From 79dd53e4c4bee4ae6be8c9127bc1d1d3c17cd157 Mon Sep 17 00:00:00 2001
From: amki <amki@amki.eu>
Date: Sat, 25 Apr 2015 04:06:01 +0200
Subject: [PATCH] Moved crypto module to internal node crypto api, removed
 (pretty) senseless cipher command and added random command

---
 install                  |  2 +-
 modules/crypto/README.md | 14 ++++--------
 modules/crypto/crypto.js | 48 +++++++++++++++++++++++-----------------
 3 files changed, 33 insertions(+), 31 deletions(-)

diff --git a/install b/install
index 2279732..4e7573d 100755
--- a/install
+++ b/install
@@ -14,7 +14,7 @@ then
     exit 1
 fi
 
-npm install googlemaps feedparser node-units tvdb crypto-js method-override 500px process async wordnik node-uuid underscore request sandbox express moment-timezone moment jade databank databank-redis ent passport passport-local password-hash connect-flash 
+npm install googlemaps feedparser node-units tvdb method-override 500px process async wordnik node-uuid underscore request sandbox express moment-timezone moment jade databank databank-redis ent passport passport-local password-hash connect-flash 
 
 cd public/
 wget https://github.com/twbs/bootstrap/releases/download/v3.3.2/bootstrap-3.3.2-dist.zip
diff --git a/modules/crypto/README.md b/modules/crypto/README.md
index d037b42..e866796 100644
--- a/modules/crypto/README.md
+++ b/modules/crypto/README.md
@@ -7,15 +7,9 @@ This module calculates different hashes or ciphertexts for some algorithms.
 
 ### Commands
 
-#### ~md5 [text]
-Calculate the MD5 hash of the given text.
+#### ~hash [algorithm] [text]
+Calculate the hash of the given text using [algorithm].
 
-#### ~sha1 [text]
-Calculate the SHA1 hash of the given text.
-
-#### ~sha256 [text]
-Calculate the SHA256 hash of the given text.
-
-#### ~aes "[text]" "[key]"
-Calculates the  hash of the given text.
+#### ~random [number]
+Gives [number] bytes of cryptographically strong pseudo-random data as hex string.
 
diff --git a/modules/crypto/crypto.js b/modules/crypto/crypto.js
index 842b720..2d25aac 100644
--- a/modules/crypto/crypto.js
+++ b/modules/crypto/crypto.js
@@ -3,32 +3,40 @@
  * Description: Allows the magic of cryptography to take place.
  */
 
-var MD5 = require('crypto-js/md5');
-var SHA1 = require('crypto-js/sha1');
-var SHA256 = require('crypto-js/sha256');
-var SHA512 = require('crypto-js/sha512');
-var AES = require('crypto-js/aes');
+var cr = require('crypto');
 
 var crypto = function(dbot) {
     this.commands = {
-        '~md5': function(event) {
-            event.reply("MD5 hash of "+event.input[1]+" is: "+MD5(event.input[1]));
+        '~hash': function(event) {
+            var hash = event.params[1];
+            try {
+                var h = cr.createHash(hash);
+                var tohash = event.params.splice(2, event.params.length-1).join(' ');
+                h.update(tohash);
+                event.reply(hash+" of \""+tohash+"\" is: "+h.digest('hex'));
+            } catch(err) {
+                event.reply(err);
+            }
         },
-        '~sha1': function(event) {
-            event.reply("SHA1 hash of "+event.input[1]+" is: "+SHA1(event.input[1]));
-        },
-        '~sha256': function(event) {
-            event.reply("SHA256 hash of "+event.input[1]+" is: "+SHA256(event.input[1]));
-        },
-        '~aes': function(event) {
-            event.reply("AES of "+event.input[1]+" is: "+AES.encrypt(event.input[1],event.input[2]));
+        '~random': function(event) {
+            try {
+                var count = parseInt(event.params[1]);
+                if(count > 222) {
+                    event.reply("Sorry man, I can't paste that much random data.");
+                    return;
+                }
+                cr.randomBytes(count, function(err,buf) {
+                    if(err) {
+                        event.reply(err);
+                        return;
+                    }
+                    event.reply(buf.toString('hex'));
+                });
+            } catch (err) {
+                event.reply(err);
+            }
         }
     };
-
-    this.commands['~md5'].regex = /^md5 ([^ ]+)$/;
-    this.commands['~sha1'].regex = /^sha1 ([^ ]+)$/;
-    this.commands['~sha256'].regex = /^sha256 ([^ ]+)$/;
-    this.commands['~aes'].regex = /^aes "(.*)" "(.*)"$/;
 };
 
 exports.fetch = function(dbot) {