keybase-to-rsa.sh

#!/bin/bash

echo "Start Export Process"

echo "Log into Keybase..."
keybase login

echo "Exporting your PGP keys..."
keybase pgp export -o keybase.public.key
keybase pgp export -s -o keybase.private.key

echo "Importing your Keybase keys..."
gpg -q --import keybase.public.key
gpg -q --allow-secret-key-import --import keybase.private.key
HASH=$(gpg --list-keys | grep -A1 '^pub\s*.*\/*.\s.*' | tail -n 1 | sed -e 's/^[ \t]*//')

# We clean the passphrase to export the key
gpg --passwd $HASH

echo "Generating RSA keys..."
gpg --export-secret-keys $HASH | openpgp2ssh $HASH > id_rsa
chmod 400 id_rsa
gpg --export $HASH | openpgp2ssh $HASH > id_rsa.pub

echo "Cleaning up..."
gpg --delete-secret-key $HASH
gpg --delete-keys $HASH
rm *.key

echo "Success"