password-validator vs validator vs zxcvbn
Password Validation Libraries
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Password Validation Libraries

These libraries provide various functionalities for validating and assessing the strength of passwords in web applications. They help developers ensure that users create secure passwords, enhancing overall application security. Each library has its unique approach and features, catering to different needs in password management and validation.

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password-validator028435.8 kB7-MIT
validator023,761817 kB3753 months agoMIT
zxcvbn015,901-1419 years agoMIT

Feature Comparison: password-validator vs validator vs zxcvbn

Password Strength Assessment

  • password-validator:

    This library allows you to define custom password strength rules, such as minimum length, required characters, and patterns. It provides feedback on whether a password meets the specified criteria, ensuring compliance with security policies.

  • validator:

    While primarily focused on data validation, 'validator' does not specifically assess password strength but can be used in conjunction with other libraries to validate password format and structure, such as length and character types.

  • zxcvbn:

    'zxcvbn' offers a sophisticated analysis of password strength by evaluating the entropy and predictability of the password. It provides a score and feedback on how to improve password strength, making it user-friendly.

Customization

  • password-validator:

    Highly customizable, allowing developers to define their own rules and policies for password creation. You can easily adjust the complexity requirements based on your application's needs, making it flexible for various use cases.

  • validator:

    Less focused on password-specific customization, but it offers a variety of validation functions that can be adapted for different input types. It is more suited for general-purpose validation rather than password-specific rules.

  • zxcvbn:

    Limited customization options, as it primarily focuses on analyzing password strength rather than enforcing specific rules. Its strength lies in its ability to provide insights based on common password patterns.

Ease of Use

  • password-validator:

    Designed for simplicity, this library is easy to integrate and use. Developers can quickly implement password validation with minimal setup, making it accessible for projects of all sizes.

  • validator:

    Offers a straightforward API for validation tasks, but may require additional setup for password-specific validation. It is user-friendly for general validation but may not be as intuitive for password rules.

  • zxcvbn:

    Although it provides detailed feedback on password strength, it may require more understanding of its scoring system for effective use. Developers need to familiarize themselves with its output to provide meaningful feedback to users.

Performance

  • password-validator:

    Lightweight and efficient, it performs validations quickly without significant overhead, making it suitable for applications where performance is critical during user input.

  • validator:

    Performance is generally good for validation tasks, but it may not be as optimized specifically for password validation compared to dedicated libraries. It performs well for various input validations but may have overhead for complex rules.

  • zxcvbn:

    While it provides in-depth analysis, it may introduce some latency due to its comprehensive evaluation of password strength. However, the trade-off is valuable insights into password security.

Community and Support

  • password-validator:

    Has a growing community with adequate documentation and examples, making it easier for developers to find support and resources for implementation.

  • validator:

    Well-established with extensive documentation and community support, making it a reliable choice for developers looking for validation solutions across various input types.

  • zxcvbn:

    Supported by a strong community and backed by research, it has good documentation and examples, providing developers with the resources needed to effectively implement password strength assessments.

How to Choose: password-validator vs validator vs zxcvbn

  • password-validator:

    Choose 'password-validator' if you need a simple and customizable solution for enforcing password policies. It allows you to define specific rules for password complexity, making it ideal for applications that require tailored password validation.

  • validator:

    Select 'validator' if you need a comprehensive validation library that covers not just passwords but also other input types. It provides a wide range of validation functions, making it suitable for applications that require extensive data validation beyond just passwords.

  • zxcvbn:

    Opt for 'zxcvbn' if you want a library that evaluates password strength based on real-world data and heuristics. It provides a more nuanced assessment of password strength, making it ideal for applications that prioritize user education on password security.

Similar Npm Packages to password-validator

password-validator is a robust library designed to validate password strength in JavaScript applications. It allows developers to define custom password policies and check if a given password meets the specified criteria, such as length, character variety, and more. This ensures that users create strong passwords, enhancing the security of applications. While password-validator is a great choice for password validation, there are other libraries that provide similar functionalities. Here are a couple of alternatives:

  • validator is a popular library that provides a wide range of string validation and sanitization functions. While it is not solely focused on password validation, it includes several utilities that can be used to validate passwords as part of broader input validation. If you need a comprehensive solution for validating various types of input data, including passwords, validator is a solid choice. Its extensive set of features allows for flexible and customizable validation rules.
  • zxcvbn is a password strength estimator that provides feedback on password strength based on various criteria, including common patterns and user behavior. Unlike traditional validators, zxcvbn analyzes the password against a large dataset of common passwords and patterns to provide a score and suggestions for improvement. If you want to enhance user experience by giving real-time feedback on password strength and suggestions for stronger alternatives, zxcvbn is an excellent option.

For a detailed comparison of these packages, check out the following link: Comparing password-validator vs validator vs zxcvbn.

Similar Npm Packages to validator

validator is a popular library for validating and sanitizing strings in JavaScript applications. It provides a wide range of validation functions for various data types, making it easier to ensure that input data meets specific criteria. While validator is a robust solution for string validation, there are several alternatives available that cater to different validation needs. Here are a few notable alternatives:

  • express-validator is a middleware for validating and sanitizing request data in Express.js applications. Built on top of the validator library, it provides a set of middlewares that can be used to validate incoming data from HTTP requests. This library is particularly useful for developers building REST APIs or web applications with Express, as it allows for seamless integration of validation logic directly into the request handling process. If you are working with Express and need to validate user inputs, express-validator is an excellent choice.

