#!/bin/sh

# Requires expect

PREFIX="THIS IS TOTALLY SUPER SECRET"
PHRASE="THIS IS TOTALLY SUPER SECRET"

# Supress echo, and trap exit for correct restoration
stty -echo
trap 'stty echo' EXIT

# Read without processing at all
IFS=""
read -r MASTER

# Restore state
stty echo
trap - EXIT

USEECHO () {
    echo $1 $2
}

USEKEYCHAIN () {
    expect - <<EOF
spawn keychain --nogui --quiet $1
expect {
  "Enter passphrase for $HOME/.ssh/$1:"; { send "$2\n"; }
}
EOF
}

CALL=USEECHO
if [ "$1" = "-k" ]; then
    CALL=USEKEYCHAIN
    shift
fi;

for NAME in "$@"; do
    PREPASS=$(echo $NAME$PHRASE$MASTER | sha256sum | cut -b -24)
    $CALL $NAME $PREFIX$PREPASS
done