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[v2,02/30] crypto: s390/des - switch to new verification routines

Message ID 20190627120314.7197-3-ard.biesheuvel@linaro.org
State Superseded
Headers show
Series crypto: DES/3DES cleanup | expand

Commit Message

Ard Biesheuvel June 27, 2019, 12:02 p.m. UTC 
Acked-by: Harald Freudenberger <freude@linux.ibm.com>

Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>

---
 arch/s390/crypto/des_s390.c | 23 +++++++++-----------
 1 file changed, 10 insertions(+), 13 deletions(-)

-- 
2.20.1
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Patch

diff --git a/arch/s390/crypto/des_s390.c b/arch/s390/crypto/des_s390.c
index 1f9ab24dc048..99edfb4907b5 100644
--- a/arch/s390/crypto/des_s390.c
+++ b/arch/s390/crypto/des_s390.c
@@ -15,7 +15,7 @@ 
 #include <linux/crypto.h>
 #include <linux/fips.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)
@@ -34,27 +34,24 @@  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 (unlikely(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 crypto_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 crypto_des_decrypt(struct crypto_tfm *tfm, u8 *out, const u8 *in)
 {
 	struct s390_des_ctx *ctx = crypto_tfm_ctx(tfm);
 
@@ -75,8 +72,8 @@  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		=	crypto_des_encrypt,
+			.cia_decrypt		=	crypto_des_decrypt,
 		}
 	}
 };
@@ -226,7 +223,7 @@  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);
+	err = crypto_des3_ede_verify_key(tfm, key);
 	if (unlikely(err))
 		return err;