node.js implementation working identically to python's

.gitignore

@@ -2,3 +2,4 @@ AquaticPrime Developer.app
 .DS_Store
 .idea
 *.xcuserstate
+node_modules

Source/NodeJS/aquatic_prime.coffee

@@ -1,5 +1,29 @@
-_ = require 'underscore'
 crypto = require 'crypto'
+bigint = require 'bigint'
+
+pubKey = 'E9DBF6A4F6B443282117C6D5E9255F6735DC45DBCB9FA3CABD0F082689B4A25504A2340E2F2F541BF2CE7987491EC541E8B5496BB6AF235F18B6C31F37CA68B430431E41611E93DCFBE40EB7D3C726E74B9D68B9867706A5E0CBD44E0B8863AAC3D2FDBF3CD57B10C3E90039E966F789CC8CBCB1CEBBD2EB95FF5F05E48F37A3'
+privKey = '9BE7F9C34F22D770160FD9E3F0C394EF793D83E7DD1517DC7E0A056F06786C38ADC1780974CA3812A1DEFBAF8614838145CE30F279CA1794BB248214CFDC45CC2EFAD1A84D0B8B442D71623486EC36DF6036A4AD8CD319743E7BCF0ECFEA8D0955B1305E42FE30F042D67A9317F10FF3CD2EDFB1D003896EF7791742199348AB'
+
+powmod = (x, a, m) ->
+  r = bigint 1
+  while a.gt bigint 0
+    if a.mod(bigint 2).eq bigint 1
+      r = r.mul(x).mod m
+    a = a.shiftRight 1
+    x = x.mul(x).mod m
+  r
 
 getSignature = (licensee) ->
-  total = _(licensee).chain().keys().invoke('toLowerCase').value().sort().join ''
+  total = (licensee[k] for key in (k for k of licensee).sort()).join ''
+  hash = crypto.createHash 'sha1'
+  hash.update total, 'utf8'
+  digest = hash.digest 'hex'
+  paddedHash = '0001'
+  for i in [0..104]
+    paddedHash += 'ff'
+  paddedHash += '00' + digest
+
+  signature = powmod(bigint(paddedHash, 16),
+    bigint(privKey, 16), bigint(pubKey, 16)).toBuffer().toString 'base64'
+
+console.log getSignature name: 'koen'

Source/NodeJS/package.json

@@ -1,7 +1,7 @@
 {
   "name": "aquatic-prime",
   "preferGlobal": false,
-  "version": "0.0.0",
+  "version": "0.0.1",
   "author": "Max Desyatov <max.desyatov@gmail.com>",
   "description": "node.js port of AquaticPrime license generator",
   "contributors": [
@@ -21,15 +21,11 @@
   ],
   "dependencies": {
     "coffee-script": "1.6.x",
-    "underscore": "1.4.x"
+    "bigint": "~0.4.2"
   },
   "analyze": false,
   "license": "MIT",
   "engines": {
     "node": ">=0.10"
-  },
-  "devDependencies": {
-    "nodeunit": "0.8.x",
-    "grunt-contrib-nodeunit": "~0.1.2"
   }
 }