JSTP

JSTP is a simple TypeScript package for generating and managing secure one-time passwords (OTPs) with Redis integration. JSTP provides flexible token generation with customizable formats and a Redis-based storage.

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Features

• Secure token generation in specified formats and lengths
• Redis-backed storage with automatic expiration
• Customizable token expiration
• Automatic token deletion after verification
• TypeScript support

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Installation

npm install @ajiboladavid/jstp

Prerequisites

• Node.js 14.x or later
• Redis instance

Configuration

First, configure your Redis client before using the package

import { createClient } from "redis";

export const getRedisClient = async() => {
  const client = createClient({
    url: process.env.REDIS_URL
  });
  await client.connect();
  return client; 
}

Generating Tokens

Create a JSTP instance and generate tokens:

import Jstp from "@ajiboladavid/jstp";
import { getRedisClient } from "./redisConfig";

const client = await getRedisClient();
const otpService = new Jstp(client);

const handleOtpGeneration = async () => {
  try {
    const token = await otpService.generateOTP({
      length: 7,
      format: "alphanumeric",
      expiresIn: 3000,
      identifier:"user1234"
    });
    console.log("token =>", token);
  } catch (error) {
    console.error("error =>", error);
  }
};

Verifying Tokens

Verify generated tokens:

 try {
  const isValid = await otpService.verifyOTP({
    identifier: "user1234",
    token: "ABC123"    // Token to verify
  });

  if (isValid) {
    console.log("Token is valid");
  } else {
    console.log("Token is invalid or expired");
  }
} catch (error) {
  console.error("error =>", error);
}

Configuration Options

Syntax	Type	Description	Required
length	Number	Token length (4-12 characters)	Yes
format	"numeric", "alphabetic", "alphanumeric"	Token character format	Yes
expiresIn	number	Token expiration time in seconds	Yes
identifier	string	Unique identifier for the token	Yes

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Token Formats

• numeric: Numbers only (0-9)
• alphabetic: Capital letters only (A-Z)
• alphanumeric: Numbers and capital letters

License

This package is licensed under the MIT License