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Merge pull request #3407 from philsmd/29600_add_tests

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tests: add unit tests for -m 29600
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Jens Steube 2022-08-02 23:52:23 +02:00 committed by GitHub
commit 7a450779c7
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tools/test_modules/m29600.pm Normal file
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#!/usr/bin/env perl
##
## Author......: See docs/credits.txt
## License.....: MIT
##
use strict;
use warnings;
use MIME::Base64 qw (encode_base64 decode_base64);
use Crypt::CBC;
use Crypt::PBKDF2;
sub module_constraints { [[0, 256], [16, 16], [-1, -1], [-1, -1], [-1, -1]] }
my $ITERATIONS = 100;
sub module_generate_hash
{
my $word = shift;
my $salt = shift;
my $iv = shift;
my $data = shift;
my $pbkdf2 = Crypt::PBKDF2->new
(
hasher => Crypt::PBKDF2->hasher_from_algorithm ('HMACSHA1'),
iterations => $ITERATIONS,
output_len => 32
);
my $key = $pbkdf2->PBKDF2 ($salt, $word);
if (! defined ($iv))
{
$iv = random_bytes (16);
}
my $cipher = Crypt::CBC->new ({
key => $key,
cipher => "Crypt::Rijndael",
iv => $iv,
literal_key => 1,
keysize => 32,
header => "none",
padding => "none",
});
if (! defined ($data))
{
$data = random_hex_string (64);
$data .= "\x10" x 16 # padding block
}
else
{
$data = $cipher->decrypt ($data);
my $padding_block = substr ($data, 64, 16);
if ($padding_block ne "\x10" x 16)
{
$data = "\x00" x 80; # FAKE data (length: 64 + 16)
}
}
my $encrypted_data = $cipher->encrypt ($data);
my $hash = sprintf ("%s%s%s", unpack ("H*", $salt), unpack ("H*", $iv), encode_base64 ($encrypted_data, ""));
return $hash;
}
sub module_verify_hash
{
my $line = shift;
my ($hash, $word) = split (":", $line);
return unless (defined ($hash));
return unless (defined ($word));
return unless (length ($hash) == (32 + 32 + 108));
my $salt = substr ($hash, 0, 32);
my $iv = substr ($hash, 32, 32);
my $data = substr ($hash, 64, 108); # or until the end
return unless ($salt =~ m/^[0-9a-fA-F]{32}$/);
return unless ($iv =~ m/^[0-9a-fA-F]{32}$/);
return unless ($data =~ m/^[A-Za-z0-9+\/=]{108}$/);
$salt = pack ("H*", $salt);
$iv = pack ("H*", $iv);
$data = decode_base64 ($data);
return unless (length ($data) == (64 + 16)); # 80
$word = pack_if_HEX_notation ($word);
my $new_hash = module_generate_hash ($word, $salt, $iv, $data);
return ($new_hash, $word);
}
1;