Socket
Socket
Sign inDemoInstall

pkcs7

Package Overview
Dependencies
Maintainers
142
Versions
13
Alerts
File Explorer

Advanced tools

Socket logo

Install Socket

Detect and block malicious and high-risk dependencies

Install

pkcs7

Add and remove pkcs7-style padding.


Version published
Weekly downloads
372K
decreased by-2.71%
Maintainers
142
Weekly downloads
 
Created
Source

pkcs7

Build Status Greenkeeper badge Slack Status

NPM

Add and remove pkcs7-style padding.

Table of Contents generated with DocToc

Getting Started

Install the module with: npm install pkcs7

var pkcs7 = require('pkcs7'), encrypted;
// pad a buffer!
enctcrypted = encrypt(pkcs7.pad(buffer));

// later, you can unpad it:
console.log('the secret is out! ' + pkcs7.unpad(decrypt(encrypted)));

Install with cli command

$ npm install -g pkcs7
$ pkcs7 --help
$ pkcs7 --version

Documentation

PKCS#7 padding a really simple transformation some crytographic algorithms use to ensure the number of input bytes is a multiple of some constant. Here's how it works:

         01 -- if lth mod k = k-1
      02 02 -- if lth mod k = k-2
          .
          .
          .
k k ... k k -- if lth mod k = 0

k is the constant value the encryption algorithm wants your input to be a multiple of. This project assumes k is always sixteen. Not much to it, right? If reading specs is your thing, check out RFC 5652.

Examples

You can run pkcs7 from the command line:

# pad a string generated by echo and the hex dump the result
echo -n "0123456789AB" | pkcs7 | xxd

Contributing

In lieu of a formal styleguide, take care to maintain the existing coding style. Add unit tests for any new or changed functionality. Lint and test your code using Grunt.

License

Copyright (c) 2014 Brightcove Licensed under the Apache-2 license.

Keywords

FAQs

Package last updated on 09 Sep 2020

Did you know?

Socket

Socket for GitHub automatically highlights issues in each pull request and monitors the health of all your open source dependencies. Discover the contents of your packages and block harmful activity before you install or update your dependencies.

Install

Related posts

SocketSocket SOC 2 Logo

Product

  • Package Alerts
  • Integrations
  • Docs
  • Pricing
  • FAQ
  • Roadmap
  • Changelog

Packages

npm

Stay in touch

Get open source security insights delivered straight into your inbox.


  • Terms
  • Privacy
  • Security

Made with ⚡️ by Socket Inc