JavaScript Requires Chilkat v11.0.0+

Duplicate OpensSSL to Sign File and Output Binary DER

This example duplicates the following:

openssl smime -sign -in INPUT.xml -signer SIGN.PEM -passin pass:MYPASS -outform der -binary -nodetach -out SIGNED.P7M

Note: Although "smime" is the OpenSSL command, it's not actually producing S/MIME. The arguments "-outform der -binary" indicates that the output is binary DER (i.e. the PKCS7 binary signature). The input can be any type of file: XML, PDF, JPG, ... *anything*...

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.

JavaScript

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();

//  Load the PEM containing cert + private key.
var pem = new CkPem();
success = pem.LoadPemFile("qa_data/pem/myPem.pem","password");
if (success == false) {
    console.log(pem.LastErrorText);
    return;
}

var privkey = new CkPrivateKey();
success = pem.PrivateKeyAt(0,privkey);
if (success == false) {
    console.log(pem.LastErrorText);
    return;
}

var cert = new CkCert();
success = pem.CertAt(0,cert);
if (success == false) {
    console.log(pem.LastErrorText);
    return;
}

success = crypt.SetSigningCert2(cert,privkey);
if (success == false) {
    console.log(crypt.LastErrorText);
    return;
}

//  Alternatively, we could use a .pfx/.p12 file.
//  (Chilkat also supports other formats/sources for cert/private keys...)
var certFromP12 = new CkCert();
success = certFromP12.LoadPfxFile("qa_data/p12/myP12.p12","password");
if (success == false) {
    console.log(certFromP12.LastErrorText);
    return;
}

//  The certificate, when loaded from a .pfx/.p12, will automatically 
//  include the associated private key, assuming it's present in the .p12.
//  We don't have to explicitly provide the private key as in the
//  lines of code above that use the PEM file.
success = crypt.SetSigningCert(certFromP12);
if (success == false) {
    console.log(crypt.LastErrorText);
    return;
}

//  Create the opaque signature (PKCS7 binary DER that contains both the signature and original file data).
success = crypt.CreateP7M("qa_data/infile.anything","qa_output/outfile.p7m");
if (success == false) {
    console.log(crypt.LastErrorText);
    return;
}

console.log("Success.");