private static EncryptedSymmetric EncryptSymmetric(string message)
{
EncryptedSymmetric encrypted;
using (var symmetric = CryptHandler.CreateSymmetric())
{
symmetric.GenerateIV();
symmetric.GenerateKey();
using (var ms = new System.IO.MemoryStream())
{
using (var cs = new CryptoStream(ms, symmetric.CreateEncryptor(), CryptoStreamMode.Write))
{
using (var writer = new StreamWriter(cs, CryptHandler.Encoding))
{
writer.Write(message);
}
}
encrypted = new EncryptedSymmetric()
{
Name = symmetric.GetType().BaseType.Name,
IV = symmetric.IV,
Key = symmetric.Key,
Encrypted = ms.ToArray()
};
}
symmetric.Clear();
}
return(encrypted);
}
private static string DecryptSymmetric(byte[] message, byte[] iv, byte[] key)
{
var plainText = "";
using (var symmetric = CryptHandler.CreateSymmetric())
{
using (var ms = new System.IO.MemoryStream(message))
{
using (var cs = new CryptoStream(ms, symmetric.CreateDecryptor(key, iv), CryptoStreamMode.Read))
{
using (var reader = new StreamReader(cs, CryptHandler.Encoding))
{
plainText = reader.ReadToEnd();
reader.Close();
}
}
}
symmetric.Clear();
}
return(plainText);
}
