CryptoJS Changeset - e1ac6a6fd451

Changeset - e1ac6a6fd451

Parent rev.

Child rev.

[Not reviewed]

default

0 4 0

Laman - 6 years ago 2018-07-07 07:24:17

blake objectified, utility functions refactored out

4 files changed with 103 insertions and 84 deletions:

blake.js

chacha.js

crypto.html

util.js

0 comments (0 inline, 0 general)

blake.js

➞

Show inline comments

-import {str2utf8} from "./util.js";
+// https://tools.ietf.org/html/rfc7693
 const MASK=0xffffffff;
 const BLOCK_LEN=64;
 const IV=[0x6A09E667,0xBB67AE85,0x3C6EF372,0xA54FF53A,0x510E527F,0x9B05688C,0x1F83D9AB,0x5BE0CD19];
 function padEnd(arr,length,val=0){
 	return arr.concat((new Array(length-arr.length)).fill(0));
+}
 function rrot(x,shift){
 	return ((x>>>shift)|(x<<(32-shift)))&MASK;
+}
 function BLAKE2S(outputLen=32,key=[]){
 	this._buffer=[];
 	this._dataLen=0;
 	this._outputLen=outputLen;
 	this._state=IV.slice();
 	this._state[0]^=0x01010000^(key.length<<8)^this._outputLen;
 	if(key.length>0){this.update(padEnd(key,BLOCK_LEN,0));}
+}
 BLAKE2S.prototype.update=function(data){
 	for(let i=0;i<data.length;i++){
 		if(this._buffer.length<BLOCK_LEN){
 			this._buffer.push(data[i]);
 			this._dataLen++;
+		}
 		else{
 			this._compress(false);
 			this._buffer=[];
+		}
+	}
 };
 BLAKE2S.prototype.digest=function(){
 	this._buffer=padEnd(this._buffer,BLOCK_LEN,0);
 	this._compress(true);
 	return int32s2bytes(this._state).slice(0,this._outputLen);
 };
 BLAKE2S.prototype._compress=function(last){
 const SIGMA=[
 	[0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15],
 	[14,10,4,8,9,15,13,6,1,12,0,2,11,7,5,3],
 	[11,8,12,0,5,2,15,13,10,14,3,6,7,1,9,4],
 	[7,9,3,1,13,12,11,14,2,6,5,10,4,0,15,8],
 	[9,0,5,7,2,4,10,15,14,1,11,12,6,8,3,13],
 	[2,12,6,10,0,11,8,3,4,13,7,5,15,14,1,9],
 	[12,5,1,15,14,13,4,10,0,7,6,3,9,2,8,11],
 	[13,11,7,14,12,1,3,9,5,0,15,4,8,6,2,10],
 	[6,15,14,9,11,3,0,8,12,2,13,7,1,4,10,5],
 	[10,2,8,4,7,6,1,5,15,11,9,14,3,12,13,0]
 ];
 function rrot(x,shift){
 	return ((x>>>shift)|(x<<(32-shift)))&MASK;
+}
 function g(arr,ia,ib,ic,id,x,y){
 	let a=arr[ia], b=arr[ib], c=arr[ic], d=arr[id];
 	// console.log(">> "+[a,b,c,d,x,y].map(x=>(x>>>0).toString(16)));
 	a=(a+b+x)&MASK; d=rrot(d^a,16);
 	// console.log([a,d].map(x=>(x>>>0).toString(16)));
 	c=(c+d)&MASK; b=rrot(b^c,12);
 	// console.log([c,b].map(x=>(x>>>0).toString(16)));
 	a=(a+b+y)&MASK; d=rrot(d^a,8);
 	// console.log([a,d].map(x=>(x>>>0).toString(16)));
 	c=(c+d)&MASK; b=rrot(b^c,7);
 	// console.log([c,b].map(x=>(x>>>0).toString(16)));
 	// console.log("<< "+[a,b,c,d].map(x=>(x>>>0).toString(16)));
 	arr[ia]=a; arr[ib]=b; arr[ic]=c; arr[id]=d;
+}
 function f(state,data,offset,last){
 	console.log("... "+data.map(x=>(x>>>0).toString(16)));
 	let v=state.concat(IV);
 	v[12]^=offset&MASK;
 	v[13]^=0; // !! offset>>>32
 	let v=this._state.concat(IV);
 	v[12]^=this._dataLen&MASK;
 	v[13]^=(this._dataLen/0x100000000)&MASK;
 	if(last){v[14]^=MASK;}
 	let data=bytes2int32s(this._buffer);
 	for(let i=0;i<10;i++){
