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crypto: s390 - cleanup DES code

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Remove a stale file left over from 1efbd15c3b
and and cleanup the DES code a bit to make it easier to add new code.

Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Jan Glauber
2011-04-19 21:29:15 +02:00
committed by Herbert Xu
parent 1822bc9093
commit 98971f8439
2 changed files with 96 additions and 235 deletions
Download Patch File Download Diff File Expand all files Collapse all files

199
arch/s390/crypto/des_s390.c
View File

@@ -22,22 +22,17 @@
#include "crypt_s390.h"
#define DES3_192_KEY_SIZE (3 * DES_KEY_SIZE)
#define DES3_KEY_SIZE (3 * DES_KEY_SIZE)
struct crypt_s390_des_ctx {
struct s390_des_ctx {
u8 iv[DES_BLOCK_SIZE];
u8 key[DES_KEY_SIZE];
};
struct crypt_s390_des3_192_ctx {
u8 iv[DES_BLOCK_SIZE];
u8 key[DES3_192_KEY_SIZE];
u8 key[DES3_KEY_SIZE];
};
static int des_setkey(struct crypto_tfm *tfm, const u8 *key,
unsigned int keylen)
unsigned int key_len)
{
struct crypt_s390_des_ctx *dctx = crypto_tfm_ctx(tfm);
struct s390_des_ctx *ctx = crypto_tfm_ctx(tfm);
u32 *flags = &tfm->crt_flags;
u32 tmp[DES_EXPKEY_WORDS];
@@ -47,22 +42,22 @@ static int des_setkey(struct crypto_tfm *tfm, const u8 *key,
return -EINVAL;
}
memcpy(dctx->key, key, keylen);
memcpy(ctx->key, key, key_len);
return 0;
}
static void des_encrypt(struct crypto_tfm *tfm, u8 *out, const u8 *in)
{
struct crypt_s390_des_ctx *dctx = crypto_tfm_ctx(tfm);
struct s390_des_ctx *ctx = crypto_tfm_ctx(tfm);
crypt_s390_km(KM_DEA_ENCRYPT, dctx->key, out, in, DES_BLOCK_SIZE);
crypt_s390_km(KM_DEA_ENCRYPT, ctx->key, out, in, DES_BLOCK_SIZE);
}
static void des_decrypt(struct crypto_tfm *tfm, u8 *out, const u8 *in)
{
struct crypt_s390_des_ctx *dctx = crypto_tfm_ctx(tfm);
struct s390_des_ctx *ctx = crypto_tfm_ctx(tfm);
crypt_s390_km(KM_DEA_DECRYPT, dctx->key, out, in, DES_BLOCK_SIZE);
crypt_s390_km(KM_DEA_DECRYPT, ctx->key, out, in, DES_BLOCK_SIZE);
}
static struct crypto_alg des_alg = {
@@ -71,7 +66,7 @@ static struct crypto_alg des_alg = {
.cra_priority = CRYPT_S390_PRIORITY,
.cra_flags = CRYPTO_ALG_TYPE_CIPHER,
.cra_blocksize = DES_BLOCK_SIZE,
.cra_ctxsize = sizeof(struct crypt_s390_des_ctx),
.cra_ctxsize = sizeof(struct s390_des_ctx),
.cra_module = THIS_MODULE,
.cra_list = LIST_HEAD_INIT(des_alg.cra_list),
.cra_u = {
@@ -86,7 +81,7 @@ static struct crypto_alg des_alg = {
};
static int ecb_desall_crypt(struct blkcipher_desc *desc, long func,
void *param, struct blkcipher_walk *walk)
u8 *key, struct blkcipher_walk *walk)
{
int ret = blkcipher_walk_virt(desc, walk);
unsigned int nbytes;
@@ -97,7 +92,7 @@ static int ecb_desall_crypt(struct blkcipher_desc *desc, long func,
u8 *out = walk->dst.virt.addr;
u8 *in = walk->src.virt.addr;
ret = crypt_s390_km(func, param, out, in, n);
ret = crypt_s390_km(func, key, out, in, n);
BUG_ON((ret < 0) || (ret != n));
nbytes &= DES_BLOCK_SIZE - 1;
