[Rpm-maint] [rpm-software-management/rpm] Support updating individual IDs in a digest bundle (PR #3855)

[Panu Matilainen]

Up to now, rpm digest bundles have only needed to support data from a single stream - just covering different ranges and algorithms. But OpenPGP v6 signature salt is a random per-signature thing that we need to feed into the digest before the actual data, so we need to be able to update each ID in a bundle individually too.

Luckily this is easy to do. Add a small test-program to exercise it, we can't yet actually use it for testing a real-world V6 scenario anyway.

Fixes: #3845
You can view, comment on, or merge this pull request online at:

  https://github.com/rpm-software-management/rpm/pull/3855

-- Commit Summary --

  * Support updating individual IDs in a digest bundle

-- File Changes --

    M include/rpm/rpmcrypto.h (11)
    M rpmio/digest.cc (13)
    M tests/CMakeLists.txt (2)
    A tests/rpmdig.c (40)
    M tests/rpmsigdig.at (15)

-- Patch Links --

https://github.com/rpm-software-management/rpm/pull/3855.patch
https://github.com/rpm-software-management/rpm/pull/3855.diff

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