@peculiar/asn1-rsa is an npm package that provides ASN.1 schema definitions for RSA cryptographic algorithms. It is useful for encoding and decoding RSA keys and signatures in ASN.1 format, which is a standard interface for representing cryptographic data.

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

Encoding RSA Public Key

This code demonstrates how to encode an RSA public key into ASN.1 format using the @peculiar/asn1-rsa package.

const { RSAPublicKey } = require('@peculiar/asn1-rsa');
const { AsnConvert } = require('@peculiar/asn1-schema');

const publicKey = new RSAPublicKey({
  modulus: new Uint8Array([0x00, 0x01, 0x02, 0x03]),
  publicExponent: new Uint8Array([0x01, 0x00, 0x01])
});

const asn1PublicKey = AsnConvert.serialize(publicKey);
console.log(asn1PublicKey);

Decoding RSA Public Key

This code demonstrates how to decode an ASN.1 encoded RSA public key using the @peculiar/asn1-rsa package.

const { RSAPublicKey } = require('@peculiar/asn1-rsa');
const { AsnConvert } = require('@peculiar/asn1-schema');

const asn1PublicKey = new Uint8Array([/* ASN.1 encoded public key bytes */]);
const publicKey = AsnConvert.parse(asn1PublicKey, RSAPublicKey);
console.log(publicKey);

Encoding RSA Private Key

This code demonstrates how to encode an RSA private key into ASN.1 format using the @peculiar/asn1-rsa package.

const { RSAPrivateKey } = require('@peculiar/asn1-rsa');
const { AsnConvert } = require('@peculiar/asn1-schema');

const privateKey = new RSAPrivateKey({
  version: 0,
  modulus: new Uint8Array([0x00, 0x01, 0x02, 0x03]),
  publicExponent: new Uint8Array([0x01, 0x00, 0x01]),
  privateExponent: new Uint8Array([0x00, 0x01, 0x02, 0x03]),
  prime1: new Uint8Array([0x00, 0x01]),
  prime2: new Uint8Array([0x00, 0x01]),
  exponent1: new Uint8Array([0x00, 0x01]),
  exponent2: new Uint8Array([0x00, 0x01]),
  coefficient: new Uint8Array([0x00, 0x01])
});

const asn1PrivateKey = AsnConvert.serialize(privateKey);
console.log(asn1PrivateKey);

Decoding RSA Private Key

This code demonstrates how to decode an ASN.1 encoded RSA private key using the @peculiar/asn1-rsa package.

const { RSAPrivateKey } = require('@peculiar/asn1-rsa');
const { AsnConvert } = require('@peculiar/asn1-schema');

const asn1PrivateKey = new Uint8Array([/* ASN.1 encoded private key bytes */]);
const privateKey = AsnConvert.parse(asn1PrivateKey, RSAPrivateKey);
console.log(privateKey);

Other packages similar to @peculiar/asn1-rsa

Readme

Source

`@peculiar/asn1-rsa`

RFC 8017 RSA Cryptography Specifications Version 2.2

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Last updated on 17 Oct 2023

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