Navajo

Password Validator & Strength Evaluator

Navajo is named in honor of the famed code talkers of the Second World War.

Usage

Validating Password

NSString *password = @"abc123"
NJOPasswordValidator *validator = [NJOPasswordValidator standardValidator];

NSArray *failingRules = nil;
BOOL isValid = [validator validatePassword:password
                              failingRules:&failingRules];

if (!isValid) {
    for (id <NJOPasswordRule> rule in failingRules) {
        NSLog(@"- %@", [rule localizedErrorDescription]);
    }
}

Available Validation Rules

• Allowed Characters
• Required Characters (e.g. lowercase, uppercase, decimal, symbol)
• Non-Dictionary Word
• Minimum / Maximum Length
• Predicate Match
• Regular Expression Match
• Block Evaluation

Evaluating Password Strength

Password strength is evaluated in terms of information entropy.

NJOPasswordStrength strength = [NJOPasswordStrengthEvaluator strengthOfPassword:password];
NSLog(@"%@", [NJOPasswordStrengthEvaluator localizedStringForPasswordStrength:strength]);

Contact

Mattt Thompson @mattt

License

Navajo is available under the MIT license. See the LICENSE file for more info.