nextcloud/apps/files_encryption/tests/crypt.php

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<?php
/**
* Copyright (c) 2012 Sam Tuke <samtuke@owncloud.com>, and
* Robin Appelman <icewind@owncloud.com>
* This file is licensed under the Affero General Public License version 3 or
* later.
* See the COPYING-README file.
*/
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namespace OCA_Encryption;
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require_once "PHPUnit/Framework/TestCase.php";
require_once realpath( dirname(__FILE__).'/../../../lib/base.php' );
class Test_Crypt extends \PHPUnit_Framework_TestCase {
function setUp() {
// set content for encrypting / decrypting in tests
$this->data = realpath( dirname(__FILE__).'/../lib/crypt.php' );
$this->legacyData = realpath( dirname(__FILE__).'/legacy-text.txt' );
$this->legacyEncryptedData = realpath( dirname(__FILE__).'/legacy-encrypted-text.txt' );
}
function tearDown(){}
function testGenerateKey() {
# TODO: use more accurate (larger) string length for test confirmation
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$key = Crypt::generateKey();
$this->assertTrue( strlen( $key ) > 16 );
}
function testGenerateIv() {
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$iv = Crypt::generateIv();
$this->assertTrue( strlen( $iv ) == 16 );
}
function testEncrypt() {
$random = openssl_random_pseudo_bytes( 13 );
$iv = substr( base64_encode( $random ), 0, -4 ); // i.e. E5IG033j+mRNKrht
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$crypted = Crypt::encrypt( $this->data, $iv, 'hat' );
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$this->assertNotEquals( $this->data, $crypted );
}
function testDecrypt() {
$random = openssl_random_pseudo_bytes( 13 );
$iv = substr( base64_encode( $random ), 0, -4 ); // i.e. E5IG033j+mRNKrht
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$crypted = Crypt::encrypt( $this->data, $iv, 'hat' );
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$decrypt = Crypt::decrypt( $crypted, $iv, 'hat' );
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$this->assertEquals( $this->data, $decrypt );
}
function testSymmetricEncryptFileContent() {
# TODO: search in keyfile for actual content as IV will ensure this test always passes
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$keyfileContent = Crypt::symmetricEncryptFileContent( $this->data, 'hat' );
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$this->assertNotEquals( $this->data, $keyfileContent );
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$decrypt = Crypt::symmetricDecryptFileContent( $keyfileContent, 'hat' );
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$this->assertEquals( $this->data, $decrypt );
}
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function testSymmetricEncryptFileContentKeyfile() {
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# TODO: search in keyfile for actual content as IV will ensure this test always passes
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$crypted = Crypt::symmetricEncryptFileContentKeyfile( $this->data );
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$this->assertNotEquals( $this->data, $crypted['encrypted'] );
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$decrypt = Crypt::symmetricDecryptFileContent( $crypted['encrypted'], $crypted['key'] );
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$this->assertEquals( $this->data, $decrypt );
}
function testIsEncryptedContent() {
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$this->assertFalse( Crypt::isEncryptedContent( $this->data ) );
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$this->assertFalse( Crypt::isEncryptedContent( $this->legacyEncryptedData ) );
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$keyfileContent = Crypt::symmetricEncryptFileContent( $this->data, 'hat' );
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$this->assertTrue( Crypt::isEncryptedContent( $keyfileContent ) );
}
function testMultiKeyEncrypt() {
# TODO: search in keyfile for actual content as IV will ensure this test always passes
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$pair1 = Crypt::createKeypair();
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$this->assertEquals( 2, count( $pair1 ) );
$this->assertTrue( strlen( $pair1['publicKey'] ) > 1 );
$this->assertTrue( strlen( $pair1['privateKey'] ) > 1 );
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$crypted = Crypt::multiKeyEncrypt( $this->data, array( $pair1['publicKey'] ) );
