From: Eric Biggers <ebigg...@google.com>
Convert the AVX implementation of CAST6 from the (deprecated) ablkcipher
and blkcipher interfaces over to the skcipher interface. Note that this
includes replacing the use of ablk_helper with crypto_simd.
Signed-off-by: Eric Biggers <ebigg...@google.com>
---
arch/x86/crypto/cast6_avx_glue.c | 311 +++++++++++++--------------------------
crypto/Kconfig | 9 +-
2 files changed, 104 insertions(+), 216 deletions(-)
diff --git a/arch/x86/crypto/cast6_avx_glue.c b/arch/x86/crypto/cast6_avx_glue.c
index d2fbf2be771e4..9fb66b5e94b23 100644
--- a/arch/x86/crypto/cast6_avx_glue.c
+++ b/arch/x86/crypto/cast6_avx_glue.c
@@ -24,16 +24,12 @@
*/
#include <linux/module.h>
-#include <linux/hardirq.h>
#include <linux/types.h>
#include <linux/crypto.h>
#include <linux/err.h>
-#include <crypto/ablk_helper.h>
#include <crypto/algapi.h>
#include <crypto/cast6.h>
-#include <crypto/cryptd.h>
-#include <crypto/b128ops.h>
-#include <crypto/ctr.h>
+#include <crypto/internal/simd.h>
#include <crypto/xts.h>
#include <asm/crypto/glue_helper.h>
@@ -54,6 +50,12 @@ asmlinkage void cast6_xts_enc_8way(struct cast6_ctx *ctx, u8
*dst,
asmlinkage void cast6_xts_dec_8way(struct cast6_ctx *ctx, u8 *dst,
const u8 *src, le128 *iv);
+static int cast6_setkey_skcipher(struct crypto_skcipher *tfm,
+ const u8 *key, unsigned int keylen)
+{
+ return cast6_setkey(&tfm->base, key, keylen);
+}
+
static void cast6_xts_enc(void *ctx, u128 *dst, const u128 *src, le128 *iv)
{
glue_xts_crypt_128bit_one(ctx, dst, src, iv,
@@ -155,36 +157,30 @@ static const struct common_glue_ctx cast6_dec_xts = {
} }
};
-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)
{
- return glue_ecb_crypt_128bit(&cast6_enc, desc, dst, src, nbytes);
+ return glue_ecb_req_128bit(&cast6_enc, req);
}
-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)
{
- return glue_ecb_crypt_128bit(&cast6_dec, desc, dst, src, nbytes);
+ return glue_ecb_req_128bit(&cast6_dec, req);
}
-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)
{
- return glue_cbc_encrypt_128bit(GLUE_FUNC_CAST(__cast6_encrypt), desc,
- dst, src, nbytes);
+ return glue_cbc_encrypt_req_128bit(GLUE_FUNC_CAST(__cast6_encrypt),
+ req);
}
-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)
{
- return glue_cbc_decrypt_128bit(&cast6_dec_cbc, desc, dst, src,
- nbytes);
+ return glue_cbc_decrypt_req_128bit(&cast6_dec_cbc, req);
}
-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)
{
- return glue_ctr_crypt_128bit(&cast6_ctr, desc, dst, src, nbytes);
+ return glue_ctr_req_128bit(&cast6_ctr, req);
}
struct cast6_xts_ctx {
@@ -192,14 +188,14 @@ struct cast6_xts_ctx {
struct cast6_ctx crypt_ctx;
};
-static int xts_cast6_setkey(struct crypto_tfm *tfm, const u8 *key,
- unsigned int keylen)
+static int xts_cast6_setkey(struct crypto_skcipher *tfm, const u8 *key,
+ unsigned int keylen)
{
- struct cast6_xts_ctx *ctx = crypto_tfm_ctx(tfm);
- u32 *flags = &tfm->crt_flags;
+ struct cast6_xts_ctx *ctx = crypto_skcipher_ctx(tfm);
+ u32 *flags = &tfm->base.crt_flags;
int err;
- err = xts_check_key(tfm, key, keylen);
