From 29e50956daeadaa6786b7cf34ab96387e5295bb6 Mon Sep 17 00:00:00 2001
From: ausiv4 <ausiv4@eb105b4a-77de-11de-a249-6bf219df57d5>
Date: Fri, 7 Aug 2009 03:38:03 +0000
Subject: This update separates the register functionality from the login
 library. The login script is now .3 kb smaller, but there is a new 1.1 kb
 register file. I think that registrations are rare enough relative to logins
 that this should be a worthwhile tradeoff. This also prepares a framework for
 importing an update file, which will allow existing installations to upgrade
 from less secure authentication protocols, so some of the overhead in srp.js
 that was added here will help reduce the size as we add the update
 functionality.

---
 django/srpproject/srp/views.py             |   2 -
 django/srpproject/templates/register.html  |   1 +
 javascript/jsPacker/build-pack-register.sh |   2 +
 javascript/jsPacker/srp.min.js             |   2 +-
 javascript/jsPacker/srp_register.min.js    |   1 +
 javascript/srp.js                          | 120 ++++++++++++-----------------
 javascript/srp_register.js                 |  52 +++++++++++++
 7 files changed, 106 insertions(+), 74 deletions(-)
 create mode 100644 javascript/jsPacker/build-pack-register.sh
 create mode 100644 javascript/jsPacker/srp_register.min.js
 create mode 100644 javascript/srp_register.js

diff --git a/django/srpproject/srp/views.py b/django/srpproject/srp/views.py
index ffc5679..38d5503 100644
--- a/django/srpproject/srp/views.py
+++ b/django/srpproject/srp/views.py
@@ -51,7 +51,6 @@ def register_salt(request):
 def register_user(request):
     from django.contrib import auth
     models.SRPUser(salt=request.session["srp_salt"], username=request.session["srp_name"], verifier=request.POST["v"]).save()
-    # auth.models.SRPUser.objects.create_user(request.session["srp_name"],'', str(request.POST["v"]))
     del request.session["srp_salt"]
     del request.session["srp_name"]
     return HttpResponse("<ok/>", mimetype="text/xml");
@@ -107,7 +106,6 @@ def handshake(request):
 def verify(request):
     import hashlib
     from django.contrib.auth import login, authenticate
-    # H(A, M, K)
     try:
         user = authenticate(username=request.session["srp_I"], M=(request.POST["M"], request.session["srp_M"]))
         if user:
diff --git a/django/srpproject/templates/register.html b/django/srpproject/templates/register.html
index 2119802..102daed 100644
--- a/django/srpproject/templates/register.html
+++ b/django/srpproject/templates/register.html
@@ -9,6 +9,7 @@
     <script src="{{ static_files }}/srp.js"></script>
     {% endcomment %}
     <script src="{{ static_files }}/jsPacker/srp.min.js"></script>
+    <script src="{{ static_files }}/jsPacker/srp_register.min.js"></script>
     <script type="text/javascript">
     function register()
     {
diff --git a/javascript/jsPacker/build-pack-register.sh b/javascript/jsPacker/build-pack-register.sh
new file mode 100644
index 0000000..6b8f124
--- /dev/null
+++ b/javascript/jsPacker/build-pack-register.sh
@@ -0,0 +1,2 @@
+#!/bin/bash
+perl jsPacker.pl -fsq -e62 -i ../srp_register.js -o srp_register.min.js
diff --git a/javascript/jsPacker/srp.min.js b/javascript/jsPacker/srp.min.js
index 8639312..ac22414 100644
--- a/javascript/jsPacker/srp.min.js
+++ b/javascript/jsPacker/srp.min.js
@@ -1 +1 @@
