avidPeachBoa

Public

Version 17

10/26/2024

// SPDX-License-Identifier: 0BSD

import * as asn1 from "npm:asn1js";

import ky from "npm:ky";

import { base64pad } from "npm:multiformats/bases/base64";

import * as pki from "npm:pkijs";

import * as v from "npm:valibot";

const ActorSchema = v.object({

publicKey: v.object({

id: v.string(),

publicKeyPem: v.string(),

}),

});

const data = await ky.get("https://mastodon.social/@Mastodon.json").json();

const { publicKey } = v.parse(ActorSchema, data);

console.log("keyId=%s\n", publicKey.id);

console.log("Public key in SPKI format:\n%s", publicKey.publicKeyPem.trim());

console.log();

const publicKeyInfo = pki.PublicKeyInfo.fromBER(parsePem(publicKey.publicKeyPem));

const rsaPublicKey = publicKeyInfo.parsedKey as pki.RSAPublicKey;

console.log("Public key in PKCS #1 format:");

const rsaPublicKeyPem = [

"-----BEGIN RSA PUBLIC KEY-----",

wrap(rsaPublicKey.toString("base64"), 64),

"-----END RSA PUBLIC KEY-----",

].join("\n");

console.log(rsaPublicKeyPem);

// http://oid-info.com/get/1.2.840.113549.1.1.1

// console.log(publicKeyInfo.algorithm);

// const expandedPublicKeyInfo = new pki.PublicKeyInfo({

// algorithm: publicKeyInfo.algorithm,

Updated: October 27, 2024