wubbajack / filecrypt

     *

     * @return void

     */

    protected function encryptFile($source_file, $target_file, $iv)

    {

        // We start by setting up both the source and target streams

        // and applying all the necessary stream filters for encryption.

        $source  = fopen($source_file, 'r');

        $target  = $this->createEncryptionStream($target_file, $this->getOptions($iv));

        // We copy the source into the target stream, passing through the encryption filter

        $this->copyStream($source, $target);

        // Close the source file and target files

        fclose($source);

        fclose($target);

    }

    /**

     * Decrypts a source file into a target file

     *

     * @return void

     */

    protected function decryptFile($source, $target, $iv, $padding = 0)

    {

        // We create a stream with a decryption filter appended to it

        $source = $this->createDecryptionStream($source, $this->getOptions($iv));

        $target = fopen($target, 'w+');

        // We copy the source into the target, decrypting it in the process

        $this->copyStream($source, $target, $padding);

        // Close both source and target

        fclose($source);

        fclose($target);

    }

    /**

     * Creates a stream that encrypts when written to