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