Sign Documents with Digital Signatures using REST API in Node.js

SignWithDigitalSignatures_NodeJs

Sign Documents with Digital Signatures using REST API in Node.js
1. Sign Word Documents using a REST API in Node.js
2. Sign PDF Documents using a REST API in Node.js
3. Verify Digital Signatures using a REST API in Node.js
4. Upload Word File
5. Download Signed File

SignWithDigitalSignatures_NodeJs_Configurations.js

global.clientId = "112f0f38-9dae-42d5-b4fc-cc84ae644972";
global.clientSecret = "16ad3fe0bdc39c910f57d2fd48a5d618";
global.myStorage = "";

const config = new groupdocs_signature_cloud.Configuration(clientId, clientSecret);
config.apiBaseUrl = "https://api.groupdocs.cloud";

SignWithDigitalSignatures_NodeJs_Download.js

// construct FileApi
var fileApi = groupdocs_signature_cloud.FileApi.fromConfig(config);

// create download file request
let request = new groupdocs_signature_cloud.DownloadFileRequest("signedDigital_sample.docx", myStorage);
let response = await fileApi.downloadFile(request);

// save file to the working directory
fs.writeFile("C:\\Files\\signedDigital_sample.docx", response, "binary", function (err) { });

SignWithDigitalSignatures_NodeJs_SignDOCX.js

// initialize api
let signApi = groupdocs_signature_cloud.SignApi.fromKeys(clientId, clientSecret);

// create file info
let fileInfo = new groupdocs_signature_cloud.FileInfo();
fileInfo.filePath = "sample.docx";

// define sign digital options
let opts = new groupdocs_signature_cloud.SignDigitalOptions();
opts.signatureType = groupdocs_signature_cloud.OptionsBase.SignatureTypeEnum.Digital;
opts.imageFilePath = "signature.jpg";
opts.certificateFilePath = "certificate.pfx";
opts.password = "1234567890";

// set signature position on a page
opts.left = 350;
opts.top = 450;
opts.width = 200;
opts.height = 100;
opts.location_measure_type = "Pixels";
opts.size_measure_type = "Pixels";
opts.rotation_angle = 0;
opts.horizontal_alignment = "None";
opts.vertical_alignment = "None";
opts.margin = new groupdocs_signature_cloud.Padding();
opts.margin.all = 5;
opts.margin_measure_type = "Pixels";

// set page to show signatures
opts.page = 1;

// define sign settings
let settings = new groupdocs_signature_cloud.SignSettings();
settings.fileInfo = fileInfo;
settings.options = [opts];

// define save options
settings.saveOptions = new groupdocs_signature_cloud.SaveOptions();
settings.saveOptions.outputFilePath = "signedDigital_sample.docx";

// create signature request
let request = new groupdocs_signature_cloud.CreateSignaturesRequest(settings);
let response = await signApi.createSignatures(request);

console.log("Output file link: " + response.downloadUrl);

SignWithDigitalSignatures_NodeJs_SignPDF.js

// initialize api
let signApi = groupdocs_signature_cloud.SignApi.fromKeys(clientId, clientSecret);

// create file info
let fileInfo = new groupdocs_signature_cloud.FileInfo();
fileInfo.filePath = "sample.pdf";

// define sign digital options
let opts = new groupdocs_signature_cloud.SignDigitalOptions();
opts.signatureType = groupdocs_signature_cloud.OptionsBase.SignatureTypeEnum.Digital;
opts.imageFilePath = "signature.jpg";
opts.certificateFilePath = "certificate.pfx";
opts.password = "1234567890";
opts.allPage = true;

// define sign options
let settings = new groupdocs_signature_cloud.SignSettings();
settings.fileInfo = fileInfo;
settings.options = [opts];

// define save options
settings.saveOptions = new groupdocs_signature_cloud.SaveOptions();
settings.saveOptions.outputFilePath = "signedDigital_sample.pdf";

// create signature request
let request = new groupdocs_signature_cloud.CreateSignaturesRequest(settings);
let response = await signApi.createSignatures(request);

console.log("Output file link: " + response.downloadUrl);

SignWithDigitalSignatures_NodeJs_Upload.js

var resourcesFolder = 'C:\\Files\\sample.docx';
fs.readFile(resourcesFolder, (err, fileStream) => {
  // construct FileApi
  var fileApi = groupdocs_signature_cloud.FileApi.fromConfig(config);
  // create upload file request
  var request = new groupdocs_signature_cloud.UploadFileRequest("sample.docx", fileStream, myStorage);
  fileApi.uploadFile(request)
});

SignWithDigitalSignatures_NodeJs_Verify.js

// initialize api
let signApi = groupdocs_signature_cloud.SignApi.fromKeys(clientId, clientSecret);

// create file info
let fileInfo = new groupdocs_signature_cloud.FileInfo();
fileInfo.filePath = "signedDigital_sample.docx";

// define verify options
let opts = new groupdocs_signature_cloud.VerifyDigitalOptions();
opts.signatureType = groupdocs_signature_cloud.OptionsBase.SignatureTypeEnum.Digital;

// define verify settings
let settings = new groupdocs_signature_cloud.VerifySettings();
settings.fileInfo = fileInfo;
settings.options = [opts];

// create verify signature request
let request = new groupdocs_signature_cloud.VerifySignaturesRequest(settings);
let response = await signApi.verifySignatures(request);

// show results
if (response.isSuccess) {
  console.log("Successfully verified!");
}
else{
  console.log("Not verified!");
}