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crypto: s390/des - switch to new verification routines

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Switch to the refactored DES key verification routines. While at it,
rename the DES encrypt/decrypt routines so they will not conflict with
the DES library later on.

Reviewed-by: Harald Freudenberger <freude@linux.ibm.com>
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Ard Biesheuvel 2019-08-15 12:00:44 +03:00 committed by Herbert Xu
parent 6ee41e5420
commit 4e2c820897
1 changed files with 11 additions and 14 deletions
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25
arch/s390/crypto/des_s390.c
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@ -16,7 +16,7 @@
#include <linux/fips.h>
#include <linux/mutex.h>
#include <crypto/algapi.h>
#include <crypto/des.h>
#include <crypto/internal/des.h>
#include <asm/cpacf.h>
#define DES3_KEY_SIZE (3 * DES_KEY_SIZE)
@ -35,27 +35,24 @@ static int des_setkey(struct crypto_tfm *tfm, const u8 *key,
unsigned int key_len)
{
struct s390_des_ctx *ctx = crypto_tfm_ctx(tfm);
u32 tmp[DES_EXPKEY_WORDS];
int err;
/* check for weak keys */
if (!des_ekey(tmp, key) &&
(tfm->crt_flags & CRYPTO_TFM_REQ_FORBID_WEAK_KEYS)) {
tfm->crt_flags |= CRYPTO_TFM_RES_WEAK_KEY;
return -EINVAL;
}
err = crypto_des_verify_key(tfm, key);
if (err)
return err;
memcpy(ctx->key, key, key_len);
return 0;
}
static void des_encrypt(struct crypto_tfm *tfm, u8 *out, const u8 *in)
static void s390_des_encrypt(struct crypto_tfm *tfm, u8 *out, const u8 *in)
{
struct s390_des_ctx *ctx = crypto_tfm_ctx(tfm);
cpacf_km(CPACF_KM_DEA, ctx->key, out, in, DES_BLOCK_SIZE);
}
static void des_decrypt(struct crypto_tfm *tfm, u8 *out, const u8 *in)
static void s390_des_decrypt(struct crypto_tfm *tfm, u8 *out, const u8 *in)
{
struct s390_des_ctx *ctx = crypto_tfm_ctx(tfm);
@ -76,8 +73,8 @@ static struct crypto_alg des_alg = {
.cia_min_keysize = DES_KEY_SIZE,
.cia_max_keysize = DES_KEY_SIZE,
.cia_setkey = des_setkey,
.cia_encrypt = des_encrypt,
.cia_decrypt = des_decrypt,
.cia_encrypt = s390_des_encrypt,
.cia_decrypt = s390_des_decrypt,
}
}
};
@ -227,8 +224,8 @@ static int des3_setkey(struct crypto_tfm *tfm, const u8 *key,
struct s390_des_ctx *ctx = crypto_tfm_ctx(tfm);
int err;
err = __des3_verify_key(&tfm->crt_flags, key);
if (unlikely(err))
err = crypto_des3_ede_verify_key(tfm, key);
if (err)
return err;
memcpy(ctx->key, key, key_len);