Node.js Requires Chilkat v11.7.0+

Verify the Authenticode Signature of an MSI, PowerShell, or VBScript File

See more Code Signing Examples

Demonstrates how to verify the Authenticode signature of a Windows Installer package (.msi), a PowerShell file (.ps1, .psm1, .psd1), or a VBScript file (.vbs), and how to get the certificate of the signer. Verifying these file types requires Chilkat v11.7.0 or later. 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.

    //  Starting in Chilkat v11.7.0, VerifySignature can verify the Authenticode signature of
    //    - Windows Installer packages (.msi)
    //    - PowerShell scripts, modules, and data files (.ps1, .psm1, .psd1)
    //    - VBScript files (.vbs)
    //  in addition to EXE and DLL files.

    //  This example verifies a signed PowerShell script.
    //  To verify an .msi or a .vbs, pass the path of that file instead.
    var path = "C:/someDir/Deploy.ps1";

    var codeSign = new chilkat.CodeSign();
    var sigInfo = new chilkat.JsonObject();

    //  VerifySignature returns true if the file has a valid Authenticode signature.
    //  It returns false if the file is not signed, if the file was changed after it was signed,
    //  or if the signing certificate is not trusted.
    var valid = codeSign.VerifySignature(path,sigInfo);
    if (valid == false) {
        //  The LastErrorText explains why the verification failed.
        console.log(codeSign.LastErrorText);
        return;
    }

    console.log("The Authenticode signature is valid.");

    //  The details of the signature are returned in the JSON, in the same layout as for an EXE or DLL.
    //  See Verify Authenticode Signature of EXE or DLL for a sample of the JSON and code that parses it.
    console.log("signing algorithm: " + sigInfo.StringOf("pkcs7.verify.signerInfo[0].signingAlgName"));
    console.log("hash algorithm: " + sigInfo.StringOf("pkcs7.verify.signerInfo[0].cert.digestAlgName"));

    //  Get the certificate of the signer.
    //  The signer certificate is available only after a call to VerifySignature that returned true.
    //  It is the public certificate only.  It does not include the signer's private key.
    var signerCert = new chilkat.Cert();
    success = codeSign.GetSignerCert(signerCert);
    if (success == false) {
        console.log(codeSign.LastErrorText);
        return;
    }

    console.log("signed by: " + signerCert.SubjectCN);
    console.log("certificate issued by: " + signerCert.IssuerCN);
    console.log("certificate serial number: " + signerCert.SerialNumber);
    console.log("certificate valid until: " + signerCert.ValidToStr);

}

chilkatExample();