public static byte[] FromBase32String(string base32)
{
byte[] numArray1 = new byte[base32.Length];
int num1 = base32.Length % 5;
if (num1 != 0)
{
throw new InvalidOperationException("Base32 input string incorrect. Required multiple of 5 character length.");
}
int num2 = base32.Length - num1;
int length = 0;
for (int index = 0; index < num2; index += 5)
{
long num3 = (long)(Base32Converter.GetBase32Number(base32[index]) << 19) | (long)Base32Converter.GetBase32Number(base32[index + 1]) << 14 | (long)Base32Converter.GetBase32Number(base32[index + 2]) << 9 | (long)Base32Converter.GetBase32Number(base32[index + 3]) << 4 | (long)(byte)Base32Converter.GetBase32Number(base32[index + 4]);
numArray1[length + 0] = (byte)((num3 & 16711680L) >> 16);
numArray1[length + 1] = (byte)((num3 & 65280L) >> 8);
numArray1[length + 2] = (byte)((ulong)num3 & (ulong)byte.MaxValue);
length += 3;
}
byte[] numArray2 = new byte[length];
Array.Copy((Array)numArray1, 0, (Array)numArray2, 0, length);
return(numArray2);
}
public bool ValidKey(ref string ProductKey)
{
using (new RSACryptoServiceProvider())
{
try
{
if (string.IsNullOrEmpty(ProductKey))
{
throw new ArgumentNullException("Product Key is null or empty.");
}
if (ProductKey.Length != 35)
{
throw new ArgumentException("Product key is invalid.");
}
byte[] buffer1 = Base32Converter.FromBase32String(ProductKey.Replace("-", ""));
byte[] buffer2 = new byte[1];
byte[] buffer3 = new byte[1];
byte[] numArray = new byte[16];
using (MemoryStream memoryStream = new MemoryStream(buffer1))
{
memoryStream.Read(numArray, 0, 8);
memoryStream.Read(buffer2, 0, 1);
memoryStream.Read(buffer3, 0, 1);
memoryStream.Read(numArray, 8, numArray.Length - 8);
memoryStream.ToArray();
}
new RijndaelManaged().CreateDecryptor(new byte[32]
{
(byte)9,
(byte)192,
(byte)133,
(byte)135,
(byte)96,
(byte)254,
(byte)70,
(byte)21,
(byte)34,
(byte)88,
(byte)251,
(byte)164,
(byte)153,
(byte)21,
(byte)202,
(byte)129,
(byte)146,
(byte)199,
(byte)146,
(byte)21,
(byte)169,
(byte)72,
(byte)3,
(byte)36,
(byte)231,
(byte)22,
(byte)209,
(byte)188,
(byte)118,
(byte)36,
(byte)48,
(byte)194
}, new byte[16]
{
(byte)148,
(byte)5,
(byte)58,
(byte)123,
(byte)59,
(byte)115,
(byte)65,
(byte)151,
(byte)197,
(byte)88,
(byte)86,
(byte)179,
(byte)206,
(byte)85,
(byte)34,
(byte)76
}).TransformFinalBlock(numArray, 0, numArray.Length);
return(true);
}
catch
{
return(false);
}
}
}
public bool GenerateKey(KeyValuesClass KeyValues, ref string ProductKey)
{
//RSACryptoServiceProvider cryptoServiceProvider = null;
//try
//{//windows
// cryptoServiceProvider = new RSACryptoServiceProvider(1024, new CspParameters()
// {
// Flags = CspProviderFlags.UseMachineKeyStore
// });
//}
//catch (Exception)
//{//docker linux
// cryptoServiceProvider = new RSACryptoServiceProvider();
//}
try
{
string empty = string.Empty;
byte[] bytes1 = BitConverter.GetBytes((short)KeyValues.Header);
byte[] bytes2 = BitConverter.GetBytes((short)KeyValues.ProductCode);
byte[] bytes3 = BitConverter.GetBytes((short)KeyValues.Version);
byte[] bytes4 = BitConverter.GetBytes((short)(byte)KeyValues.Edition);
byte[] bytes5 = BitConverter.GetBytes((short)(byte)KeyValues.Type);
DateTime expiration = KeyValues.Expiration;
string str1 = expiration.Day.ToString().PadLeft(2, '0');
string str2 = empty + str1;
expiration = KeyValues.Expiration;
string str3 = expiration.Month.ToString().PadLeft(2, '0');
string str4 = str2 + str3;
expiration = KeyValues.Expiration;
string str5 = expiration.Year.ToString();
byte[] bytes6 = BitConverter.GetBytes(Convert.ToUInt32(str4 + str5));
byte[] bytes7 = BitConverter.GetBytes(new Random().Next(0, (int)byte.MaxValue));
byte[] bytes8 = BitConverter.GetBytes((short)KeyValues.Footer);
byte[] array1;
using (MemoryStream memoryStream = new MemoryStream())
{
memoryStream.Write(bytes1, 0, 1);
memoryStream.Write(bytes2, 0, 1);
memoryStream.Write(bytes3, 0, 1);
memoryStream.Write(bytes4, 0, 1);
memoryStream.Write(bytes5, 0, 1);
memoryStream.Write(bytes6, 0, 4);
memoryStream.Write(bytes7, 0, 1);
memoryStream.Write(bytes8, 0, 1);
array1 = memoryStream.ToArray();
}
byte[] buffer = new RijndaelManaged().CreateEncryptor(new byte[32]