 		console.log(i+": "+(v.map(x=>(x>>>0).toString(16))).join(" "));
 		let perm=SIGMA[i%10];
 		g(v,0,4,8,12,data[perm[0]],data[perm[1]]);
 		g(v,1,5,9,13,data[perm[2]],data[perm[3]]);
 		g(v,2,6,10,14,data[perm[4]],data[perm[5]]);
 		g(v,3,7,11,15,data[perm[6]],data[perm[7]]);
 		this._mix(v,0,4,8,12,data[perm[0]],data[perm[1]]);
 		this._mix(v,1,5,9,13,data[perm[2]],data[perm[3]]);
 		this._mix(v,2,6,10,14,data[perm[4]],data[perm[5]]);
 		this._mix(v,3,7,11,15,data[perm[6]],data[perm[7]]);
 		g(v,0,5,10,15,data[perm[8]],data[perm[9]]);
 		g(v,1,6,11,12,data[perm[10]],data[perm[11]]);
 		g(v,2,7,8,13,data[perm[12]],data[perm[13]]);
 		g(v,3,4,9,14,data[perm[14]],data[perm[15]]);
 		this._mix(v,0,5,10,15,data[perm[8]],data[perm[9]]);
 		this._mix(v,1,6,11,12,data[perm[10]],data[perm[11]]);
 		this._mix(v,2,7,8,13,data[perm[12]],data[perm[13]]);
 		this._mix(v,3,4,9,14,data[perm[14]],data[perm[15]]);
+	}
 	for(let i=0;i<8;i++){
 		state[i]^=v[i]^v[i+8];
+	}
+}
 function blake2s(data,dataLen,keyLen=0,outputLen=32){
 	let state=IV.slice();
 	state[0]^=0x01010000^(keyLen<<8)^outputLen;
 	if(data.length>1){
 		for(let i=0;i<data.length-1;i++){f(state,data[i],(i+1)*BLOCK_LEN,false);}
+	}
 	if(keyLen==0){f(state,data[data.length-1],dataLen,true);}
 	else{f(state,data[data.length-1],dataLen+BLOCK_LEN,true);}
 	return state.slice(0,outputLen);
 	this._state=this._state.map((x,i)=>x^v[i]^v[i+8]);
+}
 function bytes2int32(arr){
 	return arr.reduce((acc,b,i)=>acc|b<<(i*8));
+}
 function bytes2int32s(arr){
 	let res=[];
 	for(let i=0;i<arr.length;i+=4){
 		res.push(bytes2int32(arr.slice(i,4)));
+	}
 	return res;
+}
 BLAKE2S.prototype._mix=function(arr,ia,ib,ic,id,x,y){
 	let a=arr[ia], b=arr[ib], c=arr[ic], d=arr[id];
 	a=(a+b+x)&MASK; d=rrot(d^a,16);
 	c=(c+d)&MASK; b=rrot(b^c,12);
 	a=(a+b+y)&MASK; d=rrot(d^a,8);
 	c=(c+d)&MASK; b=rrot(b^c,7);
 	arr[ia]=a; arr[ib]=b; arr[ic]=c; arr[id]=d;
 };
 function int322bytes(x){
 	let res=[];
 	for(let i=0;i<4;i++){
 		res.push(x&0xff);
 		x>>>=8;
+	}
 	return res;
+}
 function int32s2bytes(arr){
 	return arr.map(int322bytes).reduce((acc,bytes)=>acc.concat(bytes));
 function blake2s(data,outputLen=32,key=[]){
 	let h=new BLAKE2S(outputLen,key);
 	for(let i=0;i<data.length;i+=BLOCK_LEN){h.update(data.slice(i,i+BLOCK_LEN));}
 	return h.digest();
+}
 let msg=[97,98,99];
 let data=[bytes2int32s(msg).concat(0,0,0,0,0,0,0,0,0,0,0,0,0,0,0)];
 //console.log(int32s2bytes(blake2s(data,msg.length)).map(x=>x.toString(16)).join(" "));
 console.log(int32s2bytes(blake2s(data,msg.length,outputLen=16)).map(x=>x.toString(16)).join(" "));
 console.log(bytes2hex(blake2s(msg,msg.length,0,16))=="aa4938119b1dc7b87cbad0ffd200d0ae");
 console.log(bytes2hex(blake2s(msg,msg.length,0,20))=="5ae3b99be29b01834c3b508521ede60438f8de17");
 console.log(bytes2hex(blake2s(msg,msg.length,0,28))=="0b033fc226df7abde29f67a05d3dc62cf271ef3dfea4d387407fbd55");
 console.log(bytes2hex(blake2s(msg,msg.length))=="508c5e8c327c14e2e1a72ba34eeb452f37458b209ed63a294d999b4c86675982");

