Password Validator

A command-line tool for rating a password ❌Invalid ⚠️Weak or ✅Strong

Approach & Design Decisions

Enclosed is a simplified dependency graph for the functional modules created.

I determined the logic required to be handled by each unit and created an initial directory structure, moving functionality into folders as I went along.

I created the root file which is index.js (a default hook used for the Node.js modular system) and decided the functionality that should be their own modules were - the validators - the word collections - the passwordRater itself

The root module, found at index.js., is dependent on two modules which handle validation -complexityValidators module -violationValidators module

Each validation module has its own methods. The tool validates the following categories using these validation methods.

• At least 6 characters long
• Shorter than 24 characters long (additional)
• Not composed of repeated characters
• Not composed of a digit sequence
• Not composed of an alphabetic sequence
• No "Guessable" inputs (bad and common paswords)
• No Proper Names
• No Dictionary Words
• No Keyboard Patterns (eg. qwerty or ytrewq)

Extensibility

• The validation modules are organized in such a way as to permit the addition of additional violation or complexity-evaluation methods.

Readability

• I clearly documented the purpose, inputs, and outputs of all functions with annotations. All functions are written plainly and without the use of external libraries (such as lodash).

Instructions

1. Ensure Node is installed with node -v
2. If not installed, visit Node.js. Any version >5.0 will do.
3. npm install
4. npm start