(JavaScript) Duplicate OpensSSL Command that Decrypts Binary DER

This example duplicates the following:

openssl smime -decrypt -in INPUT_FILE -inform der -binary -out OUTPUT_FILE -recip PEM_CERT_AND_KEY -passin pass:PRIVKEY_PASSWORD

Note: Although "smime" is the OpenSSL command, we're not really dealing with S/MIME. The arguments "-inform der -binary" indicate that the input is simply the binary DER (i.e. the PKCS7 binary encrypted object). The output can be any type of file (whatever was encrypted).

Note: This example requires Chilkat v11.0.0 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();

crypt.CryptAlgorithm = "pki";

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.SetDecryptCert2(cert,privkey);
if (success == false) {
    console.log(crypt.LastErrorText);
    return;
}

success = crypt.CkDecryptFile("qa_data/infile.enc","qa_output/outfile.dat");
if (success == false) {
    console.log(crypt.LastErrorText);
    return;
}

console.log("Success.");