Asp.net 在 AndroidJava 和 C# 中计算 SHA256 哈希

我试图在android中生成一个SHA256哈希，然后将其传递给ASP.NET API Web服务，并比较其中的哈希值.因此，我需要在Android中构造一个哈希，在ASP中提供相同的输入.NET将生成一个等价的哈希.我拼命想弄清楚我做错了什么.

以下是Android代码:

public String computeHash(String input) throws NoSuch算法rithmException{
    MessageDigest digest = MessageDigest.getInstance("SHA-256");
    digest.reset();
    try{
      digest.update(input.getBytes("UTF-8"));
    } catch (UnsupportedEncodingException e){
      e.printStackTrace();
    }

    byte[] byteData = digest.digest(input.getBytes());
    StringBuffer sb = new StringBuffer();

    for (int i = 0; i < byteData.length; i++){
      sb.append(Integer.toString((byteData[i] & 0xff) + 0x100, 16).substring(1));
    }
    return sb.toString();
}

这是服务器上的代码(c#):

    private static string ComputeHash(string input, Hash算法rithm algorithm)
    {

        Byte[] inputBytes = Encoding.UTF8.GetBytes(input);
        Byte[] hashedBytes = algorithm.ComputeHash(inputBytes);

        StringBuilder sb = new StringBuilder();

        for (int i = 0; i < hashedBytes.Length; i++)
        {
            sb.Append(String.Format("{0:x2}", hashedBytes[i]));
        }

        return sb.ToString();
    }

UPDATE:

public String computeHash(String input) throws NoSuch算法rithmException, UnsupportedEncodingException{
    MessageDigest digest = MessageDigest.getInstance("SHA-256");
    digest.reset();

    byte[] byteData = digest.digest(input.getBytes("UTF-8"));
    StringBuffer sb = new StringBuffer();

    for (int i = 0; i < byteData.length; i++){
      sb.append(Integer.toString((byteData[i] & 0xff) + 0x100, 16).substring(1));
    }
    return sb.toString();
}