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From: Ard Biesheuvel <ard.biesheuvel@linaro.org>
To: linux-crypto@vger.kernel.org
Cc: herbert@gondor.apana.org.au,
	Ard Biesheuvel <ard.biesheuvel@linaro.org>,
	Horia Geanta <horia.geanta@nxp.com>
Subject: [PATCH v5 06/30] crypto: caam/des - switch to new verification routines
Date: Thu, 15 Aug 2019 12:00:48 +0300	[thread overview]
Message-ID: <20190815090112.9377-7-ard.biesheuvel@linaro.org> (raw)
In-Reply-To: <20190815090112.9377-1-ard.biesheuvel@linaro.org>

Cc: Horia Geanta <horia.geanta@nxp.com>
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
---
 drivers/crypto/caam/caamalg.c     | 49 ++++++--------------
 drivers/crypto/caam/caamalg_qi.c  | 36 +++-----------
 drivers/crypto/caam/caamalg_qi2.c | 36 +++++---------
 drivers/crypto/caam/compat.h      |  2 +-
 4 files changed, 31 insertions(+), 92 deletions(-)

diff --git a/drivers/crypto/caam/caamalg.c b/drivers/crypto/caam/caamalg.c
index 947ba8ef487a..3e2662cda9fd 100644
--- a/drivers/crypto/caam/caamalg.c
+++ b/drivers/crypto/caam/caamalg.c
@@ -628,33 +628,17 @@ static int des3_aead_setkey(struct crypto_aead *aead, const u8 *key,
 			    unsigned int keylen)
 {
 	struct crypto_authenc_keys keys;
-	u32 flags;
 	int err;
 
 	err = crypto_authenc_extractkeys(&keys, key, keylen);
 	if (unlikely(err))
-		goto badkey;
-
-	err = -EINVAL;
-	if (keys.enckeylen != DES3_EDE_KEY_SIZE)
-		goto badkey;
-
-	flags = crypto_aead_get_flags(aead);
-	err = __des3_verify_key(&flags, keys.enckey);
-	if (unlikely(err)) {
-		crypto_aead_set_flags(aead, flags);
-		goto out;
-	}
+		return err;
 
-	err = aead_setkey(aead, key, keylen);
+	err = verify_aead_des3_key(aead, keys.enckey, keys.enckeylen) ?:
+	      aead_setkey(aead, key, keylen);
 
-out:
 	memzero_explicit(&keys, sizeof(keys));
 	return err;
-
-badkey:
-	crypto_aead_set_flags(aead, CRYPTO_TFM_RES_BAD_KEY_LEN);
-	goto out;
 }
 
 static int gcm_setkey(struct crypto_aead *aead,
@@ -843,22 +827,15 @@ static int arc4_skcipher_setkey(struct crypto_skcipher *skcipher,
 static int des_skcipher_setkey(struct crypto_skcipher *skcipher,
 			       const u8 *key, unsigned int keylen)
 {
-	u32 tmp[DES3_EDE_EXPKEY_WORDS];
-	struct crypto_tfm *tfm = crypto_skcipher_tfm(skcipher);
-
-	if (keylen == DES3_EDE_KEY_SIZE &&
-	    __des3_ede_setkey(tmp, &tfm->crt_flags, key, DES3_EDE_KEY_SIZE)) {
-		return -EINVAL;
-	}
-
-	if (!des_ekey(tmp, key) && (crypto_skcipher_get_flags(skcipher) &
-	    CRYPTO_TFM_REQ_FORBID_WEAK_KEYS)) {
-		crypto_skcipher_set_flags(skcipher,
-					  CRYPTO_TFM_RES_WEAK_KEY);
-		return -EINVAL;
-	}
+	return verify_skcipher_des_key(skcipher, key) ?:
+	       skcipher_setkey(skcipher, key, keylen, 0);
+}
 
