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crypto: x86/camellia - convert to skcipher interface 

Convert the x86 asm implementation of Camellia from the (deprecated)
blkcipher interface over to the skcipher interface.

Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Eric Biggers 2018-02-19 23:48:22 -08:00 committed by Herbert Xu
parent 451cc49324
commit 1af6d03710
2 changed files with 80 additions and 84 deletions
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162
arch/x86/crypto/camellia_glue.c
View File

@ -23,7 +23,6 @@
*
*/
#include <asm/processor.h>
#include <asm/unaligned.h>
#include <linux/crypto.h>
#include <linux/init.h>
@ -1270,13 +1269,19 @@ int __camellia_setkey(struct camellia_ctx *cctx, const unsigned char *key,
}
EXPORT_SYMBOL_GPL(__camellia_setkey);
static int camellia_setkey(struct crypto_tfm *tfm, const u8 *in_key,
static int camellia_setkey(struct crypto_tfm *tfm, const u8 *key,
unsigned int key_len)
{
return __camellia_setkey(crypto_tfm_ctx(tfm), in_key, key_len,
return __camellia_setkey(crypto_tfm_ctx(tfm), key, key_len,
&tfm->crt_flags);
}
static int camellia_setkey_skcipher(struct crypto_skcipher *tfm, const u8 *key,
unsigned int key_len)
{
return camellia_setkey(&tfm->base, key, key_len);
}
void camellia_decrypt_cbc_2way(void *ctx, u128 *dst, const u128 *src)
{
u128 iv = *src;
@ -1371,39 +1376,33 @@ static const struct common_glue_ctx camellia_dec_cbc = {
} }
};
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(&camellia_enc, desc, dst, src, nbytes);
return glue_ecb_req_128bit(&camellia_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(&camellia_dec, desc, dst, src, nbytes);
return glue_ecb_req_128bit(&camellia_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(camellia_enc_blk), desc,
dst, src, nbytes);
return glue_cbc_encrypt_req_128bit(GLUE_FUNC_CAST(camellia_enc_blk),
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(&camellia_dec_cbc, desc, dst, src,
nbytes);
return glue_cbc_decrypt_req_128bit(&camellia_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(&camellia_ctr, desc, dst, src, nbytes);
return glue_ctr_req_128bit(&camellia_ctr, req);
}
static struct crypto_alg camellia_algs[] = { {
static struct crypto_alg camellia_cipher_alg = {
.cra_name = "camellia",
.cra_driver_name = "camellia-asm",
.cra_priority = 200,
@ -1421,66 +1420,50 @@ static struct crypto_alg camellia_algs[] = { {
.cia_decrypt = camellia_decrypt
}
}
}, {
.cra_name = "ecb(camellia)",
.cra_driver_name = "ecb-camellia-asm",
.cra_priority = 300,
.cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER,
.cra_blocksize = CAMELLIA_BLOCK_SIZE,
.cra_ctxsize = sizeof(struct camellia_ctx),
.cra_alignmask = 0,
.cra_type = &crypto_blkcipher_type,
.cra_module = THIS_MODULE,
.cra_u = {
.blkcipher = {
.min_keysize = CAMELLIA_MIN_KEY_SIZE,
.max_keysize = CAMELLIA_MAX_KEY_SIZE,
.setkey = camellia_setkey,
.encrypt = ecb_encrypt,
.decrypt = ecb_decrypt,
},
},
}, {
.cra_name = "cbc(camellia)",
.cra_driver_name = "cbc-camellia-asm",
.cra_priority = 300,
.cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER,
.cra_blocksize = CAMELLIA_BLOCK_SIZE,
.cra_ctxsize = sizeof(struct camellia_ctx),
.cra_alignmask = 0,
.cra_type = &crypto_blkcipher_type,
.cra_module = THIS_MODULE,
