668 lines
20 KiB
PHP
Executable File
668 lines
20 KiB
PHP
Executable File
<?php
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/**
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* Copyright (c) 2012 Sam Tuke <samtuke@owncloud.com>, and
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* Robin Appelman <icewind@owncloud.com>
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* This file is licensed under the Affero General Public License version 3 or
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* later.
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* See the COPYING-README file.
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*/
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//require_once "PHPUnit/Framework/TestCase.php";
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require_once realpath( dirname(__FILE__).'/../../../3rdparty/Crypt_Blowfish/Blowfish.php' );
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require_once realpath( dirname(__FILE__).'/../../../lib/base.php' );
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require_once realpath( dirname(__FILE__).'/../lib/crypt.php' );
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require_once realpath( dirname(__FILE__).'/../lib/keymanager.php' );
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require_once realpath( dirname(__FILE__).'/../lib/proxy.php' );
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require_once realpath( dirname(__FILE__).'/../lib/stream.php' );
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require_once realpath( dirname(__FILE__).'/../lib/util.php' );
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require_once realpath( dirname(__FILE__).'/../appinfo/app.php' );
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use OCA\Encryption;
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// This has to go here because otherwise session errors arise, and the private
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// encryption key needs to be saved in the session
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\OC_User::login( 'admin', 'admin' );
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/**
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* @note It would be better to use Mockery here for mocking out the session
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* handling process, and isolate calls to session class and data from the unit
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* tests relating to them (stream etc.). However getting mockery to work and
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* overload classes whilst also using the OC autoloader is difficult due to
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* load order Pear errors.
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*/
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class Test_Crypt extends \PHPUnit_Framework_TestCase {
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function setUp() {
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// set content for encrypting / decrypting in tests
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$this->dataLong = file_get_contents( realpath( dirname(__FILE__).'/../lib/crypt.php' ) );
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$this->dataShort = 'hats';
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$this->dataUrl = realpath( dirname(__FILE__).'/../lib/crypt.php' );
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$this->legacyData = realpath( dirname(__FILE__).'/legacy-text.txt' );
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$this->legacyEncryptedData = realpath( dirname(__FILE__).'/legacy-encrypted-text.txt' );
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$this->randomKey = Encryption\Crypt::generateKey();
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$keypair = Encryption\Crypt::createKeypair();
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$this->genPublicKey = $keypair['publicKey'];
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$this->genPrivateKey = $keypair['privateKey'];
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$this->view = new \OC_FilesystemView( '/' );
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\OC_User::setUserId( 'admin' );
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$this->userId = 'admin';
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$this->pass = 'admin';
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\OC_Filesystem::init( '/' );
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\OC_Filesystem::mount( 'OC_Filestorage_Local', array('datadir' => \OC_User::getHome($this->userId)), '/' );
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}
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function tearDown() {
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}
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function testGenerateKey() {
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# TODO: use more accurate (larger) string length for test confirmation
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$key = Encryption\Crypt::generateKey();
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$this->assertTrue( strlen( $key ) > 16 );
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}
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function testGenerateIv() {
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$iv = Encryption\Crypt::generateIv();
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$this->assertEquals( 16, strlen( $iv ) );
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return $iv;
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}
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/**
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* @depends testGenerateIv
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*/
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function testConcatIv( $iv ) {
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$catFile = Encryption\Crypt::concatIv( $this->dataLong, $iv );
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// Fetch encryption metadata from end of file
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$meta = substr( $catFile, -22 );
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$identifier = substr( $meta, 0, 6);
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// Fetch IV from end of file
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$foundIv = substr( $meta, 6 );
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$this->assertEquals( '00iv00', $identifier );
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$this->assertEquals( $iv, $foundIv );
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// Remove IV and IV identifier text to expose encrypted content
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$data = substr( $catFile, 0, -22 );
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$this->assertEquals( $this->dataLong, $data );
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return array(
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'iv' => $iv
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, 'catfile' => $catFile
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);
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}
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/**
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* @depends testConcatIv
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*/
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function testSplitIv( $testConcatIv ) {
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// Split catfile into components
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$splitCatfile = Encryption\Crypt::splitIv( $testConcatIv['catfile'] );
