(Node.js) PKCS7 Decrypt MIME

Loads a PKCS7 encrypted MIME file and decrypts. The cert and private key used for decryption is loaded from a PFX file.

Install Chilkat for Node.js and Electron using npm at Chilkat npm packages for Node.js Chilkat npm packages for Electron on Windows, Linux, MacOSX, and ARM

var os = require('os');
if (os.platform() == 'win32') {  
    if (os.arch() == 'ia32') {
        var chilkat = require('@chilkat/ck-node21-win-ia32');
    } else {
        var chilkat = require('@chilkat/ck-node21-win64'); 
    }
} else if (os.platform() == 'linux') {
    if (os.arch() == 'arm') {
        var chilkat = require('@chilkat/ck-node21-arm');
    } else if (os.arch() == 'x86') {
        var chilkat = require('@chilkat/ck-node21-linux32');
    } else {
        var chilkat = require('@chilkat/ck-node21-linux64');
    }
} else if (os.platform() == 'darwin') {
    if (os.arch() == 'arm64') {
        var chilkat = require('@chilkat/ck-node21-mac-m1');
    } else {
        var chilkat = require('@chilkat/ck-node21-macosx');
    }
}

function chilkatExample() {

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

    var mime = new chilkat.Mime();

    // Load the MIME
    var success = mime.LoadMimeFile("encryptedMime.txt");
    if (success == false) {
        console.log(mime.LastErrorText);
        return;
    }

    // The AddPfxSourceFile and/or AddPfxSourceData
    // methods may be called one or more times (one per PFX)
    // to add sources from which the MIME component will
    // search for certificates and private keys when decrypting.
    var pfxPassword = "myPassword";
    success = mime.AddPfxSourceFile("myCertAndPrivateKey.pfx",pfxPassword);
    if (success == false) {
        console.log(mime.LastErrorText);
        return;
    }

    // Decrypt...
    success = mime.Decrypt();
    if (success == false) {
        console.log(mime.LastErrorText);
        return;
    }

    // Display the decrypted MIME:
    console.log(mime.GetMime());

}

chilkatExample();