gpg: add helper scripts

scripts/gpg-init

@@ -0,0 +1,16 @@
+#!/bin/bash
+set -eux
+
+USER_ID="${1}"
+HOMEDIR=~/.gnupg/trezor
+CURVE="ed25519"  # or "nist256p1"
+
+rm -rf "${HOMEDIR}"
+mkdir -p "${HOMEDIR}"
+chmod 700 "${HOMEDIR}"
+
+trezor-gpg -v create "${USER_ID}" -e "${CURVE}" > "${HOMEDIR}/pubkey.asc"
+gpg2 --homedir "${HOMEDIR}" --import < "${HOMEDIR}/pubkey.asc"
+gpg2 --homedir "${HOMEDIR}" --edit-key "${USER_ID}" trust
+
+$(dirname $0)/gpg-shell

scripts/gpg-shell

@@ -0,0 +1,16 @@
+#!/bin/bash
+set -eu
+
+export GNUPGHOME=~/.gnupg/trezor
+gpg2 -k --with-keygrip
+
+killall -q trezor-gpg || true
+trezor-gpg agent &
+AGENT_PID=$!
+sleep 1
+
+echo "Starting GPG-enabled shell..."
+${SHELL}
+echo "Stopping GPG-enabled shell..."
+
+kill ${AGENT_PID}