npm package discovery and stats viewer.

Discover Tips

  • General search

    [free text search, go nuts!]

  • Package details

    pkg:[package-name]

  • User packages

    @[username]

Sponsor

Optimize Toolset

I’ve always been into building performant and accessible sites, but lately I’ve been taking it extremely seriously. So much so that I’ve been building a tool to help me optimize and monitor the sites that I build to make sure that I’m making an attempt to offer the best experience to those who visit them. If you’re into performant, accessible and SEO friendly sites, you might like it too! You can check it out at Optimize Toolset.

About

Hi, 👋, I’m Ryan Hefner  and I built this site for me, and you! The goal of this site was to provide an easy way for me to check the stats on my npm packages, both for prioritizing issues and updates, and to give me a little kick in the pants to keep up on stuff.

As I was building it, I realized that I was actually using the tool to build the tool, and figured I might as well put this out there and hopefully others will find it to be a fast and useful way to search and browse npm packages as I have.

If you’re interested in other things I’m working on, follow me on Twitter or check out the open source projects I’ve been publishing on GitHub.

I am also working on a Twitter bot for this site to tweet the most popular, newest, random packages from npm. Please follow that account now and it will start sending out packages soon–ish.

Open Software & Tools

This site wouldn’t be possible without the immense generosity and tireless efforts from the people who make contributions to the world and share their work via open source initiatives. Thank you 🙏

© 2024 – Pkg Stats / Ryan Hefner

rsa-oaep-encryption

v1.0.1

Published

Pure JavaScript implementation of encryption using the RSA-OAEP algorithm without relying on the Web Crypto API.

Downloads

372

Readme

RSA OAEP Encryption

NPM version NPM downloads JSR Version JSR Score Build Status codecov


The purpose of this project is to provide a pure JavaScript implementation of RSA encryption in an environment that does not support the Web Crypto API.

Thanks to node-forge, this project was forked from it and the following modifications and changes were made:

  • Rewrite using TypeScript.
  • Delete all nodejs-only codes.
  • Only the encryption function using the RSA-OAEP algorithm is retained, and all other codes are deleted. It means that PKCS1-v1_5 is not supported.
  • The hash algorithm only supports SHA1 SHA-256 SHA-384 SHA-512 to be consistent with the Web Crypto API.
  • The return value of the encrypt method is changed to ArrayBuffer to be consistent with the Web Crypto API.
  • The code is almost 100% covered and tree-shake friendly.

Installation

# via pnpm
pnpm add rsa-oaep-encryption
# or via yarn
yarn add rsa-oaep-encryption
# or just from npm
npm install --save rsa-oaep-encryption
# via JSR
jsr add @happy-js/rsa-oaep-encryption
# for deno
deno add @happy-js/rsa-oaep-encryption
# for bun
bunx jsr add @happy-js/rsa-oaep-encryption

Examples

import { importPublicKey, sha256 } from 'rsa-oaep-encryption';

const PUBLIC_KEY = `-----BEGIN PUBLIC KEY-----
xxxxx
-----END PUBLIC KEY-----`;
const encryptedData = importPublicKey(PUBLIC_KEY).encrypt('some data', sha256.create()); // or sha1 sha384 sha512

In an environment that supports the Web Crypto API, this is equivalent to the following code:

const keyData = base64ToBuffer(PUBLIC_KEY.replace(/(-----(BEGIN|END) PUBLIC KEY-----|\s)/g, '')); // base64ToBuffer needs to be implemented
const publicKey = await crypto.subtle.importKey(
    'spki',
    keyData,
    {
        name: 'RSA-OAEP',
        hash: 'SHA-256',
    },
    false,
    [
        'encrypt',
    ]
);
const encryptedData = await crypto.subtle.encrypt(
    {
        name: 'RSA-OAEP',
    },
    publicKey,
    new TextEncoder().encode('some data')
);

Of course, you can also use the exported SHA methods to perform SHA calculations separately in an environment that does not support the Web Crypto API.

Like this:

import { sha1 } from 'rsa-oaep-encryption';

const sha1Str = sha1.create().update('some data').digest().toHex();

Docs