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authorHerbert Xu <herbert@gondor.apana.org.au>2019-04-11 11:50:58 +0300
committerHerbert Xu <herbert@gondor.apana.org.au>2019-04-18 17:14:59 +0300
commiteee25da50baaa32790dbe82d60754936ceb82042 (patch)
treeb884635c3cb496db342ea9c52c85bae0ec99eb61 /arch/sparc/crypto
parent55902d8514483bd2c94f375b5259224520a1fd6b (diff)
downloadlinux-eee25da50baaa32790dbe82d60754936ceb82042.tar.xz
crypto: sparc - Forbid 2-key 3DES in FIPS mode
This patch forbids the use of 2-key 3DES (K1 == K3) in FIPS mode. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'arch/sparc/crypto')
-rw-r--r--arch/sparc/crypto/des_glue.c11
1 files changed, 4 insertions, 7 deletions
diff --git a/arch/sparc/crypto/des_glue.c b/arch/sparc/crypto/des_glue.c
index 4884315daff4..453a4cf5492a 100644
--- a/arch/sparc/crypto/des_glue.c
+++ b/arch/sparc/crypto/des_glue.c
@@ -201,18 +201,15 @@ static int des3_ede_set_key(struct crypto_tfm *tfm, const u8 *key,
unsigned int keylen)
{
struct des3_ede_sparc64_ctx *dctx = crypto_tfm_ctx(tfm);
- const u32 *K = (const u32 *)key;
u32 *flags = &tfm->crt_flags;
u64 k1[DES_EXPKEY_WORDS / 2];
u64 k2[DES_EXPKEY_WORDS / 2];
u64 k3[DES_EXPKEY_WORDS / 2];
+ int err;
- if (unlikely(!((K[0] ^ K[2]) | (K[1] ^ K[3])) ||
- !((K[2] ^ K[4]) | (K[3] ^ K[5]))) &&
- (*flags & CRYPTO_TFM_REQ_FORBID_WEAK_KEYS)) {
- *flags |= CRYPTO_TFM_RES_WEAK_KEY;
- return -EINVAL;
- }
+ err = __des3_verify_key(flags, key);
+ if (unlikely(err))
+ return err;
des_sparc64_key_expand((const u32 *)key, k1);
key += DES_KEY_SIZE;