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 20 if [ "$#" -lt 2 -o "$#" -gt 3 ]; then 21 cat <<EOF 22 Usage: $0 <name> <subject> [<keytype>] 23 24 Creates <name>.pk8 key and <name>.x509.pem cert. Cert contains the 25 given <subject>. A keytype of "rsa" or "ec" is accepted. 26 EOF 27 exit 2 28 fi 29 30 if [[ -e $1.pk8 || -e $1.x509.pem ]]; then 31 echo "$1.pk8 and/or $1.x509.pem already exist; please delete them first" 32 echo "if you want to replace them." 33 exit 1 34 fi 35 36 # Use named pipes to connect get the raw RSA private key to the cert- 37 # and .pk8-creating programs, to avoid having the private key ever 38 # touch the disk. 39 40 tmpdir=$(mktemp -d) 41 trap 'rm -rf ${tmpdir}; echo; exit 1' EXIT INT QUIT 42 43 one=${tmpdir}/one 44 two=${tmpdir}/two 45 mknod ${one} p 46 mknod ${two} p 47 chmod 0600 ${one} ${two} 48 49 read -p "Enter password for '$1' (blank for none; password will be visible): " \ 50 password 51 52 if [ "${3}" = "rsa" -o "$#" -eq 2 ]; then 53 ( openssl genrsa -f4 2048 | tee ${one} > ${two} ) & 54 hash="-sha256" 55 elif [ "${3}" = "ec" ]; then 56 ( openssl ecparam -name prime256v1 -genkey -noout | tee ${one} > ${two} ) & 57 hash="-sha256" 58 else 59 echo "Only accepts RSA or EC keytypes." 60 exit 1 61 fi 62 63 openssl req -new -x509 ${hash} -key ${two} -out $1.x509.pem \ 64 -days 10000 -subj "$2" & 65 66 if [ "${password}" == "" ]; then 67 echo "creating ${1}.pk8 with no password" 68 openssl pkcs8 -in ${one} -topk8 -outform DER -out $1.pk8 -nocrypt 69 else 70 echo "creating ${1}.pk8 with password [${password}]" 71 export password 72 openssl pkcs8 -in ${one} -topk8 -outform DER -out $1.pk8 \ 73 -passout env:password 74 unset password 75 fi 76 77 wait 78 wait 79
