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#!/bin/bash
#
# Generate keypairs.
#
# This script is just a wrapper to easily generate keys for
# automated systems.
#
# Generate a keypair, ssh version
function genpair_ssh {
echo "Make sure that $KEYDIR is atop of an encrypted volume."
read -p "Hit ENTER to continue." prompt
# TODO: programatically enter blank passphrase twice
ssh-keygen -t dsa -f $WORK/id_dsa -C "root@$NODE"
# Encrypt the result
cat $WORK/id_dsa | keyringer_exec encrypt $BASEDIR $FILE
cat $WORK/id_dsa.pub | keyringer_exec encrypt $BASEDIR $FILE.pub
echo "Done"
}
# Generate a keypair, gpg version
function genpair_gpg {
echo "Make sure that $KEYDIR is atop of an encrypted volume."
read -s -p "Enter password for the private key: " passphrase
# TODO: insert 279 random bytes
gpg --homedir $WORK --gen-key --batch <<EOF
Key-Type: DSA
Key-Length: 1024
Subkey-Type: ELG-E
Subkey-Length: 4096
Name-Real: $NODE
Name-Comment: backupninja
Name-Email: root@$NODE
Expire-Date: 0
Passphrase: $passphrase
%commit
EOF
# Encrypt the result
gpg --homedir $WORK --export-secret-keys | keyringer_exec encrypt $BASEDIR $FILE
gpg --homedir $WORK --export | keyringer_exec encrypt $BASEDIR $FILE.pub
echo "Passphrase for $FILE: $passphrase" | keyringer_exec encrypt $BASEDIR $FILE.passwd
echo "Done"
}
# Generate a keypair, ssl version
function genpair_ssl {
echo "Make sure that $KEYDIR is atop of an encrypted volume."
read -p "Hit ENTER to continue." prompt
# Setup
cd $WORK
# Generate certificate
$LIB/csr.sh $NODE
# Self-sign
openssl x509 -in $NODE"_csr.pem" -out $NODE.crt -req -signkey $NODE"_privatekey.pem" -days 365
chmod 600 $NODE"_privatekey.pem"
# Encrypt the result
cat $NODE"_privatekey.pem" | keyringer_exec encrypt $BASEDIR $FILE.pem
cat $NODE"_csr.pem" | keyringer_exec encrypt $BASEDIR $FILE.csr.pem
cat $NODE.crt | keyringer_exec encrypt $BASEDIR $FILE.crt
echo "Done"
cd $CWD
}
# Load functions
LIB="`dirname $0`/../../lib/keyringer"
source $LIB/functions
# Config
ACTIONS="`dirname $0`"
BASEDIR="$1"
KEYDIR="$BASEDIR/keys"
KEYTYPE="$2"
FILE="$3"
NODE="$4"
BASENAME="`basename $0`"
CWD="`pwd`"
# Verify
if [ -z "$NODE" ]; then
echo "Usage: $BASENAME <keydir> <gpg|ssh|ssl> <file> <hostname>"
exit 1
elif [ ! -e "$KEYDIR" ]; then
echo "Folder not found: $KEYDIR, leaving"
exit 1
fi
# Prepare
mkdir -p $KEYDIR && chmod 700 $KEYDIR
WORK="`mktemp -d $KEYDIR/genpair.XXXXXX`"
if [ "$?" != "0" ]; then
echo "Error setting up $WORK"
exit 1
fi
# Dispatch
genpair_$KEYTYPE
# Cleanup
cd $CWD
rm -rf $WORK
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