public byte[] Encrypt(string plainText, out byte[] keyBytes, out byte[] ivBytes)
{
if (plainText == null || plainText.Length <= 0)
{
throw new ArgumentNullException("plainText");
}
System.IO.MemoryStream memoryStream;
using (System.Security.Cryptography.AesCryptoServiceProvider csp = new System.Security.Cryptography.AesCryptoServiceProvider())
{
csp.GenerateKey();
csp.GenerateIV();
keyBytes = csp.Key;
ivBytes = csp.IV;
//csp.CreateEncryptor
// Create an encryptor to perform the stream transform.
System.Security.Cryptography.ICryptoTransform cryptoTransformer = csp.CreateEncryptor(csp.Key, csp.IV);
// Create the streams used for encryption.
using (memoryStream = new System.IO.MemoryStream())
using (System.Security.Cryptography.CryptoStream cryptoStream = new System.Security.Cryptography.CryptoStream(memoryStream, cryptoTransformer, System.Security.Cryptography.CryptoStreamMode.Write))
using (System.IO.StreamWriter sw = new System.IO.StreamWriter(cryptoStream))
{
sw.AutoFlush = true;
sw.Write(plainText);
}
}
return(memoryStream.ToArray());
}
byte[] getstandardkey()
{
System.Security.Cryptography.AesCryptoServiceProvider helper =
new System.Security.Cryptography.AesCryptoServiceProvider();
helper.GenerateKey();
if (File.Exists("dispenser.bin") == false)
{
File.WriteAllBytes("dispenser.bin", helper.Key);
}
byte[] keyend = File.ReadAllBytes("dispenser.bin");
byte[] sentryFile;
if (File.Exists("sentry.bin"))
{
sentryFile = File.ReadAllBytes("sentry.bin");
}
else
{
byte[] dummysent = new byte[18];
rnd.NextBytes(dummysent);
File.WriteAllBytes("sentry.bin", dummysent);
sentryFile = dummysent;
}
byte[] sentryHash = CryptoHelper.SHAHash(sentryFile);
byte[] fullkey = new byte[helper.Key.Length];
int y = 0;
while (y < sentryHash.Length)
{
fullkey[y] = sentryHash[y];
y = y + 1;
}
while (y < fullkey.Length)
{
fullkey[y] = keyend[y - 18];
y = y + 1;
}
return(fullkey);
}