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// Check that original IV and split IV match
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$this->assertEquals( $testConcatIv['iv'], $splitCatfile['iv'] );
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// Check that original data and split data match
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$this->assertEquals( $this->dataLong, $splitCatfile['encrypted'] );
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}
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function testAddPadding() {
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$padded = Encryption\Crypt::addPadding( $this->dataLong );
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$padding = substr( $padded, -2 );
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$this->assertEquals( 'xx' , $padding );
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return $padded;
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}
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/**
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* @depends testAddPadding
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*/
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function testRemovePadding( $padded ) {
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$noPadding = Encryption\Crypt::RemovePadding( $padded );
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$this->assertEquals( $this->dataLong, $noPadding );
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}
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function testEncrypt() {
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$random = openssl_random_pseudo_bytes( 13 );
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$iv = substr( base64_encode( $random ), 0, -4 ); // i.e. E5IG033j+mRNKrht
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$crypted = Encryption\Crypt::encrypt( $this->dataUrl, $iv, 'hat' );
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$this->assertNotEquals( $this->dataUrl, $crypted );
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}
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function testDecrypt() {
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$random = openssl_random_pseudo_bytes( 13 );
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$iv = substr( base64_encode( $random ), 0, -4 ); // i.e. E5IG033j+mRNKrht
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$crypted = Encryption\Crypt::encrypt( $this->dataUrl, $iv, 'hat' );
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$decrypt = Encryption\Crypt::decrypt( $crypted, $iv, 'hat' );
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$this->assertEquals( $this->dataUrl, $decrypt );
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}
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function testSymmetricEncryptFileContent() {
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# TODO: search in keyfile for actual content as IV will ensure this test always passes
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$crypted = Encryption\Crypt::symmetricEncryptFileContent( $this->dataShort, 'hat' );
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$this->assertNotEquals( $this->dataShort, $crypted );
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$decrypt = Encryption\Crypt::symmetricDecryptFileContent( $crypted, 'hat' );
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$this->assertEquals( $this->dataShort, $decrypt );
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}
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// These aren't used for now
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// function testSymmetricBlockEncryptShortFileContent() {
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//
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// $crypted = Encryption\Crypt::symmetricBlockEncryptFileContent( $this->dataShort, $this->randomKey );
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//
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// $this->assertNotEquals( $this->dataShort, $crypted );
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//
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//
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// $decrypt = Encryption\Crypt::symmetricBlockDecryptFileContent( $crypted, $this->randomKey );
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//
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// $this->assertEquals( $this->dataShort, $decrypt );
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//
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// }
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//
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// function testSymmetricBlockEncryptLongFileContent() {
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//
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// $crypted = Encryption\Crypt::symmetricBlockEncryptFileContent( $this->dataLong, $this->randomKey );
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//
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// $this->assertNotEquals( $this->dataLong, $crypted );
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//
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//
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// $decrypt = Encryption\Crypt::symmetricBlockDecryptFileContent( $crypted, $this->randomKey );
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//
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// $this->assertEquals( $this->dataLong, $decrypt );
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//
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// }
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function testSymmetricStreamEncryptShortFileContent() {
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$filename = 'tmp-'.time();
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$cryptedFile = file_put_contents( 'crypt://' . $filename, $this->dataShort );
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// Test that data was successfully written
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$this->assertTrue( is_int( $cryptedFile ) );
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// Get file contents without using any wrapper to get it's actual contents on disk
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$retreivedCryptedFile = $this->view->file_get_contents( $this->userId . '/files/' . $filename );
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// Check that the file was encrypted before being written to disk
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$this->assertNotEquals( $this->dataShort, $retreivedCryptedFile );
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// Get private key
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$encryptedPrivateKey = Encryption\Keymanager::getPrivateKey( $this->view, $this->userId );
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$decryptedPrivateKey = Encryption\Crypt::symmetricDecryptFileContent( $encryptedPrivateKey, $this->pass );
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// Get keyfile
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$encryptedKeyfile = Encryption\Keymanager::getFileKey( $this->view, $this->userId, $filename );
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$decryptedKeyfile = Encryption\Crypt::keyDecrypt( $encryptedKeyfile, $decryptedPrivateKey );
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// Manually decrypt
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$manualDecrypt = Encryption\Crypt::symmetricBlockDecryptFileContent( $retreivedCryptedFile, $decryptedKeyfile );
