/// <summary>
/// Función encargada de encriptar los datos del usuario
/// </summary>
/// <param name="password"></param>
/// <returns></returns>
public ArrayList encryptOutlook(string password)
{
string semilla = "0uTl@k";
string marcaTiempo = "";
ArrayList resultado = new ArrayList();
string encriptado = "";
try
{
// do
// {
byte[] iv = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
IvParameterSpec ivspec = new IvParameterSpec(iv);
marcaTiempo = (new SimpleDateFormat("ddMMyyyyHHmmss")).format(new Date());
KeySpec clave = new PBEKeySpec(marcaTiempo.ToCharArray(), Encoding.Default.GetBytes(semilla), 65536, 256);
SecretKey hash = SecretKeyFactory.getInstance("PBKDF2WithHmacSHA256").generateSecret(clave);
SecretKeySpec key = new SecretKeySpec(hash.getEncoded(), "AES");
Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
cipher.init(Cipher.ENCRYPT_MODE, key, ivspec);
encriptado = Base64.getEncoder().encodeToString(cipher.doFinal(Encoding.UTF8.GetBytes(password)));
resultado.add(encriptado);
resultado.add(marcaTiempo);
}
catch (Exception e)
{
System.Console.WriteLine("Error en la encriptacion: " + e.ToString());
resultado = new ArrayList();
}
return(resultado);
}
/// <exception cref="Sharpen.InvalidKeySpecException"></exception>
/// <exception cref="Sharpen.NoSuchAlgorithmException"></exception>
internal ObjectEncryptionV2(string algo, string key)
{
algorithmName = algo;
PBEKeySpec s;
s = new PBEKeySpec(key.ToCharArray(), salt, ITERATION_COUNT, 32);
skey = SecretKeyFactory.GetInstance(algo).GenerateSecret(s);
aspec = new PBEParameterSpec(salt, ITERATION_COUNT);
}
public void Add(string key, string value)
{
PBEKeySpec keyspec = new PBEKeySpec(value.ToCharArray());
SecretKeyFactory fk = SecretKeyFactory.GetInstance("PBEWithMD5andDES");
ISecretKey mysec = fk.GenerateSecret(keyspec);
KeyStore.SecretKeyEntry entry = new KeyStore.SecretKeyEntry(mysec);
keyStore.SetEntry(key, entry, Password);
Save();
}
public void CreateKey(string password, string userEmail)
{
// Remove key to overwrite, otherwise nothing
DeleteKey();
// Make password based key with many iterations, a salt, and user-related value (email?)
var spec = new PBEKeySpec((password + userEmail).ToCharArray(), SALT, ITERATIONS, KEY_SIZE);
var keyGenerator = SecretKeyFactory.GetInstance("PBEWithHmacSHA256AndAES_256");
var key = keyGenerator.GenerateSecret(spec);
_storageHelper.StoreItem <byte[]>(_keyAlias, key.GetEncoded());
}
public AESObfuscator(byte[] salt, string password)
{
try {
SecretKeyFactory factory = SecretKeyFactory.GetInstance(KEYGEN_ALGORITHM);
PBEKeySpec keySpec =
new PBEKeySpec(password.ToCharArray(), salt, 1024, 256);
ISecretKey tmp = factory.GenerateSecret(keySpec);
ISecretKey secret = new SecretKeySpec(tmp.GetEncoded(), "AES");
mEncryptor = Cipher.GetInstance(CIPHER_ALGORITHM);
mEncryptor.Init(Cipher.EncryptMode, secret, new IvParameterSpec(IV));
mDecryptor = Cipher.GetInstance(CIPHER_ALGORITHM);
mDecryptor.Init(Cipher.DecryptMode, secret, new IvParameterSpec(IV));
} catch (GeneralSecurityException e) {
// This can't happen on a compatible Android device.
throw new RuntimeException("Invalid environment", e);
}
}
/// <summary>
/// Initializes a new instance of the <see cref="AesObfuscator"/> class.
/// The aes obfuscator.
/// </summary>
/// <param name="salt">
/// an array of random bytes to use for each (un)obfuscation
/// </param>
/// <param name="applicationId">
/// application identifier, e.g. the package name
/// </param>
/// <param name="deviceId">
/// device identifier. Use as many sources as possible to
/// create this unique identifier.
/// </param>
public AesObfuscator(byte[] salt, string applicationId, string deviceId)
{
try
{
SecretKeyFactory factory = SecretKeyFactory.GetInstance(KeygenAlgorithm);
IKeySpec keySpec = new PBEKeySpec((applicationId + deviceId).ToCharArray(), salt, 1024, 256);
ISecretKey tmp = factory.GenerateSecret(keySpec);
ISecretKey secret = new SecretKeySpec(tmp.GetEncoded(), "AES");
this.encryptor = Cipher.GetInstance(CipherAlgorithm);
this.encryptor.Init(CipherMode.EncryptMode, secret, new IvParameterSpec(Iv));
this.decryptor = Cipher.GetInstance(CipherAlgorithm);
this.decryptor.Init(CipherMode.DecryptMode, secret, new IvParameterSpec(Iv));
}
catch (GeneralSecurityException e)
{
// This can't happen on a compatible Android device.
throw new RuntimeException("Invalid environment", e);
}
}
/// <exception cref="Sharpen.InvalidKeySpecException"></exception>
/// <exception cref="Sharpen.NoSuchAlgorithmException"></exception>
internal ObjectEncryptionV2(string algo, string key)
{
algorithmName = algo;
PBEKeySpec s;
s = new PBEKeySpec(key.ToCharArray(), salt, ITERATION_COUNT, 32);
skey = SecretKeyFactory.GetInstance(algo).GenerateSecret(s);
aspec = new PBEParameterSpec(salt, ITERATION_COUNT);
}
