node cades script example that verifies attached signature

node-cades-verify-signature.js

// Compile node module first `https://github.com/boriborm/cryptopro-node-cades`

const fs = require("node:fs");
const cades = require("./NodeCades");

const signedData = new cades.SignedData();
const message = fs.readFileSync("message.txt", { encoding: "utf-8" });
signedData.content = message; // string

const signatureRaw = fs.readFileSync("message.txt.sig"); // buffer

signedData.verifyCades(signatureRaw, cades.CADESCOM_CADES_X_LONG_TYPE_1);

console.log("verified");
console.log("Content", signedData.content);
console.log("Number of signers", signedData.signers.length);

for (const signer of signedData.signers) {
  const signerCert = signer.certificate;
  console.log("signer", signerCert.subjectName);
}