diff mbox series

[v5,10/30] crypto: ccree/des - switch to new verification routines

Message ID 20190815090112.9377-11-ard.biesheuvel@linaro.org
State Accepted
Commit 00cd6b233fc89463d4f4eddeb9abf1e009cc09c0
Headers show
Series crypto: DES/3DES cleanup | expand

Commit Message

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

---
 drivers/crypto/ccree/cc_aead.c   | 24 ++++----------------
 drivers/crypto/ccree/cc_cipher.c | 15 ++++--------
 2 files changed, 8 insertions(+), 31 deletions(-)

-- 
2.17.1
diff mbox series

Patch

diff --git a/drivers/crypto/ccree/cc_aead.c b/drivers/crypto/ccree/cc_aead.c
index a9779a212b18..d3e8faa03f15 100644
--- a/drivers/crypto/ccree/cc_aead.c
+++ b/drivers/crypto/ccree/cc_aead.c
@@ -6,7 +6,7 @@ 
 #include <crypto/algapi.h>
 #include <crypto/internal/aead.h>
 #include <crypto/authenc.h>
-#include <crypto/des.h>
+#include <crypto/internal/des.h>
 #include <linux/rtnetlink.h>
 #include "cc_driver.h"
 #include "cc_buffer_mgr.h"
@@ -649,33 +649,17 @@  static int cc_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;
+		return err;
 
-	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 = verify_aead_des3_key(aead, keys.enckey, keys.enckeylen) ?:
+	      cc_aead_setkey(aead, key, keylen);
 
-	err = cc_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 cc_rfc4309_ccm_setkey(struct crypto_aead *tfm, const u8 *key,
diff --git a/drivers/crypto/ccree/cc_cipher.c b/drivers/crypto/ccree/cc_cipher.c
index 5b58226ea24d..c7ec20e90fc0 100644
--- a/drivers/crypto/ccree/cc_cipher.c
+++ b/drivers/crypto/ccree/cc_cipher.c
@@ -5,7 +5,7 @@ 
 #include <linux/module.h>
 #include <crypto/algapi.h>
 #include <crypto/internal/skcipher.h>
-#include <crypto/des.h>
+#include <crypto/internal/des.h>
 #include <crypto/xts.h>
 #include <crypto/sm4.h>
 #include <crypto/scatterwalk.h>
@@ -411,16 +411,9 @@  static int cc_cipher_setkey(struct crypto_skcipher *sktfm, const u8 *key,
 	 * HW does the expansion on its own.
 	 */
 	if (ctx_p->flow_mode == S_DIN_to_DES) {
-		u32 tmp[DES3_EDE_EXPKEY_WORDS];
-		if (keylen == DES3_EDE_KEY_SIZE &&
-		    __des3_ede_setkey(tmp, &tfm->crt_flags, key,
-				      DES3_EDE_KEY_SIZE)) {
-			dev_dbg(dev, "weak 3DES key");
-			return -EINVAL;
-		} else if (!des_ekey(tmp, key) &&
-			   (crypto_tfm_get_flags(tfm) &
-			    CRYPTO_TFM_REQ_FORBID_WEAK_KEYS)) {
-			tfm->crt_flags |= CRYPTO_TFM_RES_WEAK_KEY;
+		if ((keylen == DES3_EDE_KEY_SIZE &&
+		     verify_skcipher_des3_key(sktfm, key)) ||
+		    verify_skcipher_des_key(sktfm, key)) {
 			dev_dbg(dev, "weak DES key");
 			return -EINVAL;
 		}