Node.js

Sign a File to Create a .p7s (Detached Signature)

See more Encryption Examples

_LANGUAGE_ example to create a detached signature file (.p7s) for any type file. The signature can be verified by calling VerifyP7S and passing the original filename and the .p7s filename. Node.js

NODEJS_PRELUDE

function chilkatExample() {

    var success = false;

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

    var crypt = new chilkat.Crypt2();

    // 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 chilkat.CertStore();
    success = certStore.LoadPfxFile(pfxFilename,pfxPassword);
    if (success !== true) {
        console.log(certStore.LastErrorText);
        return;
    }

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

    var cert = new chilkat.Cert();
    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 .p7s as output:
    var inFile = "/Users/chilkat/testData/pdf/sample.pdf";
    var sigFile = "/Users/chilkat/testData/p7s/sample.p7s";

    success = crypt.CreateP7S(inFile,sigFile);
    if (success == false) {
        console.log(crypt.LastErrorText);
        return;
    }

    success = crypt.VerifyP7S(inFile,sigFile);
    if (success == false) {
        console.log(crypt.LastErrorText);
        return;
    }

    console.log("Success!");

}

chilkatExample();