sub rosa by naiveHA2.4.0

sub rosa by naiveHA programs a YubiKey with a static password and lets the hardware key enter that password when required. It is intended for configuration rather than general password management, keeping the static password on the security key instead of managing a broader password collection. Once configured, the key can be used with phones, tablets, and computers for hardware-based password entry.

The app also supports programming OpenPGP keys onto a compatible hardware security key, giving users a mobile way to prepare key material for supported hardware. It suits people who already use a YubiKey and want to configure it from an Android phone or tablet, as well as users who handle OpenPGP keys and want to place them on dedicated hardware. Its use connects password entry and cryptographic key handling to a physical security device rather than limiting those tasks to the phone.

Version 2.4.0 supports Android 12 and later, with arm64-v8a, armeabi-v7a, x86_64, and x86 architectures. The project is open-source, so its code is available under an open-source license. sub rosa by naiveHA is focused specifically on setting up and using hardware-backed passwords and OpenPGP keys, not on unrelated device functions.