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// Check that decrypted data matches
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$this->assertEquals( $this->dataShort, $manualDecrypt );
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}
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/**
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* @brief Test that data that is written by the crypto stream wrapper
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* @note Encrypted data is manually prepared and decrypted here to avoid dependency on success of stream_read
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* @note If this test fails with truncate content, check that enough array slices are being rejoined to form $e, as the crypt.php file may have gotten longer and broken the manual
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* reassembly of its data
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*/
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function testSymmetricStreamEncryptLongFileContent() {
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// Generate a a random filename
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$filename = 'tmp-'.time();
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// Save long data as encrypted file using stream wrapper
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$cryptedFile = file_put_contents( 'crypt://' . $filename, $this->dataLong.$this->dataLong );
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// Test that data was successfully written
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$this->assertTrue( is_int( $cryptedFile ) );
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// Get file contents without using any wrapper to get it's actual contents on disk
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$retreivedCryptedFile = $this->view->file_get_contents( $this->userId . '/files/' . $filename );
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// echo "\n\n\$retreivedCryptedFile = $retreivedCryptedFile\n\n";
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// Check that the file was encrypted before being written to disk
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$this->assertNotEquals( $this->dataLong.$this->dataLong, $retreivedCryptedFile );
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// Manuallly split saved file into separate IVs and encrypted chunks
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$r = preg_split('/(00iv00.{16,18})/', $retreivedCryptedFile, NULL, PREG_SPLIT_DELIM_CAPTURE);
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//print_r($r);
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// Join IVs and their respective data chunks
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$e = array( $r[0].$r[1], $r[2].$r[3], $r[4].$r[5], $r[6].$r[7], $r[8].$r[9], $r[10].$r[11], $r[12].$r[13] );//.$r[11], $r[12].$r[13], $r[14] );
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//print_r($e);
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// Get private key
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$encryptedPrivateKey = Encryption\Keymanager::getPrivateKey( $this->view, $this->userId );
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$decryptedPrivateKey = Encryption\Crypt::symmetricDecryptFileContent( $encryptedPrivateKey, $this->pass );
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// Get keyfile
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$encryptedKeyfile = Encryption\Keymanager::getFileKey( $this->view, $this->userId, $filename );
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$decryptedKeyfile = Encryption\Crypt::keyDecrypt( $encryptedKeyfile, $decryptedPrivateKey );
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// Set var for reassembling decrypted content
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$decrypt = '';
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// Manually decrypt chunk
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foreach ($e as $e) {
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// echo "\n\$e = $e";
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$chunkDecrypt = Encryption\Crypt::symmetricDecryptFileContent( $e, $decryptedKeyfile );
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// Assemble decrypted chunks
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$decrypt .= $chunkDecrypt;
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// echo "\n\$chunkDecrypt = $chunkDecrypt";
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}
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// echo "\n\$decrypt = $decrypt";
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$this->assertEquals( $this->dataLong.$this->dataLong, $decrypt );
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// Teardown
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$this->view->unlink( $filename );
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Encryption\Keymanager::deleteFileKey( $filename );
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}
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/**
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* @brief Test that data that is read by the crypto stream wrapper
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*/
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function testSymmetricStreamDecryptShortFileContent() {
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$filename = 'tmp-'.time();
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// Save long data as encrypted file using stream wrapper
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$cryptedFile = file_put_contents( 'crypt://' . $filename, $this->dataShort );
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// Test that data was successfully written
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$this->assertTrue( is_int( $cryptedFile ) );
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// Get file contents without using any wrapper to get it's actual contents on disk
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$retreivedCryptedFile = $this->view->file_get_contents( $this->userId . '/files/' . $filename );
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$decrypt = file_get_contents( 'crypt://' . $filename );
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$this->assertEquals( $this->dataShort, $decrypt );
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}
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function testSymmetricStreamDecryptLongFileContent() {
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$filename = 'tmp-'.time();
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// Save long data as encrypted file using stream wrapper
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$cryptedFile = file_put_contents( 'crypt://' . $filename, $this->dataLong );
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// Test that data was successfully written
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$this->assertTrue( is_int( $cryptedFile ) );
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// Get file contents without using any wrapper to get it's actual contents on disk
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$retreivedCryptedFile = $this->view->file_get_contents( $this->userId . '/files/' . $filename );
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$decrypt = file_get_contents( 'crypt://' . $filename );
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$this->assertEquals( $this->dataLong, $decrypt );
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}
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// Is this test still necessary?
