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Bouncy Castle 1.78.1 is affected by GHSA-574f-3g2m-x479,
GHSA-9pwp-9qqc-pr26, GHSA-c3fc-8qff-9hwx and GHSA-qp49-qgx5-5m26, all
fixed by 1.85. PGPainless 1.7.8 is the newest 1.x release. A root
resolution rule keeps every Bouncy Castle module on the catalog version;
before, bcpg 1.77 shipped next to bcprov 1.78.1.
The new stack decrypts the OCB (LibrePGP) packets GnuPG 2.3+ emits by
default, which the old one rejected as "non-standard AEAD". Drop the
NonStandardAEAD error, its bottom sheet and strings, and replace the
mislabelled aead_* fixtures (SHA-1 self-signed keys plus a message
encrypted to an unrelated key) with a real GnuPG 2.5 key and OCB message
that the tests now decrypt. The new fixture is a throwaway test key, so
it is allowlisted in .gitleaksignore by fingerprint.
Fix KeyUtils.isKeyUsable, which compared a Boolean to null and so
accepted every key that parsed, including keys with no encryption
subkey. A signing-only key fixture now covers the rejection path.
Also: migrate the removed SelectUserId.firstMatch and deprecated
addDecryptionPassphrase APIs, keep one copy of the Bouncy Castle
META-INF/LICENSE.md in the APK, and move the existing InvalidPackage
lint baseline entries to the bcpkix 1.86 jar.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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