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bfd47cd2df
Moved legacy crypto methods from Util into Crypt Added preliminary support for reading legacy encrypted files Added some unit tests
617 lines
18 KiB
PHP
Executable file
617 lines
18 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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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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$this->userId = 'admin';
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$this->pass = 'admin';
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\OC_User::setUserId( $this->userId );
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}
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function tearDown(){}
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function testGenerateKey() {
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# TODO: use more accurate (larger) string length for test confirmation
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$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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echo $iv;
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$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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//echo "\n\n\$retreivedCryptedFile = $retreivedCryptedFile";
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// Check that the file was encrypted before being written to disk
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$this->assertNotEquals( $this->dataShort, $retreivedCryptedFile );
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$key = Encryption\Keymanager::getFileKey( $filename );
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$manualDecrypt = Encryption\Crypt::symmetricBlockDecryptFileContent( $retreivedCryptedFile, $key );
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$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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// */
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// function testSymmetricStreamEncryptLongFileContent() {
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//
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// // Generate a a random filename
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// $filename = 'tmp-'.time();
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//
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// echo "\n\n\$filename = $filename\n\n";
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//
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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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//
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// // Test that data was successfully written
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// $this->assertTrue( is_int( $cryptedFile ) );
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//
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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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//
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// // echo "\n\n\$retreivedCryptedFile = $retreivedCryptedFile\n\n";
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//
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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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//
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// // Manuallly split saved file into separate IVs and encrypted chunks
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// $r = preg_split('/(00iv00.{16,18})/', $retreivedCryptedFile, NULL, PREG_SPLIT_DELIM_CAPTURE);
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//
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// //print_r($r);
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//
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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[11], $r[12].$r[13], $r[14] );
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//
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// //print_r($e);
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//
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// // Manually fetch keyfile
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// $keyfile = Encryption\Keymanager::getFileKey( $filename );
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//
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// // Set var for reassembling decrypted content
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// $decrypt = '';
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//
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// // Manually decrypt chunk
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// foreach ($e as $e) {
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//
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// // echo "\n\$encryptMe = $f";
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//
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// $chunkDecrypt = Encryption\Crypt::symmetricDecryptFileContent( $e, $keyfile );
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//
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// // Assemble decrypted chunks
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// $decrypt .= $chunkDecrypt;
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//
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// //echo "\n\$chunkDecrypt = $chunkDecrypt";
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//
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// }
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//
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// $this->assertEquals( $this->dataLong.$this->dataLong, $decrypt );
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//
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// // Teardown
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//
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// $this->view->unlink( $filename );
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//
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// Encryption\Keymanager::deleteFileKey( $filename );
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//
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// }
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/**
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* @brief Test that data that is read by the crypto stream wrapper
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*/
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function testSymmetricStreamDecryptShortFileContent() {
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$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, $decrypt );
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}
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function testKeyEncryptKeyfile() {
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# TODO: Don't repeat encryption from previous tests, use PHPUnit test interdependency instead
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// Generate keypair
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$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, $decryptData );
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}
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/**
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* @brief test encryption using legacy blowfish method
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*/
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function testLegacyEncryptShort() {
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$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 ) );
|
|
|
|
}
|
|
|
|
/**
|
|
* @brief test decryption using legacy blowfish method
|
|
* @depends testLegacyEncryptLong
|
|
*/
|
|
function testLegacyKeyRecryptKeyfileEncrypt( $crypted ) {
|
|
|
|
$recrypted = Encryption\Crypt::LegacyKeyRecryptKeyfile( $crypted, $this->pass, $this->genPublicKey, $this->pass );
|
|
|
|
$this->assertNotEquals( $this->dataLong, $recrypted['data'] );
|
|
|
|
return $recrypted;
|
|
|
|
# TODO: search inencrypted text for actual content to ensure it
|
|
# genuine transformation
|
|
|
|
}
|
|
|
|
// function testEncryption(){
|
|
//
|
|
// $key=uniqid();
|
|
// $file=OC::$SERVERROOT.'/3rdparty/MDB2.php';
|
|
// $source=file_get_contents($file); //nice large text file
|
|
// $encrypted=OC_Encryption\Crypt::encrypt($source,$key);
|
|
// $decrypted=OC_Encryption\Crypt::decrypt($encrypted,$key);
|
|
// $decrypted=rtrim($decrypted, "\0");
|
|
// $this->assertNotEquals($encrypted,$source);
|
|
// $this->assertEqual($decrypted,$source);
|
|
//
|
|
// $chunk=substr($source,0,8192);
|
|
// $encrypted=OC_Encryption\Crypt::encrypt($chunk,$key);
|
|
// $this->assertEqual(strlen($chunk),strlen($encrypted));
|
|
// $decrypted=OC_Encryption\Crypt::decrypt($encrypted,$key);
|
|
// $decrypted=rtrim($decrypted, "\0");
|
|
// $this->assertEqual($decrypted,$chunk);
|
|
//
|
|
// $encrypted=OC_Encryption\Crypt::blockEncrypt($source,$key);
|
|
// $decrypted=OC_Encryption\Crypt::blockDecrypt($encrypted,$key);
|
|
// $this->assertNotEquals($encrypted,$source);
|
|
// $this->assertEqual($decrypted,$source);
|
|
//
|
|
// $tmpFileEncrypted=OCP\Files::tmpFile();
|
|
// OC_Encryption\Crypt::encryptfile($file,$tmpFileEncrypted,$key);
|
|
// $encrypted=file_get_contents($tmpFileEncrypted);
|
|
// $decrypted=OC_Encryption\Crypt::blockDecrypt($encrypted,$key);
|
|
// $this->assertNotEquals($encrypted,$source);
|
|
// $this->assertEqual($decrypted,$source);
|
|
//
|
|
// $tmpFileDecrypted=OCP\Files::tmpFile();
|
|
// OC_Encryption\Crypt::decryptfile($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
|
|
// $encrypted=OC_Encryption\Crypt::encrypt($source,$key);
|
|
// $decrypted=OC_Encryption\Crypt::decrypt($encrypted,$key);
|
|
// $decrypted=rtrim($decrypted, "\0");
|
|
// $this->assertEqual($decrypted,$source);
|
|
//
|
|
// $encrypted=OC_Encryption\Crypt::blockEncrypt($source,$key);
|
|
// $decrypted=OC_Encryption\Crypt::blockDecrypt($encrypted,$key);
|
|
// $this->assertEqual($decrypted,$source);
|
|
//
|
|
// }
|
|
//
|
|
// function testBinary(){
|
|
// $key=uniqid();
|
|
//
|
|
// $file=__DIR__.'/binary';
|
|
// $source=file_get_contents($file); //binary file
|
|
// $encrypted=OC_Encryption\Crypt::encrypt($source,$key);
|
|
// $decrypted=OC_Encryption\Crypt::decrypt($encrypted,$key);
|
|
//
|
|
// $decrypted=rtrim($decrypted, "\0");
|
|
// $this->assertEqual($decrypted,$source);
|
|
//
|
|
// $encrypted=OC_Encryption\Crypt::blockEncrypt($source,$key);
|
|
// $decrypted=OC_Encryption\Crypt::blockDecrypt($encrypted,$key,strlen($source));
|
|
// $this->assertEqual($decrypted,$source);
|
|
// }
|
|
|
|
}
|