+ err = xts_verify_key(tfm, key, keylen);
if (err)
return err;
@@ -213,197 +209,87 @@ static int xts_cast6_setkey(struct crypto_tfm *tfm,
const u8 *key,
flags);
}
-static int xts_encrypt(struct blkcipher_desc *desc, struct scatterlist *dst,
- struct scatterlist *src, unsigned int nbytes)
+static int xts_encrypt(struct skcipher_request *req)
{
- struct cast6_xts_ctx *ctx = crypto_blkcipher_ctx(desc->tfm);
+ struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
+ struct cast6_xts_ctx *ctx = crypto_skcipher_ctx(tfm);
- return glue_xts_crypt_128bit(&cast6_enc_xts, desc, dst, src, nbytes,
- XTS_TWEAK_CAST(__cast6_encrypt),
- &ctx->tweak_ctx, &ctx->crypt_ctx);
+ return glue_xts_req_128bit(&cast6_enc_xts, req,
+ XTS_TWEAK_CAST(__cast6_encrypt),
+ &ctx->tweak_ctx, &ctx->crypt_ctx);
}
-static int xts_decrypt(struct blkcipher_desc *desc, struct scatterlist *dst,
- struct scatterlist *src, unsigned int nbytes)
+static int xts_decrypt(struct skcipher_request *req)
{
- struct cast6_xts_ctx *ctx = crypto_blkcipher_ctx(desc->tfm);
+ struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
+ struct cast6_xts_ctx *ctx = crypto_skcipher_ctx(tfm);
- return glue_xts_crypt_128bit(&cast6_dec_xts, desc, dst, src, nbytes,
- XTS_TWEAK_CAST(__cast6_encrypt),
- &ctx->tweak_ctx, &ctx->crypt_ctx);
+ return glue_xts_req_128bit(&cast6_dec_xts, req,
+ XTS_TWEAK_CAST(__cast6_encrypt),
+ &ctx->tweak_ctx, &ctx->crypt_ctx);
}
-static struct crypto_alg cast6_algs[] = { {
- .cra_name = "__ecb-cast6-avx",
- .cra_driver_name = "__driver-ecb-cast6-avx",
- .cra_priority = 0,
- .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER |
- CRYPTO_ALG_INTERNAL,
- .cra_blocksize = CAST6_BLOCK_SIZE,
- .cra_ctxsize = sizeof(struct cast6_ctx),
- .cra_alignmask = 0,
- .cra_type = &crypto_blkcipher_type,
- .cra_module = THIS_MODULE,
- .cra_u = {
- .blkcipher = {
- .min_keysize = CAST6_MIN_KEY_SIZE,
- .max_keysize = CAST6_MAX_KEY_SIZE,
- .setkey = cast6_setkey,
- .encrypt = ecb_encrypt,
- .decrypt = ecb_decrypt,
- },
- },
-}, {
- .cra_name = "__cbc-cast6-avx",
- .cra_driver_name = "__driver-cbc-cast6-avx",
- .cra_priority = 0,
- .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER |
- CRYPTO_ALG_INTERNAL,
- .cra_blocksize = CAST6_BLOCK_SIZE,
- .cra_ctxsize = sizeof(struct cast6_ctx),
- .cra_alignmask = 0,
- .cra_type = &crypto_blkcipher_type,
- .cra_module = THIS_MODULE,
- .cra_u = {
- .blkcipher = {
- .min_keysize = CAST6_MIN_KEY_SIZE,
- .max_keysize = CAST6_MAX_KEY_SIZE,
- .setkey = cast6_setkey,
- .encrypt = cbc_encrypt,
- .decrypt = cbc_decrypt,
- },
- },
-}, {
- .cra_name = "__ctr-cast6-avx",
- .cra_driver_name = "__driver-ctr-cast6-avx",
- .cra_priority = 0,
- .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER |
- CRYPTO_ALG_INTERNAL,
- .cra_blocksize = 1,
- .cra_ctxsize = sizeof(struct cast6_ctx),
- .cra_alignmask = 0,
- .cra_type = &crypto_blkcipher_type,
- .cra_module = THIS_MODULE,
- .cra_u = {
- .blkcipher = {
- .min_keysize = CAST6_MIN_KEY_SIZE,
- .max_keysize = CAST6_MAX_KEY_SIZE,
- .ivsize = CAST6_BLOCK_SIZE,
- .setkey = cast6_setkey,
- .encrypt = ctr_crypt,
