如何检查密码强度? [英] How to check password strength?
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问题描述
我如何检查密码的强度(作为字符串
)使用.NET Framework?
How can I check the strength of a password (as a string
) using the .Net Framework?
推荐答案
但基本逻辑之一:
enum PasswordScore
{
Blank = 0,
VeryWeak = 1,
Weak = 2,
Medium = 3,
Strong = 4,
VeryStrong = 5
}
public class PasswordAdvisor
{
public static PasswordScore CheckStrength(string password)
{
int score = 1;
if (password.Length < 1)
return PasswordScore.Blank;
if (password.Length < 4)
return PasswordScore.VeryWeak;
if (password.Length >= 8)
score++;
if (password.Length >= 12)
score++;
if (Regex.Match(password, @"/\d+/", RegexOptions.ECMAScript))
score++;
if (Regex.Match(password, @"/[a-z]/", RegexOptions.ECMAScript) &&
Regex.Match(password, @"/[A-Z]/", RegexOptions.ECMAScript))
score++;
if (Regex.Match(password, @"/.[!,@,#,$,%,^,&,*,?,_,~,-,£,(,)]/", RegexOptions.ECMAScript))
score++;
return (PasswordScore)score;
}
}
参考: http://passwordadvisor.com/$c$cAspNet.aspx
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