}

	// If the key is unique for each ciphertext, then it's ok to use a zero
	// IV.
	var iv [aes.BlockSize]byte
	stream := cipher.NewOFB(block, iv[:])

	var out bytes.Buffer

	writer := &cipher.StreamWriter{S: stream, W: &out}
	// Copy the input to the output buffer, encrypting as we go.
	if _, err := io.Copy(writer, bReader); err != nil {
		panic(err)
	}