129 lines
4.9 KiB
Bash
129 lines
4.9 KiB
Bash
#!/bin/sh
|
|
#################################################################
|
|
# #
|
|
# Copyright 2010 Fidelity Information Services, Inc #
|
|
# #
|
|
# This source code contains the intellectual property #
|
|
# of its copyright holder(s), and is made available #
|
|
# under a license. If you do not know the terms of #
|
|
# the license, please stop and do not read further. #
|
|
# #
|
|
#################################################################
|
|
|
|
#############################################################################################
|
|
#
|
|
# gen_keypair.sh - Generates a new public/private key pair for the current user.
|
|
# The email address identifies the user. It is an error if the gpg keyring exists.
|
|
#
|
|
# Arguments:
|
|
# $1 - Email ID of the current user
|
|
# $2 - Optional; Any residual text on line is full name of user
|
|
#
|
|
#############################################################################################
|
|
|
|
# GnuPG uses $GNUPGHOME, if set, for GNU Privacy Guard keyring
|
|
# Script uses $gtm_pubkey, if set for file containing exported ASCII armored public key
|
|
|
|
hostos=`uname -s`
|
|
# try to get a predictable which
|
|
if [ "OS/390" = "$hostos" ] ; then which=whence ;
|
|
elif [ -x "/usr/bin/which" ] ; then which=/usr/bin/which
|
|
else which=which
|
|
fi
|
|
|
|
# temporary file
|
|
if [ -x "`$which mktemp 2>&1`" ] ; then tmp_file=`mktemp`
|
|
else tmp_file=/tmp/`basename $0`_$$.tmp ; fi
|
|
touch $tmp_file
|
|
chmod go-rwx $tmp_file
|
|
trap 'rm -rf $tmp_file ; stty sane ; exit 1' HUP INT QUIT TERM TRAP
|
|
|
|
# echo and options
|
|
ECHO=/bin/echo
|
|
ECHO_OPTIONS=""
|
|
#Linux honors escape sequence only when run with -e
|
|
if [ "Linux" = "$hostos" ] ; then ECHO_OPTIONS="-e" ; fi
|
|
|
|
# e-mail address is a mandatory parameter for GnuPG and cannot be null.
|
|
if [ $# -lt 1 ] ; then
|
|
$ECHO "Usage: `basename $0` email_address [Real name]" ; exit 1
|
|
fi
|
|
email=$1 ; shift
|
|
|
|
# Identify GnuPG - it is required
|
|
if [ -x "`$which gpg 2>&1`" ] ; then gpg=gpg
|
|
elif [ -x "`$which gpg2 2>&1`" ] ; then gpg=gpg2
|
|
else $ECHO "Able to find neither gpg nor gpg2. Exiting" ; exit 1 ; fi
|
|
|
|
# Default file for exported public key, if not specified
|
|
if [ -z "$gtm_pubkey" ] ; then gtm_pubkey="${email}_pubkey.txt" ; fi
|
|
|
|
# If nothing on the command line for the user name, use userid
|
|
if [ $# -ge 1 ] ; then gtm_user="$*" ; else gtm_user=$USER ; fi
|
|
|
|
# If GNUPGHOME is already defined, then use this as the place to store the keys. If undefined,
|
|
# use $HOME/.gnupg (default for GnuPG)
|
|
if [ -z "$GNUPGHOME" ]; then
|
|
gtm_gpghome="$HOME/.gnupg"
|
|
else
|
|
gtm_gpghome="$GNUPGHOME"
|
|
fi
|
|
|
|
if [ -d "$gtm_gpghome" -o -f "$gtm_gpghome" ] ; then
|
|
$ECHO "$gtm_gpghome already exists; cannot create a new directory" ; exit 1
|
|
fi
|
|
mkdir -p $gtm_gpghome
|
|
if [ ! -d $gtm_gpghome ] ; then
|
|
$ECHO "Unable to create directory $gtm_gpghome" ; exit 1
|
|
fi
|
|
trap 'rm -rf $tmp_file $gtm_gpghome ; stty sane ; exit 1' HUP INT QUIT TERM TRAP
|
|
chmod go-rwx $gtm_gpghome
|
|
|
|
# Get passphrase for new GnuPG keyring
|
|
unset passphrase
|
|
while [ -z "$passphrase" ] ; do
|
|
$ECHO $ECHO_OPTIONS Passphrase for new keyring: \\c ; stty -echo ; read passphrase ; stty echo ; $ECHO ""
|
|
$ECHO $ECHO_OPTIONS Verify passphrase: \\c ; stty -echo ; read tmp ; stty echo ; $ECHO ""
|
|
if [ "$passphrase" != "$tmp" ] ; then
|
|
$ECHO Verification does not match passphrase. Try again. ; unset passphrase
|
|
fi
|
|
unset tmp
|
|
done
|
|
|
|
# Fill out the unattended key generation details including the passphrase and email address
|
|
key_info="Key-Type: DSA\n Key-Length: 1024\n Subkey-Type: RSA\n Subkey-Length: 2048\n Name-Real: $gtm_user\n"
|
|
key_info=$key_info" Name-Email: $email\n Expire-Date: 0\n Passphrase: $passphrase\n %commit\n %echo Generated\n"
|
|
|
|
# Run the unattended GnuPG key generation. Any errors will be output to gen_key.log
|
|
# which will later be removed.
|
|
|
|
$ECHO Key ring will be created in $gtm_gpghome
|
|
$ECHO Key generation might take some time. Do something that will create entropy,
|
|
$ECHO like moving the mouse or typing in another session.
|
|
$ECHO $ECHO_OPTIONS $key_info | $gpg --homedir $gtm_gpghome --no-tty --batch --gen-key 2> $tmp_file
|
|
|
|
# Set up pinentry-gtm so that GnuPG version 2 pinentry will return password from
|
|
# obfuscated password. dir should be an absolute path name.
|
|
dir=`dirname $0`
|
|
if [ -z "$dir" ] ; then dir=$PWD
|
|
else
|
|
case $dir in
|
|
/*) ;;
|
|
.) dir=$PWD ;;
|
|
*) dir=$PWD/$dir ;;
|
|
esac
|
|
fi
|
|
$ECHO "pinentry-program $dir/pinentry-gtm.sh" >$gtm_gpghome/gpg-agent.conf
|
|
|
|
$gpg --homedir $gtm_gpghome --list-keys | grep "$email" >> $tmp_file
|
|
if [ $? ]; then
|
|
$gpg --homedir $gtm_gpghome --export --armor -o $gtm_pubkey
|
|
$gpg --homedir $gtm_gpghome --list-keys --fingerprint
|
|
$ECHO "Key pair created and public key exported in ASCII to $gtm_pubkey"
|
|
else
|
|
$ECHO "Error creating public key/private key pairs."
|
|
cat $tmp_file
|
|
fi
|
|
|
|
rm -f $tmp_file
|