MODULE,
.min_keysize = DES3_EDE_KEY_SIZE,
.max_keysize = DES3_EDE_KEY_SIZE,
.setkey = des3_ede_x86_setkey_skcipher,
.encrypt = ecb_encrypt,
.decrypt = ecb_decrypt,
}, {
.base.cra_name = "cbc(des3_ede)",
.base.cra_driver_name = "cbc-des3_ede-asm",
.base.cra_priority = 300,
.base.cra_blocksize = DES3_EDE_BLOCK_SIZE,
.base.cra_ctxsize = sizeof(struct des3_ede_x86_ctx),
.base.cra_module = THIS_MODULE,
.min_keysize = DES3_EDE_KEY_SIZE,
.max_keysize = DES3_EDE_KEY_SIZE,
.ivsize = DES3_EDE_BLOCK_SIZE,
.setkey = des3_ede_x86_setkey_skcipher,
.encrypt = cbc_encrypt,
.decrypt = cbc_decrypt,
}, {
.base.cra_name = "ctr(des3_ede)",
.base.cra_driver_name = "ctr-des3_ede-asm",
.base.cra_priority = 300,
.base.cra_blocksize = 1,
.base.cra_ctxsize = sizeof(struct des3_ede_x86_ctx),
.base.cra_module = THIS_MODULE,
.min_keysize = DES3_EDE_KEY_SIZE,
.max_keysize = DES3_EDE_KEY_SIZE,
.ivsize = DES3_EDE_BLOCK_SIZE,
.chunksize = DES3_EDE_BLOCK_SIZE,
.setkey = des3_ede_x86_setkey_skcipher,
.encrypt = ctr_crypt,
.decrypt = ctr_crypt,
}
};
static bool is_blacklisted_cpu(void)
{
......@@ -483,17 +470,30 @@ MODULE_PARM_DESC(force, "Force module load, ignore CPU blacklist");
static int __init des3_ede_x86_init(void)
{
int err;
if (!force && is_blacklisted_cpu()) {
pr_info("des3_ede-x86_64: performance on this CPU would be suboptimal: disabling des3_ede-x86_64.\n");
return -ENODEV;
}
return crypto_register_algs(des3_ede_algs, ARRAY_SIZE(des3_ede_algs));
err = crypto_register_alg(&des3_ede_cipher);
if (err)
return err;
err = crypto_register_skciphers(des3_ede_skciphers,
ARRAY_SIZE(des3_ede_skciphers));
if (err)
crypto_unregister_alg(&des3_ede_cipher);
return err;
}
static void __exit des3_ede_x86_fini(void)
{
crypto_unregister_algs(des3_ede_algs, ARRAY_SIZE(des3_ede_algs));
crypto_unregister_alg(&des3_ede_cipher);
crypto_unregister_skciphers(des3_ede_skciphers,
ARRAY_SIZE(des3_ede_skciphers));
}
module_init(des3_ede_x86_init);
......
crypto/Kconfig
View file @ 09c0f03b
......@@ -1291,7 +1291,7 @@ config CRYPTO_DES_SPARC64
config CRYPTO_DES3_EDE_X86_64
tristate "Triple DES EDE cipher algorithm (x86-64)"
depends on X86 && 64BIT
select CRYPTO_ALGAPI
select CRYPTO_BLKCIPHER
select CRYPTO_DES
help
Triple DES EDE (FIPS 46-3) algorithm.
......
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