secretz-notowkring.js

var crypto = require('crypto')
var tar = require('tar')
var zlib = require('zlib')
var through = require('through')
var h = crypto.createHash('md5', { encoding: 'hex' })

var parser = tar.Parse()
parser.on('entry', function(e) {
  if (e.type !== 'File') return

	e.pipe(h).pipe(through(null, end)).pipe(process.stdout)

	function end() { this.queue(' ' + e.path + '\n') }
})

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

secretz-working.js

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

var parser = tar.Parse()
parser.on('entry', function(e) {
  if (e.type !== 'File') return

	var h = crypto.createHash('md5', { encoding: 'hex' })
	e.pipe(h).pipe(through(null, end)).pipe(process.stdout)

	function end() { this.queue(' ' + e.path + '\n') }
})

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