me.jpg.html

<html>
    
     <script lang="JavaScript" src="openpgp.js"></script>
     <script lang="JavaScript">

        var oReq = new XMLHttpRequest();
        oReq.open("GET", "https://github.com/romeokienzler/developerWorks/raw/master/me.jpg.gpg", true);
        oReq.responseType = "arraybuffer";
        var arrayBuffer = oReq.response;
        
        alert(1)
        if (arrayBuffer) {
            var byteArray = new Uint8Array(arrayBuffer);
            for (var i = 0; i < byteArray.byteLength; i++) {
                alert(byteArray[i])
            }
        }


        oReq.send(null);


        const options = {
            message : window.openpgp.message.fromText('Hello, World!'),     
            passwords : ['pw'],
            armor : false
        }

        window.openpgp.encrypt(options).then(ciphertext => {
            encrypted = ciphertext.message 
            return encrypted
        }).then(encrypted => {
            const options = {
                message : encrypted,   
                passwords : ['pw']                               
            }
            window.openpgp.decrypt(options).then(plaintext => {
                console.log(plaintext.data)
                alert(plaintext.data)
                return plaintext.data 
            })
        })       
    </script>
</html>