Provide check digit algorithms and calculators written in Go

A C# library for validating and generating credit card numbers.

Generation and verification of card numbers using Luhn's algorithm.

A Java library for generating mathematically-valid credit card numbers for software testing. The API provides customizable criteria for generation, and is extensible to apply to any payment card type which uses Luhn validation (not limited to just credit cards).

A .net library to identify credit card number and cvv

Python library to generate and validate credit card numbers. Features a fast, offline BIN lookup using a local database. Zero dependencies, no API keys needed. Perfect for generating test data.

🔒 An easy-to-use check digit library for data validation

This Python code scrapes Google search results then applies sentiment analysis, generates text summaries, and ranks keywords.

Minimal, zero-dependency implementation of the Luhn Algorithm for PHP.

Fake credit card generator and validator. This is only meant for educational purpose.

Simple validator for identification numbers based on the Luhn algorithm

Credit Card Checker And Generator Using Luhn Algorithm

A small guide on credit card security, and ways hackers exploit them

PHP implementation of the Luhn algorithm.

Helper classes to calculate and validate ckecksums.

A better and safer way to display your primary keys in urls or in your app

A full TypeScript EAN, UPC, IMEI, EID, ISBN & card validation tool

Luhn (Modulo 10 or mod 10 algorithm) for PHP

Fastest JavaScript implementation of the Luhn algorithm

Pragmatic data validation