- Passay Tutorial
- Passay − Home
- Passay − Overview
- Passay − environment Setup
- Validation/Generation
- Passay − Password Validation
- Passay − Customized Messages
- Passay − M of N Rules
- Passay − Password Generation
- Positive Matching Rules
- passay − AllowedCharacterRule
- Passay − AllowedRegexRule
- Passay −CharacterRule
- passay − LengthRule
- Passay − CharacterCharacteristicsRule
- Passay − LengthComplexityRule
- Negative Matching Rules
- Passay − lllegalCharacterRule
- Passay − NumberRangeRule
- Passay − WhitespaceRule
- Passay − DictionaryRule
- Passay − DictionarySubstringRule
- Passay − HistoryRule
- passay − RepeatCharacterRegexRule
- Passay − usernameRule
- Passay Useful Resources
- Passay - Quick Guide
- Passay - Resources
- Passay - Discussion
Passay - LengthComplexityRule
LengthComplexityRule helps in defining the applicable rule on a password based on its length. Consider the following policy.
If length of password is in between 1 to 5 characters, only lower case alphabets are allowed.
If length of password is in between 6 to 8 characters, then only a, b and c are allowed.
Example
The below example shows the validation of a password against above policy using Passay library.
import org.passay.AllowedCharacterRule; import org.passay.CharacterRule; import org.passay.EnglishCharacterData; import org.passay.LengthComplexityRule; import org.passay.PasswordData; import org.passay.PasswordValidator; import org.passay.RuleResult; public class PassayExample { public static void main(String[] args) { LengthComplexityRule lengthComplexityRule = new LengthComplexityRule(); //Rule: Password of 1 to 5 characters should contains lower case alphabets only lengthComplexityRule.addRules("[1,5]", new CharacterRule(EnglishCharacterData.LowerCase, 5)); //8 and 16 characters lengthComplexityRule.addRules("[6,8]", new AllowedCharacterRule(new char[] { 'a', 'b', 'c' })); PasswordValidator validator = new PasswordValidator(lengthComplexityRule); PasswordData password = new PasswordData("abcdef"); RuleResult result = validator.validate(password); if(result.isValid()){ System.out.println("Password validated."); }else{ System.out.println("Invalid Password: " + validator.getMessages(result)); } } }
Output
Invalid Password: [ Password contains the illegal character 'd'., Password contains the illegal character 'e'., Password contains the illegal character 'f'., Password meets 0 complexity rules, but 1 are required.]
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