#!/bin/bash -eux
# Copyright 2015 The ChromiumOS Authors
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.

me=${0##*/}
TMP="$me.tmp"

# Work in scratch directory
cd "$OUTDIR"

# Current vb1 keys, including original .pem files.
TESTKEYS=${SRCDIR}/tests/testkeys

# Demonstrate that we can recreate the same vb1 keys without the .keyb files
for sig in rsa1024 rsa2048 rsa4096 rsa8192; do
  for hash in sha1 sha256 sha512; do
    "${FUTILITY}" --vb1 create --hash_alg "${hash}" \
      "${TESTKEYS}/key_${sig}.pem" "${TMP}_key_${sig}.${hash}"
    cmp "${TESTKEYS}/key_${sig}.${hash}.vbprivk" \
      "${TMP}_key_${sig}.${hash}.vbprivk"
    cmp "${TESTKEYS}/key_${sig}.${hash}.vbpubk" \
      "${TMP}_key_${sig}.${hash}.vbpubk"
  done
done


# Demonstrate that we can create some vb21 keypairs. This doesn't prove
# prove anything until we've used them to sign some stuff, though.
for sig in rsa1024 rsa2048 rsa4096 rsa8192; do
  for hash in sha1 sha256 sha512; do
    "${FUTILITY}" --vb21 create --hash_alg "${hash}" \
      "${TESTKEYS}/key_${sig}.pem" "${TMP}_key_${sig}.${hash}"
  done
done

# Demonstrate that the sha1sums are the same for all the keys created from the
# same .pem files, both public and private, vb1 and vb21.
for sig in rsa1024 rsa2048 rsa4096 rsa8192; do
  pem_sum=$("${FUTILITY}" show "${TESTKEYS}/key_${sig}.pem" |
    awk '/sha1sum/ {print $3}')
  # expect only one
  [ "$(echo "$pem_sum" | wc -w)" = 1 ]
  num_keys=$(echo "${TMP}_key_${sig}".* | wc -w)
  key_sums=$("${FUTILITY}" show "${TMP}_key_${sig}".* |
    awk '/sha1sum:|ID:/ {print $NF}')
  num_sums=$(echo "$key_sums" | wc -w)
  # expect one sha1sum (or ID) line per file
  [ "$num_keys" = "$num_sums" ]
  uniq_sums=$(echo "$key_sums" | uniq)
  # note that this also tests that all the key_sums are the same
  [ "$pem_sum" = "$uniq_sums" ]
done

# Demonstrate that we can create some vb21 public key from PEM containing
# only the pubkeypairs and verify it's the same as the one generated from
# the private key.
for sig in rsa1024 rsa2048 rsa4096 rsa8192; do
  for hash in sha1 sha256 sha512; do
    "${FUTILITY}" --vb21 create --hash_alg "${hash}" \
      "${TESTKEYS}/key_${sig}.pub.pem" "${TMP}_key_${sig}.pubonly.${hash}"
    cmp "${TMP}_key_${sig}.pubonly.${hash}.vbpubk2" \
      "${TMP}_key_${sig}.${hash}.vbpubk2"
  done
done

# cleanup
rm -rf "${TMP}"*
exit 0