@@ -108,7 +103,7 @@ static int ecb_desall_crypt(struct blkcipher_desc *desc, long func,
}
static int cbc_desall_crypt(struct blkcipher_desc *desc, long func,
void *param, struct blkcipher_walk *walk)
u8 *iv, struct blkcipher_walk *walk)
{
int ret = blkcipher_walk_virt(desc, walk);
unsigned int nbytes = walk->nbytes;
@@ -116,20 +111,20 @@ static int cbc_desall_crypt(struct blkcipher_desc *desc, long func,
if (!nbytes)
goto out;
memcpy(param, walk->iv, DES_BLOCK_SIZE);
memcpy(iv, walk->iv, DES_BLOCK_SIZE);
do {
/* only use complete blocks */
unsigned int n = nbytes & ~(DES_BLOCK_SIZE - 1);
u8 *out = walk->dst.virt.addr;
u8 *in = walk->src.virt.addr;
ret = crypt_s390_kmc(func, param, out, in, n);
ret = crypt_s390_kmc(func, iv, out, in, n);
BUG_ON((ret < 0) || (ret != n));
nbytes &= DES_BLOCK_SIZE - 1;
ret = blkcipher_walk_done(desc, walk, nbytes);
} while ((nbytes = walk->nbytes));
memcpy(walk->iv, param, DES_BLOCK_SIZE);
memcpy(walk->iv, iv, DES_BLOCK_SIZE);
out:
return ret;
@@ -139,22 +134,22 @@ static int ecb_des_encrypt(struct blkcipher_desc *desc,
struct scatterlist *dst, struct scatterlist *src,
unsigned int nbytes)
{
struct crypt_s390_des_ctx *sctx = crypto_blkcipher_ctx(desc->tfm);
struct s390_des_ctx *ctx = crypto_blkcipher_ctx(desc->tfm);
struct blkcipher_walk walk;
blkcipher_walk_init(&walk, dst, src, nbytes);
return ecb_desall_crypt(desc, KM_DEA_ENCRYPT, sctx->key, &walk);
return ecb_desall_crypt(desc, KM_DEA_ENCRYPT, ctx->key, &walk);
}
static int ecb_des_decrypt(struct blkcipher_desc *desc,
struct scatterlist *dst, struct scatterlist *src,
unsigned int nbytes)
{
struct crypt_s390_des_ctx *sctx = crypto_blkcipher_ctx(desc->tfm);
struct s390_des_ctx *ctx = crypto_blkcipher_ctx(desc->tfm);
struct blkcipher_walk walk;
blkcipher_walk_init(&walk, dst, src, nbytes);
return ecb_desall_crypt(desc, KM_DEA_DECRYPT, sctx->key, &walk);
return ecb_desall_crypt(desc, KM_DEA_DECRYPT, ctx->key, &walk);
}
static struct crypto_alg ecb_des_alg = {
@@ -163,7 +158,7 @@ static struct crypto_alg ecb_des_alg = {
.cra_priority = CRYPT_S390_COMPOSITE_PRIORITY,
.cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER,
.cra_blocksize = DES_BLOCK_SIZE,
.cra_ctxsize = sizeof(struct crypt_s390_des_ctx),
.cra_ctxsize = sizeof(struct s390_des_ctx),
.cra_type = &crypto_blkcipher_type,
.cra_module = THIS_MODULE,
.cra_list = LIST_HEAD_INIT(ecb_des_alg.cra_list),
@@ -182,22 +177,22 @@ static int cbc_des_encrypt(struct blkcipher_desc *desc,
struct scatterlist *dst, struct scatterlist *src,
unsigned int nbytes)
{
struct crypt_s390_des_ctx *sctx = crypto_blkcipher_ctx(desc->tfm);
struct s390_des_ctx *ctx = crypto_blkcipher_ctx(desc->tfm);
struct blkcipher_walk walk;
blkcipher_walk_init(&walk, dst, src, nbytes);
return cbc_desall_crypt(desc, KMC_DEA_ENCRYPT, sctx->iv, &walk);
return cbc_desall_crypt(desc, KMC_DEA_ENCRYPT, ctx->iv, &walk);
}
static int cbc_des_decrypt(struct blkcipher_desc *desc,