- .decrypt = ctr_crypt,
- },
- },
-}, {
- .cra_name = "__xts-cast6-avx",
- .cra_driver_name = "__driver-xts-cast6-avx",
- .cra_priority = 0,
- .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER |
- CRYPTO_ALG_INTERNAL,
- .cra_blocksize = CAST6_BLOCK_SIZE,
- .cra_ctxsize = sizeof(struct cast6_xts_ctx),
- .cra_alignmask = 0,
- .cra_type = &crypto_blkcipher_type,
- .cra_module = THIS_MODULE,
- .cra_u = {
- .blkcipher = {
- .min_keysize = CAST6_MIN_KEY_SIZE * 2,
- .max_keysize = CAST6_MAX_KEY_SIZE * 2,
- .ivsize = CAST6_BLOCK_SIZE,
- .setkey = xts_cast6_setkey,
- .encrypt = xts_encrypt,
- .decrypt = xts_decrypt,
- },
- },
-}, {
- .cra_name = "ecb(cast6)",
- .cra_driver_name = "ecb-cast6-avx",
- .cra_priority = 200,
- .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC,
- .cra_blocksize = CAST6_BLOCK_SIZE,
- .cra_ctxsize = sizeof(struct async_helper_ctx),
- .cra_alignmask = 0,
- .cra_type = &crypto_ablkcipher_type,
- .cra_module = THIS_MODULE,
- .cra_init = ablk_init,
- .cra_exit = ablk_exit,
- .cra_u = {
- .ablkcipher = {
- .min_keysize = CAST6_MIN_KEY_SIZE,
- .max_keysize = CAST6_MAX_KEY_SIZE,
- .setkey = ablk_set_key,
- .encrypt = ablk_encrypt,
- .decrypt = ablk_decrypt,
- },
- },
-}, {
- .cra_name = "cbc(cast6)",
- .cra_driver_name = "cbc-cast6-avx",
- .cra_priority = 200,
- .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC,
- .cra_blocksize = CAST6_BLOCK_SIZE,
- .cra_ctxsize = sizeof(struct async_helper_ctx),
- .cra_alignmask = 0,
- .cra_type = &crypto_ablkcipher_type,
- .cra_module = THIS_MODULE,
- .cra_init = ablk_init,
- .cra_exit = ablk_exit,
- .cra_u = {
- .ablkcipher = {
- .min_keysize = CAST6_MIN_KEY_SIZE,
- .max_keysize = CAST6_MAX_KEY_SIZE,
- .ivsize = CAST6_BLOCK_SIZE,
- .setkey = ablk_set_key,
- .encrypt = __ablk_encrypt,
- .decrypt = ablk_decrypt,
- },
- },
-}, {
- .cra_name = "ctr(cast6)",
- .cra_driver_name = "ctr-cast6-avx",
- .cra_priority = 200,
- .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC,
- .cra_blocksize = 1,
- .cra_ctxsize = sizeof(struct async_helper_ctx),
- .cra_alignmask = 0,
- .cra_type = &crypto_ablkcipher_type,
- .cra_module = THIS_MODULE,
- .cra_init = ablk_init,
- .cra_exit = ablk_exit,
- .cra_u = {
- .ablkcipher = {
- .min_keysize = CAST6_MIN_KEY_SIZE,
- .max_keysize = CAST6_MAX_KEY_SIZE,
- .ivsize = CAST6_BLOCK_SIZE,
- .setkey = ablk_set_key,
- .encrypt = ablk_encrypt,
- .decrypt = ablk_encrypt,
- .geniv = "chainiv",
- },
- },
-}, {
- .cra_name = "xts(cast6)",
- .cra_driver_name = "xts-cast6-avx",
- .cra_priority = 200,
- .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC,
- .cra_blocksize = CAST6_BLOCK_SIZE,
- .cra_ctxsize = sizeof(struct async_helper_ctx),
- .cra_alignmask = 0,
- .cra_type = &crypto_ablkcipher_type,
- .cra_module = THIS_MODULE,
- .cra_init = ablk_init,
- .cra_exit = ablk_exit,
- .cra_u = {
- .ablkcipher = {
- .min_keysize = CAST6_MIN_KEY_SIZE * 2,
- .max_keysize = CAST6_MAX_KEY_SIZE * 2,
- .ivsize = CAST6_BLOCK_SIZE,
- .setkey = ablk_set_key,
- .encrypt = ablk_encrypt,
- .decrypt = ablk_decrypt,
- },
+static struct skcipher_alg cast6_algs[] = {
+ {
