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[RFC,14/30] crypto: ixp4xx/des - switch to new verification routines

Message ID 20190622003112.31033-15-ard.biesheuvel@linaro.org
State Superseded
Headers show
Series crypto: DES/3DES cleanup | expand

Commit Message

Ard Biesheuvel June 22, 2019, 12:30 a.m. UTC 
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>

---
 drivers/crypto/ixp4xx_crypto.c | 22 +++++++-------------
 1 file changed, 7 insertions(+), 15 deletions(-)

-- 
2.20.1
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Patch

diff --git a/drivers/crypto/ixp4xx_crypto.c b/drivers/crypto/ixp4xx_crypto.c
index 3f40be34ac95..e3bc61eb873d 100644
--- a/drivers/crypto/ixp4xx_crypto.c
+++ b/drivers/crypto/ixp4xx_crypto.c
@@ -21,7 +21,7 @@ 
 #include <linux/module.h>
 
 #include <crypto/ctr.h>
-#include <crypto/des.h>
+#include <crypto/internal/des.h>
 #include <crypto/aes.h>
 #include <crypto/hmac.h>
 #include <crypto/sha.h>
@@ -760,10 +760,7 @@  static int setup_cipher(struct crypto_tfm *tfm, int encrypt,
 		}
 		cipher_cfg |= keylen_cfg;
 	} else {
-		u32 tmp[DES_EXPKEY_WORDS];
-		if (des_ekey(tmp, key) == 0) {
-			*flags |= CRYPTO_TFM_RES_WEAK_KEY;
-		}
+		des_verify_key(tfm, key, key_len);
 	}
 	/* write cfg word to cryptinfo */
 	*(u32*)cinfo = cpu_to_be32(cipher_cfg);
@@ -855,12 +852,12 @@  static int ablk_setkey(struct crypto_ablkcipher *tfm, const u8 *key,
 static int ablk_des3_setkey(struct crypto_ablkcipher *tfm, const u8 *key,
 			    unsigned int key_len)
 {
-	u32 flags = crypto_ablkcipher_get_flags(tfm);
 	int err;
 
-	err = __des3_verify_key(&flags, key);
+	err = crypto_des3_ede_verify_key(crypto_ablkcipher_tfm(tfm), key,
+					 keylen);
 	if (unlikely(err))
-		crypto_ablkcipher_set_flags(tfm, flags);
+		return err;
 
 	return ablk_setkey(tfm, key, key_len);
 }
@@ -1185,7 +1182,6 @@  static int des3_aead_setkey(struct crypto_aead *tfm, const u8 *key,
 			    unsigned int keylen)
 {
 	struct ixp_ctx *ctx = crypto_aead_ctx(tfm);
-	u32 flags = CRYPTO_TFM_RES_BAD_KEY_LEN;
 	struct crypto_authenc_keys keys;
 	int err;
 
@@ -1197,11 +1193,8 @@  static int des3_aead_setkey(struct crypto_aead *tfm, const u8 *key,
 	if (keys.authkeylen > sizeof(ctx->authkey))
 		goto badkey;
 
-	if (keys.enckeylen != DES3_EDE_KEY_SIZE)
-		goto badkey;
-
-	flags = crypto_aead_get_flags(tfm);
-	err = __des3_verify_key(&flags, keys.enckey);
+	err = crypto_des3_ede_verify_key(crypto_aead_tfm(tfm), keys.enckey,
+					 keys.enckeylen);
 	if (unlikely(err))
 		goto badkey;
 
@@ -1213,7 +1206,6 @@  static int des3_aead_setkey(struct crypto_aead *tfm, const u8 *key,
 	memzero_explicit(&keys, sizeof(keys));
 	return aead_setup(tfm, crypto_aead_authsize(tfm));
 badkey:
-	crypto_aead_set_flags(tfm, flags);
 	memzero_explicit(&keys, sizeof(keys));
 	return err;
 }