PHP ParagonIE\Halite File::encrypt Examples

encrypt() public static method

Encrypt a file using symmetric authenticated encryption.

public static encrypt ( string | resource $input, string | resource $output, EncryptionKey $key ) : integer
$input	string | resource	File name or file handle
$output	string | resource	File name or file handle
$key	EncryptionKey	Symmetric encryption key
return	integer	Number of bytes written

Example #1

File: FileLazyTest.php Project: TheFrozenFire/halite

 public function testEncryptFail()
 {
     \touch(__DIR__ . '/tmp/paragon_avatar.encrypt_fail.png');
     \chmod(__DIR__ . '/tmp/paragon_avatar.encrypt_fail.png', 0777);
     \touch(__DIR__ . '/tmp/paragon_avatar.decrypt_fail.png');
     \chmod(__DIR__ . '/tmp/paragon_avatar.decrypt_fail.png', 0777);
     $key = new EncryptionKey(\str_repeat('B', 32));
     File::encrypt(__DIR__ . '/tmp/paragon_avatar.png', __DIR__ . '/tmp/paragon_avatar.encrypt_fail.png', $key);
     $fp = \fopen(__DIR__ . '/tmp/paragon_avatar.encrypt_fail.png', 'ab');
     \fwrite($fp, \Sodium\randombytes_buf(1));
     fclose($fp);
     try {
         File::decrypt(__DIR__ . '/tmp/paragon_avatar.encrypt_fail.png', __DIR__ . '/tmp/paragon_avatar.decrypt_fail.png', $key);
         $this->fail('Possible authentication bypass in File::decrypt()!');
     } catch (CryptoException\InvalidMessage $e) {
         $this->assertTrue($e instanceof CryptoException\InvalidMessage);
     }
 }

Example #2

File: FileTest.php Project: paragonie/halite

 /**
  * @covers File::encrypt()
  * @covers File::decrypt()
  */
 public function testEncryptFail()
 {
     \touch(__DIR__ . '/tmp/paragon_avatar.encrypt_fail.png');
     \chmod(__DIR__ . '/tmp/paragon_avatar.encrypt_fail.png', 0777);
     \touch(__DIR__ . '/tmp/paragon_avatar.decrypt_fail.png');
     \chmod(__DIR__ . '/tmp/paragon_avatar.decrypt_fail.png', 0777);
     $key = new EncryptionKey(new HiddenString(\str_repeat('B', 32)));
     File::encrypt(__DIR__ . '/tmp/paragon_avatar.png', __DIR__ . '/tmp/paragon_avatar.encrypt_fail.png', $key);
     $fp = \fopen(__DIR__ . '/tmp/paragon_avatar.encrypt_fail.png', 'ab');
     \fwrite($fp, \Sodium\randombytes_buf(1));
     fclose($fp);
     try {
         File::decrypt(__DIR__ . '/tmp/paragon_avatar.encrypt_fail.png', __DIR__ . '/tmp/paragon_avatar.decrypt_fail.png', $key);
         $this->fail('This should have thrown an InvalidMessage exception!');
     } catch (CryptoException\InvalidMessage $e) {
         $this->assertTrue($e instanceof CryptoException\InvalidMessage);
         \unlink(__DIR__ . '/tmp/paragon_avatar.encrypt_fail.png');
         \unlink(__DIR__ . '/tmp/paragon_avatar.decrypt_fail.png');
     }
 }