如何使用正则表达式检查密码复杂性？ [英] How do I check for password complexity using regex?

问题描述

我需要一个正则表达式来检查以下内容：



1.至少8个字符

2.至少落入三个以下四类：

- 至少一个大写字符

- 至少一个小写字符

- 至少一个数字

- 至少一个特殊字符



我在C＃.NET工作，并在服务器端进行密码复杂性检查（从网格中） 。但是，如果用户填写了50个密码框而其中一个不符合复杂性，则所有密码框都将被清除。所以，我正在寻找一个客户端解决方案（或任何其他可行的选项）。



谢谢！

I need a regex that checks for the following:

1. At least 8 characters
2. Falls into at least three of the following four categories:
- At least one uppercase character
- At least one lowercase character
- At least one number
- At least one special character

I'm working in C#.NET and was doing password complexity check (from a grid) on the server side. However, if the user fills in 50 password boxes and one doesn't meet complexity, all are wiped out. So, I'm looking for a client solution (or any other viable option).

Thanks!

推荐答案

使用Regex对许多验证非常有用，对于测量复杂性并不是一个好主意。问题很简单。有关解决方案，请参阅我过去的答案：

如何在C＃.net 中验证有效密码[ ^ ]，

正则表达式验证密码 [ ^ ]。



简单，不是不是吗？

-SA

Using Regex, very useful for many validations, is not a good idea for measuring complexity. The problem is very simple. For a solution, please see my past answers:
how to authenticate Valid password in C#.net[^],
regular expression to validate the password[^].

Simple, isn't it?

—SA

请尝试以下正则表达式。



（？！^ [0-9] *

Try below Regular expression.

(?!^[0-9]*

）（？！^ [a-zA-Z] *

)(?!^[a-zA-Z]*

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