private bool CheckCRC16(byte[] onePackage)
{
Crc32 crc32 = new Crc32();
byte[] newArray = new byte[onePackage.Length - 4];
Array.Copy(onePackage, 0, newArray, 0, newArray.Length);
crc32.AddData(newArray);
UInt32 crcValue = BitConverter.ToUInt32(onePackage, onePackage.Length - 4);
return(crc32.Crc32Value == BitConverter.ToUInt32(onePackage, onePackage.Length - 4));
}
public static String GenerateKey(String password)
{
String returnKey = "";
try
{
using (Aes myAes = Aes.Create())
{
myAes.Key = Security.Security.getEncryptionKey();
myAes.IV = Security.Security.getEncryptionIV();
byte[] toEncryptBytes = Encoding.UTF8.GetBytes(password);
Crc32 crc = new Crc32();
crc.AddData(toEncryptBytes);
byte[] toEncryptBytesCRC = toEncryptBytes.Concat(crc.ToByteArray()).ToArray();
using (var encryptor = myAes.CreateEncryptor(myAes.Key, myAes.IV))
{
using (var ms = new MemoryStream())
{
using (var cs = new CryptoStream(ms, encryptor, CryptoStreamMode.Write))
{
cs.Write(toEncryptBytesCRC, 0, toEncryptBytesCRC.Length);
cs.FlushFinalBlock();
}
returnKey = Convert.ToBase64String(ms.ToArray()).TrimEnd('=').Replace('+', '-').Replace('/', '_');
}
}
}
}
catch (Exception ex)
{
Console.WriteLine("\n!!!!!!!!!!!!!! ExecuteSqlCommandForScalar \n!!!!!!!!!!!!!! {0}", ex);
}
return(returnKey);
}