termux / termux/termux-api

YubiKey support

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#393 27 comments 52 reactions 0 assignees View on GitHub

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Dominant language
Java
Stars
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Forks
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PR merge metrics
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Description

Feature description
Support for YubiKey USB devices in OpenPGP.

Reference implementation
https://github.com/open-keychain/open-keychain

Does another app/terminal emulator have this feature?
OpenKeyChain has this feature on Android

Provide links to more background information

Although OpenKeyChain supports this feature, the PGP implementation in OpenKeyChain doesn't support YubiKeys in such a way that it can decrypt files with a hidden receipt. This creates a problem with password-store (and the password store app) because password store encrypts keys such that the recipient is hidden. See here.

OpenPGP doesn't have this issue, and supporting it would open up possibilities to do signing and key verification on git and any other applications that support PGP.

Contributor guide

No contributing guide indexed for this repository

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start with the linked OpenKeychain implementation and investigate how this project exposes Android USB-device functionality to command-line programs. Define completion around YubiKey-backed OpenPGP decryption with hidden recipients, plus the signing and key-verification uses described in the issue.

Written by the indexing model from the issue text.

Assessment

Tech stack
android, java
Domain
mobile-dev, security
Issue type
Feature
Difficulty
5/5
Estimated time
Over a week
Activity status
Quiet
Clarity
Needs clarification
Newbie friendliness
35/100

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