public async Task <string> EncryptAsync(EncryptionModel model)
{
byte[] iv = new byte[16];
byte[] array;
using (Aes aes = Aes.Create())
{
aes.Key = Encoding.UTF8.GetBytes(_encryptionKeyService.GetKey());
aes.IV = iv;
ICryptoTransform encryptor = aes.CreateEncryptor(aes.Key, aes.IV);
using (MemoryStream memoryStream = new MemoryStream())
{
using (CryptoStream cryptoStream = new CryptoStream((Stream)memoryStream, encryptor, CryptoStreamMode.Write))
{
using (StreamWriter streamWriter = new StreamWriter((Stream)cryptoStream))
{
await streamWriter.WriteAsync(model.Secret);
}
array = memoryStream.ToArray();
}
}
}
return(Convert.ToBase64String(array));
}
public string changePassword([FromBody] TamuModel tamu)
{
try
{
connection = new SqlConnection(ConnectionModel.connectionString);
connection.Open();
string email = tamu.email;
string password = EncryptionModel.encryption(tamu.password);
string passwordRepeat = EncryptionModel.encryption(tamu.confirm);
command = new SqlCommand("SELECT * FROM tamu WHERE email = '" + email + "' AND password LIKE '" + password + "'", connection);
reader = command.ExecuteReader();
reader.Read();
if (reader.HasRows)
{
reader.Close();
command = new SqlCommand("UPDATE tamu SET password = '******' WHERE email = '" + email + "' AND password LIKE '" + password + "'", connection);
command.ExecuteReader();
connection.Close();
return("Success");
}
else
{
reader.Close();
connection.Close();
return("Fail");
}
} catch (Exception)
{
return("Fail");
}
}
public async Task <IActionResult> Encrypt(EncryptionModel model)
{
var result = new ExpandoObject();
result.TryAdd("data", await _encryptionService.EncryptAsync(model));
return(Ok(result));
}
public async Task <IActionResult> decrypt(EncryptionModel model)
{
var service = EncryptionService.DecryptString(model.text);
var response = new GenericResponse <string>()
{
IsSuccess = true,
Message = "Bucket created successfully.",
ResponseCode = 200,
Result = service
};
return(Ok(response));
}
public JsonResult SymmetricEncrypt(WebSecurity.Models.EncryptionModel encryption, string ButtonType)
{
var result = new EncryptionModel();
var symEncryption = new SymmetricEncryption();
SymmetricAlgorithm symAlgo = new AesManaged();
symAlgo.Padding = PaddingMode.PKCS7;
var key = string.Empty;
var iv = string.Empty;
if (!string.IsNullOrEmpty(encryption.PrivateKey) && !string.IsNullOrEmpty(encryption.InitializationVector))
{
symAlgo.Key = Convert.FromBase64String(encryption.PrivateKey);
symAlgo.IV = Convert.FromBase64String(encryption.InitializationVector);
}
else
{
key = Convert.ToBase64String(symAlgo.Key);
iv = Convert.ToBase64String(symAlgo.IV);
}
if (ButtonType == "Encrypt")
{
var encryptedText = symEncryption.EncryptText(symAlgo, encryption.PlainText);
result = new EncryptionModel()
{
EncryptedText = encryptedText,
PlainText = encryption.PlainText,
InitializationVector = iv,
PrivateKey = key
};
}
else if (ButtonType == "Decrypt")
{
var plainText = symEncryption.DecryptData(symAlgo, encryption.EncryptedText);
result = new EncryptionModel()
{
EncryptedText = encryption.EncryptedText,
PlainText = plainText,
PrivateKey = encryption.PrivateKey,
InitializationVector = encryption.InitializationVector
};
}
return(Json(result));
}
public async Task <string> EncryptAsync(EncryptionModel model)
{
try
{
var response = await _apiClient.Client.PostAsJsonAsync("encrypt", model);
var result = await response.Content.ReadAsStringAsync();
return(JsonConvert.DeserializeObject <string>(result));
}
catch (Exception)
{
throw new ApiException("Encryption service is unavailable");
}
}
public JsonResult AsymmetricEncrypt(WebSecurity.Models.EncryptionModel encryption, string ButtonType)
{
RSACryptoServiceProvider rsa = new RSACryptoServiceProvider();
string publicKey = string.Empty; // false to get the public key
string privateKey = string.Empty; // true to get the private key
if (!string.IsNullOrEmpty(encryption.PublicKey) && !string.IsNullOrEmpty(encryption.PrivateKey))
{
publicKey = HttpUtility.HtmlDecode(encryption.PublicKey);
privateKey = HttpUtility.HtmlDecode(encryption.PrivateKey);
}
else
{
publicKey = rsa.ToXmlString(false); // false to get the public key
privateKey = rsa.ToXmlString(true); // true to get the private key
}
var result = new EncryptionModel();
var asymEncryption = new AsymmetricEncryption();
if (ButtonType == "Encrypt")
{
var encryptedText = asymEncryption.EncryptText(publicKey, encryption.PlainText);
result = new EncryptionModel()
{
EncryptedText = encryptedText,
PlainText = encryption.PlainText,
PublicKey = HttpUtility.HtmlEncode(publicKey),
PrivateKey = HttpUtility.HtmlEncode(privateKey)
};
}
else if (ButtonType == "Decrypt")
{
var plainText = asymEncryption.DecryptData(HttpUtility.HtmlDecode(encryption.PrivateKey), encryption.EncryptedText);
result = new EncryptionModel()
{
EncryptedText = encryption.EncryptedText,
PlainText = plainText,
PublicKey = HttpUtility.HtmlEncode(publicKey),
PrivateKey = HttpUtility.HtmlEncode(privateKey)
};
}
return(Json(result));
}
public TamuModel login([FromBody] TamuModel tamu)
{
try
{
connection = new SqlConnection(ConnectionModel.connectionString);
connection.Open();
string email = tamu.email;
string password = EncryptionModel.encryption(tamu.password);
command = new SqlCommand("SELECT * FROM tamu WHERE email = '" + email + "' AND password LIKE '" + password + "'", connection);
reader = command.ExecuteReader();
reader.Read();
if (reader.HasRows)
{
tamu.id = Convert.ToInt32(reader[0]);
tamu.nik = Convert.ToString(reader[1]);
tamu.nama = Convert.ToString(reader[2]);
tamu.email = Convert.ToString(reader[3]);
tamu.nohp = Convert.ToString(reader[4]);
tamu.alamat = Convert.ToString(reader[5]);
tamu.password = Convert.ToString(reader[6]);
connection.Close();
return(tamu);
}
else
{
connection.Close();
return(null);
}
} catch (Exception)
{
return(null);
}
}
public async Task <IActionResult> Encrypt([FromBody] EncryptionModel model)
{
return(Ok(await _encryptionService.EncryptAsync(model)));
}