450 lines
13 KiB
PHP
450 lines
13 KiB
PHP
<?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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namespace OCA_Encryption;
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require_once "PHPUnit/Framework/TestCase.php";
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require_once realpath( dirname(__FILE__).'/../../../lib/base.php' );
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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 = Crypt::generateKey();
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$this->view = new \OC_FilesystemView( '/' );
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\OC_User::setUserId( 'admin' );
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}
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function tearDown(){}
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function testGenerateKey() {
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# TODO: use more accurate (larger) string length for test confirmation
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$key = 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 = Crypt::generateIv();
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$this->assertTrue( strlen( $iv ) == 16 );
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}
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function testEncrypt() {
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$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 = 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 = Crypt::encrypt( $this->dataUrl, $iv, 'hat' );
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$decrypt = 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 = Crypt::symmetricEncryptFileContent( $this->dataShort, 'hat' );
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$this->assertNotEquals( $this->dataShort, $crypted );
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$decrypt = Crypt::symmetricDecryptFileContent( $crypted, 'hat' );
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$this->assertEquals( $this->dataShort, $decrypt );
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}
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function testSymmetricBlockEncryptShortFileContent() {
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$crypted = Crypt::symmetricBlockEncryptFileContent( $this->dataShort, $this->randomKey );
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$this->assertNotEquals( $this->dataShort, $crypted );
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$decrypt = Crypt::symmetricBlockDecryptFileContent( $crypted, $this->randomKey );
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$this->assertEquals( $this->dataShort, $decrypt );
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}
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function testSymmetricBlockEncryptLongFileContent() {
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$crypted = Crypt::symmetricBlockEncryptFileContent( $this->dataLong, $this->randomKey );
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$this->assertNotEquals( $this->dataLong, $crypted );
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$decrypt = Crypt::symmetricBlockDecryptFileContent( $crypted, $this->randomKey );
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$this->assertEquals( $this->dataLong, $decrypt );
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}
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function testSymmetricStreamEncryptShortFileContent() {
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$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( '/admin/files/' . $filename );
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// Manually remove padding from end of each chunk
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$retreivedCryptedFile = substr( $retreivedCryptedFile, 0, -2 );
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// Check that the file was encrypted before being written to disk
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$this->assertNotEquals( $this->dataShort, $retreivedCryptedFile );
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$key = Keymanager::getFileKey( $filename );
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$manualDecrypt = Crypt::symmetricBlockDecryptFileContent( $retreivedCryptedFile, $key );
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$this->assertEquals( $this->dataShort, $manualDecrypt );
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}
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/**
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* @brief Test that data that is written by the crypto stream wrapper
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* @note Encrypted data is manually prepared and decrypted here to avoid dependency on success of stream_read
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*/
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function testSymmetricStreamEncryptLongFileContent() {
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// Generate a a random filename
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$filename = 'tmp-'.time();
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echo "\n\n\$filename = $filename\n\n";
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// Save long data as encrypted file using stream wrapper
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$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( '/admin/files/' . $filename );
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// Check that the file was encrypted before being written to disk
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$this->assertNotEquals( $this->dataLong.$this->dataLong, $retreivedCryptedFile );
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// Get file contents without using any wrapper to get it's actual contents on disk
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$undecrypted = file_get_contents( '/home/samtuke/owncloud/git/oc3/data/admin/files/' . $filename );
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//echo "\n\n\$undecrypted = $undecrypted\n\n";
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// Manuallly split saved file into separate IVs and encrypted chunks
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$r = preg_split('/(00iv00.{16,18})/', $undecrypted, NULL, PREG_SPLIT_DELIM_CAPTURE);
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print_r($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], $r[14] );
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//print_r($e);
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$f = array();
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// Manually remove padding from end of each chunk
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foreach ( $e as $e ) {
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$f[] = substr( $e, 0, -2 );
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}
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// print_r($f);
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// Manually fetch keyfile
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$keyfile = Keymanager::getFileKey( $filename );
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// Set var for reassembling decrypted content
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$decrypt = '';
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// Manually decrypt chunk
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foreach ($f as $f) {
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// echo "\n\$encryptMe = $f";
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$chunkDecrypt = Crypt::symmetricDecryptFileContent( $f, $keyfile );
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// Assemble decrypted chunks
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$decrypt .= $chunkDecrypt;
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//echo "\n\$chunkDecrypt = $chunkDecrypt";
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}
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$this->assertEquals( $this->dataLong.$this->dataLong, $decrypt );
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// Teadown
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$this->view->unlink( '/admin/files/' . $filename );
