Node.js

Duplicate OpensSSL Command that Decrypts Binary DER

See more OpenSSL Examples

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).

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();

    crypt.CryptAlgorithm = "pki";

    var pem = new chilkat.Pem();
    success = pem.LoadPemFile("qa_data/pem/myPem.pem","password");
    if (success == false) {
        console.log(pem.LastErrorText);
        return;
    }

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

    var cert = new chilkat.Cert();
    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.");

}

chilkatExample();