<?php
namespace ParagonIE\Sapient\UnitTests;
use ParagonIE\Sapient\CryptographyKeys\{
SealingPublicKey,
SealingSecretKey,
SharedEncryptionKey
};
use ParagonIE\Sapient\Simple;
use PHPUnit\Framework\TestCase;
class SimpleTest extends TestCase
{
/**
* @covers Simple::encrypt()
* @covers Simple::decrypt()
*/
public function testEncryptAndDecrypt()
{
$key = SharedEncryptionKey::generate();
$prev = '';
$messages = ['', '', 'Hello, this is a unit test', 'Paragon Initiative Enterprises, LLC'];
foreach ($messages as $message) {
$encrypted = Simple::encrypt($message, $key);
$this->assertNotSame($prev, $encrypted, 'Same message twice');
$this->assertSame(
40 + \ParagonIE_Sodium_Core_Util::strlen($message),
\ParagonIE_Sodium_Core_Util::strlen($encrypted),
'Ciphertext output is too short'
);
$this->assertSame(
$message,
Simple::decrypt($encrypted, $key),
'Incorrect plaintext'
);
$prev = $encrypted;
}
}
/**
* @covers Simple::keyExchange()
*/
public function testKeyExchange()
{
$clientSealSecret = SealingSecretKey::generate();
$clientSealPublic = $clientSealSecret->getPublickey();
$serverSealSecret = SealingSecretKey::generate();
$serverSealPublic = $serverSealSecret->getPublickey();
$left = Simple::keyExchange($clientSealSecret, $serverSealPublic, false);
$right = Simple::keyExchange($serverSealSecret, $clientSealPublic, true);
$this->assertSame($left, $right);
$left = Simple::keyExchange($clientSealSecret, $serverSealPublic, false, 56);
$right = Simple::keyExchange($serverSealSecret, $clientSealPublic, true, 56);
$this->assertSame($left, $right);
$this->assertSame(56, \ParagonIE_Sodium_Core_Util::strlen($left));
$this->assertSame(56, \ParagonIE_Sodium_Core_Util::strlen($right));
}
/**
* @covers Simple::seal()
* @covers Simple::unseal()
*/
public function testSealUnseal()
{
$sealSecret = SealingSecretKey::generate();
/** @var SealingPublicKey $sealPublic */
$sealPublic = $sealSecret->getPublickey();
$messages = [
'',
'',
'Hello, this is a unit test',
'Paragon Initiative Enterprises, LLC',
\random_bytes(\random_int(101, 1000))
];
foreach ($messages as $message) {
$sealed = Simple::seal($message, $sealPublic);
$this->assertSame(
48 + \ParagonIE_Sodium_Core_Util::strlen($message),
\ParagonIE_Sodium_Core_Util::strlen($sealed),
'Ciphertext output is too short'
);
$this->assertSame(
$message,
Simple::unseal($sealed, $sealSecret),
'Incorrect plaintext'
);
}
}
}
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