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// function testSymmetricBlockStreamDecryptFileContent() {
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//
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// \OC_User::setUserId( 'admin' );
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//
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// // Disable encryption proxy to prevent unwanted en/decryption
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// \OC_FileProxy::$enabled = false;
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//
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// $cryptedFile = file_put_contents( 'crypt://' . '/blockEncrypt', $this->dataUrl );
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//
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// // Disable encryption proxy to prevent unwanted en/decryption
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// \OC_FileProxy::$enabled = false;
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//
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// echo "\n\n\$cryptedFile = " . $this->view->file_get_contents( '/blockEncrypt' );
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//
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// $retreivedCryptedFile = file_get_contents( 'crypt://' . '/blockEncrypt' );
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//
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// $this->assertEquals( $this->dataUrl, $retreivedCryptedFile );
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//
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// \OC_FileProxy::$enabled = false;
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//
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// }
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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 = Encryption\Crypt::symmetricEncryptFileContentKeyfile( $this->dataUrl );
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$this->assertNotEquals( $this->dataUrl, $crypted['encrypted'] );
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$decrypt = Encryption\Crypt::symmetricDecryptFileContent( $crypted['encrypted'], $crypted['key'] );
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$this->assertEquals( $this->dataUrl, $decrypt );
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}
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function testIsEncryptedContent() {
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$this->assertFalse( Encryption\Crypt::isEncryptedContent( $this->dataUrl ) );
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$this->assertFalse( Encryption\Crypt::isEncryptedContent( $this->legacyEncryptedData ) );
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$keyfileContent = Encryption\Crypt::symmetricEncryptFileContent( $this->dataUrl, 'hat' );
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$this->assertTrue( Encryption\Crypt::isEncryptedContent( $keyfileContent ) );
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}
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function testMultiKeyEncrypt() {
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# TODO: search in keyfile for actual content as IV will ensure this test always passes
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$pair1 = Encryption\Crypt::createKeypair();
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$this->assertEquals( 2, count( $pair1 ) );
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$this->assertTrue( strlen( $pair1['publicKey'] ) > 1 );
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$this->assertTrue( strlen( $pair1['privateKey'] ) > 1 );
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$crypted = Encryption\Crypt::multiKeyEncrypt( $this->dataUrl, array( $pair1['publicKey'] ) );
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$this->assertNotEquals( $this->dataUrl, $crypted['encrypted'] );
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$decrypt = Encryption\Crypt::multiKeyDecrypt( $crypted['encrypted'], $crypted['keys'][0], $pair1['privateKey'] );
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$this->assertEquals( $this->dataUrl, $decrypt );
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}
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function testKeyEncrypt() {
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// Generate keypair
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$pair1 = Encryption\Crypt::createKeypair();
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// Encrypt data
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$crypted = Encryption\Crypt::keyEncrypt( $this->dataUrl, $pair1['publicKey'] );
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$this->assertNotEquals( $this->dataUrl, $crypted );
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// Decrypt data
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$decrypt = Encryption\Crypt::keyDecrypt( $crypted, $pair1['privateKey'] );
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$this->assertEquals( $this->dataUrl, $decrypt );
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}
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// What is the point of this test? It doesn't use keyEncryptKeyfile()
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function testKeyEncryptKeyfile() {
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# TODO: Don't repeat encryption from previous tests, use PHPUnit test interdependency instead
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// Generate keypair
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$pair1 = Encryption\Crypt::createKeypair();
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// Encrypt plain data, generate keyfile & encrypted file
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$cryptedData = Encryption\Crypt::symmetricEncryptFileContentKeyfile( $this->dataUrl );
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// Encrypt keyfile
