Swift_Signers_SMimeSigner::toSMimeByteStream PHP Method

    protected function toSMimeByteStream(Swift_InputByteStream $inputStream, Swift_Message $message)
    {
        $mimeEntity = $this->createMessage($message);
        $messageStream = new Swift_ByteStream_TemporaryFileByteStream();
        $mimeEntity->toByteStream($messageStream);
        $messageStream->commit();
        if (null !== $this->signCertificate && null !== $this->encryptCert) {
            $temporaryStream = new Swift_ByteStream_TemporaryFileByteStream();
            if ($this->signThenEncrypt) {
                $this->messageStreamToSignedByteStream($messageStream, $temporaryStream);
                $this->messageStreamToEncryptedByteStream($temporaryStream, $inputStream);
            } else {
                $this->messageStreamToEncryptedByteStream($messageStream, $temporaryStream);
                $this->messageStreamToSignedByteStream($temporaryStream, $inputStream);
            }
        } elseif ($this->signCertificate !== null) {
            $this->messageStreamToSignedByteStream($messageStream, $inputStream);
        } else {
            $this->messageStreamToEncryptedByteStream($messageStream, $inputStream);
        }
    }