Sha256HmacKey2019 Crypto Suite Context _(sha256-hmac-key-2019-context)_


> A JSON-LD context for the Sha256HmacKey2019 crypto suite for JavaScript.

Table of Contents

- Background
- Install
- Usage
- Commercial Support
- License

Background

See also (related specs):

* WebKMS v0.1

Install

Requires Node.js 12+

To install via NPM:

``
npm install sha256-hmac-key-2019-context
`

Usage

`js
import hmacCtx from 'sha256-hmac-key-2019-context';
// or
const hmacCtx = require('sha256-hmac-key-2019-context');
const {contexts, constants, appContextMap} = hmacCtx;

hmacCtx.CONTEXT_URL
// 'https://w3id.org/security/suites/hmac-2019/v1'

// Codec term map value for CBOR-LD
hmacCtx.constants.CBORLD_CODEC_VALUE
// 0x1B

// get context data for a specific context
hmacCtx.CONTEXT
// full context object
`

This package can be used with bundlers, such as [webpack][], in browser
applications.

API

The library exports the following properties:
- CONTEXT_URL
- CONTEXT
- constants: A Object that maps constants to well-known context URLs. The
main constant CONTEXT_URL may be updated from time to time to the
latest context location.
- contexts: A Map that maps URLs to full context data.
- appContextMap: For use with cborld library.

Developing

WARNING: The .jsonld in contexts/ is auto-generated by the npm run build script,
each time you run the test suite.

DO NOT edit it directly (or your changes will be quickly overwritten).
Instead, make all context changes to js/context.js`.

Commercial Support

Commercial support for this library is available upon request from
Digital Bazaar: support@digitalbazaar.com

License

- BSD 3-Clause © Digital Bazaar
- See the LICENSE file for details.

[webpack]: https://webpack.js.org/