Высокоуровневый слой базы данных для Android?

Это намного больше, но я думаю, что это выглядит немного более всесторонним: http://www.obviex.com/Samples/Password.aspx

///////////////////////////////////////////////////////////////////////////////
// SAMPLE: Generates random password, which complies with the strong password
//         rules and does not contain ambiguous characters.
//
// To run this sample, create a new Visual C# project using the Console
// Application template and replace the contents of the Class1.cs file with
// the code below.
//
// THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND,
// EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED
// WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A PARTICULAR PURPOSE.
// 
// Copyright (C) 2004 Obviex(TM). All rights reserved.
// 
using System;
using System.Security.Cryptography;

/// 

/// This class can generate random passwords, which do not include ambiguous 
/// characters, such as I, l, and 1. The generated password will be made of
/// 7-bit ASCII symbols. Every four characters will include one lower case
/// character, one upper case character, one number, and one special symbol
/// (such as '%') in a random order. The password will always start with an
/// alpha-numeric character; it will not start with a special symbol (we do
/// this because some back-end systems do not like certain special
/// characters in the first position).
/// 
public class RandomPassword
{
    // Define default min and max password lengths.
    private static int DEFAULT_MIN_PASSWORD_LENGTH  = 8;
    private static int DEFAULT_MAX_PASSWORD_LENGTH  = 10;

    // Define supported password characters divided into groups.
    // You can add (or remove) characters to (from) these groups.
    private static string PASSWORD_CHARS_LCASE  = "abcdefgijkmnopqrstwxyz";
    private static string PASSWORD_CHARS_UCASE  = "ABCDEFGHJKLMNPQRSTWXYZ";
    private static string PASSWORD_CHARS_NUMERIC= "23456789";
    private static string PASSWORD_CHARS_SPECIAL= "*$-+?_&=!%{}/";

    /// 

    /// Generates a random password.
    /// 
    /// 
    /// Randomly generated password.
    /// 
    /// 
    /// The length of the generated password will be determined at
    /// random. It will be no shorter than the minimum default and
    /// no longer than maximum default.
    /// 
    public static string Generate()
    {
        return Generate(DEFAULT_MIN_PASSWORD_LENGTH, 
                        DEFAULT_MAX_PASSWORD_LENGTH);
    }

    /// 

    /// Generates a random password of the exact length.
    /// 
    /// 
    /// Exact password length.
    /// 
    /// 
    /// Randomly generated password.
    /// 
    public static string Generate(int length)
    {
        return Generate(length, length);
    }

    /// 

    /// Generates a random password.
    /// 
    /// 
    /// Minimum password length.
    /// 
    /// 
    /// Maximum password length.
    /// 
    /// 
    /// Randomly generated password.
    /// 
    /// 
    /// The length of the generated password will be determined at
    /// random and it will fall with the range determined by the
    /// function parameters.
    /// 
    public static string Generate(int   minLength,
                                  int   maxLength)
    {
        // Make sure that input parameters are valid.
        if (minLength <= 0 || maxLength <= 0 || minLength > maxLength)
            return null;

        // Create a local array containing supported password characters
        // grouped by types. You can remove character groups from this
        // array, but doing so will weaken the password strength.
        char[][] charGroups = new char[][] 
        {
            PASSWORD_CHARS_LCASE.ToCharArray(),
            PASSWORD_CHARS_UCASE.ToCharArray(),
            PASSWORD_CHARS_NUMERIC.ToCharArray(),
            PASSWORD_CHARS_SPECIAL.ToCharArray()
        };

        // Use this array to track the number of unused characters in each
        // character group.
        int[] charsLeftInGroup = new int[charGroups.Length];

        // Initially, all characters in each group are not used.
        for (int i=0; i
/// Illustrates the use of the RandomPassword class.
/// 
public class RandomPasswordTest
{
    /// 

    /// The main entry point for the application.
    /// 
    [STAThread]
    static void Main(string[] args)
    {
        // Print 100 randomly generated passwords (8-to-10 char long).
        for (int i=0; i<100; i++)
            Console.WriteLine(RandomPassword.Generate(8, 10));
    }
}
//
// END OF FILE
///////////////////////////////////////////////////////////////////////////////