[Perc] Magnus Westerlund's Discuss on draft-ietf-perc-srtp-ekt-diet-11: (with DISCUSS)
Magnus Westerlund via Datatracker <noreply@ietf.org> Wed, 05 February 2020 15:18 UTC
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Date: Wed, 05 Feb 2020 07:18:21 -0800
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Subject: [Perc] Magnus Westerlund's Discuss on draft-ietf-perc-srtp-ekt-diet-11: (with DISCUSS)
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Magnus Westerlund has entered the following ballot position for draft-ietf-perc-srtp-ekt-diet-11: Discuss When responding, please keep the subject line intact and reply to all email addresses included in the To and CC lines. (Feel free to cut this introductory paragraph, however.) Please refer to https://www.ietf.org/iesg/statement/discuss-criteria.html for more information about IESG DISCUSS and COMMENT positions. The document, along with other ballot positions, can be found here: https://datatracker.ietf.org/doc/draft-ietf-perc-srtp-ekt-diet/ ---------------------------------------------------------------------- DISCUSS: ---------------------------------------------------------------------- I think there are an important discrpency between the figure and the ABNF for the full EKT message in section 4.1: Figure 1: 0 1 2 3 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ : : : EKT Ciphertext : : : +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Security Parameter Index | Length | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |0 0 0 0 0 0 1 0| +-+-+-+-+-+-+-+-+ The ABNF parts that appears relevant: EKTCiphertext = 1*256BYTE ; EKTEncrypt(EKTKey, EKTPlaintext) Epoch = 2BYTE SPI = 2BYTE FullEKTField = EKTCiphertext SPI Epoch EKTMsgLength EKTMsgTypeFull Note that the above ABNF states that the SPI is followed by a 16-bit Epoch field prior to the length field. Can you please ensure that this discrepancy is clarified.
- [Perc] Magnus Westerlund's Discuss on draft-ietf-… Magnus Westerlund via Datatracker