(Node.js) Find a Certificate by it's SHA-1 Thumbprint

Finds a certificate by it's SHA-1 hex thumbprint. Parts of this example are specific to Windows because it searches the Windows Current User certificate store.

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() {

    var certStore = new chilkat.CertStore();

    var thumbprint = "12c1dd8015f3f03f7b1fa619dc24e2493ca8b4b2";

    // This part of the example is specific to Windows because it is opening the Windows Current-User certificate store.
    var bReadOnly = true;
    var success = certStore.OpenCurrentUserStore(bReadOnly);
    if (success !== true) {
        console.log(certStore.LastErrorText);
        return;
    }

    // Find the certificate with the desired thumbprint
    // cert: Cert
    var cert = certStore.FindCertBySha1Thumbprint(thumbprint);
    if (certStore.LastMethodSuccess !== true) {
        console.log("Failed to find the certificate.");
        return;
    }

    console.log("Found: " + cert.SubjectCN);

    // -------------------------------------------------------------------------------------
    // Alternatively, one could load a certificate store object with certs from a PEM file,
    // and do the same thing..
    var certStorePem = new chilkat.CertStore();

    success = certStorePem.LoadPemFile("pemFiles/certificates.pem");
    if (success !== true) {
        console.log(certStorePem.LastErrorText);
        return;
    }

    cert = certStorePem.FindCertBySha1Thumbprint(thumbprint);
    if (certStorePem.LastMethodSuccess !== true) {
        console.log("Failed to find the certificate.");
        return;
    }

    console.log("Found: " + cert.SubjectCN);


}

chilkatExample();