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From:   Ard Biesheuvel <ard.biesheuvel@linaro.org>
To:     linux-crypto@vger.kernel.org
Cc:     herbert@gondor.apana.org.au, ebiggers@kernel.org,
        horia.geanta@nxp.com, Ard Biesheuvel <ard.biesheuvel@linaro.org>
Subject: [PATCH v3 21/30] crypto: stm32/des - switch to new verification routines
Date:   Fri, 28 Jun 2019 11:35:20 +0200
Message-Id: <20190628093529.12281-22-ard.biesheuvel@linaro.org>
In-Reply-To: <20190628093529.12281-1-ard.biesheuvel@linaro.org>
References: <20190628093529.12281-1-ard.biesheuvel@linaro.org>
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Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
---
 drivers/crypto/stm32/stm32-cryp.c | 30 ++++----------------
 1 file changed, 5 insertions(+), 25 deletions(-)

diff --git a/drivers/crypto/stm32/stm32-cryp.c b/drivers/crypto/stm32/stm32-cryp.c
index cddcc97875b2..377d7f9ad470 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 crypto_des_verify_key(crypto_ablkcipher_tfm(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 crypto_des3_ede_verify_key(crypto_ablkcipher_tfm(tfm), key) ?:
+	       stm32_cryp_setkey(tfm, key, keylen);
 }
 
 static int stm32_cryp_aes_aead_setkey(struct crypto_aead *tfm, const u8 *key,
-- 
2.20.1