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d=o.1l%n,r=(o.s<0)?n-1:0;D(o.t>0)D(d==0)r=o[0]%n;J P(C i=o.t-1;i>=0;--i)r=(d*r+o[i])%n;F r}E 4N(m){C ac=m.1k();D((o.1k()&&ac)||m.1E()==0)F G.1t;C u=m.2x(),v=o.2x();C a=1G(1),b=1G(0),c=1G(0),d=1G(1);L(u.1E()!=0){L(u.1k()){u.1h(1,u);D(ac){D(!a.1k()||!b.1k()){a.2y(o,a);b.U(m,b)}a.1h(1,a)}J D(!b.1k())b.U(m,b);b.1h(1,b)}L(v.1k()){v.1h(1,v);D(ac){D(!c.1k()||!d.1k()){c.2y(o,c);d.U(m,d)}c.1h(1,c)}J D(!d.1k())d.U(m,d);d.1h(1,d)}D(u.1c(v)>=0){u.U(v,u);D(ac)a.U(c,a);b.U(d,b)}J{v.U(u,v);D(ac)c.U(a,c);d.U(b,d)}}D(v.1c(G.1s)!=0)F G.1t;D(d.1c(m)>=0)F d.2V(m);D(d.1E()<0)d.2y(m,d);J F d;D(d.1E()<0)F d.3p(m);J F d}C 1j=[2,3,5,7,11,13,17,19,23,29,31,37,41,43,47,53,59,61,67,71,73,79,83,89,97,9s,9r,9q,9p,9o,5I,9n,9m,9l,9k,9j,9i,9h,9g,9f,9e,9d,9c,9b,9a,99,98,96,95,94,93,92,91,90,8Z,8Y,8X,8W,8V,8U,8T,8S,8R,8Q,8P,8O,8N,8M,8L,8K,8J,8I,8H,8G,8F,8E,8D,8C,8B,8A,8z,8y,8x,8w,8v,8u,8t,8s,8r,8q,8p,8o,8n,8m,8l,8k,8j];C 5H=(1<<26)/1j[1j.V-1];E 4J(t){C i,x=o.1F();D(x.t==1&&x[0]<=1j[1j.V-1]){P(i=0;i<1j.V;++i)D(x[0]==1j[i])F 1D;F 1n}D(x.1k())F 1n;i=1;L(i<1j.V){C m=1j[i],j=i+1;L(j<1j.V&&m<5H)m*=1j[j++];m=x.5q(m);L(i<j)D(m%1j[i++]==0)F 1n}F x.5o(t)}E 5n(t){C 2b=o.2V(G.1s);C k=2b.27();D(k<=0)F 1n;C r=2b.56(k);t=(t+1)>>1;D(t>1j.V)t=1j.V;C a=Q();P(C i=0;i<t;++i){a.2c(1j[i]);C y=a.2u(r,o);D(y.1c(G.1s)!=0&&y.1c(2b)!=0){C j=1;L(j++<k&&y.1c(2b)!=0){y=y.5G(2,o);D(y.1c(G.1s)==0)F 1n}D(y.1c(2b)!=0)F 1n}}F 1D}G.H.3A=5F;G.H.5E=5D;G.H.5C=5B;G.H.3z=5A;G.H.1S=5z;G.H.2Y=5y;G.H.2y=5x;G.H.3y=5w;G.H.2a=5v;G.H.5u=5t;G.H.5s=5r;G.H.5q=5p;G.H.5o=5n;G.H.2x=5m;G.H.3x=5l;G.H.8i=5k;G.H.8h=5j;G.H.1E=5i;G.H.8g=5h;G.H.8f=5g;G.H.1K=5f;G.H.3w=5e;G.H.8e=5d;G.H.8d=5c;G.H.8c=5b;G.H.8b=5a;G.H.2P=58;G.H.2X=57;G.H.56=55;G.H.27=54;G.H.8a=51;G.H.50=4Z;G.H.88=4Y;G.H.87=4X;G.H.86=4W;G.H.3p=4V;G.H.2V=4U;G.H.3o=4T;G.H.4S=4R;G.H.85=4Q;G.H.84=4P;G.H.2u=4O;G.H.82=4N;G.H.2w=4M;G.H.81=4L;G.H.4K=4J;E 49(4E,4D,4F,4G){C 4I="80";C N=T G(4I,16);C g=T G("2");C k=T G("7Z",16);C 4H=T 3v();C 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diff --git a/javascript/jsPacker/srp_register.min.js b/javascript/jsPacker/srp_register.min.js
new file mode 100644
index 0000000..6c5a1d5
--- /dev/null
+++ b/javascript/jsPacker/srp_register.min.js
@@ -0,0 +1 @@
+eval(function(p,a,c,k,e,d){e=function(c){return(c<a?'':e(parseInt(c/a)))+((c=c%a)>35?String.fromCharCode(c+29):c.toString(36))};if(!''.replace(/^/,String)){while(c--)d[e(c)]=k[c]||e(c);k=[function(e){return d[e]}];e=function(){return'\\w+'};c=1};while(c--)if(k[c])p=p.replace(new RegExp('\\b'+e(c)+'\\b','g'),k[c]);return p}('9 g(){3 1;b.a.e=9(){1=5;3 w=5.p()+5.o("e/f/");3 c="I="+5.K();5.n(w,c,5.u)};b.a.u=9(){3 2=1.k();8(2.j==4&&2.i==h){8(2.7.6("f").d>0){3 s=1.t(2.7.6("f")[0]);3 x=1.J(s);3 v=1.H().G(x,1.F());1.q(v.E(D))}C 8(2.7.6("r").d>0){1.B(1.t(2.7.6("r")[0]))}}};b.a.q=9(v){3 c="v="+v;3 m=1.p()+1.o("e/A/");1.n(m,c,1.l)};b.a.l=9(){3 2=1.k();8(2.j==4&&2.i==h){8(2.7.6("z").d>0){1.y()}}}};g();',47,47,'|that|xhr|var||this|getElementsByTagName|responseXML|if|function|prototype|SRP|params|length|register|salt|SRP_REGISTER|200|status|readyState|getxhr|register_user|auth_url|ajaxRequest|paths|geturl|register_send_verifier|error||innerxml|register_receive_salt||handshake_url||identify|ok|user|error_message|else|16|toString|getN|modPow|getg||calcX|getI'.split('|'),0,{}))
diff --git a/javascript/srp.js b/javascript/srp.js
index d0e9914..cd05a5e 100644
--- a/javascript/srp.js
+++ b/javascript/srp.js
@@ -11,21 +11,46 @@ function SRP(username, password, ser, base_url)
     var Astr = A.toString(16);
     var B = null;
     var Bstr = null;
-    var I = username;
     var u = null;
-    var p = password;
     var x = null;
     var S = null;
     var K = null;
     var M = null;
     var M2 = null;
-    var xhr = null;
     var url = base_url;
     var server = ser;
     var that = this;
     var authenticated = false;
     var hash_import = false;
-    
+    var I = username;
+    var p = password;
+    var xhr = null;
+
+    this.getI = function()
+    {
+        return I;
+    };
+    this.getxhr = function()
+    {
+        return xhr;
+    };
+    this.geturl = function()
+    {
+        return url;
+    };
+    this.getg = function()
+    {
+        return g;
+    };
+    this.getN = function()
+    {
+        return N;
+    };
+    this.calcX = function(s)
+    {
+        return new BigInteger(SHA256(s + SHA256(I + ":" + p)), 16);
+    };
+
     function paths(str)
     {