.cra_u = {
.blkcipher = {
.min_keysize = CAMELLIA_MIN_KEY_SIZE,
.max_keysize = CAMELLIA_MAX_KEY_SIZE,
.ivsize = CAMELLIA_BLOCK_SIZE,
.setkey = camellia_setkey,
.encrypt = cbc_encrypt,
.decrypt = cbc_decrypt,
},
},
}, {
.cra_name = "ctr(camellia)",
.cra_driver_name = "ctr-camellia-asm",
.cra_priority = 300,
.cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER,
.cra_blocksize = 1,
.cra_ctxsize = sizeof(struct camellia_ctx),
.cra_alignmask = 0,
.cra_type = &crypto_blkcipher_type,
.cra_module = THIS_MODULE,
.cra_u = {
.blkcipher = {
.min_keysize = CAMELLIA_MIN_KEY_SIZE,
.max_keysize = CAMELLIA_MAX_KEY_SIZE,
.ivsize = CAMELLIA_BLOCK_SIZE,
.setkey = camellia_setkey,
.encrypt = ctr_crypt,
.decrypt = ctr_crypt,
},
},
} };
};
static struct skcipher_alg camellia_skcipher_algs[] = {
{
.base.cra_name = "ecb(camellia)",
.base.cra_driver_name = "ecb-camellia-asm",
.base.cra_priority = 300,
.base.cra_blocksize = CAMELLIA_BLOCK_SIZE,
.base.cra_ctxsize = sizeof(struct camellia_ctx),
.base.cra_module = THIS_MODULE,
.min_keysize = CAMELLIA_MIN_KEY_SIZE,
.max_keysize = CAMELLIA_MAX_KEY_SIZE,
.setkey = camellia_setkey_skcipher,
.encrypt = ecb_encrypt,
.decrypt = ecb_decrypt,
}, {
.base.cra_name = "cbc(camellia)",
.base.cra_driver_name = "cbc-camellia-asm",
.base.cra_priority = 300,
.base.cra_blocksize = CAMELLIA_BLOCK_SIZE,
.base.cra_ctxsize = sizeof(struct camellia_ctx),
.base.cra_module = THIS_MODULE,
.min_keysize = CAMELLIA_MIN_KEY_SIZE,
.max_keysize = CAMELLIA_MAX_KEY_SIZE,
.ivsize = CAMELLIA_BLOCK_SIZE,
.setkey = camellia_setkey_skcipher,
.encrypt = cbc_encrypt,
.decrypt = cbc_decrypt,
}, {
.base.cra_name = "ctr(camellia)",
.base.cra_driver_name = "ctr-camellia-asm",
.base.cra_priority = 300,
.base.cra_blocksize = 1,
.base.cra_ctxsize = sizeof(struct camellia_ctx),
.base.cra_module = THIS_MODULE,
.min_keysize = CAMELLIA_MIN_KEY_SIZE,
.max_keysize = CAMELLIA_MAX_KEY_SIZE,
.ivsize = CAMELLIA_BLOCK_SIZE,
.chunksize = CAMELLIA_BLOCK_SIZE,
.setkey = camellia_setkey_skcipher,
.encrypt = ctr_crypt,
.decrypt = ctr_crypt,
}
};
static bool is_blacklisted_cpu(void)
{
@ -1506,6 +1489,8 @@ MODULE_PARM_DESC(force, "Force module load, ignore CPU blacklist");
static int __init init(void)
{
int err;
if (!force && is_blacklisted_cpu()) {
printk(KERN_INFO
"camellia-x86_64: performance on this CPU "
@ -1514,12 +1499,23 @@ static int __init init(void)
return -ENODEV;
}
return crypto_register_algs(camellia_algs, ARRAY_SIZE(camellia_algs));
err = crypto_register_alg(&camellia_cipher_alg);
if (err)
return err;
err = crypto_register_skciphers(camellia_skcipher_algs,
ARRAY_SIZE(camellia_skcipher_algs));
if (err)
crypto_unregister_alg(&camellia_cipher_alg);
return err;
}
static void __exit fini(void)
{
crypto_unregister_algs(camellia_algs, ARRAY_SIZE(camellia_algs));
crypto_unregister_alg(&camellia_cipher_alg);
crypto_unregister_skciphers(camellia_skcipher_algs,
ARRAY_SIZE(camellia_skcipher_algs));
}
module_init(init);

2
crypto/Kconfig
View File

@ -1145,7 +1145,7 @@ config CRYPTO_CAMELLIA_X86_64
tristate "Camellia cipher algorithm (x86_64)"
depends on X86 && 64BIT
depends on CRYPTO
select CRYPTO_ALGAPI
select CRYPTO_BLKCIPHER
select CRYPTO_GLUE_HELPER_X86
help
Camellia cipher algorithm module (x86_64).