Excellence.PasswordGenerators 4.0.0

Password generators

Table of contents

• Overview
• Configurations
  • Default methods
• Password generators
  • Create a password generator
  • Add configurations
  • Generate passwords
  • Copy

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Overview

Password generators are used to create passwords be defined rules.

Every password generator use configurations that define the rules that are used during password generation.

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Configurations

Configurations are created using default constructor. Then configuration methods define the rules.

Example:

var configuration = new PasswordConfiguration();
configuration.UseItems("ABC");
configuration.UseItems('D', 'E', 'F');
configuration.UseDigits();
configuration.UseMinCount(4);
configuration.UseMaxCount(8);
configuration.UseUnique(false);

// or

var configuration2 = new PasswordConfiguration()
    .UseItems("GHIJ")
    .UseItems('K', 'L')
    .UseDigits()
    .UseMinCount(4)
    .UseMaxCount(8)
    .UseUnique(true);

// or

var configuration3 = new PasswordConfiguration()
    .UseFromJson
    (
        "{ "
        + "\"Items\": \"@#$%\", "
        + "\"MinCount\": 4, "
        + "\"MaxCount\": 8, "
        + "\"UniqueOnly\": false"
        + " }"
    );

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Default methods

PasswordConfiguration has methods to add predefined characters.

Example:

 // ABCDEFGHIJKLMNOPQRSTUVWXYZ
configuration.UseUpperCaseLetters();

// abcdefghijklmnopqrstuvwxyz
configuration.UseLowerCaseLetters();

// 0123456789
configuration.UseDigits();

// ()[]{}<>+-*/=&|^!~`@#$%_\\|;:'\"?,.
configuration.UseDefaultSpecialCharacters();

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Password generators

When configurations are ready a password generator can create passwords.

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Create a password generator

Password generators can be created using the IPasswordGeneratorFactory.

Example:

var randomGenerator = new DefaultRandomGenerator();
var shuffler = new KnuthShuffler(randomGenerator);

var passwordGeneratorFactory = new PasswordGeneratorFactory(randomGenerator, shuffler);

var passwordGenerator = passwordGeneratorFactory.CreatePasswordGenerator();

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Add configurations

Configurations are added using Use methods.

Every configuration defines its own rules so the password generator generates the passwords that match the rules of every configuration.

Example:

passwordGenerator.Use(configuration);

// or

passwordGenerator.Use(new List<IPasswordConfiguration>() { configuration2, configuration3 });

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Generate passwords

Next methods generate the passwords.

Example:

// one password
var password = passwordGenerator.Next();

// 5 passwords
var passwords = passwordGenerator.Next(5);

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Copy

Copy copies the password generator with all configurations and returns a new password generator instance. Instances are independent and adding configuration to one password generator does not affect another one.

Example:

var passwordGeneratorCopy = passwordGenerator.Copy()
                .Use(configuration3.Copy());

var anotherPassword = passwordGeneratorCopy.Next();
var anotherPasswords = passwordGeneratorCopy.Next(5);

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