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Keymanager::deleteFileKey( $filename );
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}
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/**
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* @brief Test that data that is read by the crypto stream wrapper
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* @depends testSymmetricStreamEncryptLongFileContent
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*/
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function testSymmetricStreamDecryptShortFileContent() {
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$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( '/admin/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( '/admin/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 = Crypt::symmetricEncryptFileContentKeyfile( $this->dataUrl );
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$this->assertNotEquals( $this->dataUrl, $crypted['encrypted'] );
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$decrypt = 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( Crypt::isEncryptedContent( $this->dataUrl ) );
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$this->assertFalse( Crypt::isEncryptedContent( $this->legacyEncryptedData ) );
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$keyfileContent = Crypt::symmetricEncryptFileContent( $this->dataUrl, 'hat' );
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$this->assertTrue( 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 = 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 = Crypt::multiKeyEncrypt( $this->dataUrl, array( $pair1['publicKey'] ) );
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$this->assertNotEquals( $this->dataUrl, $crypted['encrypted'] );
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$decrypt = 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 = Crypt::createKeypair();
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// Encrypt data
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$crypted = 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 = 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 = Crypt::createKeypair();
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// Encrypt plain data, generate keyfile & encrypted file
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$cryptedData = Crypt::symmetricEncryptFileContentKeyfile( $this->dataUrl );
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// Encrypt keyfile
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$cryptedKey = Crypt::keyEncrypt( $cryptedData['key'], $pair1['publicKey'] );
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// Decrypt keyfile
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$decryptKey = Crypt::keyDecrypt( $cryptedKey, $pair1['privateKey'] );
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// Decrypt encrypted file
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$decryptData = Crypt::symmetricDecryptFileContent( $cryptedData['encrypted'], $decryptKey );
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$this->assertEquals( $this->dataUrl, $decryptData );
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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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// $encrypted=OC_Crypt::encrypt($source,$key);
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// $decrypted=OC_Crypt::decrypt($encrypted,$key);
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// $decrypted=rtrim($decrypted, "\0");
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// $this->assertNotEquals($encrypted,$source);
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// $this->assertEqual($decrypted,$source);
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//
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// $chunk=substr($source,0,8192);
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// $encrypted=OC_Crypt::encrypt($chunk,$key);
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// $this->assertEqual(strlen($chunk),strlen($encrypted));
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// $decrypted=OC_Crypt::decrypt($encrypted,$key);
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// $decrypted=rtrim($decrypted, "\0");
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// $this->assertEqual($decrypted,$chunk);
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//
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// $encrypted=OC_Crypt::blockEncrypt($source,$key);
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// $decrypted=OC_Crypt::blockDecrypt($encrypted,$key);
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// $this->assertNotEquals($encrypted,$source);
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// $this->assertEqual($decrypted,$source);
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//
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// $tmpFileEncrypted=OCP\Files::tmpFile();
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// OC_Crypt::encryptfile($file,$tmpFileEncrypted,$key);
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// $encrypted=file_get_contents($tmpFileEncrypted);
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// $decrypted=OC_Crypt::blockDecrypt($encrypted,$key);
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// $this->assertNotEquals($encrypted,$source);
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// $this->assertEqual($decrypted,$source);
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//
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// $tmpFileDecrypted=OCP\Files::tmpFile();
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// OC_Crypt::decryptfile($tmpFileEncrypted,$tmpFileDecrypted,$key);
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// $decrypted=file_get_contents($tmpFileDecrypted);
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// $this->assertEqual($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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// $encrypted=OC_Crypt::encrypt($source,$key);
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// $decrypted=OC_Crypt::decrypt($encrypted,$key);
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// $decrypted=rtrim($decrypted, "\0");
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// $this->assertEqual($decrypted,$source);
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//
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// $encrypted=OC_Crypt::blockEncrypt($source,$key);
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// $decrypted=OC_Crypt::blockDecrypt($encrypted,$key);
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// $this->assertEqual($decrypted,$source);
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//
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// }
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//
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// function testBinary(){
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// $key=uniqid();
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//
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// $file=__DIR__.'/binary';
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// $source=file_get_contents($file); //binary file
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// $encrypted=OC_Crypt::encrypt($source,$key);
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// $decrypted=OC_Crypt::decrypt($encrypted,$key);
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//
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// $decrypted=rtrim($decrypted, "\0");
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// $this->assertEqual($decrypted,$source);
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//
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// $encrypted=OC_Crypt::blockEncrypt($source,$key);
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// $decrypted=OC_Crypt::blockDecrypt($encrypted,$key,strlen($source));
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// $this->assertEqual($decrypted,$source);
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// }
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}
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