Node.js

This guide shows you how to use implement Criipto Signatures in Node.js to sign PAdeS-LTA documents using MitID, BankID or any other eID supported by Criipto.

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Getting started

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Requirements

This library supports Node 16 and later.

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Installation

The SDK is available on NPM:

npm install --save @criipto/signatures
yarn add @criipto/signatures

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Configure the SDK

import CriiptoSignatures from '@criipto/signatures';
const client = new CriiptoSignatures("{YOUR_CRIIPTO_CLIENT_ID}", "{YOUR_CRIIPTO_CLIENT_SECRET}");

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Creating your first signature order

Create a signature order by

import CriiptoSignatures from '@criipto/signatures';
const client = new CriiptoSignatures("{YOUR_CRIIPTO_CLIENT_ID}", "{YOUR_CRIIPTO_CLIENT_SECRET}");

// Create signature order
const signatureOrder = await client.createSignatureOrder({
  title: "Node.js sample",
  documents: [
    {
      pdf: {
        title: "Node.js Sample",
        blob: pdf.toString('base64'),
        storageMode: 'Temporary'
      }
    }
  ]
});

// ... store the signatureOrder.id

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Adding signatories

Signatories are the individuals you wish to sign your documents.

import CriiptoSignatures from '@criipto/signatures';
const signatureOrderId = "..." // The id from when you previosuly created the signature order

// Add signatory to signature order
var signatory = await client.addSignatory(signatureOrderId);

console.log(signatory.href); // The signatory.href is the signing link that you can show or send to your users

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Closing the signature order

Once everyone has signed you must close the signature order to finalize the process and extract the signed documents.

const client = new CriiptoSignatures("{YOUR_CRIIPTO_CLIENT_ID}", "{YOUR_CRIIPTO_CLIENT_SECRET}");
var signatureOrderId = "..." // The id from when you previosuly created the signature order

// Close signature order
var closedSignatureOrder = await client.closeSignatureOrder(signatureOrderId);

closedSignatureOrder.documents.forEach(document => {
  // document.blob is a Buffer containing the signed PDF
});

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More examples

More Node.js examples are provided for all the options supported by the Criipto Signatures API.