What would be the easiest way in an Express app to code a route that proxies the Request to another server and encrypts the response before sending it to the client (where it will be decrypted). Is it possible to do it all using streams?

var request = require('request'),
    http = require('http'),
    crypto = require('crypto'),
    acceptor = http.createServer().listen(8089);

acceptor.on('request', function(r, s) {
    var ciph = crypto.createCipher('aes192', 'mypassword');

    // simple stream object to convert binary to string
    var Transform = require('stream').Transform;
    var BtoStr = new Transform({decodeStrings: false});
    BtoStr._transform = function(chunk, encoding, done) {
       done(null, chunk.toString('base64'));
    };

    // get html from Goog, could be made more dynamic
    request('http://google.com').pipe(ciph).pipe(BtoStr).pipe(s);


    //  try encrypt & decrypt to verify it works, will print cleartext to stdout
    //var decrypt = crypto.createDecipher('aes192', 'mypassword');
    //request('http://google.com').pipe(ciph).pipe(decrypt).pipe(process.stdout);
})