Node.js

Duplicate openssl smime -decrypt -in some_file.dat.enc -binary -inform DER -inkey private.key -out some_file.dat

See more OpenSSL Examples

Demonstrates how to decrypt binary DER that was encrypted using the following openssl command:

openssl smime -encrypt -binary -aes-256-cbc -in some_file.dat -out some_file.dat.enc -outform DER cert.crt

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.

    //  Duplicates the following openssl command:
    //  openssl smime -decrypt -in hello.txt.enc -binary -inform DER -inkey private.key -out hello.txt

    var cert = new chilkat.Cert();
    success = cert.LoadFromFile("qa_data/openssl/EE.cer");
    if (success == false) {
        console.log(cert.LastErrorText);
        return;
    }

    var bd = new chilkat.BinData();
    success = bd.LoadFile("qa_data/openssl/EE.key");
    //  Assuming success..

    var privKey = new chilkat.PrivateKey();
    success = privKey.LoadAnyFormat(bd,"");
    if (success == false) {
        console.log(privKey.LastErrorText);
        return;
    }

    var crypt = new chilkat.Crypt2();
    success = crypt.SetDecryptCert2(cert,privKey);
    if (success == false) {
        console.log(crypt.LastErrorText);
        return;
    }

    crypt.CryptAlgorithm = "PKI";
    success = crypt.CkDecryptFile("qa_data/openssl/hello.txt.enc","qa_output/hello.txt");
    if (success == false) {
        console.log(crypt.LastErrorText);
        return;
    }

    console.log("Success.");

}

chilkatExample();