xts_fallback_setkey() in xts_aes_set_key() will now enforce key size
rule in FIPS mode when setting up the fallback algorithm keys, which
makes the check in xts_aes_set_key() redundant or unreachable. So just
drop this check.
xts_fallback_setkey() now makes a key size check in xts_verify_key():
xts_fallback_setkey()
crypto_skcipher_setkey() [ skcipher_setkey_unaligned() ]
cipher->setkey() { .setkey = xts_setkey }
xts_setkey()
xts_verify_key()
Signed-off-by: Vladis Dronov <vdronov@xxxxxxxxxx>
Reviewed-by: Eric Biggers <ebiggers@xxxxxxxxxx>
---
arch/s390/crypto/aes_s390.c | 4 ----
1 file changed, 4 deletions(-)
diff --git a/arch/s390/crypto/aes_s390.c b/arch/s390/crypto/aes_s390.c
index 526c3f40f6a2..c773820e4af9 100644
--- a/arch/s390/crypto/aes_s390.c
+++ b/arch/s390/crypto/aes_s390.c
@@ -398,10 +398,6 @@ static int xts_aes_set_key(struct crypto_skcipher *tfm, const u8 *in_key,
if (err)
return err;
- /* In fips mode only 128 bit or 256 bit keys are valid */
- if (fips_enabled && key_len != 32 && key_len != 64)
- return -EINVAL;
-
/* Pick the correct function code based on the key length */
fc = (key_len == 32) ? CPACF_KM_XTS_128 :
(key_len == 64) ? CPACF_KM_XTS_256 : 0;
--
2.38.1
