diff mbox series

[v4,04/30] crypto: atmel/des - switch to new verification routines

Message ID 20190805170037.31330-5-ard.biesheuvel@linaro.org
State Changes Requested
Delegated to: Herbert Xu
Headers show
Series crypto: DES/3DES cleanup | expand

Commit Message

Ard Biesheuvel Aug. 5, 2019, 5 p.m. UTC
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
---
 drivers/crypto/atmel-tdes.c | 28 +++++---------------
 1 file changed, 7 insertions(+), 21 deletions(-)
diff mbox series

Patch

diff --git a/drivers/crypto/atmel-tdes.c b/drivers/crypto/atmel-tdes.c
index fa76620281e8..4e1d9ca3a347 100644
--- a/drivers/crypto/atmel-tdes.c
+++ b/drivers/crypto/atmel-tdes.c
@@ -33,7 +33,7 @@ 
 #include <linux/cryptohash.h>
 #include <crypto/scatterwalk.h>
 #include <crypto/algapi.h>
-#include <crypto/des.h>
+#include <crypto/internal/des.h>
 #include <crypto/hash.h>
 #include <crypto/internal/hash.h>
 #include <linux/platform_data/crypto-atmel.h>
@@ -773,22 +773,12 @@  static void atmel_tdes_dma_cleanup(struct atmel_tdes_dev *dd)
 static int atmel_des_setkey(struct crypto_ablkcipher *tfm, const u8 *key,
 			   unsigned int keylen)
 {
-	u32 tmp[DES_EXPKEY_WORDS];
-	int err;
-	struct crypto_tfm *ctfm = crypto_ablkcipher_tfm(tfm);
-
 	struct atmel_tdes_ctx *ctx = crypto_ablkcipher_ctx(tfm);
+	int err;
 
-	if (keylen != DES_KEY_SIZE) {
-		crypto_ablkcipher_set_flags(tfm, CRYPTO_TFM_RES_BAD_KEY_LEN);
-		return -EINVAL;
-	}
-
-	err = des_ekey(tmp, key);
-	if (err == 0 && (ctfm->crt_flags & CRYPTO_TFM_REQ_FORBID_WEAK_KEYS)) {
-		ctfm->crt_flags |= CRYPTO_TFM_RES_WEAK_KEY;
-		return -EINVAL;
-	}
+	err = crypto_des_verify_key(crypto_ablkcipher_tfm(tfm), key);
+	if (err)
+		return err;
 
 	memcpy(ctx->key, key, keylen);
 	ctx->keylen = keylen;
@@ -800,15 +790,11 @@  static int atmel_tdes_setkey(struct crypto_ablkcipher *tfm, const u8 *key,
 			   unsigned int keylen)
 {
 	struct atmel_tdes_ctx *ctx = crypto_ablkcipher_ctx(tfm);
-	u32 flags;
 	int err;
 
-	flags = crypto_ablkcipher_get_flags(tfm);
-	err = __des3_verify_key(&flags, key);
-	if (unlikely(err)) {
-		crypto_ablkcipher_set_flags(tfm, flags);
+	err = crypto_des3_ede_verify_key(crypto_ablkcipher_tfm(tfm), key);
+	if (err)
 		return err;
-	}
 
 	memcpy(ctx->key, key, keylen);
 	ctx->keylen = keylen;