GPG-HD is a deterministic full GPG keychain (CA key + 3 subkeys) generator using as input a BIP-39 phrase. For those who don't want their digital identity to be tied to physical media in case of theft/loss/or electronic failure.

• nodejs
• yarn (or npm)

yarn

./gpg-hd (to echo usage)

./gpg-hd -k ed25519 -u "foo bar <[email protected]" -d "2023-04-20" -s "milk sad wage cup reward umbrella raven visa give list decorate bulb gold raise twenty fly manual stand float super gentle climb fold park"

Or to import straight into your PGP keychain:

./gpg-hd -k ed25519 -u "foo bar <[email protected]" -d "2023-04-20" -s "milk sad wage cup reward umbrella raven visa give list decorate bulb gold raise twenty fly manual stand float super gentle climb fold park" | gpg --import

By default GPG-HD uses 1970-01-1 (Unix epoch of 1 second) to signal a deterministic keychain. Optionally one can over-ride this with -d "2023-08-22T01:43:41.612Z" while key expirations are defaulted to never expire.

On an airgap machine, use a safe brainwallet such as PortalWallet to generate a BIP-39 phrase:

SEED = portalwallet("satoshi")

SEED="fetch december jazz hood pact owner cloth apart impact then person actual"

./gpg-hd -k ed25519 -u "foo bar <[email protected]" -s "$SEED"