-	return skcipher_setkey(skcipher, key, keylen, 0);
+static int des3_skcipher_setkey(struct crypto_skcipher *skcipher,
+				const u8 *key, unsigned int keylen)
+{
+	return verify_skcipher_des3_key(skcipher, key) ?:
+	       skcipher_setkey(skcipher, key, keylen, 0);
 }
 
 static int xts_skcipher_setkey(struct crypto_skcipher *skcipher, const u8 *key,
@@ -1954,7 +1931,7 @@ static struct caam_skcipher_alg driver_algs[] = {
 				.cra_driver_name = "cbc-3des-caam",
 				.cra_blocksize = DES3_EDE_BLOCK_SIZE,
 			},
-			.setkey = des_skcipher_setkey,
+			.setkey = des3_skcipher_setkey,
 			.encrypt = skcipher_encrypt,
 			.decrypt = skcipher_decrypt,
 			.min_keysize = DES3_EDE_KEY_SIZE,
@@ -2073,7 +2050,7 @@ static struct caam_skcipher_alg driver_algs[] = {
 				.cra_driver_name = "ecb-des3-caam",
 				.cra_blocksize = DES3_EDE_BLOCK_SIZE,
 			},
-			.setkey = des_skcipher_setkey,
+			.setkey = des3_skcipher_setkey,
 			.encrypt = skcipher_encrypt,
 			.decrypt = skcipher_decrypt,
 			.min_keysize = DES3_EDE_KEY_SIZE,
diff --git a/drivers/crypto/caam/caamalg_qi.c b/drivers/crypto/caam/caamalg_qi.c
index 59b59f5e9550..23dfdbc1d30f 100644
--- a/drivers/crypto/caam/caamalg_qi.c
+++ b/drivers/crypto/caam/caamalg_qi.c
@@ -278,33 +278,17 @@ static int des3_aead_setkey(struct crypto_aead *aead, const u8 *key,
 			    unsigned int keylen)
 {
 	struct crypto_authenc_keys keys;
-	u32 flags;
 	int err;
 
 	err = crypto_authenc_extractkeys(&keys, key, keylen);
 	if (unlikely(err))
-		goto badkey;
-
-	err = -EINVAL;
-	if (keys.enckeylen != DES3_EDE_KEY_SIZE)
-		goto badkey;
-
-	flags = crypto_aead_get_flags(aead);
-	err = __des3_verify_key(&flags, keys.enckey);
-	if (unlikely(err)) {
-		crypto_aead_set_flags(aead, flags);
-		goto out;
-	}
+		return err;
 
-	err = aead_setkey(aead, key, keylen);
+	err = verify_aead_des3_key(aead, keys.enckey, keys.enckeylen) ?:
+	      aead_setkey(aead, key, keylen);
 
-out:
 	memzero_explicit(&keys, sizeof(keys));
 	return err;
-
-badkey:
-	crypto_aead_set_flags(aead, CRYPTO_TFM_RES_BAD_KEY_LEN);
-	goto out;
 }
 
 static int gcm_set_sh_desc(struct crypto_aead *aead)
@@ -745,23 +729,15 @@ static int ctr_skcipher_setkey(struct crypto_skcipher *skcipher,
 static int des3_skcipher_setkey(struct crypto_skcipher *skcipher,
 				const u8 *key, unsigned int keylen)
 {
-	return unlikely(des3_verify_key(skcipher, key)) ?:
+	return verify_skcipher_des3_key(skcipher, key) ?:
 	       skcipher_setkey(skcipher, key, keylen, 0);
 }
 
 static int des_skcipher_setkey(struct crypto_skcipher *skcipher,
 			       const u8 *key, unsigned int keylen)
 {
-	u32 tmp[DES_EXPKEY_WORDS];
-
-	if (!des_ekey(tmp, key) && (crypto_skcipher_get_flags(skcipher) &
-	    CRYPTO_TFM_REQ_FORBID_WEAK_KEYS)) {
-		crypto_skcipher_set_flags(skcipher,
-					  CRYPTO_TFM_RES_WEAK_KEY);
-		return -EINVAL;
-	}
-
-	return skcipher_setkey(skcipher, key, keylen, 0);
+	return verify_skcipher_des_key(skcipher, key) ?:
+	       skcipher_setkey(skcipher, key, keylen, 0);
 }
 