struct scatterlist *dst, struct scatterlist *src,
unsigned int nbytes)
{
struct crypt_s390_des_ctx *sctx = crypto_blkcipher_ctx(desc->tfm);
struct s390_des_ctx *ctx = crypto_blkcipher_ctx(desc->tfm);
struct blkcipher_walk walk;
blkcipher_walk_init(&walk, dst, src, nbytes);
return cbc_desall_crypt(desc, KMC_DEA_DECRYPT, sctx->iv, &walk);
return cbc_desall_crypt(desc, KMC_DEA_DECRYPT, ctx->iv, &walk);
}
static struct crypto_alg cbc_des_alg = {
@@ -206,7 +201,7 @@ static struct crypto_alg cbc_des_alg = {
.cra_priority = CRYPT_S390_COMPOSITE_PRIORITY,
.cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER,
.cra_blocksize = DES_BLOCK_SIZE,
.cra_ctxsize = sizeof(struct crypt_s390_des_ctx),
.cra_ctxsize = sizeof(struct s390_des_ctx),
.cra_type = &crypto_blkcipher_type,
.cra_module = THIS_MODULE,
.cra_list = LIST_HEAD_INIT(cbc_des_alg.cra_list),
@@ -235,10 +230,10 @@ static struct crypto_alg cbc_des_alg = {
* property.
*
*/
static int des3_192_setkey(struct crypto_tfm *tfm, const u8 *key,
unsigned int keylen)
static int des3_setkey(struct crypto_tfm *tfm, const u8 *key,
unsigned int key_len)
{
struct crypt_s390_des3_192_ctx *dctx = crypto_tfm_ctx(tfm);
struct s390_des_ctx *ctx = crypto_tfm_ctx(tfm);
u32 *flags = &tfm->crt_flags;
if (!(memcmp(key, &key[DES_KEY_SIZE], DES_KEY_SIZE) &&
@@ -248,136 +243,134 @@ static int des3_192_setkey(struct crypto_tfm *tfm, const u8 *key,
*flags |= CRYPTO_TFM_RES_WEAK_KEY;
return -EINVAL;
}
memcpy(dctx->key, key, keylen);
memcpy(ctx->key, key, key_len);
return 0;
}
static void des3_192_encrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src)
static void des3_encrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src)
{
struct crypt_s390_des3_192_ctx *dctx = crypto_tfm_ctx(tfm);
struct s390_des_ctx *ctx = crypto_tfm_ctx(tfm);
crypt_s390_km(KM_TDEA_192_ENCRYPT, dctx->key, dst, (void*)src,
DES_BLOCK_SIZE);
crypt_s390_km(KM_TDEA_192_ENCRYPT, ctx->key, dst, src, DES_BLOCK_SIZE);
}
static void des3_192_decrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src)
static void des3_decrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src)
{
struct crypt_s390_des3_192_ctx *dctx = crypto_tfm_ctx(tfm);
struct s390_des_ctx *ctx = crypto_tfm_ctx(tfm);
crypt_s390_km(KM_TDEA_192_DECRYPT, dctx->key, dst, (void*)src,
DES_BLOCK_SIZE);
crypt_s390_km(KM_TDEA_192_DECRYPT, ctx->key, dst, src, DES_BLOCK_SIZE);
}
static struct crypto_alg des3_192_alg = {
static struct crypto_alg des3_alg = {
.cra_name = "des3_ede",
.cra_driver_name = "des3_ede-s390",
.cra_priority = CRYPT_S390_PRIORITY,
.cra_flags = CRYPTO_ALG_TYPE_CIPHER,
.cra_blocksize = DES_BLOCK_SIZE,
.cra_ctxsize = sizeof(struct crypt_s390_des3_192_ctx),
.cra_ctxsize = sizeof(struct s390_des_ctx),
.cra_module = THIS_MODULE,
.cra_list = LIST_HEAD_INIT(des3_192_alg.cra_list),
.cra_list = LIST_HEAD_INIT(des3_alg.cra_list),
.cra_u = {
.cipher = {
.cia_min_keysize = DES3_192_KEY_SIZE,
