You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
 
 
 
 
 
 

153 lines
5.0 KiB

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Security.Cryptography;
namespace SogClient
{
public static class RSABigIntegerUtils
{
private static BigInteger bi_n;
private static BigInteger bi_e;
private static BigInteger bi_d;
public static void GenRSAKey()
{
byte[] pseudoPrime1 = {
(byte)0x85, (byte)0x84, (byte)0x64, (byte)0xFD, (byte)0x70, (byte)0x6A,
(byte)0x9F, (byte)0xF0, (byte)0x94, (byte)0x0C, (byte)0x3E, (byte)0x2C,
(byte)0x74, (byte)0x34, (byte)0x05, (byte)0xC9, (byte)0x55, (byte)0xB3,
(byte)0x85, (byte)0x32, (byte)0x98, (byte)0x71, (byte)0xF9, (byte)0x41,
(byte)0x21, (byte)0x5F, (byte)0x02, (byte)0x9E, (byte)0xEA, (byte)0x56,
(byte)0x8D, (byte)0x8C, (byte)0x44, (byte)0xCC, (byte)0xEE, (byte)0xEE,
(byte)0x3D, (byte)0x2C, (byte)0x9D, (byte)0x2C, (byte)0x12, (byte)0x41,
(byte)0x1E, (byte)0xF1, (byte)0xC5, (byte)0x32, (byte)0xC3, (byte)0xAA,
(byte)0x31, (byte)0x4A, (byte)0x52, (byte)0xD8, (byte)0xE8, (byte)0xAF,
(byte)0x42, (byte)0xF4, (byte)0x72, (byte)0xA1, (byte)0x2A, (byte)0x0D,
(byte)0x97, (byte)0xB1, (byte)0x31, (byte)0xB3,
};
byte[] pseudoPrime2 = {
(byte)0x99, (byte)0x98, (byte)0xCA, (byte)0xB8, (byte)0x5E, (byte)0xD7,
(byte)0xE5, (byte)0xDC, (byte)0x28, (byte)0x5C, (byte)0x6F, (byte)0x0E,
(byte)0x15, (byte)0x09, (byte)0x59, (byte)0x6E, (byte)0x84, (byte)0xF3,
(byte)0x81, (byte)0xCD, (byte)0xDE, (byte)0x42, (byte)0xDC, (byte)0x93,
(byte)0xC2, (byte)0x7A, (byte)0x62, (byte)0xAC, (byte)0x6C, (byte)0xAF,
(byte)0xDE, (byte)0x74, (byte)0xE3, (byte)0xCB, (byte)0x60, (byte)0x20,
(byte)0x38, (byte)0x9C, (byte)0x21, (byte)0xC3, (byte)0xDC, (byte)0xC8,
(byte)0xA2, (byte)0x4D, (byte)0xC6, (byte)0x2A, (byte)0x35, (byte)0x7F,
(byte)0xF3, (byte)0xA9, (byte)0xE8, (byte)0x1D, (byte)0x7B, (byte)0x2C,
(byte)0x78, (byte)0xFA, (byte)0xB8, (byte)0x02, (byte)0x55, (byte)0x80,
(byte)0x9B, (byte)0xC2, (byte)0xA5, (byte)0xCB,
};
BigInteger bi_p = new BigInteger(pseudoPrime1);
BigInteger bi_q = new BigInteger(pseudoPrime2);
BigInteger bi_pq = (bi_p - 1) * (bi_q - 1);
bi_n = bi_p * bi_q;
Random rand = new Random();
bi_e = bi_pq.genCoPrime(32, rand);
bi_d = bi_e.modInverse(bi_pq);
}
public static RSAParameters GetRSAParameters()
{
RSAParameters rp = new RSAParameters();
rp.Modulus = bi_n.getBytes();
rp.Exponent = bi_e.getBytes();
rp.D = bi_d.getBytes();
return rp;
}
public static string ToHexString(byte[] bytes) // 0xae00cf => "AE00CF "
{
string hexString = string.Empty;
if (bytes != null)
{
StringBuilder strB = new StringBuilder();
for (int i = 0; i < bytes.Length; i++)
{
strB.Append(bytes[i].ToString("X2"));
}
hexString = strB.ToString();
}
return hexString;
}
public static byte[] DecryptBytesPrivite(byte[] dataBytes)
{
BigInteger biText = new BigInteger(dataBytes);
TraceLog.Trace("DecryptBytesPrivite enText {0}", biText.ToString());
BigInteger biEnText = biText.modPow(bi_d, bi_n);
byte[] resultbyte = biEnText.getBytes();
return resultbyte;
}
public static byte[] EncryptBytesPublic(byte[] bytes)
{
BigInteger biText = new BigInteger(bytes);
BigInteger biEnText = biText.modPow(bi_e, bi_n);
byte[] outbytes = biEnText.getBytes();
return outbytes;
}
public static string EncryptStringPublic(string bytes)
{
BigInteger biText = new BigInteger(bytes,16);
BigInteger biEnText = biText.modPow(bi_e, bi_n);
string str = biEnText.ToHexString();
return str;
}
public static string DecryptStringPrivite(string dataBytes)
{
BigInteger biText = new BigInteger(dataBytes,16);
BigInteger biEnText = biText.modPow(bi_d, bi_n);
string str = biEnText.ToHexString();
return str;
}
public static void CheckError(byte[] bytes)
{
// encrypt and decrypt data
BigInteger bi_data = new BigInteger(bytes, bytes.Length);
BigInteger bi_encrypted = bi_data.modPow(bi_e, bi_n);
byte[] trans = bi_encrypted.getBytes();
BigInteger bi_encrypted2 = new BigInteger(trans);
BigInteger bi_decrypted = bi_encrypted.modPow(bi_d, bi_n);
// compare
if (bi_decrypted != bi_data)
{
Console.WriteLine("\nError ");
Console.WriteLine(bi_data + "\n");
return;
}
byte[] encrypt = EncryptBytesPublic(bytes);
byte[] decrypt = DecryptBytesPrivite(encrypt);
}
}
}