/// <summary>
/// Encrypted version of PlayerPrefs.SetString(), stored key and value is encrypted in player prefs
/// </summary>
public static void SetEncryptedString(string key, string value)
{
string encryptedKey = SimpleEncryption.EncryptString(key);
string encryptedValue = SimpleEncryption.EncryptString(value);
// Store the encrypted key and value (with relevant identifying prefixes) in PlayerPrefs
PlayerPrefs.SetString(KEY_PREFIX + encryptedKey, VALUE_STRING_PREFIX + encryptedValue);
}
/// <summary>
/// Encrypts the specified int value and returns an encrypted string
/// </summary>
public static string EncryptInt(int value)
{
// Convert the int value into its 4 bytes
byte[] bytes = BitConverter.GetBytes(value);
// Represent those bytes as a base 64 string
string base64 = Convert.ToBase64String(bytes);
// Return the encrypted version of that base 64 string
return(SimpleEncryption.EncryptString(base64));
}
/// <summary>
/// Encrypted version of PlayerPrefs.GetString(), an unencrypted key is passed and the value is returned decrypted
/// </summary>
public static string GetEncryptedString(string key, string defaultValue = "")
{
// Encrypt and prefix the key so we can look it up from player prefs
string encryptedKey = KEY_PREFIX + SimpleEncryption.EncryptString(key);
// Look up the encrypted value
string fetchedString = PlayerPrefs.GetString(encryptedKey);
if (!string.IsNullOrEmpty(fetchedString))
{
// Strip out the type identifier character
fetchedString = fetchedString.Remove(0, 1);
// Decrypt and return the string value
return(SimpleEncryption.DecryptString(fetchedString));
}
else
{
// No existing player pref value, so return defaultValue instead
return(defaultValue);
}
}
