Re: [AVT] possible error on testvectors of draft "draft-ietf-avt-srtp-08.txt"
Mats Näslund <mats.naslund@ericsson.com> Tue, 08 July 2003 09:47 UTC
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Date: Tue, 08 Jul 2003 11:41:06 +0200
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From: Mats Näslund <mats.naslund@ericsson.com>
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To: Claudio Thomas <claudio.thomas@kako.de>
CC: avt@ietf.org
Subject: Re: [AVT] possible error on testvectors of draft "draft-ietf-avt-srtp-08.txt"
References: <000c01c34526$3ae13f60$1e0ba8c0@kako.de>
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Dear Claudio, Your observation appears correct. Unfortunately, the person coding our f8 test code is on vacation, so it will take some time before we can explain what the actual error is. (A *hypothesis* is that our code has side-effects on the variable IV', so that IV' is not kept fixed, but rather updated "by accident".) Thanks for being observant, we will get back as soon as we can. /Mats Claudio Thomas wrote: > Actual link: <http://www.ietf.org/internet-drafts/draft-ietf-avt-srtp-08.txt> http://www.ietf.org/internet-drafts/draft-ietf-avt-srtp-08.txt > > > > Chapter B.1 AES-f8 Test Vectors (page 52) > > > > Position: j=2 > > > > IV' XOR j : 595b699bbd3bc0df26062093c1ad8f70 > > Should be > > IV' XOR j : 595b699bbd3bc0df26062093c1ad8f71 > > > > Reason: > > Last byte of IV' = 73, j=02: 73 xor 02 = 71 (0011 xor 0010 = 0001) > > > > If my calculator is right, then the values after this position also can't be correct. > > > > Do someone have already implemented it to give me working vextors? Or can somebody explain me what is wrong on my calc? > > > > Thanks, > > > > Claudio > _______________________________________________ Audio/Video Transport Working Group avt@ietf.org https://www1.ietf.org/mailman/listinfo/avt
- [AVT] possible error on testvectors of draft "dra… Claudio Thomas
- Re: [AVT] possible error on testvectors of draft … Mats Näslund