         // For now, str will be the django path
@@ -35,9 +60,10 @@ function SRP(username, password, ser, base_url)
             return str;
         }
     };
+    this.paths = paths;
     // Perform ajax requests at the specified url, with the specified parameters
     // Calling back the specified function.
-    function ajaxRequest(full_url, params, callback)
+    this.ajaxRequest = function(full_url, params, callback)
     {
         if( window.XMLHttpRequest)
             xhr = new XMLHttpRequest();
@@ -66,7 +92,7 @@ function SRP(username, password, ser, base_url)
     };
 
     // Get the text content of an XML node
-    function innerxml (node)
+    this.innerxml = function(node)
     {
         return node.firstChild.nodeValue;
     };
@@ -75,57 +101,13 @@ function SRP(username, password, ser, base_url)
     function isdefined ( variable)
     {
         return (typeof(window[variable]) != "undefined");
-    };
-
-    // Initiate the registration process
-    this.register = function()
-    {
-        var handshake_url = url + paths("register/salt/");
-        var params = "I="+I;
-        ajaxRequest(handshake_url, params, register_receive_salt);
-    };
-
-    // Receive the salt for registration
-    function register_receive_salt()
-    {
-        if(xhr.readyState == 4 && xhr.status == 200) {
-	        if(xhr.responseXML.getElementsByTagName("salt").length > 0)
-	        {
-	            var s = innerxml(xhr.responseXML.getElementsByTagName("salt")[0]);
-	            x = new BigInteger(SHA256(s + SHA256(I + ":" + p)), 16);
-	            var v = g.modPow(x, N);
-	            register_send_verifier(v.toString(16));
-	        }
-	        else if(xhr.responseXML.getElementsByTagName("error").length > 0)
-	        {
-	            that.error_message(innerxml(xhr.responseXML.getElementsByTagName("error")[0]));
-	        }
-        }
-    };
-    // Send the verifier to the server
-    function register_send_verifier(v)
-    {
-        var params = "v="+v;
-        var auth_url = url + paths("register/user/");
-        ajaxRequest(auth_url, params, register_user);
-    };
-    // The user has been registered successfully, now login
-    function register_user()
-    {
-        if(xhr.readyState == 4 && xhr.status == 200) {
-		    if(xhr.responseXML.getElementsByTagName("ok").length > 0)
-		    {
-		        that.identify();
-            }
-        }
-    };
-    
+    };    
     // Start the login process by identifying the user
     this.identify = function()
     {
         var handshake_url = url + paths("handshake/");
         var params = "I="+I+"&A="+Astr;
-        ajaxRequest(handshake_url, params, receive_salts);
+        that.ajaxRequest(handshake_url, params, receive_salts);
     };
 
     // Receive login salts from the server, start calculations
@@ -173,7 +155,7 @@ function SRP(username, password, ser, base_url)
     {
         var params = "M="+M;
         var auth_url = url+paths("authenticate/");
-        ajaxRequest(auth_url, params, confirm_authentication);
+        that.ajaxRequest(auth_url, params, confirm_authentication);
     };
     // Receive M2 from the server and verify it
     function confirm_authentication()
@@ -181,7 +163,7 @@ function SRP(username, password, ser, base_url)
         if(xhr.readyState == 4 && xhr.status == 200) {
             if(xhr.responseXML.getElementsByTagName("M").length > 0)
 		    {
-		        if(innerxml(xhr.responseXML.getElementsByTagName("M")[0]) == M2)
+		        if(that.innerxml(xhr.responseXML.getElementsByTagName("M")[0]) == M2)
 		        {
 		            that.success();
 	                authenticated = true;
@@ -191,10 +173,18 @@ function SRP(username, password, ser, base_url)
 		    }
 		    else if (xhr.responseXML.getElementsByTagName("error").length > 0)
 		    {
-		        that.error_message(innerxml(xhr.responseXML.getElementsByTagName("error")[0]));
