nodeschool stream-adventure

crypto.js

 var tar = require('tar'),
     through = require('through'),
     zlib = require('zlib'),
     crypto = require('crypto'); 

var parser = tar.Parse();

parser.on('entry',function(e) {
 if(e.type ==='File') {
  var md = crypto.createHash('md5',{encoding:'hex'});
  e.pipe(md).pipe(through(null,function() {
    this.queue(' ' + e.path + '\n');
  })).pipe(process.stdout);
 }
});

process.stdin
       .pipe(crypto.createDecipher(process.argv[2],process.argv[3]))
       .pipe(zlib.createGunzip())
       .pipe(parser);