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crypto: x86/camellia - convert to skcipher interface

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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 <asm/unaligned.h>
#include <linux/crypto.h> #include <linux/crypto.h>
#include <linux/init.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); 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) 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); &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) void camellia_decrypt_cbc_2way(void *ctx, u128 *dst, const u128 *src)
{ {
u128 iv = *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, static int ecb_encrypt(struct skcipher_request *req)
struct scatterlist *src, unsigned int nbytes)
{ {
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, static int ecb_decrypt(struct skcipher_request *req)
struct scatterlist *src, unsigned int nbytes)
{ {
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, static int cbc_encrypt(struct skcipher_request *req)
struct scatterlist *src, unsigned int nbytes)
{ {
return glue_cbc_encrypt_128bit(GLUE_FUNC_CAST(camellia_enc_blk), desc, return glue_cbc_encrypt_req_128bit(GLUE_FUNC_CAST(camellia_enc_blk),
dst, src, nbytes); req);
} }
static int cbc_decrypt(struct blkcipher_desc *desc, struct scatterlist *dst, static int cbc_decrypt(struct skcipher_request *req)
struct scatterlist *src, unsigned int nbytes)
{ {
return glue_cbc_decrypt_128bit(&camellia_dec_cbc, desc, dst, src, return glue_cbc_decrypt_req_128bit(&camellia_dec_cbc, req);
nbytes);
} }
static int ctr_crypt(struct blkcipher_desc *desc, struct scatterlist *dst, static int ctr_crypt(struct skcipher_request *req)
struct scatterlist *src, unsigned int nbytes)
{ {
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_name = "camellia",
.cra_driver_name = "camellia-asm", .cra_driver_name = "camellia-asm",
.cra_priority = 200, .cra_priority = 200,
@ -1421,66 +1420,50 @@ static struct crypto_alg camellia_algs[] = { {
.cia_decrypt = camellia_decrypt .cia_decrypt = camellia_decrypt
} }
} }
}, { };
.cra_name = "ecb(camellia)",
.cra_driver_name = "ecb-camellia-asm", static struct skcipher_alg camellia_skcipher_algs[] = {
.cra_priority = 300, {
.cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER, .base.cra_name = "ecb(camellia)",
.cra_blocksize = CAMELLIA_BLOCK_SIZE, .base.cra_driver_name = "ecb-camellia-asm",
.cra_ctxsize = sizeof(struct camellia_ctx), .base.cra_priority = 300,
.cra_alignmask = 0, .base.cra_blocksize = CAMELLIA_BLOCK_SIZE,
.cra_type = &crypto_blkcipher_type, .base.cra_ctxsize = sizeof(struct camellia_ctx),
.cra_module = THIS_MODULE, .base.cra_module = THIS_MODULE,
.cra_u = { .min_keysize = CAMELLIA_MIN_KEY_SIZE,
.blkcipher = { .max_keysize = CAMELLIA_MAX_KEY_SIZE,
.min_keysize = CAMELLIA_MIN_KEY_SIZE, .setkey = camellia_setkey_skcipher,
.max_keysize = CAMELLIA_MAX_KEY_SIZE, .encrypt = ecb_encrypt,
.setkey = camellia_setkey, .decrypt = ecb_decrypt,
.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,
.cra_name = "cbc(camellia)", .base.cra_ctxsize = sizeof(struct camellia_ctx),
.cra_driver_name = "cbc-camellia-asm", .base.cra_module = THIS_MODULE,
.cra_priority = 300, .min_keysize = CAMELLIA_MIN_KEY_SIZE,
.cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER, .max_keysize = CAMELLIA_MAX_KEY_SIZE,
.cra_blocksize = CAMELLIA_BLOCK_SIZE, .ivsize = CAMELLIA_BLOCK_SIZE,
.cra_ctxsize = sizeof(struct camellia_ctx), .setkey = camellia_setkey_skcipher,
.cra_alignmask = 0, .encrypt = cbc_encrypt,
.cra_type = &crypto_blkcipher_type, .decrypt = cbc_decrypt,
.cra_module = THIS_MODULE, }, {
.cra_u = { .base.cra_name = "ctr(camellia)",
.blkcipher = { .base.cra_driver_name = "ctr-camellia-asm",
.min_keysize = CAMELLIA_MIN_KEY_SIZE, .base.cra_priority = 300,
.max_keysize = CAMELLIA_MAX_KEY_SIZE, .base.cra_blocksize = 1,
.ivsize = CAMELLIA_BLOCK_SIZE, .base.cra_ctxsize = sizeof(struct camellia_ctx),
.setkey = camellia_setkey, .base.cra_module = THIS_MODULE,
.encrypt = cbc_encrypt, .min_keysize = CAMELLIA_MIN_KEY_SIZE,
.decrypt = cbc_decrypt, .max_keysize = CAMELLIA_MAX_KEY_SIZE,
}, .ivsize = CAMELLIA_BLOCK_SIZE,
}, .chunksize = CAMELLIA_BLOCK_SIZE,
}, { .setkey = camellia_setkey_skcipher,
.cra_name = "ctr(camellia)", .encrypt = ctr_crypt,
.cra_driver_name = "ctr-camellia-asm", .decrypt = ctr_crypt,
.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 bool is_blacklisted_cpu(void) 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) static int __init init(void)
{ {
int err;
if (!force && is_blacklisted_cpu()) { if (!force && is_blacklisted_cpu()) {
printk(KERN_INFO printk(KERN_INFO
"camellia-x86_64: performance on this CPU " "camellia-x86_64: performance on this CPU "
@ -1514,12 +1499,23 @@ static int __init init(void)
return -ENODEV; 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) 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); module_init(init);

2
crypto/Kconfig
View file

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