+		        that.error_message(that.innerxml(xhr.responseXML.getElementsByTagName("error")[0]));
 		    }
         }
     };
+    function import_file(fname)
+    {
+        var scriptElt = document.createElement('script');
+        scriptElt.type = 'text/javascript';
+        scriptElt.src = fname;
+        document.getElementsByTagName('head')[0].appendChild(scriptElt);
+        
+    };
     // If we need SHA1 or MD5, we need to load the javascript files
     function import_hashes()
     {
@@ -205,25 +195,13 @@ function SRP(username, password, ser, base_url)
         var path = arr.slice(0, arr.length-1).join("/");
         // If this file is called srp.min.js, we will load the packed hash file
         if(arr[arr.length-1] == "srp.min.js")
-        {
-            var scriptElt = document.createElement('script');
-            scriptElt.type = 'text/javascript';
-            scriptElt.src = path+"/hash.min.js";
-            document.getElementsByTagName('head')[0].appendChild(scriptElt);
-        }
+            import_file(path+"/hash.min.js");
         // Otherwise, this file is presumably srp.js, and we will load individual hash files
         else
         {
-            var scriptElt = document.createElement('script');
-            scriptElt.type = 'text/javascript';
-            scriptElt.src = path +"/MD5.js";
-            document.getElementsByTagName('head')[0].appendChild(scriptElt);
-            scriptElt = document.createElement('script');
-            scriptElt.type = 'text/javascript';
-            scriptElt.src = path +"/SHA1.js";
-            document.getElementsByTagName('head')[0].appendChild(scriptElt);
-        }
-        
+            import_file(path+"/MD5.js");
+            import_file(path+"/SHA1.js");
+        }        
     }
     // If someone wants to use the session key for encrypting traffic, they can
     // access the key with this function.
diff --git a/javascript/srp_register.js b/javascript/srp_register.js
new file mode 100644
index 0000000..31b8ab8
--- /dev/null
+++ b/javascript/srp_register.js
@@ -0,0 +1,52 @@
+function SRP_REGISTER()
+{
+    var that;
+
+    // Initiate the registration process
+    SRP.prototype.register = function()
+    {
+        that = this;
+        var handshake_url = this.geturl() + this.paths("register/salt/");
+        var params = "I="+this.getI();
+        this.ajaxRequest(handshake_url, params, this.register_receive_salt);
+    };
+
+    // Receive the salt for registration
+    SRP.prototype.register_receive_salt = function()
+    {
+        var xhr = that.getxhr();
+        if(xhr.readyState == 4 && xhr.status == 200) {
+            if(xhr.responseXML.getElementsByTagName("salt").length > 0)
+            {
+                var s = that.innerxml(xhr.responseXML.getElementsByTagName("salt")[0]);
+                var x = that.calcX(s);
+                var v = that.getg().modPow(x, that.getN());
+                that.register_send_verifier(v.toString(16));
+            }
+            else if(xhr.responseXML.getElementsByTagName("error").length > 0)
+            {
+                that.error_message(that.innerxml(xhr.responseXML.getElementsByTagName("error")[0]));
+            }
+        }
+    };
+        // Send the verifier to the server
+    SRP.prototype.register_send_verifier = function(v)
+    {
+        var params = "v="+v;
+        var auth_url = that.geturl() + that.paths("register/user/");
+        that.ajaxRequest(auth_url, params, that.register_user);
+    };
+
+    // The user has been registered successfully, now login
+    SRP.prototype.register_user = function()
+    {
+        var xhr = that.getxhr();
+        if(xhr.readyState == 4 && xhr.status == 200) {
+	        if(xhr.responseXML.getElementsByTagName("ok").length > 0)
+	        {
+	            that.identify();
+            }
+        }
+    };  
+};
+SRP_REGISTER();
-- 
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