<?php
declare(strict_types=1);
namespace ECDSA;
use FG\ASN1\Exception\ParserException;
use Mdanter\Ecc\Util\BinaryString;
use ParagonIE\EasyECC\EasyECC;
use ParagonIE\EasyECC\ECDSA\PublicKey;
use ParagonIE\EasyECC\ECDSA\SecretKey;
use ParagonIE\EasyECC\Exception\ConfigException;
use ParagonIE\EasyECC\Exception\NotImplementedException;
use PHPUnit\Framework\TestCase;
/**
* Class SignatureTest
* @package ECDSA
*
* @covers \ParagonIE\EasyECC\ECDSA\SecretKey
* @covers \ParagonIE\EasyECC\ECDSA\PublicKey
* @covers \ParagonIE\EasyECC\ECDSA\Signature
*/
class SignatureTest extends TestCase
{
const PUBKEY_SIZES = [
'K256' => 33,
'P256' => 33,
'P384' => 49
];
/**
* @throws NotImplementedException
* @throws ParserException
* @throws ConfigException
* @throws \SodiumException
*/
public function testSign()
{
$msg = 'this is a test message';
foreach (EasyECC::CURVES as $curve) {
if (!array_key_exists($curve, EasyECC::SIGNATURE_SIZES)) {
// Not an ECDSA curve
continue;
}
$sk = SecretKey::generate($curve);
/** @var PublicKey $pk */
$pk = $sk->getPublicKey();
$this->assertInstanceOf(PublicKey::class, $pk);
$this->assertSame(
self::PUBKEY_SIZES[$curve],
BinaryString::length($pk->toString()) >> 1,
'Compressed public keys must be the correct length'
);
$ecc = new EasyECC($curve);
$signature = $ecc->sign($msg, $sk, true);
$this->assertSame(
EasyECC::SIGNATURE_SIZES[$curve],
BinaryString::length($signature) >> 1,
'IEEE-P1363 formatted signatures must be the correct length'
);
$this->assertTrue(
$ecc->verify($msg, $pk, $signature, true),
'ECDSA signature must validate'
);
$this->assertFalse(
$ecc->verify($msg . ' foo', $pk, $signature, true),
'Invalid ECDSA signature must not validate'
);
}
}
}
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