+ .base.cra_name = "__ecb(cast6)",
+ .base.cra_driver_name = "__ecb-cast6-avx",
+ .base.cra_priority = 200,
+ .base.cra_flags = CRYPTO_ALG_INTERNAL,
+ .base.cra_blocksize = CAST6_BLOCK_SIZE,
+ .base.cra_ctxsize = sizeof(struct cast6_ctx),
+ .base.cra_module = THIS_MODULE,
+ .min_keysize = CAST6_MIN_KEY_SIZE,
+ .max_keysize = CAST6_MAX_KEY_SIZE,
+ .setkey = cast6_setkey_skcipher,
+ .encrypt = ecb_encrypt,
+ .decrypt = ecb_decrypt,
+ }, {
+ .base.cra_name = "__cbc(cast6)",
+ .base.cra_driver_name = "__cbc-cast6-avx",
+ .base.cra_priority = 200,
+ .base.cra_flags = CRYPTO_ALG_INTERNAL,
+ .base.cra_blocksize = CAST6_BLOCK_SIZE,
+ .base.cra_ctxsize = sizeof(struct cast6_ctx),
+ .base.cra_module = THIS_MODULE,
+ .min_keysize = CAST6_MIN_KEY_SIZE,
+ .max_keysize = CAST6_MAX_KEY_SIZE,
+ .ivsize = CAST6_BLOCK_SIZE,
+ .setkey = cast6_setkey_skcipher,
+ .encrypt = cbc_encrypt,
+ .decrypt = cbc_decrypt,
+ }, {
+ .base.cra_name = "__ctr(cast6)",
+ .base.cra_driver_name = "__ctr-cast6-avx",
+ .base.cra_priority = 200,
+ .base.cra_flags = CRYPTO_ALG_INTERNAL,
+ .base.cra_blocksize = 1,
+ .base.cra_ctxsize = sizeof(struct cast6_ctx),
+ .base.cra_module = THIS_MODULE,
+ .min_keysize = CAST6_MIN_KEY_SIZE,
+ .max_keysize = CAST6_MAX_KEY_SIZE,
+ .ivsize = CAST6_BLOCK_SIZE,
+ .chunksize = CAST6_BLOCK_SIZE,
+ .setkey = cast6_setkey_skcipher,
+ .encrypt = ctr_crypt,
+ .decrypt = ctr_crypt,
+ }, {
+ .base.cra_name = "__xts(cast6)",
+ .base.cra_driver_name = "__xts-cast6-avx",
+ .base.cra_priority = 200,
+ .base.cra_flags = CRYPTO_ALG_INTERNAL,
+ .base.cra_blocksize = CAST6_BLOCK_SIZE,
+ .base.cra_ctxsize = sizeof(struct cast6_xts_ctx),
+ .base.cra_module = THIS_MODULE,
+ .min_keysize = 2 * CAST6_MIN_KEY_SIZE,
+ .max_keysize = 2 * CAST6_MAX_KEY_SIZE,
+ .ivsize = CAST6_BLOCK_SIZE,
+ .setkey = xts_cast6_setkey,
+ .encrypt = xts_encrypt,
+ .decrypt = xts_decrypt,
},
-} };
+};
+
+static struct simd_skcipher_alg *cast6_simd_algs[ARRAY_SIZE(cast6_algs)];
static int __init cast6_init(void)
{
@@ -415,12 +301,15 @@ static int __init cast6_init(void)
return -ENODEV;
}
- return crypto_register_algs(cast6_algs, ARRAY_SIZE(cast6_algs));
+ return simd_register_skciphers_compat(cast6_algs,
+ ARRAY_SIZE(cast6_algs),
+ cast6_simd_algs);
}
static void __exit cast6_exit(void)
{
- crypto_unregister_algs(cast6_algs, ARRAY_SIZE(cast6_algs));
+ simd_unregister_skciphers(cast6_algs, ARRAY_SIZE(cast6_algs),
+ cast6_simd_algs);
}
module_init(cast6_init);
diff --git a/crypto/Kconfig b/crypto/Kconfig
index 4b4fbac8e1d50..773408f26d941 100644
--- a/crypto/Kconfig
+++ b/crypto/Kconfig
@@ -1260,12 +1260,11 @@ config CRYPTO_CAST6
config CRYPTO_CAST6_AVX_X86_64
tristate "CAST6 (CAST-256) cipher algorithm (x86_64/AVX)"
depends on X86 && 64BIT
- select CRYPTO_ALGAPI
- select CRYPTO_CRYPTD
- select CRYPTO_ABLK_HELPER
- select CRYPTO_GLUE_HELPER_X86
- select CRYPTO_CAST_COMMON
+ select CRYPTO_BLKCIPHER
select CRYPTO_CAST6
+ select CRYPTO_CAST_COMMON
+ select CRYPTO_GLUE_HELPER_X86
+ select CRYPTO_SIMD
select CRYPTO_XTS
help
The CAST6 encryption algorithm (synonymous with CAST-256) is
--
2.16.2
