ecdsa-sig-formatter

Translate ECDSA signatures between ASN.1/DER and JOSE-style concatenation

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Readme

ecdsa-sig-formatter
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Translate between JOSE and ASN.1/DER encodings for ECDSA signatures

Install

npm install ecdsa-sig-formatter --save

Usage

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.
  1. Make your modifications in a branch, updating and writing new unit tests
as necessary in the `spec` directory.
  1. Ensure that all tests pass with npm test

  1. rebase your changes against master. Do not merge.

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

Code Style

This repository is configured with EditorConfigEditorConfig and ESLintESLint rules.