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#! /usr/bin/env perl
# Copyright 2019 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
#Convert CCM CAVS test vectors to a format suitable for evp_test
use strict;
use warnings;
my $alg;
my $mode;
my $keylen;
my $key = "";
my $iv = "";
my $aad = "";
my $ct = "";
my $pt = "";
my $tag = "";
my $aadlen = 0;
my $ptlen = 0;
my $taglen = 0;
my $res = "";
my $intest = 0;
my $fixediv = 0;
while (<STDIN>)
{
chomp;
# Pull out the cipher mode from the comment at the beginning of the file
if(/^#\s*"([^-]+)-\w+" information/) {
$mode = lc($1);
# Pull out the key length from the comment at the beginning of the file
} elsif(/^#\s*(\w+) Keylen: (\d+)/) {
$alg = lc($1);
$keylen = $2;
# Some parameters common to many tests appear as a list in square brackets
# so parse these
} elsif(/\[(.*)\]/) {
my @pairs = split(/, /, $1);
foreach my $pair (@pairs) {
$pair =~ /(\w+)\s*=\s*(\d+)/;
# AAD Length
if ($1 eq "Alen") {
$aadlen = $2;
# Plaintext length
} elsif ($1 eq "Plen") {
$ptlen = $2;
# Tag length
} elsif ($1 eq "Tlen") {
$taglen = $2;
}
}
# Key/Value pair
} elsif (/^\s*(\w+)\s*=\s*(\S.*)\r/) {
if ($1 eq "Key") {
$key = $2;
} elsif ($1 eq "Nonce") {
$iv = $2;
if ($intest == 0) {
$fixediv = 1;
} else {
$fixediv = 0;
}
} elsif ($1 eq "Adata") {
$aad = $2;
} elsif ($1 eq "CT") {
$ct = substr($2, 0, length($2) - ($taglen * 2));
$tag = substr($2, $taglen * -2);
} elsif ($1 eq "Payload") {
$pt = $2;
} elsif ($1 eq "Result") {
if ($2 =~ /Fail/) {
$res = "CIPHERUPDATE_ERROR";
}
} elsif ($1 eq "Count") {
$intest = 1;
} elsif ($1 eq "Plen") {
$ptlen = $2;
} elsif ($1 eq "Tlen") {
$taglen = $2;
} elsif ($1 eq "Alen") {
$aadlen = $2;
}
# Something else - probably just a blank line
} elsif ($intest) {
print "Cipher = $alg-$keylen-$mode\n";
print "Key = $key\n";
print "IV = $iv\n";
print "AAD =";
if ($aadlen > 0) {
print " $aad";
}
print "\nTag =";
if ($taglen > 0) {
print " $tag";
}
print "\nPlaintext =";
if ($ptlen > 0) {
print " $pt";
}
print "\nCiphertext = $ct\n";
if ($res ne "") {
print "Operation = DECRYPT\n";
print "Result = $res\n";
}
print "\n";
$res = "";
if ($fixediv == 0) {
$iv = "";
}
$aad = "";
$tag = "";
$pt = "";
$intest = 0;
}
}
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