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$this->assertNotEquals( $this->data, $crypted['encrypted'] );
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$decrypt = Crypt::multiKeyDecrypt( $crypted['encrypted'], $crypted['keys'][0], $pair1['privateKey'] );
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$this->assertEquals( $this->data, $decrypt );
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}
function testKeyEncrypt() {
// Generate keypair
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$pair1 = Crypt::createKeypair();
// Encrypt data
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$crypted = Crypt::keyEncrypt( $this->data, $pair1['publicKey'] );
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$this->assertNotEquals( $this->data, $crypted );
// Decrypt data
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$decrypt = Crypt::keyDecrypt( $crypted, $pair1['privateKey'] );
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$this->assertEquals( $this->data, $decrypt );
}
function testKeyEncryptKeyfile() {
# TODO: Don't repeat encryption from previous tests, use PHPUnit test interdependency instead
// Generate keypair
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$pair1 = Crypt::createKeypair();
// Encrypt plain data, generate keyfile & encrypted file
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$cryptedData = Crypt::symmetricEncryptFileContentKeyfile( $this->data );
// Encrypt keyfile
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$cryptedKey = Crypt::keyEncrypt( $cryptedData['key'], $pair1['publicKey'] );
// Decrypt keyfile
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$decryptKey = Crypt::keyDecrypt( $cryptedKey, $pair1['privateKey'] );
// Decrypt encrypted file
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$decryptData = Crypt::symmetricDecryptFileContent( $cryptedData['encrypted'], $decryptKey );
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$this->assertEquals( $this->data, $decryptData );
}
// function testEncryption(){
//
// $key=uniqid();
// $file=OC::$SERVERROOT.'/3rdparty/MDB2.php';
// $source=file_get_contents($file); //nice large text file
// $encrypted=OC_Crypt::encrypt($source,$key);
// $decrypted=OC_Crypt::decrypt($encrypted,$key);
// $decrypted=rtrim($decrypted, "\0");
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// $this->assertNotEquals($encrypted,$source);
// $this->assertEqual($decrypted,$source);
//
// $chunk=substr($source,0,8192);
// $encrypted=OC_Crypt::encrypt($chunk,$key);
// $this->assertEqual(strlen($chunk),strlen($encrypted));
// $decrypted=OC_Crypt::decrypt($encrypted,$key);
// $decrypted=rtrim($decrypted, "\0");
// $this->assertEqual($decrypted,$chunk);
//
// $encrypted=OC_Crypt::blockEncrypt($source,$key);
// $decrypted=OC_Crypt::blockDecrypt($encrypted,$key);
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// $this->assertNotEquals($encrypted,$source);
// $this->assertEqual($decrypted,$source);
//
// $tmpFileEncrypted=OCP\Files::tmpFile();
// OC_Crypt::encryptfile($file,$tmpFileEncrypted,$key);
// $encrypted=file_get_contents($tmpFileEncrypted);
// $decrypted=OC_Crypt::blockDecrypt($encrypted,$key);
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// $this->assertNotEquals($encrypted,$source);
// $this->assertEqual($decrypted,$source);
//
// $tmpFileDecrypted=OCP\Files::tmpFile();
// OC_Crypt::decryptfile($tmpFileEncrypted,$tmpFileDecrypted,$key);
// $decrypted=file_get_contents($tmpFileDecrypted);
// $this->assertEqual($decrypted,$source);
//
// $file=OC::$SERVERROOT.'/core/img/weather-clear.png';
// $source=file_get_contents($file); //binary file
// $encrypted=OC_Crypt::encrypt($source,$key);
// $decrypted=OC_Crypt::decrypt($encrypted,$key);
// $decrypted=rtrim($decrypted, "\0");
// $this->assertEqual($decrypted,$source);
//
// $encrypted=OC_Crypt::blockEncrypt($source,$key);
// $decrypted=OC_Crypt::blockDecrypt($encrypted,$key);
// $this->assertEqual($decrypted,$source);
//
// }
//
// function testBinary(){
// $key=uniqid();
//
// $file=__DIR__.'/binary';
// $source=file_get_contents($file); //binary file
// $encrypted=OC_Crypt::encrypt($source,$key);
// $decrypted=OC_Crypt::decrypt($encrypted,$key);
//
// $decrypted=rtrim($decrypted, "\0");
// $this->assertEqual($decrypted,$source);
//
// $encrypted=OC_Crypt::blockEncrypt($source,$key);
// $decrypted=OC_Crypt::blockDecrypt($encrypted,$key,strlen($source));
// $this->assertEqual($decrypted,$source);
// }
}