{
(byte)9,
(byte)192,
(byte)133,
(byte)135,
(byte)96,
(byte)254,
(byte)70,
(byte)21,
(byte)34,
(byte)88,
(byte)251,
(byte)164,
(byte)153,
(byte)21,
(byte)202,
(byte)129,
(byte)146,
(byte)199,
(byte)146,
(byte)21,
(byte)169,
(byte)72,
(byte)3,
(byte)36,
(byte)231,
(byte)22,
(byte)209,
(byte)188,
(byte)118,
(byte)36,
(byte)48,
(byte)194
}, new byte[16]
{
(byte)148,
(byte)5,
(byte)58,
(byte)123,
(byte)59,
(byte)115,
(byte)65,
(byte)151,
(byte)197,
(byte)88,
(byte)86,
(byte)179,
(byte)206,
(byte)85,
(byte)34,
(byte)76
}).TransformFinalBlock(array1, 0, array1.Length);
byte[] array2;
using (MemoryStream memoryStream = new MemoryStream())
{
memoryStream.Write(buffer, 0, 8);
memoryStream.Write(bytes1, 0, 1);
memoryStream.Write(bytes7, 0, 1);
memoryStream.Write(buffer, 8, buffer.Length - 8);
array2 = memoryStream.ToArray();
}
string base32String = Base32Converter.ToBase32String(array2);
ProductKey = string.Format("{0}-{1}-{2}-{3}-{4}-{5}", (object)base32String.Substring(0, 5), (object)base32String.Substring(5, 5), (object)base32String.Substring(10, 5), (object)base32String.Substring(15, 5), (object)base32String.Substring(20, 5), (object)base32String.Substring(25, 5));
return(true);
}
catch
{
return(false);
}
}
public bool DisassembleKey(string ProductKey, ref KeyValuesClass KeyValues)
{
//RSACryptoServiceProvider cryptoServiceProvider = new RSACryptoServiceProvider(1024, new CspParameters()
//{
// Flags = CspProviderFlags.UseMachineKeyStore
//});
try
{
if (string.IsNullOrEmpty(ProductKey))
{
throw new ArgumentNullException("Product Key is null or empty.");
}
if (ProductKey.Length != 35)
{
throw new ArgumentException("Product key is invalid.");
}
byte[] buffer1 = Base32Converter.FromBase32String(ProductKey.Replace("-", ""));
byte[] buffer2 = new byte[2];
byte[] buffer3 = new byte[1];
byte[] numArray = new byte[16];
using (MemoryStream memoryStream = new MemoryStream(buffer1))
{
memoryStream.Read(numArray, 0, 8);
memoryStream.Read(buffer2, 0, 1);
memoryStream.Read(buffer3, 0, 1);
memoryStream.Read(numArray, 8, numArray.Length - 8);
memoryStream.ToArray();
}
byte[] buffer4 = new RijndaelManaged().CreateDecryptor(new byte[32]
{
(byte)9,
(byte)192,
(byte)133,
(byte)135,
(byte)96,
(byte)254,
(byte)70,
(byte)21,
(byte)34,
(byte)88,
(byte)251,
(byte)164,
(byte)153,
(byte)21,
(byte)202,
(byte)129,
(byte)146,
(byte)199,
(byte)146,
(byte)21,
(byte)169,
(byte)72,
(byte)3,
(byte)36,
(byte)231,
(byte)22,
(byte)209,
(byte)188,
(byte)118,
(byte)36,
(byte)48,
(byte)194
}, new byte[16]
{
(byte)148,
(byte)5,
(byte)58,
(byte)123,
(byte)59,
(byte)115,
(byte)65,
(byte)151,
(byte)197,
(byte)88,
(byte)86,
(byte)179,
(byte)206,
(byte)85,
(byte)34,
(byte)76
}).TransformFinalBlock(numArray, 0, numArray.Length);
byte[] buffer5 = new byte[2];
byte[] buffer6 = new byte[2];
byte[] buffer7 = new byte[2];
byte[] buffer8 = new byte[2];
byte[] buffer9 = new byte[2];
byte[] buffer10 = new byte[4];
byte[] buffer11 = new byte[2];
byte[] buffer12 = new byte[2];
using (MemoryStream memoryStream = new MemoryStream(buffer4))
{
memoryStream.Read(buffer5, 0, 1);
memoryStream.Read(buffer6, 0, 1);
memoryStream.Read(buffer7, 0, 1);
memoryStream.Read(buffer8, 0, 1);
memoryStream.Read(buffer9, 0, 1);
memoryStream.Read(buffer10, 0, 4);
memoryStream.Read(buffer11, 0, 1);
memoryStream.Read(buffer12, 0, 1);
}
KeyValuesClass keyValuesClass = new KeyValuesClass();
keyValuesClass.Header = (byte)BitConverter.ToInt16(buffer5, 0);
keyValuesClass.ProductCode = (byte)BitConverter.ToInt16(buffer6, 0);
keyValuesClass.Version = (byte)BitConverter.ToInt16(buffer7, 0);
keyValuesClass.Edition = (Edition)BitConverter.ToInt16(buffer8, 0);
keyValuesClass.Type = (LicenseType)BitConverter.ToInt16(buffer9, 0);
if (keyValuesClass.Type == LicenseType.TRIAL)
{
string str = BitConverter.ToUInt32(buffer10, 0).ToString().PadLeft(8, '0');
keyValuesClass.Expiration = new DateTime((int)Convert.ToInt16(str.Substring(4, 4)), (int)Convert.ToInt16(str.Substring(2, 2)), (int)Convert.ToInt16(str.Substring(0, 2)));
}
keyValuesClass.Footer = (byte)BitConverter.ToInt16(buffer12, 0);
KeyValues = keyValuesClass;
return(true);
}
catch
{
return(false);
}
}