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$cryptedKey = Encryption\Crypt::keyEncrypt( $cryptedData['key'], $pair1['publicKey'] );
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// Decrypt keyfile
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$decryptKey = Encryption\Crypt::keyDecrypt( $cryptedKey, $pair1['privateKey'] );
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// Decrypt encrypted file
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$decryptData = Encryption\Crypt::symmetricDecryptFileContent( $cryptedData['encrypted'], $decryptKey );
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$this->assertEquals( $this->dataUrl, $decryptData );
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}
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/**
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* @brief test functionality of keyEncryptKeyfile() and
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* keyDecryptKeyfile()
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*/
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function testKeyDecryptKeyfile() {
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$encrypted = Encryption\Crypt::keyEncryptKeyfile( $this->dataShort, $this->genPublicKey );
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$this->assertNotEquals( $encrypted['data'], $this->dataShort );
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$decrypted = Encryption\Crypt::keyDecryptKeyfile( $encrypted['data'], $encrypted['key'], $this->genPrivateKey );
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$this->assertEquals( $decrypted, $this->dataShort );
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}
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/**
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* @brief test encryption using legacy blowfish method
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*/
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function testLegacyEncryptShort() {
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$crypted = Encryption\Crypt::legacyEncrypt( $this->dataShort, $this->pass );
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$this->assertNotEquals( $this->dataShort, $crypted );
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# TODO: search inencrypted text for actual content to ensure it
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# genuine transformation
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return $crypted;
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}
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/**
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* @brief test decryption using legacy blowfish method
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* @depends testLegacyEncryptShort
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*/
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function testLegacyDecryptShort( $crypted ) {
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$decrypted = Encryption\Crypt::legacyDecrypt( $crypted, $this->pass );
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$this->assertEquals( $this->dataShort, $decrypted );
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}
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/**
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* @brief test encryption using legacy blowfish method
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*/
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function testLegacyEncryptLong() {
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$crypted = Encryption\Crypt::legacyEncrypt( $this->dataLong, $this->pass );
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$this->assertNotEquals( $this->dataLong, $crypted );
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# TODO: search inencrypted text for actual content to ensure it
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# genuine transformation
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return $crypted;
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}
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/**
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* @brief test decryption using legacy blowfish method
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* @depends testLegacyEncryptLong
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*/
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function testLegacyDecryptLong( $crypted ) {
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$decrypted = Encryption\Crypt::legacyDecrypt( $crypted, $this->pass );
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$this->assertEquals( $this->dataLong, $decrypted );
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}
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/**
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* @brief test generation of legacy encryption key
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* @depends testLegacyDecryptShort
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*/
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function testLegacyCreateKey() {
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// Create encrypted key
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$encKey = Encryption\Crypt::legacyCreateKey( $this->pass );
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// Decrypt key
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$key = Encryption\Crypt::legacyDecrypt( $encKey, $this->pass );
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$this->assertTrue( is_numeric( $key ) );
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// Check that key is correct length
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$this->assertEquals( 20, strlen( $key ) );
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}
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/**
