@peculiar/asn1-cms

What is @peculiar/asn1-cms?

@peculiar/asn1-cms is a JavaScript library for handling ASN.1 structures related to Cryptographic Message Syntax (CMS). It provides tools for encoding and decoding CMS data structures, which are used in secure messaging and data encryption applications.

What are @peculiar/asn1-cms's main functionalities?

Encoding CMS Structures

This feature allows you to encode CMS structures into ASN.1 BER format. The code sample demonstrates creating a ContentInfo object with a simple data content type and encoding it to a binary format.

const { ContentInfo } = require('@peculiar/asn1-cms');

const contentInfo = new ContentInfo({
  contentType: '1.2.840.113549.1.7.1', // data
  content: Buffer.from('Hello, World!')
});

const encoded = contentInfo.toSchema().toBER();
console.log(encoded);

Decoding CMS Structures

This feature allows you to decode ASN.1 BER encoded CMS structures. The code sample shows how to decode a binary encoded ContentInfo object and access its content type and content.

const { ContentInfo } = require('@peculiar/asn1-cms');

const encodedData = new Uint8Array([/* some encoded data */]);
const contentInfo = ContentInfo.fromBER(encodedData.buffer);

console.log(contentInfo.contentType);
console.log(contentInfo.content);

Other packages similar to @peculiar/asn1-cms

asn1js

asn1js is a library for encoding and decoding ASN.1 data structures in JavaScript. It provides a more general-purpose ASN.1 handling capability compared to @peculiar/asn1-cms, which is specifically focused on CMS structures.

pkijs

pkijs is a library for working with Public Key Infrastructure (PKI) in JavaScript. It includes support for CMS, but also provides broader functionality for handling certificates, CRLs, and other PKI-related structures. It is more comprehensive than @peculiar/asn1-cms, which is focused solely on CMS.

README

@peculiar/asn1-cms

RFC 5652 Cryptographic Message Syntax (CMS)