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[v5,21/30] crypto: stm32/des - switch to new verification routines

Message ID 20190815090112.9377-22-ard.biesheuvel@linaro.org
State Accepted
Commit b5d0ba83a0fb09b8dfd8bfdd9072d532da4f3091
Headers show
Series crypto: DES/3DES cleanup | expand

Commit Message

Ard Biesheuvel Aug. 15, 2019, 9:01 a.m. UTC 
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>

---
 drivers/crypto/stm32/stm32-cryp.c | 30 ++++----------------
 1 file changed, 5 insertions(+), 25 deletions(-)

-- 
2.17.1
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Patch

diff --git a/drivers/crypto/stm32/stm32-cryp.c b/drivers/crypto/stm32/stm32-cryp.c
index 5cf6679da580..ba5ea6434f9c 100644
--- a/drivers/crypto/stm32/stm32-cryp.c
+++ b/drivers/crypto/stm32/stm32-cryp.c
@@ -15,7 +15,7 @@ 
 #include <linux/reset.h>
 
 #include <crypto/aes.h>
-#include <crypto/des.h>
+#include <crypto/internal/des.h>
 #include <crypto/engine.h>
 #include <crypto/scatterwalk.h>
 #include <crypto/internal/aead.h>
@@ -767,35 +767,15 @@  static int stm32_cryp_aes_setkey(struct crypto_ablkcipher *tfm, const u8 *key,
 static int stm32_cryp_des_setkey(struct crypto_ablkcipher *tfm, const u8 *key,
 				 unsigned int keylen)
 {
-	u32 tmp[DES_EXPKEY_WORDS];
-
-	if (keylen != DES_KEY_SIZE)
-		return -EINVAL;
-
-	if ((crypto_ablkcipher_get_flags(tfm) &
-	     CRYPTO_TFM_REQ_FORBID_WEAK_KEYS) &&
-	    unlikely(!des_ekey(tmp, key))) {
-		crypto_ablkcipher_set_flags(tfm, CRYPTO_TFM_RES_WEAK_KEY);
-		return -EINVAL;
-	}
-
-	return stm32_cryp_setkey(tfm, key, keylen);
+	return verify_ablkcipher_des_key(tfm, key) ?:
+	       stm32_cryp_setkey(tfm, key, keylen);
 }
 
 static int stm32_cryp_tdes_setkey(struct crypto_ablkcipher *tfm, const u8 *key,
 				  unsigned int keylen)
 {
-	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);
-		return err;
-	}
-
-	return stm32_cryp_setkey(tfm, key, keylen);
+	return verify_ablkcipher_des3_key(tfm, key) ?:
+	       stm32_cryp_setkey(tfm, key, keylen);
 }
 
 static int stm32_cryp_aes_aead_setkey(struct crypto_aead *tfm, const u8 *key,