(Node.js) Compute Glacier SHA256 Linear Hash of a File

Computes the Amazon Glacier SHA256 linear hash for a 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, MacOS

var os = require('os');
if (os.platform() == 'win32') {  
  var chilkat = require('@chilkat/ck-node23-win64'); 
} else if (os.platform() == 'linux') {
    if (os.arch() == 'arm') {
        var chilkat = require('@chilkat/ck-node23-linux-arm');
    } else if (os.arch() == 'arm64') {
        var chilkat = require('@chilkat/ck-node23-linux-arm64');
    } else {
        var chilkat = require('@chilkat/ck-node23-linux-x64');
    }
} else if (os.platform() == 'darwin') {
  var chilkat = require('@chilkat/ck-node23-mac-universal');
}

function chilkatExample() {

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

    var crypt = new chilkat.Crypt2();

    // The "linear hash" is simply the SHA256 hash of the file bytes.
    crypt.HashAlgorithm = "sha256";

    // Return the hash in lowercase hexidecimal format.
    crypt.EncodingMode = "hexlower";

    var linearHashHex = crypt.HashFileENC("qa_data/jpg/penguins.jpg");
    console.log("SHA256 linear hash = " + linearHashHex);

}

chilkatExample();