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@eropple/key-sealed-envelope

v0.2.0

Published

[![NPM version](https://img.shields.io/npm/v/@eropple/key-sealed-envelope)](https://www.npmjs.com/package/@eropple/key-sealed-envelope)

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Links

Git

Maintainers

eroppleeropple

Keywords

Readme

@eropple/key-sealed-envelope

NPM version

A TypeScript library for secure message sealing with multiple recipients. It's not a new idea, but I couldn't find a library that met my needs.

The payload is encrypted with a symmetric key (the Content Encryption Key, or CEK), which is then encrypted with a set of all recipients' public keys. The envelope is canonicalized and signed.

Features

  • RSA and EC support
  • Multiple recipients per message; sealer classes
  • Payload commitment ensures all recipients decrypt identical content, preventing message substitution attacks
  • JWKS key management
  • Binary and string payloads

Installation

npm install @eropple/key-sealed-envelope

Getting Started

In lieu of trying to explain things: