From: "Longpeng (Mike)" <longpeng2@huawei.com>
To: Herbert Xu <herbert@gondor.apana.org.au>
Cc: <jussi.kivilinna@iki.fi>, <jussi.kivilinna@haltian.com>,
Gonglei <arei.gonglei@huawei.com>,
"Zhoujian (jay, Euler)" <jianjay.zhou@huawei.com>,
"Wubin (H)" <wu.wubin@huawei.com>, <linux-kernel@vger.kernel.org>
Subject: Re: Question about ctr mode 3des-ede IV len
Date: Thu, 8 Dec 2016 17:12:45 +0800 [thread overview]
Message-ID: <5849240D.1000000@huawei.com> (raw)
In-Reply-To: <20161208090415.GA22932@gondor.apana.org.au>
On 2016/12/8 17:04, Herbert Xu wrote:
> On Wed, Dec 07, 2016 at 08:43:16PM +0800, Longpeng (Mike) wrote:
>> Hi Jussi and Herbert,
>>
>> I saw serveral des3-ede testcases(in crypto/testmgr.h) has 16-bytes IV, and the
>> libgcrypt/nettle/RFC1851 said the IV-len is 8-bytes.
>>
>> Would you please tell me why these testcases has 16-bytes IV ?
>
> I think they were automatically generated. Only the first eight
> bytes are actually used so the IV size is still 8.
>
> Cheers,
Cool, thank you very much! :)
--
Regards,
Longpeng(Mike)
prev parent reply other threads:[~2016-12-08 9:17 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-12-07 12:43 Question about ctr mode 3des-ede IV len Longpeng (Mike)
2016-12-07 13:15 ` Jussi Kivilinna
2016-12-08 11:29 ` Longpeng (Mike)
2016-12-08 9:04 ` Herbert Xu
2016-12-08 9:12 ` Longpeng (Mike) [this message]
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