Re: [dtn] AD review of draft-ietf-dtn-bpsec-default-sc-02
Martin Duke <martin.h.duke@gmail.com> Wed, 12 May 2021 21:26 UTC
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From: Martin Duke <martin.h.duke@gmail.com>
Date: Wed, 12 May 2021 14:17:38 -0700
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Subject: Re: [dtn] AD review of draft-ietf-dtn-bpsec-default-sc-02
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Hello DTN, As Zahed is still on medical leave, I have conducted a partial review of draft-ietf-dtn-bpsec-default-sc-06 to check that it fully complies with the outcome of his AD review. I apologize for any errors due to my insufficient context -- I have not read the entire draft yet. (3.3.2) I appreciate the new Key Management section, but I don't want to lose part of Zahed's original review -- does the key wrapping [AES-KW] include enough metadata that the receiver can select the correct cipher and key to use without having to do trial decryption? (3.3.3) IMO the discussion about a registry for Integrity Scope Flags petered out with a clear resolution -- are the authors of the opinion that use of more of these flags is simply inconceivable? A registry would provide guidelines for how to assign more of these in future. (4.1) In item (3), it states "The use of the Galois/Counter Mode produces cipher-text with the same size as the plain text". My understanding of GCM is that there is a 128 or 256 bit authentication tag appended to it that makes the whole of the cipher text larger than the plaintext. Is this a semantic thing, am I wrong, or are you wrong? (6.1) I fear that you successfully scrubbed sc-02 for lower-case normative words, but then added new stuff here. Specifically: "must be able to perform the following activities" "This may include pre-sharing of key encryption keys" Please verify that these should not be capitalized. Regards, Martin
- [dtn] AD review of draft-ietf-dtn-bpsec-default-s… Zaheduzzaman Sarker
- Re: [dtn] AD review of draft-ietf-dtn-bpsec-defau… Birrane, Edward J.
- Re: [dtn] AD review of draft-ietf-dtn-bpsec-defau… Zaheduzzaman Sarker
- Re: [dtn] AD review of draft-ietf-dtn-bpsec-defau… Brian Sipos
- Re: [dtn] AD review of draft-ietf-dtn-bpsec-defau… Rick Taylor
- Re: [dtn] AD review of draft-ietf-dtn-bpsec-defau… Zaheduzzaman Sarker
- Re: [dtn] AD review of draft-ietf-dtn-bpsec-defau… Rick Taylor
- Re: [dtn] AD review of draft-ietf-dtn-bpsec-defau… Birrane, Edward J.
- Re: [dtn] AD review of draft-ietf-dtn-bpsec-defau… Birrane, Edward J.
- Re: [dtn] AD review of draft-ietf-dtn-bpsec-defau… Martin Duke
- Re: [dtn] AD review of draft-ietf-dtn-bpsec-defau… Mehmet Adalier
- Re: [dtn] [EXT] Re: AD review of draft-ietf-dtn-b… Birrane, Edward J.
- Re: [dtn] [EXT] Re: AD review of draft-ietf-dtn-b… R. Atkinson
- Re: [dtn] [EXT] Re: AD review of draft-ietf-dtn-b… Martin Duke
- Re: [dtn] [EXT] Re: AD review of draft-ietf-dtn-b… Birrane, Edward J.
- Re: [dtn] [EXT] Re: AD review of draft-ietf-dtn-b… Martin Duke
- Re: [dtn] [EXT] Re: AD review of draft-ietf-dtn-b… Birrane, Edward J.
- Re: [dtn] [EXT] Re: AD review of draft-ietf-dtn-b… Martin Duke
- Re: [dtn] [EXT] Re: AD review of draft-ietf-dtn-b… Zaheduzzaman Sarker