Node.js

Sign JSON to Create CAdES P7S Bytes

See more CAdES Examples

Demonstrates how to sign JSON using a certificate + private key from a .p12/.pfx to create a CAdES P7S byte array. Node.js

NODEJS_PRELUDE

function chilkatExample() {

    var success = false;

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

    var crypt = new chilkat.Crypt2();

    var cert = new chilkat.Cert();
    success = cert.LoadPfxFile("qa_data/pfx/cert_test123.pfx","test123");
    if (success !== true) {
        console.log(cert.LastErrorText);
        return;
    }

    //  Tell the crypt component to use this cert.
    success = crypt.SetSigningCert(cert);
    if (success !== true) {
        console.log(crypt.LastErrorText);
        return;
    }

    //  The CadesEnabled property applies to all methods that create PKCS7 signatures. 
    //  To create a CAdES-BES signature, set this property equal to true. 
    crypt.CadesEnabled = true;

    crypt.HashAlgorithm = "sha256";

    var jsonSigningAttrs = new chilkat.JsonObject();
    jsonSigningAttrs.UpdateInt("contentType",1);
    jsonSigningAttrs.UpdateInt("signingTime",1);
    jsonSigningAttrs.UpdateInt("messageDigest",1);
    jsonSigningAttrs.UpdateInt("signingCertificateV2",1);
    crypt.SigningAttributes = jsonSigningAttrs.Emit();

    //  By default, all the certs in the chain of authentication are included in the signature.
    //  If desired, we can choose to only include the signing certificate:
    crypt.IncludeCertChain = false;

    //  Create the CAdES-BES attached signature, which contains the original data.
    crypt.Charset = "utf-8";

    cadesP7s = crypt.OpaqueSignString("{ \"abc\": 123}");
    if (crypt.LastMethodSuccess == false) {
        console.log(crypt.LastErrorText);
        return;
    }

    //  Verify the signature and extract the original JSON:
    var originalJson = crypt.OpaqueVerifyString(cadesP7s);
    if (crypt.LastMethodSuccess == false) {
        console.log(crypt.LastErrorText);
        return;
    }

    console.log("Original JSON: " + originalJson);

    console.log("Success!");

}

chilkatExample();