Server : Apache/2.4.6 (CentOS) OpenSSL/1.0.2k-fips PHP/7.4.20 System : Linux st2.domain.com 3.10.0-1127.10.1.el7.x86_64 #1 SMP Wed Jun 3 14:28:03 UTC 2020 x86_64 User : apache ( 48) PHP Version : 7.4.20 Disable Function : NONE Directory : /usr/lib/dracut/modules.d/91crypt-gpg/ |
#!/bin/sh
# -*- mode: shell-script; indent-tabs-mode: nil; sh-basic-offset: 4; -*-
# ex: ts=4 sw=4 sts=0 et filetype=sh
command -v ask_for_password >/dev/null || . /lib/dracut-crypt-lib.sh
# gpg_decrypt mnt_point keypath keydev device
#
# Decrypts encrypted symmetrically key to standard output.
#
# mnt_point - mount point where <keydev> is already mounted
# keypath - GPG encrypted key path relative to <mnt_point>
# keydev - device on which key resides; only to display in prompt
# device - device to be opened by cryptsetup; only to display in prompt
gpg_decrypt() {
local mntp="$1"
local keypath="$2"
local keydev="$3"
local device="$4"
local gpghome=/tmp/gnupg
local opts="--homedir $gpghome --no-mdc-warning --skip-verify --quiet"
opts="$opts --logger-file /dev/null --batch --no-tty --passphrase-fd 0"
mkdir -m 0700 -p "$gpghome"
ask_for_password \
--cmd "gpg $opts --decrypt $mntp/$keypath" \
--prompt "Password ($keypath on $keydev for $device)" \
--tries 3 --tty-echo-off
rm -rf -- "$gpghome"
}