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
我使用此代码生成密码与字母，数字和非字母数字字符的平衡组合。
public static string GeneratePassword(int Length, int NonAlphaNumericChars)
{
string allowedChars = "abcdefghijkmnopqrstuvwxyzABCDEFGHJKLMNOPQRSTUVWXYZ0123456789";
string allowedNonAlphaNum = "!@#$%^&*()_-+=[{]};:<>|./?";
string pass = "";
Random rd = new Random(DateTime.Now.Millisecond);
for (int i = 0; i < Length; i++)
{
if (rd.Next(1) > 0 && NonAlphaNumericChars > 0)
{
pass += allowedNonAlphaNum[rd.Next(allowedNonAlphaNum.Length)];
NonAlphaNumericChars--;
}
else
{
pass += allowedChars[rd.Next(allowedChars.Length)];
}
}
return pass;
}
其他回答
我不喜欢Membership.GeneratePassword()创建的密码，因为它们太丑了，有太多特殊字符。
这段代码生成一个10位不太难看的密码。
string password = Guid.NewGuid().ToString("N").ToLower()
.Replace("1", "").Replace("o", "").Replace("0","")
.Substring(0,10);
当然，我可以使用一个Regex来做所有的替换，但这是更具可读性和可维护性的IMO。
我创建的这个方法类似于会员资格提供程序中可用的方法。如果你不想在某些应用程序中添加web引用，这是很有用的。
效果很好。
public static string GeneratePassword(int Length, int NonAlphaNumericChars)
{
string allowedChars = "abcdefghijkmnopqrstuvwxyzABCDEFGHJKLMNOPQRSTUVWXYZ0123456789";
string allowedNonAlphaNum = "!@#$%^&*()_-+=[{]};:<>|./?";
Random rd = new Random();
if (NonAlphaNumericChars > Length || Length <= 0 || NonAlphaNumericChars < 0)
throw new ArgumentOutOfRangeException();
char[] pass = new char[Length];
int[] pos = new int[Length];
int i = 0, j = 0, temp = 0;
bool flag = false;
//Random the position values of the pos array for the string Pass
while (i < Length - 1)
{
j = 0;
flag = false;
temp = rd.Next(0, Length);
for (j = 0; j < Length; j++)
if (temp == pos[j])
{
flag = true;
j = Length;
}
if (!flag)
{
pos[i] = temp;
i++;
}
}
//Random the AlphaNumericChars
for (i = 0; i < Length - NonAlphaNumericChars; i++)
pass[i] = allowedChars[rd.Next(0, allowedChars.Length)];
//Random the NonAlphaNumericChars
for (i = Length - NonAlphaNumericChars; i < Length; i++)
pass[i] = allowedNonAlphaNum[rd.Next(0, allowedNonAlphaNum.Length)];
//Set the sorted array values by the pos array for the rigth posistion
char[] sorted = new char[Length];
for (i = 0; i < Length; i++)
sorted[i] = pass[pos[i]];
string Pass = new String(sorted);
return Pass;
}
如何在c#中生成随机密码。 输出:(https://prnt.sc/11fac8v) 运行:https://onlinegdb.com/HJe5OHBLu
private static Random random = new Random();
public static void Main()
{
Console.WriteLine("Random password with length of 8 character.");
Console.WriteLine("===========================================");
Console.WriteLine("Capital latters : 2");
Console.WriteLine("Number latters : 2");
Console.WriteLine("Special latters : 2");
Console.WriteLine("Small latters : 2");
Console.WriteLine("===========================================");
Console.Write("The Random Password : ");
Console.WriteLine(RandomStringCap(2) + RandomStringNum(2) + RandomStringSpe(2) + RandomStringSml(2));
Console.WriteLine("===========================================");
}
public static string RandomStringCap(int length)
{
const string chars = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
return new string(Enumerable.Repeat(chars, length)
.Select(s => s[random.Next(s.Length)]).ToArray());
}
public static string RandomStringNum(int length)
{
const string chars = "0123456789";
return new string(Enumerable.Repeat(chars, length)
.Select(s => s[random.Next(s.Length)]).ToArray());
}
public static string RandomStringSml(int length)
{
const string chars = "abcdefghijklmnopqrstuvwxyz";
return new string(Enumerable.Repeat(chars, length)
.Select(s => s[random.Next(s.Length)]).ToArray());
}
public static string RandomStringSpe(int length)
{
const string chars = "!@#$%^&*_-=+";
return new string(Enumerable.Repeat(chars, length)
.Select(s => s[random.Next(s.Length)]).ToArray());
}
我使用此代码生成密码与字母，数字和非字母数字字符的平衡组合。
public static string GeneratePassword(int Length, int NonAlphaNumericChars)
{
string allowedChars = "abcdefghijkmnopqrstuvwxyzABCDEFGHJKLMNOPQRSTUVWXYZ0123456789";
string allowedNonAlphaNum = "!@#$%^&*()_-+=[{]};:<>|./?";
string pass = "";
Random rd = new Random(DateTime.Now.Millisecond);
for (int i = 0; i < Length; i++)
{
if (rd.Next(1) > 0 && NonAlphaNumericChars > 0)
{
pass += allowedNonAlphaNum[rd.Next(allowedNonAlphaNum.Length)];
NonAlphaNumericChars--;
}
else
{
pass += allowedChars[rd.Next(allowedChars.Length)];
}
}
return pass;
}
这个包允许你生成一个随机密码，同时流利地指出它应该包含哪些字符(如果需要):
https://github.com/prjseal/PasswordGenerator/
例子:
var pwd = new Password().IncludeLowercase().IncludeUppercase().IncludeSpecial();
var password = pwd.Next();