 static int xts_skcipher_setkey(struct crypto_skcipher *skcipher, const u8 *key,
diff --git a/drivers/crypto/caam/caamalg_qi2.c b/drivers/crypto/caam/caamalg_qi2.c
index bd01bcd799e8..3443f6d6dd83 100644
--- a/drivers/crypto/caam/caamalg_qi2.c
+++ b/drivers/crypto/caam/caamalg_qi2.c
@@ -322,7 +322,6 @@ static int des3_aead_setkey(struct crypto_aead *aead, const u8 *key,
 			    unsigned int keylen)
 {
 	struct crypto_authenc_keys keys;
-	u32 flags;
 	int err;
 
 	err = crypto_authenc_extractkeys(&keys, key, keylen);
@@ -333,14 +332,8 @@ static int des3_aead_setkey(struct crypto_aead *aead, const u8 *key,
 	if (keys.enckeylen != DES3_EDE_KEY_SIZE)
 		goto badkey;
 
-	flags = crypto_aead_get_flags(aead);
-	err = __des3_verify_key(&flags, keys.enckey);
-	if (unlikely(err)) {
-		crypto_aead_set_flags(aead, flags);
-		goto out;
-	}
-
-	err = aead_setkey(aead, key, keylen);
+	err = crypto_des3_ede_verify_key(crypto_aead_tfm(aead), keys.enckey) ?:
+	      aead_setkey(aead, key, keylen);
 
 out:
 	memzero_explicit(&keys, sizeof(keys));
@@ -1070,22 +1063,15 @@ static int chacha20_skcipher_setkey(struct crypto_skcipher *skcipher,
 static int des_skcipher_setkey(struct crypto_skcipher *skcipher,
 			       const u8 *key, unsigned int keylen)
 {
-	u32 tmp[DES3_EDE_EXPKEY_WORDS];
-	struct crypto_tfm *tfm = crypto_skcipher_tfm(skcipher);
-
-	if (keylen == DES3_EDE_KEY_SIZE &&
-	    __des3_ede_setkey(tmp, &tfm->crt_flags, key, DES3_EDE_KEY_SIZE)) {
-		return -EINVAL;
-	}
-
-	if (!des_ekey(tmp, key) && (crypto_skcipher_get_flags(skcipher) &
-	    CRYPTO_TFM_REQ_FORBID_WEAK_KEYS)) {
-		crypto_skcipher_set_flags(skcipher,
-					  CRYPTO_TFM_RES_WEAK_KEY);
-		return -EINVAL;
-	}
+	return verify_skcipher_des_key(skcipher, key) ?:
+	       skcipher_setkey(skcipher, key, keylen, 0);
+}
 
-	return skcipher_setkey(skcipher, key, keylen, 0);
+static int des3_skcipher_setkey(struct crypto_skcipher *skcipher,
+			        const u8 *key, unsigned int keylen)
+{
+	return verify_skcipher_des3_key(skcipher, key) ?:
+	       skcipher_setkey(skcipher, key, keylen, 0);
 }
 
 static int xts_skcipher_setkey(struct crypto_skcipher *skcipher, const u8 *key,
@@ -1634,7 +1620,7 @@ static struct caam_skcipher_alg driver_algs[] = {
 				.cra_driver_name = "cbc-3des-caam-qi2",
 				.cra_blocksize = DES3_EDE_BLOCK_SIZE,
 			},
-			.setkey = des_skcipher_setkey,
+			.setkey = des3_skcipher_setkey,
 			.encrypt = skcipher_encrypt,
 			.decrypt = skcipher_decrypt,
 			.min_keysize = DES3_EDE_KEY_SIZE,
diff --git a/drivers/crypto/caam/compat.h b/drivers/crypto/caam/compat.h
index 8639b2df0371..60e2a54c19f1 100644
--- a/drivers/crypto/caam/compat.h
+++ b/drivers/crypto/caam/compat.h
@@ -32,7 +32,7 @@
 #include <crypto/null.h>
 #include <crypto/aes.h>
 #include <crypto/ctr.h>
-#include <crypto/des.h>
+#include <crypto/internal/des.h>
 #include <crypto/gcm.h>
 #include <crypto/sha.h>
 #include <crypto/md5.h>
-- 
2.17.1


  parent reply	other threads:[~2019-08-15  9:01 UTC|newest]

