ecdsa-sig-formatter

 

Translate between JOSE and ASN.1/DER encodings for ECDSA signatures

Install

sh
npm install ecdsa-sig-formatter --save

Usage

js
var format = require('ecdsa-sig-formatter');

var derSignature = '..'; // asn.1/DER encoded ecdsa signature

var joseSignature = format.derToJose(derSignature);

API

.derToJose(Buffer|String signature, String alg) -> String

Convert the ASN.1/DER encoded signature to a JOSE-style concatenated signature. Returns a _base64 url_ encoded String.

• If _signature_ is a String, it should be _base64_ encoded
• _alg_ must be one of _ES256_, _ES384_ or _ES512_

.joseToDer(Buffer|String signature, String alg) -> Buffer

Convert the JOSE-style concatenated signature to an ASN.1/DER encoded signature. Returns a Buffer

• If _signature_ is a String, it should be _base64 url_ encoded
• _alg_ must be one of _ES256_, _ES384_ or _ES512_

Contributing

1. Fork the repository. Committing directly against this repository is highly discouraged.

2. Make your modifications in a branch, updating and writing new unit tests as necessary in the spec directory.

3. Ensure that all tests pass with npm test

4. rebase your changes against master. *Do not merge*.

5. Submit a pull request to this repository. Wait for tests to run and someone to chime in.

Code Style

This repository is configured with [EditorConfig][EditorConfig] and [ESLint][ESLint] rules.

[EditorConfig]: http://editorconfig.org/ [ESLint]: http://eslint.org