Validating Complexity and Length of Passwords
Q
How to write a regular expression to check the complexity and length of passwords with the following requirements:
- Password must be at least 6 characters long
- Password must include at least including 1 upper case letter
- Password must include at least including 1 lower case letter
- Password must include at least including 1 special character
- Password must include at least including 1 numeric digit
For example, Br1ckBe@k is a valid password.
✍: Guest
A
Here is the regular expression to validate passwords that meet your requirements:
(?=.*[A-Z])(?=.*[a-z])(?=.*\W)(?=.*\d).{8,}
(?=.*[A-Z]) - Look-ahead for a upper case letter
(?=.*[a-z]) - Look-ahead for a lower case letter
(?=.*\W) - Look-ahead for a special character
(?=.*\d) - Look-ahead for a numeric digit
.{8,} - Matches 8 or more characters
2013-01-29, 0👍, 0💬