[20220628] Password Validation Regex

[JuHyun419]

Password Validation Regex

// 특수문자 + 영문자 + 숫자 포함 조합(공백 X)
^(?=.*[0-9])(?=.*[a-z])(?=.*[A-Z])(?=.*[@#$%^&+=])(?=\\S+$).{4,}$

^                 # start-of-string
(?=.*[0-9])       # a digit must occur at least once
(?=.*[a-z])       # a lower case letter must occur at least once
(?=.*[A-Z])       # an upper case letter must occur at least once
(?=.*[@#$%^&+=])  # a special character must occur at least once you can replace with your special characters
(?=\\S+$)         # no whitespace allowed in the entire string
.{4,}             # anything, at least six places though
$                 # end-of-string

// 특수문자 + (영문자 or 숫자) 조합으로 8~16자 사이
^(?=.*[0-9a-zA-Z])(?=.*[!@#\$%^&*])(?=\\S+\$).{8,16}\$

// 특수문자 + 영문자 + 숫자 중 2가지 이상 조합으로 8~16자 사이
^((?=.*[0-9])(?=.*[a-zA-Z])|(?=.*[0-9])(?=.*[!@#$%^&*?-_])|(?=.*[a-zA-Z])(?=.*[@#$%!\-_?&]))(?=\S+$).{8,16}$

References

• https://zzang9ha.tistory.com/322?category=887593
• https://stackoverflow.com/questions/23214434/regular-expression-in-android-for-password-field