File: tests/ECDSA/SignatureTest.php

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File: tests/ECDSA/SignatureTest.php
Role: Class source
Content type: text/plain
Description: Class source
Class: Easy PHP ECC
Encrypt, decrypt and sign messages with PHPECC
Author: By
Last change:
Date: 4 days ago
Size: 2,195 bytes
 

Contents

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<?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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