1#!/bin/bash
2#
3# Copyright (C) 2009 The Android Open Source Project
4#
5# Licensed under the Apache License, Version 2.0 (the "License");
6# you may not use this file except in compliance with the License.
7# You may obtain a copy of the License at
8#
9#      http://www.apache.org/licenses/LICENSE-2.0
10#
11# Unless required by applicable law or agreed to in writing, software
12# distributed under the License is distributed on an "AS IS" BASIS,
13# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14# See the License for the specific language governing permissions and
15# limitations under the License.
16
17# Generates a public/private key pair suitable for use in signing
18# android .apks and OTA update packages.
19
20if [ "$#" -ne 2 ]; then
21  cat <<EOF
22Usage: $0 <name> <subject>
23
24Creates <name>.pk8 key and <name>.x509.pem cert.  Cert contains the
25given <subject>.
26EOF
27  exit 2
28fi
29
30if [[ -e $1.pk8 || -e $1.x509.pem ]]; then
31  echo "$1.pk8 and/or $1.x509.pem already exist; please delete them first"
32  echo "if you want to replace them."
33  exit 1
34fi
35
36# Use named pipes to connect get the raw RSA private key to the cert-
37# and .pk8-creating programs, to avoid having the private key ever
38# touch the disk.
39
40tmpdir=$(mktemp -d)
41trap 'rm -rf ${tmpdir}; echo; exit 1' EXIT INT QUIT
42
43one=${tmpdir}/one
44two=${tmpdir}/two
45mknod ${one} p
46mknod ${two} p
47chmod 0600 ${one} ${two}
48
49read -p "Enter password for '$1' (blank for none; password will be visible): " \
50  password
51
52( openssl genrsa -f4 2048 | tee ${one} > ${two} ) &
53
54openssl req -new -x509 -sha1 -key ${two} -out $1.x509.pem \
55  -days 10000 -subj "$2" &
56
57if [ "${password}" == "" ]; then
58  echo "creating ${1}.pk8 with no password"
59  openssl pkcs8 -in ${one} -topk8 -outform DER -out $1.pk8 -nocrypt
60else
61  echo "creating ${1}.pk8 with password [${password}]"
62  echo $password | openssl pkcs8 -in ${one} -topk8 -outform DER -out $1.pk8 \
63    -passout stdin
64fi
65
66wait
67wait
68