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* @brief test decryption using legacy blowfish method
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* @depends testLegacyEncryptLong
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*/
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function testLegacyKeyRecryptKeyfileEncrypt( $crypted ) {
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$recrypted = Encryption\Crypt::LegacyKeyRecryptKeyfile( $crypted, $this->pass, $this->genPublicKey, $this->pass );
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$this->assertNotEquals( $this->dataLong, $recrypted['data'] );
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return $recrypted;
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# TODO: search inencrypted text for actual content to ensure it
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# genuine transformation
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}
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// function testEncryption(){
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//
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// $key=uniqid();
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// $file=OC::$SERVERROOT.'/3rdparty/MDB2.php';
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// $source=file_get_contents($file); //nice large text file
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// $encrypted=OC_Encryption\Crypt::encrypt($source,$key);
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// $decrypted=OC_Encryption\Crypt::decrypt($encrypted,$key);
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// $decrypted=rtrim($decrypted, "\0");
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// $this->assertNotEquals($encrypted,$source);
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// $this->assertEquals($decrypted,$source);
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//
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// $chunk=substr($source,0,8192);
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// $encrypted=OC_Encryption\Crypt::encrypt($chunk,$key);
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// $this->assertEquals(strlen($chunk),strlen($encrypted));
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// $decrypted=OC_Encryption\Crypt::decrypt($encrypted,$key);
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// $decrypted=rtrim($decrypted, "\0");
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// $this->assertEquals($decrypted,$chunk);
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//
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// $encrypted=OC_Encryption\Crypt::blockEncrypt($source,$key);
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// $decrypted=OC_Encryption\Crypt::blockDecrypt($encrypted,$key);
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// $this->assertNotEquals($encrypted,$source);
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// $this->assertEquals($decrypted,$source);
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//
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// $tmpFileEncrypted=OCP\Files::tmpFile();
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// OC_Encryption\Crypt::encryptfile($file,$tmpFileEncrypted,$key);
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// $encrypted=file_get_contents($tmpFileEncrypted);
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// $decrypted=OC_Encryption\Crypt::blockDecrypt($encrypted,$key);
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// $this->assertNotEquals($encrypted,$source);
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// $this->assertEquals($decrypted,$source);
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//
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// $tmpFileDecrypted=OCP\Files::tmpFile();
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// OC_Encryption\Crypt::decryptfile($tmpFileEncrypted,$tmpFileDecrypted,$key);
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// $decrypted=file_get_contents($tmpFileDecrypted);
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// $this->assertEquals($decrypted,$source);
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//
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// $file=OC::$SERVERROOT.'/core/img/weather-clear.png';
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// $source=file_get_contents($file); //binary file
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// $encrypted=OC_Encryption\Crypt::encrypt($source,$key);
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// $decrypted=OC_Encryption\Crypt::decrypt($encrypted,$key);
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// $decrypted=rtrim($decrypted, "\0");
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// $this->assertEquals($decrypted,$source);
|
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//
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// $encrypted=OC_Encryption\Crypt::blockEncrypt($source,$key);
|
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// $decrypted=OC_Encryption\Crypt::blockDecrypt($encrypted,$key);
|
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// $this->assertEquals($decrypted,$source);
|
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//
|
|
// }
|
|
//
|
|
// function testBinary(){
|
|
// $key=uniqid();
|
|
//
|
|
// $file=__DIR__.'/binary';
|
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// $source=file_get_contents($file); //binary file
|
|
// $encrypted=OC_Encryption\Crypt::encrypt($source,$key);
|
|
// $decrypted=OC_Encryption\Crypt::decrypt($encrypted,$key);
|
|
//
|
|
// $decrypted=rtrim($decrypted, "\0");
|
|
// $this->assertEquals($decrypted,$source);
|
|
//
|
|
// $encrypted=OC_Encryption\Crypt::blockEncrypt($source,$key);
|
|
// $decrypted=OC_Encryption\Crypt::blockDecrypt($encrypted,$key,strlen($source));
|
|
// $this->assertEquals($decrypted,$source);
|
|
// }
|
|
|
|
}
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