.cia_max_keysize = DES3_192_KEY_SIZE,
.cia_setkey = des3_192_setkey,
.cia_encrypt = des3_192_encrypt,
.cia_decrypt = des3_192_decrypt,
.cia_min_keysize = DES3_KEY_SIZE,
.cia_max_keysize = DES3_KEY_SIZE,
.cia_setkey = des3_setkey,
.cia_encrypt = des3_encrypt,
.cia_decrypt = des3_decrypt,
}
}
};
static int ecb_des3_192_encrypt(struct blkcipher_desc *desc,
struct scatterlist *dst,
struct scatterlist *src, unsigned int nbytes)
static int ecb_des3_encrypt(struct blkcipher_desc *desc,
struct scatterlist *dst, struct scatterlist *src,
unsigned int nbytes)
{
struct crypt_s390_des3_192_ctx *sctx = crypto_blkcipher_ctx(desc->tfm);
struct s390_des_ctx *ctx = crypto_blkcipher_ctx(desc->tfm);
struct blkcipher_walk walk;
blkcipher_walk_init(&walk, dst, src, nbytes);
return ecb_desall_crypt(desc, KM_TDEA_192_ENCRYPT, sctx->key, &walk);
return ecb_desall_crypt(desc, KM_TDEA_192_ENCRYPT, ctx->key, &walk);
}
static int ecb_des3_192_decrypt(struct blkcipher_desc *desc,
struct scatterlist *dst,
struct scatterlist *src, unsigned int nbytes)
static int ecb_des3_decrypt(struct blkcipher_desc *desc,
struct scatterlist *dst, struct scatterlist *src,
unsigned int nbytes)
{
struct crypt_s390_des3_192_ctx *sctx = crypto_blkcipher_ctx(desc->tfm);
struct s390_des_ctx *ctx = crypto_blkcipher_ctx(desc->tfm);
struct blkcipher_walk walk;
blkcipher_walk_init(&walk, dst, src, nbytes);
return ecb_desall_crypt(desc, KM_TDEA_192_DECRYPT, sctx->key, &walk);
return ecb_desall_crypt(desc, KM_TDEA_192_DECRYPT, ctx->key, &walk);
}
static struct crypto_alg ecb_des3_192_alg = {
static struct crypto_alg ecb_des3_alg = {
.cra_name = "ecb(des3_ede)",
.cra_driver_name = "ecb-des3_ede-s390",
.cra_priority = CRYPT_S390_COMPOSITE_PRIORITY,
.cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER,
.cra_blocksize = DES_BLOCK_SIZE,
.cra_ctxsize = sizeof(struct crypt_s390_des3_192_ctx),
.cra_ctxsize = sizeof(struct s390_des_ctx),
.cra_type = &crypto_blkcipher_type,
.cra_module = THIS_MODULE,
.cra_list = LIST_HEAD_INIT(
ecb_des3_192_alg.cra_list),
ecb_des3_alg.cra_list),
.cra_u = {
.blkcipher = {
.min_keysize = DES3_192_KEY_SIZE,
.max_keysize = DES3_192_KEY_SIZE,
.setkey = des3_192_setkey,
.encrypt = ecb_des3_192_encrypt,
.decrypt = ecb_des3_192_decrypt,
.min_keysize = DES3_KEY_SIZE,
.max_keysize = DES3_KEY_SIZE,
.setkey = des3_setkey,
.encrypt = ecb_des3_encrypt,
.decrypt = ecb_des3_decrypt,
}
}
};
static int cbc_des3_192_encrypt(struct blkcipher_desc *desc,
struct scatterlist *dst,
struct scatterlist *src, unsigned int nbytes)
static int cbc_des3_encrypt(struct blkcipher_desc *desc,
struct scatterlist *dst, struct scatterlist *src,
unsigned int nbytes)
{
struct crypt_s390_des3_192_ctx *sctx = crypto_blkcipher_ctx(desc->tfm);
struct s390_des_ctx *ctx = crypto_blkcipher_ctx(desc->tfm);
struct blkcipher_walk walk;
blkcipher_walk_init(&walk, dst, src, nbytes);
return cbc_desall_crypt(desc, KMC_TDEA_192_ENCRYPT, sctx->iv, &walk);
