From 1ba34e71e9e56ac29a52e0d42b6290f3dc5bfd90 Mon Sep 17 00:00:00 2001
From: Christophe Leroy <christophe.leroy@c-s.fr>
Date: Tue, 21 May 2019 13:34:10 +0000
Subject: [PATCH] crypto: talitos - check AES key size
Git-commit: 1ba34e71e9e56ac29a52e0d42b6290f3dc5bfd90
References: git-fixes
Patch-mainline: v5.3-rc1
Although the HW accepts any size and silently truncates
it to the correct length, the extra tests expects EINVAL
to be returned when the key size is not valid.
Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Fixes: 4de9d0b547b9 ("crypto: talitos - Add ablkcipher algorithms")
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Oliver Neukum <oneukum@suse.com>
---
drivers/crypto/talitos.c | 15 +++++++++++++++
1 file changed, 15 insertions(+)
--- a/drivers/crypto/talitos.c
+++ b/drivers/crypto/talitos.c
@@ -1530,6 +1530,18 @@ static int ablkcipher_setkey(struct cryp
return 0;
}
+static int ablkcipher_aes_setkey(struct crypto_ablkcipher *cipher,
+ const u8 *key, unsigned int keylen)
+{
+ if (keylen == AES_KEYSIZE_128 || keylen == AES_KEYSIZE_192 ||
+ keylen == AES_KEYSIZE_256)
+ return ablkcipher_setkey(cipher, key, keylen);
+
+ crypto_ablkcipher_set_flags(cipher, CRYPTO_TFM_RES_BAD_KEY_LEN);
+
+ return -EINVAL;
+}
+
static void common_nonsnoop_unmap(struct device *dev,
struct talitos_edesc *edesc,
struct ablkcipher_request *areq)
@@ -2607,6 +2619,7 @@ static struct talitos_alg_template drive
.min_keysize = AES_MIN_KEY_SIZE,
.max_keysize = AES_MAX_KEY_SIZE,
.ivsize = AES_BLOCK_SIZE,
+ .setkey = ablkcipher_aes_setkey,
}
},
.desc_hdr_template = DESC_HDR_TYPE_COMMON_NONSNOOP_NO_AFEU |
@@ -2623,6 +2636,7 @@ static struct talitos_alg_template drive
.min_keysize = AES_MIN_KEY_SIZE,
.max_keysize = AES_MAX_KEY_SIZE,
.ivsize = AES_BLOCK_SIZE,
+ .setkey = ablkcipher_aes_setkey,
}
},
.desc_hdr_template = DESC_HDR_TYPE_COMMON_NONSNOOP_NO_AFEU |
@@ -2640,6 +2654,7 @@ static struct talitos_alg_template drive
.min_keysize = AES_MIN_KEY_SIZE,
.max_keysize = AES_MAX_KEY_SIZE,
.ivsize = AES_BLOCK_SIZE,
+ .setkey = ablkcipher_aes_setkey,
}
},
.desc_hdr_template = DESC_HDR_TYPE_AESU_CTR_NONSNOOP |