  • is-my-json-valid is a JSON schema validator that allows you to validate JSON objects against a defined schema. It is particularly useful for applications that need to ensure that the data structure of JSON objects adheres to specific requirements. This library is lightweight and fast, making it suitable for scenarios where performance is critical. If your application heavily relies on JSON data and you need to enforce strict validation rules, is-my-json-valid can be a great option.

  • joi is a powerful schema description language and data validator for JavaScript objects. It allows developers to create complex validation rules and provides a rich API for defining schemas. joi is versatile and can be used for both server-side and client-side validation, making it suitable for a wide range of applications. If you require a more comprehensive validation solution that can handle complex data structures and relationships, joi is an excellent choice.

To explore how validator compares with express-validator, is-my-json-valid, and joi, check out the comparison: Comparing express-validator vs is-my-json-valid vs joi vs validator.

Similar Npm Packages to zxcvbn

zxcvbn is a password strength estimator library that provides a way to assess the strength of a password based on various criteria. Developed by Dropbox, zxcvbn evaluates passwords against common patterns, dictionary words, and user data to provide a score that indicates how secure a password is. This library is particularly useful for developers looking to enhance security measures in their applications by encouraging users to create stronger passwords.

While zxcvbn is a robust solution for password strength estimation, there are alternative libraries that also provide similar functionality. Here are a few notable alternatives:

  • owasp-password-strength-test is a library that implements the OWASP (Open Web Application Security Project) password strength testing guidelines. It evaluates passwords based on a set of rules and criteria defined by OWASP, ensuring that the passwords meet specific security standards. This library is suitable for developers who want to adhere to established security practices and provide users with clear feedback on password strength based on industry standards.
  • password-validator is a simple and flexible library that allows developers to define custom password validation rules. With password-validator, you can set criteria such as minimum length, required characters, and other specific rules that a password must meet. This library is ideal for applications that require tailored password policies and want to enforce specific rules for user-created passwords.

To explore how zxcvbn compares with owasp-password-strength-test and password-validator, check out the comparison: Comparing owasp-password-strength-test vs password-validator vs zxcvbn.

README for password-validator

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npm version npm downloads gh action build status coverage status

Install

npm install password-validator

Usage

var passwordValidator = require('password-validator');

// Create a schema
var schema = new passwordValidator();

// Add properties to it
schema
.is().min(8)                                    // Minimum length 8
.is().max(100)                                  // Maximum length 100
.has().uppercase()                              // Must have uppercase letters
.has().lowercase()                              // Must have lowercase letters
.has().digits(2)                                // Must have at least 2 digits
.has().not().spaces()                           // Should not have spaces
.is().not().oneOf(['Passw0rd', 'Password123']); // Blacklist these values

// Validate against a password string
console.log(schema.validate('validPASS123'));
// => true
console.log(schema.validate('invalidPASS'));
// => false

// Get a full list of rules which failed
console.log(schema.validate('joke', { list: true }));
// => [ 'min', 'uppercase', 'digits' ]

Advanced usage

Details about failed validations

Sometimes just knowing that the password validation failed or what failed is not enough and it is important too get more context. In those cases, details option can be used to get more details about what failed.

console.log(schema.validate('joke', { details: true }));

The above code will output:

[
  {
    validation: 'min',
    arguments: 8,
    message: 'The string should have a minimum length of 8 characters'
  },
  {
    validation: 'uppercase',
    message: 'The string should have a minimum of 1 uppercase letter'
  },
  {
    validation: 'digits',
    arguments: 2,
    message: 'The string should have a minimum of 2 digits'
  }
]

Custom validation messages

The validation messages can be overriden by providing a description of the validation. For example:

schema.not().uppercase(8, 'maximum 8 chars in CAPS please')

The above validation, on failure, should return the following object:

  {
    validation: 'min',
    arguments: 8,
    inverted: true,
    message: 'maximum 8 chars in CAPS please'
  },

Plugins

Plugin functions can be added to the password validator schema for custom password validation going beyond the rules provided here. For example:

var validator = require('validator');
var passwordValidator = require('password-validator');

var schema = new passwordValidator()
    .min(3, 'Password too small')
    .usingPlugin(validator.isEmail, 'Password should be an email');

schema.validate('not-an-email', { details: true })
// [{ validation: 'usingPlugin', arguments: [Function: isEmail], message: 'Password should be an email' }]

Rules

Rules supported as of now are:

RulesDescriptions
digits([count], [description])specifies password must include digits (optionally provide count paramenter to specify at least n digits)
letters([count], [description])specifies password must include letters (optionally provide count paramenter to specify at least n letters)
lowercase([count], [description])specifies password must include lowercase letters (optionally provide count paramenter to specify at least n lowercase letters)
uppercase([count], [description])specifies password must include uppercase letters (optionally provide count paramenter to specify at least n uppercase letters)
symbols([count], [description])specifies password must include symbols (optionally provide count paramenter to specify at least n symbols)
spaces([count], [description])specifies password must include spaces (optionally provide count paramenter to specify at least n spaces)
min(len, [description])specifies minimum length
max(len, [description])specifies maximum length
oneOf(list)specifies the whitelisted values
not([regex], [description])inverts the result of validations applied next
is()inverts the effect of not()
has([regex], [description])inverts the effect of not() and applies a regex (optional)
usingPlugin(fn, [description])Executes custom function and include its result in password validation

Options

The following options can be passed to validate method:

  • list - If set, validate method returns a list of rules which failed instead of true/false.

Resources

For APIs of other older versions, head to Wiki.

License

MIT License

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