Receive message from Tasker. Sign with Keybase PGP. Return signature.

tasker_keybase_sign.sh

#!/usr/bin/expect -f
#am broadcast --user 0 -a net.dinglish.tasker.[task name] -e [variable name] "[value]" > /dev/null
#Send passphrase as argument to keybase for PGP SIGN from pgp_input.txt to pgp_output.txt
#Uses Tasker, Termux and Keybase

set timeout -1
set PGP_PASS [lindex $argv 0];
spawn keybase --standalone pgp sign -c -o pgp_output.txt -i /data/data/com.termux/files/home/storage/shared/pgp_input.txt
expect {
      "re:" {
            send "$PGP_PASS\r"
            }
       }
sleep 2
set OUTPUT [exec cat pgp_output.txt]

exec am broadcast --user 0 -a net.dinglish.tasker.keybasesignature -e keybase_signature $OUTPUT > /dev/null