chacha.js

➞

Show inline comments

 // https://tools.ietf.org/html/rfc7693
 MASK=0xffffffff;
 function int2bytes(x){
 	var res=new Array(4);
 	for(var i=0;i<4;i++){
 		res[i]=x&0xff;

crypto.html

➞

Show inline comments

 <!DOCTYPE html>
 <html>
 <head>
 	<!--<script type="text/javascript" src="util.js" />-->
 	<script type="module" src="blake.js" />
 	<script type="text/javascript" src="util.js"></script>
 	<script type="text/javascript" src="blake.js"></script>
 </head>
 <body>
 	<script type="text/javascript">
 		console.log(str2utf8("abc"));
 	</script>
 </body>

util.js

➞

Show inline comments

 export function str2utf8(s){
 function bytes2int32(arr){
 	return arr.reduce((acc,b,i)=>acc|b<<(i*8));
+}
 function bytes2int32s(arr){
 	let res=[];
 	for(let i=0;i<arr.length;i+=4){
 		res.push(bytes2int32(arr.slice(i,i+4)));
+	}
 	return res;
+}
 function int322bytes(x){
 	let res=[];
 	for(let i=0;i<4;i++){
 		res.push(x&0xff);
 		x>>>=8;
+	}
 	return res;
+}
 function int32s2bytes(arr){
 	return arr.map(int322bytes).reduce((acc,bytes)=>acc.concat(bytes));
+}
 function bytes2hex(arr){
 	return arr.map(x=>x.toString(16).padStart(2,"0")).join("");
+}
 function str2utf8(s){
 	let res=[];
 	let c=s.codePointAt(0);
 	for(let i=0;c!==undefined;i++,c=s.codePointAt(i)){
 		console.log(c);
 		if(c<0x80){res.push(c);}
 		else if(c<0x800){
@@ @@ -20,10 +49,10 @@ export function str2utf8(s){ @@
 			res.push(0b10000000|(c&0b111111));
+		}
+	}
 	return res;
+}
 console.log(str2utf8("$").map(x=>x.toString(16)));
+/*console.log(str2utf8("$").map(x=>x.toString(16)));
 console.log(str2utf8("¢").map(x=>x.toString(16)));
 console.log(str2utf8("€").map(x=>x.toString(16)));
 console.log(str2utf8("𐍈").map(x=>x.toString(16)));
+console.log(str2utf8("𐍈").map(x=>x.toString(16)));*/

0 comments (0 inline, 0 general)