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import { base64 } from "./deps.ts";
/*  Import a PEM encoded RSA private key, to use for RSA-PSS signing.  Takes a string containing the PEM encoded key, and returns a Promise  that will resolve to a CryptoKey representing the private key.  */function importPrivateKey(pem: string) {  // fetch the part of the PEM string between header and footer  const pemHeader = "-----BEGIN PRIVATE KEY-----";  const pemFooter = "-----END PRIVATE KEY-----";  const pemContents = pem.substring(    pemHeader.length,    pem.length - pemFooter.length,  );  const binaryDer = base64.decode(pemContents).buffer;  return window.crypto.subtle.importKey(    "pkcs8",    binaryDer,    {      name: "RSASSA-PKCS1-v1_5",      hash: "SHA-384",    },    true,    ["sign"],  );}
async function generatePemFromPrivateCryptoKey(privateKey: CryptoKey) {  const exportedKey = await crypto.subtle.exportKey("pkcs8", privateKey);  const exportedAsBase64 = base64.encode(exportedKey);  return `-----BEGIN PRIVATE KEY-----\n${exportedAsBase64}\n-----END PRIVATE KEY-----`;}
const keyRS384CryptoKeyPair = await window.crypto.subtle.generateKey(  {    name: "RSASSA-PKCS1-v1_5",    modulusLength: 4096,    publicExponent: new Uint8Array([1, 0, 1]),    hash: "SHA-384",  },  true,  ["verify", "sign"],);
const { privateKey } = keyRS384CryptoKeyPair;
const pemExported = await generatePemFromPrivateCryptoKey(privateKey);
const importedCryptoKey = await importPrivateKey(pemExported);
const areEqualKeys =  pemExported === await generatePemFromPrivateCryptoKey(importedCryptoKey);
console.log(areEqualKeys);