bugDistributed Privacy Guard - Bugs: bug #56877, dkg-decrypt should be able to...


bug #56877: dkg-decrypt should be able to verify intended recipients even when only using a session key

Submitter:  Daniel Kahn Gillmor <dkg>
Submitted:  Mon 09 Sep 2019 03:32:34 PM UTC
Category:  Source Code Severity:  2 - Minor
Item Group:  Feature Request Status:  In Progress
Privacy:  Public Assigned to:  stamer
Open/Closed:  Open
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Mon 09 Sep 2019 07:27:52 PM UTC, comment #1: 

There is already an option ("-K, --weak") that allow keys with weak cryptographic parameters for verification of included signatures. It could be reused here.

If no Intended Recipients are defined by a corresponding signature subpacket then no check is done at all.

Heiko Stamer <stamer>
Group administrator
Mon 09 Sep 2019 03:32:34 PM UTC, original submission:  

over in https://gitlab.com/openpgp-wg/rfc4880bis/merge_requests/19#note_213879442 Heiko and i were discussing how to deal with intended_recipients subpackets when decrypting with only a session key.

one option is to "weaken" the strictness, but i think maybe we need to state what the strictness actually is intended to do in this case.

For example, how strict is the tooling if the decryption is done by a secret key whose corresponding OpenPGP certificate is expired or revoked?  what sort of time bounds are checked?  what happens if no intended_recipients subpacket is present at all?

Daniel Kahn Gillmor <dkg>


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    Follow 5 latest changes.

    Date Changed by Updated Field Previous Value => Replaced by
    2019-10-23 stamer Severity3 - Normal 2 - Minor
    2019-10-23 stamer CategoryNone Source Code
        Item GroupNone Feature Request
    2019-09-09 stamer StatusNone In Progress
        Assigned toNone stamer

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