(JavaScript) Sign a File to Create a .p7m File (using a PFX)

JavaScript example to sign a file creating a .p7m file as output. The .p7m contains the signed contents of the original file. It can be verified and restored by calling VerifyP7M.

Note: This example requires Chilkat v10.1.2 or greater.

Note

This example is intended for running within a Chilkat.Js embedded JavaScript engine. All Chilkat JavaScript examples require Chilkat v11.4.0 or greater.

var success = false;

// This example requires the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

var crypt = new CkCrypt2();

// Use a digital certificate and private key from a PFX file (.pfx or .p12).
var signingCertSubject = "Acme Inc";
var pfxFilename = "/Users/chilkat/testData/pfx/acme.pfx";
var pfxPassword = "test123";

var certStore = new CkCertStore();
success = certStore.LoadPfxFile(pfxFilename,pfxPassword);
if (success !== true) {
    console.log(certStore.LastErrorText);
    return;
}

var jsonCN = new CkJsonObject();
jsonCN.UpdateString("CN",signingCertSubject);

var cert = new CkCert();
success = certStore.FindCert(jsonCN,cert);
if (success == false) {
    console.log("Failed to find certificate by subject common name.");
    return;
}

// Tell the crypt component to use this cert.
success = crypt.SetSigningCert(cert);

// We can sign any type of file, creating a .p7m as output:
var inFile = "/Users/chilkat/testData/pdf/sample.pdf";
var outputFile = "/Users/chilkat/testData/p7m/sample.pdf.p7m";
success = crypt.CreateP7M(inFile,outputFile);
if (success == false) {
    console.log(crypt.LastErrorText);
    return;
}

// Verify and restore the original file:
success = crypt.SetVerifyCert(cert);

inFile = outputFile;
outputFile = "/Users/chilkat/testData/pdf/restored.pdf";

success = crypt.VerifyP7M(inFile,outputFile);
if (success == false) {
    console.log(crypt.LastErrorText);
    return;
}

console.log("Success!");