当我们网站上的用户丢失密码并转到丢失密码页面时,我们需要给他一个新的临时密码。我并不介意这有多随机,或者它是否符合所有“所需的”强密码规则,我想做的只是给他们一个他们以后可以更改的密码。

该应用程序是用c#编写的Web应用程序。所以我想刻薄一点,走一条简单的路线,用Guid的一部分。即。

Guid.NewGuid().ToString("d").Substring(1,8)

Suggesstions吗?想法吗?


当前回答

对于这种类型的密码,我倾向于使用可能生成更容易“使用”的密码的系统。短的,通常由发音片段和一些数字组成,并且没有字符间的歧义(这是0还是O?是1还是I?)类似的

string[] words = { 'bur', 'ler', 'meh', 'ree' };
string word = "";

Random rnd = new Random();
for (i = 0; i < 3; i++)
   word += words[rnd.Next(words.length)]

int numbCount = rnd.Next(4);
for (i = 0; i < numbCount; i++)
  word += (2 + rnd.Next(7)).ToString();

return word;

(直接在浏览器中输入,因此仅作为参考。同时,要多加单词)。

其他回答

由于Random是不安全的,RNGCryptoServiceProvider是过时的,我最终这样做:

  // possible characters that password can have
  private const string passChars =
       "ABCDEFGHIJKLMNOPQRSTUVWXYZ" +
       "abcdefghijklmnopqrstuvwxyz" +
       "0123456789" +
       "!@#$%.-_"
       ;

    public static string GetRandomPassword(int length)
    {
        char[] p = new char[length];
        for (int i = 0; i < length; i++)
            p[i] = passChars[RandomNumberGenerator.GetInt32(0, passChars.Length)];
        return new string(p);
    }

插入一个定时器:timer1, 2个按钮:button1, button2, 1个textBox: textBox1,和一个comboBox: comboBox1。请务必申报:

int count = 0;

源代码:

 private void button1_Click(object sender, EventArgs e)
    {
    // This clears the textBox, resets the count, and starts the timer
        count = 0;
        textBox1.Clear();
        timer1.Start();
    }

    private void timer1_Tick(object sender, EventArgs e)
    {
    // This generates the password, and types it in the textBox
        count += 1;
            string possible = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890";
            string psw = "";
            Random rnd = new Random { };
            psw += possible[rnd.Next(possible.Length)];
            textBox1.Text += psw;
            if (count == (comboBox1.SelectedIndex + 1))
            {
                timer1.Stop();
            }
    }
    private void Form1_Load(object sender, EventArgs e)
    {
        // This adds password lengths to the comboBox to choose from.
        comboBox1.Items.Add("1");
        comboBox1.Items.Add("2");
        comboBox1.Items.Add("3");
        comboBox1.Items.Add("4");
        comboBox1.Items.Add("5");
        comboBox1.Items.Add("6");
        comboBox1.Items.Add("7");
        comboBox1.Items.Add("8");
        comboBox1.Items.Add("9");
        comboBox1.Items.Add("10");
        comboBox1.Items.Add("11");
        comboBox1.Items.Add("12");
    }
    private void button2_click(object sender, EventArgs e)
    {
        // This encrypts the password
        tochar = textBox1.Text;
        textBox1.Clear();
        char[] carray = tochar.ToCharArray();
        for (int i = 0; i < carray.Length; i++)
        {
            int num = Convert.ToInt32(carray[i]) + 10;
            string cvrt = Convert.ToChar(num).ToString();
            textBox1.Text += cvrt;
        }
    }

这是我快速拼凑的东西。

    public string GeneratePassword(int len)
    {
        string res = "";
        Random rnd = new Random();
        while (res.Length < len) res += (new Func<Random, string>((r) => {
            char c = (char)((r.Next(123) * DateTime.Now.Millisecond % 123)); 
            return (Char.IsLetterOrDigit(c)) ? c.ToString() : ""; 
        }))(rnd);
        return res;
    }
 Generate random password of specified length with 
  - Special characters   
  - Number
  - Lowecase
  - Uppercase

  public static string CreatePassword(int length = 12)
    {
        const string lower = "abcdefghijklmnopqrstuvwxyz";
        const string upper = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
        const string number = "1234567890";
        const string special = "!@#$%^&*";

        var middle = length / 2;
        StringBuilder res = new StringBuilder();
        Random rnd = new Random();
        while (0 < length--)
        {
            if (middle == length)
            {
                res.Append(number[rnd.Next(number.Length)]);
            }
            else if (middle - 1 == length)
            {
                res.Append(special[rnd.Next(special.Length)]);
            }
            else
            {
                if (length % 2 == 0)
                {
                    res.Append(lower[rnd.Next(lower.Length)]);
                }
                else
                {
                    res.Append(upper[rnd.Next(upper.Length)]);
                }
            }
        }
        return res.ToString();
    }
public string Sifre_Uret(int boy, int noalfa)
{

    //  01.03.2016   
    // Genel amaçlı şifre üretme fonksiyonu


    //Fonskiyon 128 den büyük olmasına izin vermiyor.
    if (boy > 128 ) { boy = 128; }
    if (noalfa > 128) { noalfa = 128; }
    if (noalfa > boy) { noalfa = boy; }


    string passch = System.Web.Security.Membership.GeneratePassword(boy, noalfa);

    //URL encoding ve Url Pass + json sorunu yaratabilecekler pass ediliyor.
    //Microsoft Garanti etmiyor. Alfa Sayısallar Olabiliyorimiş . !@#$%^&*()_-+=[{]};:<>|./?.
    //https://msdn.microsoft.com/tr-tr/library/system.web.security.membership.generatepassword(v=vs.110).aspx


    //URL ve Json ajax lar için filtreleme
    passch = passch.Replace(":", "z");
    passch = passch.Replace(";", "W");
    passch = passch.Replace("'", "t");
    passch = passch.Replace("\"", "r");
    passch = passch.Replace("/", "+");
    passch = passch.Replace("\\", "e");

    passch = passch.Replace("?", "9");
    passch = passch.Replace("&", "8");
    passch = passch.Replace("#", "D");
    passch = passch.Replace("%", "u");
    passch = passch.Replace("=", "4");
    passch = passch.Replace("~", "1");

    passch = passch.Replace("[", "2");
    passch = passch.Replace("]", "3");
    passch = passch.Replace("{", "g");
    passch = passch.Replace("}", "J");


    //passch = passch.Replace("(", "6");
    //passch = passch.Replace(")", "0");
    //passch = passch.Replace("|", "p");
    //passch = passch.Replace("@", "4");
    //passch = passch.Replace("!", "u");
    //passch = passch.Replace("$", "Z");
    //passch = passch.Replace("*", "5");
    //passch = passch.Replace("_", "a");

    passch = passch.Replace(",", "V");
    passch = passch.Replace(".", "N");
    passch = passch.Replace("+", "w");
    passch = passch.Replace("-", "7");





    return passch;



}