谁能帮忙把这段C#翻译nodejs版本 - CNode技术社区

是关于rsa解密的

public static String decrypt(String cryptograph, BigInteger d,BigInteger n, int numBit)
 {
 String[] chs = cryptograph.Split(' ');
 if (chs == null || chs.GetLength(0) <= 0)
 {
 throw new Exception("密文不符合要求!!!");
 }
 int numeroToken = chs.GetLength(0);
 BigInteger[] StringToByte = new BigInteger[numeroToken];
 for (int i = 0; i < numeroToken; i++)
 {
 StringToByte[i] = new BigInteger(chs[i], 16);
 }
 byte[][] encodeM = dencodeRSA(StringToByte, d, n);
 byte[] sendMessage = StringToByte(encodeM);
 //String message = new String(sendMessage, "UTF-8");
 string message = System.Text.Encoding.Default.GetString(sendMessage);
 String result = System.Web.HttpUtility.UrlDecode(message, Encoding.UTF8);//.UrlDecode.decode(message, "UTF-8");
 return result;
 }
 private static byte[][] dencodeRSA(BigInteger[] encodeM, BigInteger d,BigInteger n)
{
 byte[][] dencodeM = new byte[encodeM.GetLength(0)][];
 int i;
 int lung = encodeM.GetLength(0);
 for (i = 0; i < lung; i++)
 {
 dencodeM[i] = encodeM[i].ModPow(d, n).ToByteArray();
 }
 return dencodeM;
 }
 private static byte[] StringToByte(byte[][] arraySenS)
{
 int i, dab = 0;
 for (i = 0; i < arraySenS.GetLength(0); i++)
 {
 if (arraySenS[i] == null)
 {
 return null;
 }
 dab = dab + arraySenS[i].GetLength(0);
 }
 List<Byte> listByte = new List<Byte>();
 int j;
 for (i = 0; i < arraySenS.GetLength(0); i++)
 {
 for (j = 0; j < arraySenS[i].GetLength(0); j++)
 {
 if (arraySenS[i][j] != 0x20)
 {
 listByte.Add(arraySenS[i][j]);
 }
 }
 }
 Byte[] arrayByte = listByte.ToArray();//.toArray(new Byte[0]);
 byte[] result = new byte[arrayByte.GetLength(0)];
 for (int k = 0; k < arrayByte.GetLength(0); k++)
 {
 result[k] = (arrayByte[k]);//.byteValue();
 }
 listByte = null;
 arrayByte = null;
 return result;
 }