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MrOplus/AryaNetCryptHelper.cs

Created February 13, 2021 13:35
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AryaNet
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AryaNetCryptHelper.cs
using System;
using System.Diagnostics;
using System.IO;
using System.Runtime.CompilerServices;
using System.Security.Cryptography;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
namespace AryaNet_Client
{
internal static class Aryanet_crypto
{
public static async Task CopyDecryptAsync(Stream source, Stream destination, string aeskey, string addy, CancellationToken cancellationToken = null, int bufferSize = 4104)
{
byte[] numArray = new byte[bufferSize];
while (true)
{
int num = await source.ReadAsync(numArray, 0, (int)numArray.Length, cancellationToken);
int num1 = num;
if (num <= 0)
{
break;
}
if (aeskey != null)
{
string str = BitConverter.ToString(numArray);
for (int i = 29; i > 0; i--)
{
str = str.Replace(aeskey[i], '~').Replace(aeskey[i - 1], aeskey[i]).Replace('~', aeskey[i - 1]);
}
string[] strArrays = str.Split(new char[] { '-' });
byte[] numArray1 = new byte[(int)strArrays.Length];
for (int j = 0; j < (int)strArrays.Length; j++)
{
numArray1[j] = Convert.ToByte(strArrays[j], 16);
}
await destination.WriteAsync(numArray1, 0, num1, cancellationToken);
}
else
{
string str1 = BitConverter.ToString(numArray).Replace('2', '~').Replace('1', '2').Replace('~', '1');
string[] strArrays1 = str1.Split(new char[] { '-' });
byte[] num2 = new byte[(int)strArrays1.Length];
for (int k = 0; k < (int)strArrays1.Length; k++)
{
num2[k] = Convert.ToByte(strArrays1[k], 16);
}
await destination.WriteAsync(num2, 0, num1, cancellationToken);
}
cancellationToken.ThrowIfCancellationRequested();
}
numArray = null;
}
public static async Task CopyEncryptAsync(Stream source, Stream destination, string aeskey, string addy, CancellationToken cancellationToken = null, int bufferSize = 4096)
{
byte[] numArray = new byte[bufferSize];
while (true)
{
int num = await source.ReadAsync(numArray, 0, (int)numArray.Length, cancellationToken);
int num1 = num;
if (num <= 0)
{
break;
}
if (aeskey != null)
{
string str = BitConverter.ToString(numArray);
for (int i = 0; i < 29; i++)
{
str = str.Replace(aeskey[i], '~').Replace(aeskey[i + 1], aeskey[i]).Replace('~', aeskey[i + 1]);
}
string[] strArrays = str.Split(new char[] { '-' });
byte[] numArray1 = new byte[(int)strArrays.Length];
for (int j = 0; j < (int)strArrays.Length; j++)
{
numArray1[j] = Convert.ToByte(strArrays[j], 16);
}
await destination.WriteAsync(numArray1, 0, num1, cancellationToken);
cancellationToken.ThrowIfCancellationRequested();
}
else
{
string str1 = BitConverter.ToString(numArray).Replace('1', '~').Replace('2', '1').Replace('~', '2');
string[] strArrays1 = str1.Split(new char[] { '-' });
byte[] num2 = new byte[(int)strArrays1.Length];
for (int k = 0; k < (int)strArrays1.Length; k++)
{
num2[k] = Convert.ToByte(strArrays1[k], 16);
}
await destination.WriteAsync(num2, 0, num1, cancellationToken);
}
}
numArray = null;
}
public static byte[] DecryptCTTPT(byte[] toEncryptArray, int bytesRead, string _securityKey)
{
MD5CryptoServiceProvider mD5CryptoServiceProvider = new MD5CryptoServiceProvider();
byte[] numArray = mD5CryptoServiceProvider.ComputeHash(Encoding.UTF8.GetBytes(_securityKey));
mD5CryptoServiceProvider.Clear();
return (new TripleDESCryptoServiceProvider()
{
Key = numArray,
Mode = CipherMode.ECB,
Padding = PaddingMode.PKCS7
}).CreateDecryptor().TransformFinalBlock(toEncryptArray, 0, bytesRead);
}
public static byte[] EncryptPTTCT(byte[] toEncryptedArray, int bytesRead, string _securityKey)
{
MD5CryptoServiceProvider mD5CryptoServiceProvider = new MD5CryptoServiceProvider();
byte[] numArray = mD5CryptoServiceProvider.ComputeHash(Encoding.UTF8.GetBytes(_securityKey));
mD5CryptoServiceProvider.Clear();
return (new TripleDESCryptoServiceProvider()
{
Key = numArray,
Mode = CipherMode.ECB,
Padding = PaddingMode.PKCS7
}).CreateEncryptor().TransformFinalBlock(toEncryptedArray, 0, bytesRead);
}
}
}
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