A local copy of OpenSSL from GitHub
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#! /usr/bin/env perl
# Copyright 2021 The OpenSSL Project Authors. All Rights Reserved.
#
# Licensed under the Apache License 2.0 (the "License"). You may not use
# this file except in compliance with the License. You can obtain a copy
# in the file LICENSE in the source distribution or at
# https://www.openssl.org/source/license.html
use Getopt::Long;
my $activate = 1;
my $conditional_errors = 1;
my $security_checks = 1;
my $mac_key;
my $module_name;
my $section_name = "fips_sect";
GetOptions("key=s" => \$mac_key,
"module=s" => \$module_name,
"section_name=s" => \$section_name)
or die "Error when getting command line arguments";
my $mac_keylen = length($mac_key);
use Digest::SHA qw(hmac_sha256_hex);
my $module_size = [ stat($module_name) ]->[7];
open my $fh, "<:raw", $module_name or die "Trying to open $module_name: $!";
read $fh, my $data, $module_size or die "Trying to read $module_name: $!";
close $fh;
# Calculate HMAC-SHA256 in hex, and split it into a list of two character
# chunks, and join the chunks with colons.
my @module_mac
= ( uc(hmac_sha256_hex($data, pack("H$mac_keylen", $mac_key))) =~ m/../g );
my $module_mac = join(':', @module_mac);
print <<_____;
[$section_name]
activate = $activate
conditional-errors = $conditional_errors
security-checks = $security_checks
module-mac = $module_mac
_____