public static byte[] Decrypt(byte[] bytesToDecrypt, string password)
{
byte[] passwordBytes = SHA2.GetHash(password);
(byte[] encrypted, byte[] ivSeed) = bytesToDecrypt.Pop(8);
(byte[] key, byte[] iv) = GetKeyAndIv(passwordBytes, ivSeed);
byte[] decrypted = null;
try
{
using (MemoryStream mStream = new MemoryStream(encrypted))
{
using (AesCryptoServiceProvider aesProvider = new AesCryptoServiceProvider())
{
aesProvider.Padding = PaddingMode.None;
using (CryptoStream cryptoStream = new CryptoStream(mStream, aesProvider.CreateDecryptor(key, iv), CryptoStreamMode.Read))
{
cryptoStream.Read(encrypted, 0, encrypted.Length);
}
}
// take only the number of bytes that were in the original byte[]
decrypted = mStream.ToArray();
decrypted = decrypted.SplitOnce(eof.ConvertToByteArray())[0];
}
}
catch (Exception ex)
{
}
return(decrypted);
}
public static byte[] Encrypt(byte[] bytesToEncrypt, string password)
{
byte[] passwordBytes = SHA2.GetHash(password);
bytesToEncrypt = bytesToEncrypt.Append(eof);
byte[] ivSeed = GetRandomNumber();
(byte[] key, byte[] iv) = GetKeyAndIv(passwordBytes, ivSeed);
byte[] encrypted;
using (MemoryStream mstream = new MemoryStream())
{
using (AesCryptoServiceProvider aesProvider = new AesCryptoServiceProvider())
{
using (CryptoStream cryptoStream = new CryptoStream(mstream, aesProvider.CreateEncryptor(key, iv), CryptoStreamMode.Write))
{
cryptoStream.Write(bytesToEncrypt, 0, bytesToEncrypt.Length);
}
}
encrypted = mstream.ToArray();
}
encrypted = encrypted.Append(ivSeed);
return(encrypted);
}
