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|
#!/usr/bin/env bash
#
# Generate keypairs.
#
# This script is just a wrapper to easily generate keys for
# automated systems.
#
# Generate a keypair, ssh version
function genkeys_ssh {
echo "Make sure that $KEYDIR is atop of an encrypted volume."
read -p "Hit ENTER to continue." prompt
# We're using empty passphrases
ssh-keygen -t rsa -b 4096 -P '' -f "$TMPWORK/id_rsa" -C "root@$NODE"
# Encrypt the result
echo "Encrypting secret key into keyringer..."
cat "$TMPWORK/id_rsa" | keyringer_exec encrypt "$BASEDIR" "$FILE"
echo "Encrypting public key into keyringer..."
cat "$TMPWORK/id_rsa.pub" | keyringer_exec encrypt "$BASEDIR" "$FILE.pub"
if [ ! -z "$OUTFILE" ]; then
mkdir -p `dirname $OUTFILE`
printf "Saving copies at %s and %s.pub\n" "$OUTFILE" "$OUTFILE"
cat "$TMPWORK/id_rsa" > "$OUTFILE"
cat "$TMPWORK/id_rsa.pub" > "$OUTFILE.pub"
fi
echo "Done"
}
# Generate a keypair, gpg version
function genkeys_gpg {
echo "Make sure that $KEYDIR is atop of an encrypted volume."
#passphrase="no"
#passphrase_confirm="confirm"
#while [ "$passphrase" != "$passphrase_confirm" ]; do
# read -s -p "Enter password for the private key: " passphrase
# printf "\n"
# read -s -p "Enter password again: " passphrase_confirm
# printf "\n"
# if [ "$passphrase" != "$passphrase_confirm" ]; then
# echo "Password don't match."
# fi
#done
keyringer_exec pwgen "$BASEDIR" "$FILE.passwd"
passphrase="`keyringer_exec decrypt "$BASEDIR" "$FILE.passwd"`"
# TODO: insert random bytes
# TODO: custom Name-Comment and Name-Email
$GPG --homedir "$TMPWORK" --gen-key --batch <<EOF
Key-Type: RSA
Key-Length: 4096
Subkey-Type: ELG-E
Subkey-Length: 4096
Name-Real: $NODE
Name-Email: root@$NODE
Expire-Date: 0
Passphrase: $passphrase
%commit
EOF
# Encrypt the result
echo "Encrypting secret key into keyringer..."
$GPG --armor --homedir "$TMPWORK" --export-secret-keys | keyringer_exec encrypt "$BASEDIR" "$FILE"
echo "Encrypting public key into keyringer..."
$GPG --armor --homedir "$TMPWORK" --export | keyringer_exec encrypt "$BASEDIR" "$FILE.pub"
#echo "Encrypting passphrase into keyringer..."
#echo "Passphrase for $FILE: $passphrase" | keyringer_exec encrypt "$BASEDIR" "$FILE.passwd"
if [ ! -z "$OUTFILE" ]; then
mkdir -p `dirname $OUTFILE`
printf "Saving copies at %s and %s.pub\n" "$OUTFILE" "$OUTFILE"
$GPG --armor --homedir "$TMPWORK" --export-secret-keys > "$OUTFILE"
$GPG --armor --homedir "$TMPWORK" --export > "$OUTFILE.pub"
fi
echo "Done"
}
# Alias
function genkeys_ssl {
genkeys_x509 $*
}
# Generate a keypair, ssl version
function genkeys_x509 {
echo "Make sure that $KEYDIR is atop of an encrypted volume."
read -p "Hit ENTER to continue." prompt
# Check for wildcard certs
if [ "`echo $NODE | cut -d . -f 1`" == "*" ]; then
WILDCARD="yes"
CNAME="$NODE"
NODE="`echo $NODE | sed -e 's/^\*\.//'`"
else
CNAME="${NODE}"
fi
# Setup
cd "$TMPWORK"
# Generate certificate
cat <<EOF >> openssl.conf
[ req ]
default_keyfile = ${NODE}_privatekey.pem
distinguished_name = req_distinguished_name
encrypt_key = no
req_extensions = v3_req # Extensions to add to certificate request
string_mask = nombstr
[ req_distinguished_name ]
commonName_default = ${CNAME}
organizationName = Organization Name
organizationalUnitName = Organizational Unit Name
emailAddress = Email Address
localityName = Locality
stateOrProvinceName = State
countryName = Country Name
commonName = Common Name
[ v3_req ]
