From: Herbert Xu <herbert@gondor.apana.org.au>
To: Stephan Mueller <smueller@chronox.de>
Cc: linux-crypto@vger.kernel.org
Subject: Re: [PATCH] crypto: add key wrapping block chaining mode
Date: Thu, 23 Apr 2015 09:46:09 +0800 [thread overview]
Message-ID: <20150423014609.GA17267@gondor.apana.org.au> (raw)
In-Reply-To: <2382170.NBi3QxkUu4@myon.chronox.de>
On Thu, Apr 23, 2015 at 03:39:11AM +0200, Stephan Mueller wrote:
>
> The KW does not return an IV. The IV is used for encryption to stir the
> encryption a bit. The resulting ciphertext now contains the mixed in IV. For
> decryption, the IV is only used to verify that the one block in the decryption
> operation matches the IV.
>
> So, there is no IV returned by the encryption.
Of course there is. The first 8 bytes of the ciphertext is the
output IV.
If you really want to pedantic then make a function wrapper around
the whole thing and copy the IV in there.
Cheers,
--
Email: Herbert Xu <herbert@gondor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt
next prev parent reply other threads:[~2015-04-23 1:46 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-04-22 4:36 [PATCH] crypto: add key wrapping block chaining mode Stephan Mueller
2015-04-22 5:48 ` Herbert Xu
2015-04-22 12:44 ` Stephan Mueller
2015-04-23 1:39 ` Herbert Xu
2015-04-23 1:40 ` Stephan Mueller
2015-04-22 5:53 ` Herbert Xu
2015-04-22 6:13 ` Herbert Xu
2015-04-22 12:23 ` Stephan Mueller
2015-04-22 14:11 ` Stephan Mueller
2015-04-23 1:37 ` Herbert Xu
2015-04-23 1:33 ` Herbert Xu
2015-04-23 1:39 ` Stephan Mueller
2015-04-23 1:46 ` Herbert Xu [this message]
2015-04-23 1:58 ` Stephan Mueller
2015-04-23 2:03 ` Herbert Xu
2015-04-23 2:51 ` Stephan Mueller
2015-04-23 2:55 ` Herbert Xu
2015-04-23 13:42 ` Stephan Mueller
2015-04-23 23:21 ` Herbert Xu
2015-04-24 0:22 ` Stephan Mueller
2015-04-24 0:24 ` Herbert Xu
2015-04-22 6:06 ` Herbert Xu
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