public string Decrypt(string passCode, EncryptedValue data)
{
byte[] salt = Convert.FromBase64String(data.Base64Salt);
byte[] iv = Convert.FromBase64String(data.Base64IV);
byte[] key = null;
byte[] encrypted = Convert.FromBase64String(data.Base64EncryptedValue);
try {
Rfc2898DeriveBytes k1 = new Rfc2898DeriveBytes(passCode, salt);
key = k1.GetBytes(16);
using (var rijndael = new RijndaelManaged()
{
Mode = CipherMode.CBC
,
IV = iv
,
Key = key
,
Padding = PaddingMode.PKCS7
}) {
using (var decryptor = rijndael.CreateDecryptor(key, iv))
using (var memoryStream = new MemoryStream(encrypted))
using (var cryptoStream = new CryptoStream(memoryStream, decryptor, CryptoStreamMode.Read))
using (var writer = new StreamReader(cryptoStream)) {
//writer.Write(encrypted);
//writer.Flush();
//cryptoStream.Flush();
//cryptoStream.FlushFinalBlock();
//return Convert.ToBase64String(memoryStream.ToArray());
return(writer.ReadToEnd());
}
}
} catch (Exception) {
throw;
} finally {
ClearBytes(salt);
ClearBytes(iv);
ClearBytes(key);
ClearBytes(encrypted);
}
}
public string Decrypt(string passCode, EncryptedValue data)
{
byte[] salt = Convert.FromBase64String(data.Base64Salt);
byte[] iv = Convert.FromBase64String(data.Base64IV);
byte[] key = null;
byte[] encrypted = Convert.FromBase64String(data.Base64EncryptedValue);
try {
Rfc2898DeriveBytes k1 = new Rfc2898DeriveBytes(passCode, salt);
key = k1.GetBytes(16);
using (var rijndael = new RijndaelManaged() {
Mode = CipherMode.CBC
,
IV = iv
,
Key = key
,
Padding = PaddingMode.PKCS7
}) {
using (var decryptor = rijndael.CreateDecryptor(key, iv))
using (var memoryStream = new MemoryStream(encrypted))
using (var cryptoStream = new CryptoStream(memoryStream, decryptor, CryptoStreamMode.Read))
using (var writer = new StreamReader(cryptoStream)) {
//writer.Write(encrypted);
//writer.Flush();
//cryptoStream.Flush();
//cryptoStream.FlushFinalBlock();
//return Convert.ToBase64String(memoryStream.ToArray());
return writer.ReadToEnd();
}
}
} catch (Exception) {
throw;
} finally {
ClearBytes(salt);
ClearBytes(iv);
ClearBytes(key);
ClearBytes(encrypted);
}
}