Sample code for 30+ languages & platforms
Node.js

Create PKCS7 Signed File (.p7m)

See more Encryption Examples

Demonstrates how to sign a file to create a .p7m that contains both the file contents and the signature.

Chilkat Node.js Downloads

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();

    var certStore = new chilkat.CertStore();

    // Load a PFX file into a certificate store object.
    success = certStore.LoadPfxFile("myPfx.pfx","pfxPassword");
    if (success !== true) {
        console.log(certStore.LastErrorText);
        return;
    }

    // Get the certificate by subject common name.
    // This should be the cert within the PFX that also
    // has a private key (also stored within the PFX).
    var jsonCN = new chilkat.JsonObject();
    jsonCN.UpdateString("CN","myCert");
    var cert = new chilkat.Cert();
    success = certStore.FindCert(jsonCN,cert);
    if (success == false) {
        console.log(certStore.LastErrorText);
        return;
    }

    // Tell the crypt object to use the certificate for signing:
    success = crypt.SetSigningCert(cert);

    // Sign a file, producing a .p7m as output.
    // The input file is unchanged, the test.p7m contains the 
    // contents of the input file and the signature.
    var inFile = "test.txt";
    var outFile = "testp7m";
    success = crypt.CreateP7M(inFile,outFile);
    if (success !== true) {
        console.log(crypt.LastErrorText);
        return;
    }

    console.log("Success!");

}

chilkatExample();