Individual skill
gpg-expert
GPG guidance — key management, signing commits, encrypting files, subkeys, revocation, and YubiKey workflows.
skills/gpg-expert/SKILL.md
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- Observed behavior
- Instructions only
- Last checked
- Nov 11, 2026
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- Repository last updated
- Oct 10, 2026
- License
- MIT
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## Overview
GPG (GNU Privacy Guard) is the OpenPGP implementation behind signed git commits, encrypted files, and verified software releases. Its reputation for being hard to use is deserved — but the working subset (generate a key, sign commits, encrypt to recipients, manage subkeys, revoke when needed) is learnable in an afternoon and covers 95% of real usage.
This skill covers that working subset plus the operational practices that matter: subkeys for daily use, hardware keys (YubiKey) for high-value identities, revocation certificates generated before you need them, and the keyserver/Web-of-Trust realities of 2026.
## When to use
- Signing git commits and tags.
- Encrypting files or secrets for specific recipients.
- Setting up GPG subkeys and moving keys to a YubiKey.
- Generating revocation certificates.
- Verifying signatures on releases.
- Choosing between GPG, age, and SSH-based signing.