Thread overview: 32+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-08-15  9:00 [PATCH v5 00/30] crypto: DES/3DES cleanup Ard Biesheuvel
2019-08-15  9:00 ` [PATCH v5 01/30] crypto: des/3des_ede - add new helpers to verify keys Ard Biesheuvel
2019-08-15  9:00 ` [PATCH v5 02/30] crypto: s390/des - switch to new verification routines Ard Biesheuvel
2019-08-15  9:00 ` [PATCH v5 03/30] crypto: sparc/des " Ard Biesheuvel
2019-08-15  9:00 ` [PATCH v5 04/30] crypto: atmel/des " Ard Biesheuvel
2019-08-15  9:00 ` [PATCH v5 05/30] crypto: bcm/des " Ard Biesheuvel
2019-08-15  9:00 ` Ard Biesheuvel [this message]
2019-08-15  9:00 ` [PATCH v5 07/30] crypto: cpt/des " Ard Biesheuvel
2019-08-15  9:00 ` [PATCH v5 08/30] crypto: nitrox/des " Ard Biesheuvel
2019-08-15  9:00 ` [PATCH v5 09/30] crypto: ccp/des " Ard Biesheuvel
2019-08-15  9:00 ` [PATCH v5 10/30] crypto: ccree/des " Ard Biesheuvel
2019-08-15  9:00 ` [PATCH v5 11/30] crypto: hifn/des " Ard Biesheuvel
2019-08-15  9:00 ` [PATCH v5 12/30] crypto: hisilicon/des " Ard Biesheuvel
2019-08-15  9:00 ` [PATCH v5 13/30] crypto: safexcel/des " Ard Biesheuvel
2019-08-15  9:00 ` [PATCH v5 14/30] crypto: ixp4xx/des " Ard Biesheuvel
2019-08-15  9:00 ` [PATCH v5 15/30] crypto: cesa/des " Ard Biesheuvel
2019-08-15  9:00 ` [PATCH v5 16/30] crypto: n2/des " Ard Biesheuvel
2019-08-15  9:00 ` [PATCH v5 17/30] crypto: omap/des " Ard Biesheuvel
2019-08-15  9:01 ` [PATCH v5 18/30] crypto: picoxcell/des " Ard Biesheuvel
2019-08-15  9:01 ` [PATCH v5 19/30] crypto: qce/des " Ard Biesheuvel
2019-08-15  9:01 ` [PATCH v5 20/30] crypto: rk3288/des " Ard Biesheuvel
2019-08-15  9:01 ` [PATCH v5 21/30] crypto: stm32/des " Ard Biesheuvel
2019-08-15  9:01 ` [PATCH v5 22/30] crypto: sun4i/des " Ard Biesheuvel
2019-08-15  9:01 ` [PATCH v5 23/30] crypto: talitos/des " Ard Biesheuvel
2019-08-15  9:01 ` [PATCH v5 24/30] crypto: ux500/des " Ard Biesheuvel
2019-08-15  9:01 ` [PATCH v5 25/30] crypto: 3des - move verification out of exported routine Ard Biesheuvel
2019-08-15  9:01 ` [PATCH v5 26/30] crypto: des - remove unused function Ard Biesheuvel
2019-08-15  9:01 ` [PATCH v5 27/30] crypto: des - split off DES library from generic DES cipher driver Ard Biesheuvel
2019-08-15  9:01 ` [PATCH v5 28/30] crypto: x86/des - switch to library interface Ard Biesheuvel
2019-08-15  9:01 ` [PATCH v5 29/30] crypto: des - remove now unused __des3_ede_setkey() Ard Biesheuvel
2019-08-15  9:01 ` [PATCH v5 30/30] fs: cifs: move from the crypto cipher API to the new DES library interface Ard Biesheuvel
2019-08-22  5:56 ` [PATCH v5 00/30] crypto: DES/3DES cleanup Herbert Xu

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