return cbc_desall_crypt(desc, KMC_TDEA_192_ENCRYPT, ctx->iv, &walk);
}
static int cbc_des3_192_decrypt(struct blkcipher_desc *desc,
struct scatterlist *dst,
struct scatterlist *src, unsigned int nbytes)
static int cbc_des3_decrypt(struct blkcipher_desc *desc,
struct scatterlist *dst, struct scatterlist *src,
unsigned int nbytes)
{
struct crypt_s390_des3_192_ctx *sctx = crypto_blkcipher_ctx(desc->tfm);
struct s390_des_ctx *ctx = crypto_blkcipher_ctx(desc->tfm);
struct blkcipher_walk walk;
blkcipher_walk_init(&walk, dst, src, nbytes);
return cbc_desall_crypt(desc, KMC_TDEA_192_DECRYPT, sctx->iv, &walk);
return cbc_desall_crypt(desc, KMC_TDEA_192_DECRYPT, ctx->iv, &walk);
}
static struct crypto_alg cbc_des3_192_alg = {
static struct crypto_alg cbc_des3_alg = {
.cra_name = "cbc(des3_ede)",
.cra_driver_name = "cbc-des3_ede-s390",
.cra_priority = CRYPT_S390_COMPOSITE_PRIORITY,
.cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER,
.cra_blocksize = DES_BLOCK_SIZE,
.cra_ctxsize = sizeof(struct crypt_s390_des3_192_ctx),
.cra_ctxsize = sizeof(struct s390_des_ctx),
.cra_type = &crypto_blkcipher_type,
.cra_module = THIS_MODULE,
.cra_list = LIST_HEAD_INIT(
cbc_des3_192_alg.cra_list),
cbc_des3_alg.cra_list),
.cra_u = {
.blkcipher = {
.min_keysize = DES3_192_KEY_SIZE,
.max_keysize = DES3_192_KEY_SIZE,
.min_keysize = DES3_KEY_SIZE,
.max_keysize = DES3_KEY_SIZE,
.ivsize = DES_BLOCK_SIZE,
.setkey = des3_192_setkey,
.encrypt = cbc_des3_192_encrypt,
.decrypt = cbc_des3_192_decrypt,
.setkey = des3_setkey,
.encrypt = cbc_des3_encrypt,
.decrypt = cbc_des3_decrypt,
}
}
};
static int des_s390_init(void)
static int __init des_s390_init(void)
{
int ret;
@@ -394,23 +387,23 @@ static int des_s390_init(void)
ret = crypto_register_alg(&cbc_des_alg);
if (ret)
goto cbc_des_err;
ret = crypto_register_alg(&des3_192_alg);
ret = crypto_register_alg(&des3_alg);
if (ret)
goto des3_192_err;
ret = crypto_register_alg(&ecb_des3_192_alg);
goto des3_err;
ret = crypto_register_alg(&ecb_des3_alg);
if (ret)
goto ecb_des3_192_err;
ret = crypto_register_alg(&cbc_des3_192_alg);
goto ecb_des3_err;
ret = crypto_register_alg(&cbc_des3_alg);
if (ret)
goto cbc_des3_192_err;
goto cbc_des3_err;
out:
return ret;
cbc_des3_192_err:
crypto_unregister_alg(&ecb_des3_192_alg);
ecb_des3_192_err:
crypto_unregister_alg(&des3_192_alg);
des3_192_err:
cbc_des3_err:
crypto_unregister_alg(&ecb_des3_alg);
ecb_des3_err:
crypto_unregister_alg(&des3_alg);
des3_err:
crypto_unregister_alg(&cbc_des_alg);
cbc_des_err:
crypto_unregister_alg(&ecb_des_alg);
@@ -422,9 +415,9 @@ des_err:
static void __exit des_s390_exit(void)
{
crypto_unregister_alg(&cbc_des3_192_alg);
crypto_unregister_alg(&ecb_des3_192_alg);
crypto_unregister_alg(&des3_192_alg);
crypto_unregister_alg(&cbc_des3_alg);
crypto_unregister_alg(&ecb_des3_alg);
crypto_unregister_alg(&des3_alg);
crypto_unregister_alg(&cbc_des_alg);
crypto_unregister_alg(&ecb_des_alg);
crypto_unregister_alg(&des_alg);