Initial commit of intern.ccwn.org contentsHEADmaster

1 files changed, 79 insertions, 0 deletions

diff --git a/js/dojo/dojox/encoding/digests/_base.js b/js/dojo/dojox/encoding/digests/_base.js
new file mode 100644
index 0000000..7ab46a9
--- /dev/null
+++ b/js/dojo/dojox/encoding/digests/_base.js
@@ -0,0 +1,79 @@
+//>>built
+define("dojox/encoding/digests/_base", ["dojo/_base/lang"], function(lang){
+	var d = lang.getObject("dojox.encoding.digests", true);
+	/*=====
+		d = dojox.encoding.digests;
+	=====*/
+
+	//TODO: see if it makes sense to meld this into one with the
+	//	crypto base enums
+	d.outputTypes={
+		//	summary:
+		//		Enumeration for input and output encodings.
+		Base64:0, Hex:1, String:2, Raw:3
+	};
+
+	//	word-based addition
+	d.addWords=function(/* word */a, /* word */b){
+		//	summary:
+		//		add a pair of words together with rollover
+		var l=(a&0xFFFF)+(b&0xFFFF);
+		var m=(a>>16)+(b>>16)+(l>>16);
+		return (m<<16)|(l&0xFFFF);	//	word
+	};
+
+	//	word-based conversion method, for efficiency sake;
+	//	most digests operate on words, and this should be faster
+	//	than the encoding version (which works on bytes).
+	var chrsz=8;	//	16 for Unicode
+	var mask=(1<<chrsz)-1;
+
+	d.stringToWord=function(/* string */s){
+		//	summary:
+		//		convert a string to a word array
+		var wa=[];
+		for(var i=0, l=s.length*chrsz; i<l; i+=chrsz){
+			wa[i>>5]|=(s.charCodeAt(i/chrsz)&mask)<<(i%32);
+		}
+		return wa;	//	word[]
+	};
+
+	d.wordToString=function(/* word[] */wa){
+		//	summary:
+		//		convert an array of words to a string
+		var s=[];
+		for(var i=0, l=wa.length*32; i<l; i+=chrsz){
+			s.push(String.fromCharCode((wa[i>>5]>>>(i%32))&mask));
+		}
+		return s.join("");	//	string
+	}
+
+	d.wordToHex=function(/* word[] */wa){
+		//	summary:
+		//		convert an array of words to a hex tab
+		var h="0123456789abcdef", s=[];
+		for(var i=0, l=wa.length*4; i<l; i++){
+			s.push(h.charAt((wa[i>>2]>>((i%4)*8+4))&0xF)+h.charAt((wa[i>>2]>>((i%4)*8))&0xF));
+		}
+		return s.join("");	//	string
+	}
+	d.wordToBase64=function(/* word[] */wa){
+		//	summary:
+		//		convert an array of words to base64 encoding, should be more efficient
+		//		than using dojox.encoding.base64
+		var p="=", tab="ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/", s=[];
+		for(var i=0, l=wa.length*4; i<l; i+=3){
+			var t=(((wa[i>>2]>>8*(i%4))&0xFF)<<16)|(((wa[i+1>>2]>>8*((i+1)%4))&0xFF)<<8)|((wa[i+2>>2]>>8*((i+2)%4))&0xFF);
+			for(var j=0; j<4; j++){
+				if(i*8+j*6>wa.length*32){
+					s.push(p);
+				} else {
+					s.push(tab.charAt((t>>6*(3-j))&0x3F));
+				}
+			}
+		}
+		return s.join("");	//	string
+	};
+
+	return d;
+});