2016-10-10 17:15:41

by Eric Biggers

Subject: [PATCH] crypto: cmac - return -EINVAL if block size is unsupported

cmac_create() previously returned 0 if a cipher with a block size other
than 8 or 16 bytes was specified. It should return -EINVAL instead.
Granted, this doesn't actually change any behavior because cryptomgr
currently ignores any return value other than -EAGAIN from template
->create() functions.

Signed-off-by: Eric Biggers <[email protected]>
---
crypto/cmac.c | 1 +
1 file changed, 1 insertion(+)

diff --git a/crypto/cmac.c b/crypto/cmac.c
index 7a8bfbd..b6c4059 100644
--- a/crypto/cmac.c
+++ b/crypto/cmac.c
@@ -243,6 +243,7 @@ static int cmac_create(struct crypto_template *tmpl, struct rtattr **tb)
case 8:
break;
default:
+ err = -EINVAL;
goto out_put_alg;
}

--
2.8.0.rc3.226.g39d4020

2016-10-21 03:14:58

by Herbert Xu

Subject: Re: [PATCH] crypto: cmac - return -EINVAL if block size is unsupported

On Mon, Oct 10, 2016 at 10:15:14AM -0700, Eric Biggers wrote:
> cmac_create() previously returned 0 if a cipher with a block size other
> than 8 or 16 bytes was specified. It should return -EINVAL instead.
> Granted, this doesn't actually change any behavior because cryptomgr
> currently ignores any return value other than -EAGAIN from template
> ->create() functions.
>
> Signed-off-by: Eric Biggers <[email protected]>

Patch applied. Thanks.
--
Email: Herbert Xu <[email protected]>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt