java - 如何将 BigInteger 作为字节存储到文件中？

Question

如何将 BigInteger Ca 的字节值存储到文本文件中？示例代码:

BigInteger Ca = new BigInteger("0");
Ca = OC.mod(N).multiply(R);
Ca = Ca.mod(N);

File file = new File("text.txt");
// create the file
file.createNewFile();
// create a FileWriter Object
FileWriter writer = new FileWriter(file); 

Answer 1

    BigInteger Ca = new BigInteger("0");
    byte[] array = Ca.toByteArray();
    OutputStream fos = new FileOutputStream("text.txt");
    ObjectOutputStream outputStream = new ObjectOutputStream(fos);
    outputStream.write(array);
    outputStream.close();
    fos.close();