public string Decrypt(string toBeDecrypted, DecryptedResponse decryptedResponse)
{
byte[] decryptedBytes = null;
var bytesToBeDecrypted = Convert.FromBase64String(toBeDecrypted);
var saltBytes = Encoding.UTF8.GetBytes(decryptedResponse.Salt);
var passwordBytes = Encoding.UTF8.GetBytes(decryptedResponse.Password);
using (MemoryStream ms = new MemoryStream())
{
using (var AES = new RijndaelManaged())
{
AES.KeySize = 256;
AES.BlockSize = 128;
var key = new Rfc2898DeriveBytes(passwordBytes, saltBytes, 1000);
AES.Key = key.GetBytes(AES.KeySize / 8);
AES.IV = key.GetBytes(AES.BlockSize / 8);
AES.Mode = CipherMode.CBC;
using (var cs = new CryptoStream(ms, AES.CreateDecryptor(), CryptoStreamMode.Write))
{
cs.Write(bytesToBeDecrypted, 0, bytesToBeDecrypted.Length);
cs.Close();
}
decryptedBytes = ms.ToArray();
}
}
return(Encoding.UTF8.GetString(decryptedBytes));
}
public void StoreDecryption(string documentId, DecryptedResponse decryptedResponse)
{
if (decryptedResponse == null)
{
throw new ArgumentNullException(nameof(decryptedResponse));
}
var fullPath = GetFullPath(documentId);
if (File.Exists(fullPath))
{
File.Delete(fullPath);
}
File.WriteAllText(fullPath, JsonConvert.SerializeObject(decryptedResponse));
}