extendedKeyUsage=serverAuth,clientAuth
EOF
# Add SubjectAltNames so wildcard certs can work correctly.
if [ "$WILDCARD" == "yes" ]; then
cat <<EOF >> openssl.conf
subjectAltName=DNS:${NODE}, DNS:${CNAME}
EOF
fi
echo "Please review your OpenSSL configuration:"
cat openssl.conf
read -p "Hit ENTER to continue." prompt
openssl req -batch -nodes -config openssl.conf -newkey rsa:4096 -sha256 \
-keyout ${NODE}_privatekey.pem -out ${NODE}_csr.pem
openssl req -noout -text -in ${NODE}_csr.pem
# Self-sign
if [ "$KEYTYPE" == "ssl-self" ]; then
openssl x509 -in "${NODE}_csr.pem" -out "$NODE.crt" -req -signkey "${NODE}_privatekey.pem" -days 365
chmod 600 "${NODE}_privatekey.pem"
fi
# Encrypt the result
echo "Encrypting private key into keyringer..."
cat "${NODE}_privatekey.pem" | keyringer_exec encrypt "$BASEDIR" "$FILE.pem"
echo "Encrypting certificate request into keyringer..."
cat "${NODE}_csr.pem" | keyringer_exec encrypt "$BASEDIR" "$FILE.csr"
if [ "$KEYTYPE" == "ssl-self" ]; then
echo "Encrypting certificate into keyringer..."
cat "${NODE}.crt" | keyringer_exec encrypt "$BASEDIR" "$FILE.crt"
elif [ -f "$BASEDIR/keys/$FILE.crt.asc" ]; then
# Remove any existing crt
keyringer_exec del "$BASEDIR" "$FILE.crt"
fi
cd "$CWD"
if [ ! -z "$OUTFILE" ]; then
mkdir -p `dirname $OUTFILE`
printf "Saving copies at %s\n" "`dirname $OUTFILE`"
cat "$TMPWORK/${NODE}_privatekey.pem" > "$OUTFILE.pem"
cat "$TMPWORK/${NODE}_csr.pem" > "$OUTFILE.csr"
if [ -f "$TMPWORK/${NODE}.crt" ]; then
cat "$TMPWORK/${NODE}.crt" > "$OUTFILE.crt"
fi
fi
# Show cert fingerprint
if [ "$KEYTYPE" == "ssl-self" ]; then
openssl x509 -noout -in "$TMPWORK/${NODE}.crt" -fingerprint
fi
echo "Done"
}
# Load functions
LIB="`dirname $0`/../functions"
source "$LIB" write $* || exit 1
# Aditional parameters
KEYTYPE="$2"
FILE="$RELATIVE_PATH/$3"
NODE="$4"
OUTFILE="$5"
CWD="`pwd`"
# Verify
if [ -z "$NODE" ]; then
echo -e "Usage: keyringer <keyring> $BASENAME <gpg|ssh|x509|x509-self|ssl|ssl-self> <file> <hostname> [outfile]"
echo -e "Options:"
echo -e "\t gpg|ssh|x509[-self]|ssl|ssl[-self]: key type."
echo -e "\t file : base file name for encrypted output (relative to keys folder),"
echo -e "\t without spaces"
echo -e "\t hostname : host for the key pair"
echo -e "\t outfile : optional unencrypted output file, useful for deployment,"
echo -e "\t without spaces"
exit 1
elif [ ! -e "$KEYDIR" ]; then
echo "Folder not found: $KEYDIR, leaving"
exit 1
fi
# Set a tmp file
keyringer_set_tmpfile genpair -d
# Dispatch
echo "Generating $KEYTYPE key for $NODE..."
if [ "$KEYTYPE" == "ssl-self" ] || [ "$KEYTYPE" == "x509-self" ]; then
genkeys_x509
else
genkeys_"$KEYTYPE"
fi
# Cleanup
cd "$CWD"
rm -rf "$TMPWORK"
trap - EXIT
|
