Re: [RFC 2/7] crypto: Use GHASH digest algorithm in GCM

From: Sebastian Andrzej Siewior
Date: Wed Jun 17 2009 - 16:47:51 EST


* Huang Ying | 2009-06-11 15:10:28 [+0800]:

>Remove the dedicated GHASH implementation in GCM, and uses the GHASH
>digest algorithm instead. This will make GCM uses hardware accelerated
>GHASH implementation automatically if available.
>
>ahash instead of shash interface is used, because some hardware
>accelerated GHASH implementation needs asynchronous interface.
The outside interface is also async so this should work.

>Signed-off-by: Huang Ying <ying.huang@xxxxxxxxx>
>
>@@ -796,14 +996,15 @@ static int __init crypto_gcm_module_init
> if (err)
> goto out_undo_gcm;
>
>-out:
>- return err;
>+ return 0;
>
> out_undo_gcm:
> crypto_unregister_template(&crypto_gcm_tmpl);
> out_undo_base:
> crypto_unregister_template(&crypto_gcm_base_tmpl);
>- goto out;
>+out:
>+ kfree(gcm_zeroes);
>+ return err;
> }
>
> static void __exit crypto_gcm_module_exit(void)
here you are leaking gcm_zeroes

Sebastian
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