update README

.gitignore

@@ -0,0 +1,2 @@
+node_modules/
+covreporter

.travis.yml

@@ -10,3 +10,6 @@ install:
   - npm install
 script:
   - npm run-script coveralls
+branches:
+  only:
+    - master

CHANGELOG.md

@@ -1,4 +1,12 @@
-# v0.1.3 / 2015-01-06
+# v0.1.4 / 2015-01-24
+
+* Improve performance.
+
+# v0.1.3 / 2015-01-09
+
+* Improve performance.
+
+# v0.1.2 / 2015-01-06
 
 * Add bower package.
 * Fixed JSHint warnings.
@@ -7,8 +15,8 @@
 
 # v0.1.1 / 2014-07-27
 
-Fixed accents bug
+* Fixed accents bug
 
 # v0.1.0 / 2014-01-05
 
-Initial release
+* Initial release

README.md

@@ -1,5 +1,5 @@
 # js-sha256
-[![Build Status](https://api.travis-ci.org/emn178/js-sha256.png)](https://travis-ci.org/emn178/js-sha256)
+[![Build Status](https://api.travis-ci.org/emn178/js-sha256.png?branch=master)](https://travis-ci.org/emn178/js-sha256?branch=master)
 [![Build Status](https://coveralls.io/repos/emn178/js-sha256/badge.png?branch=master)](https://coveralls.io/r/emn178/js-sha256?branch=master)  
 [![NPM](https://nodei.co/npm/js-sha256.png?stars&downloads)](https://nodei.co/npm/js-sha256/)  
 A simple SHA-256 / SHA-224 hash function for JavaScript supports UTF-8 encoding.
@@ -94,6 +94,10 @@ Output
     72726d8818f693066ceb69afa364218b692e62ea92b385782363780f47529c21
     dfbab71afdf54388af4d55f8bd3de8c9b15e0eb916bf9125f4a959d4
 
+## Benchmark
+[UTF8](http://jsperf.com/sha256/64)  
+[ASCII](http://jsperf.com/sha256-ascii/)
+
 ## Extensions
 ### jQuery
 If you prefer jQuery style, you can add following code to add a jQuery extension.

bower.json

@@ -1,6 +1,6 @@
 {
   "name": "js-sha256",
-  "version": "0.1.2",
+  "version": "0.1.4",
   "main": ["build/sha256.min.js"],
   "ignore": [
     "samples",

build/sha256.min.js

@@ -1,5 +1,7 @@
-(function(x,H){var y="0123456789abcdef".split(""),I=[1116352408,1899447441,3049323471,3921009573,961987163,1508970993,2453635748,2870763221,3624381080,310598401,607225278,1426881987,1925078388,2162078206,2614888103,3248222580,3835390401,4022224774,264347078,604807628,770255983,1249150122,1555081692,1996064986,2554220882,2821834349,2952996808,3210313671,3336571891,3584528711,113926993,338241895,666307205,773529912,1294757372,1396182291,1695183700,1986661051,2177026350,2456956037,2730485921,2820302411,
+(function(E,J){var G="0123456789abcdef".split(""),F=[1116352408,1899447441,3049323471,3921009573,961987163,1508970993,2453635748,2870763221,3624381080,310598401,607225278,1426881987,1925078388,2162078206,2614888103,3248222580,3835390401,4022224774,264347078,604807628,770255983,1249150122,1555081692,1996064986,2554220882,2821834349,2952996808,3210313671,3336571891,3584528711,113926993,338241895,666307205,773529912,1294757372,1396182291,1695183700,1986661051,2177026350,2456956037,2730485921,2820302411,
-3259730800,3345764771,3516065817,3600352804,4094571909,275423344,430227734,506948616,659060556,883997877,958139571,1322822218,1537002063,1747873779,1955562222,2024104815,2227730452,2361852424,2428436474,2756734187,3204031479,3329325298],k=function(b,g){return F(b,!0,g)},G=function(b,g){return F(b,!1,g)},F=function(b,g,c){g===H&&(g=!0);var e,d,a,r,t,u,v;if(!c&&/[^\x00-\x7F]/.test(b)){c=[];for(d=e=0;d<b.length;d++)a=b.charCodeAt(d),128>a?c[e++]=a:(2048>a?c[e++]=192|a>>6:(55296>a||57344<=a?c[e++]=224|
+3259730800,3345764771,3516065817,3600352804,4094571909,275423344,430227734,506948616,659060556,883997877,958139571,1322822218,1537002063,1747873779,1955562222,2024104815,2227730452,2361852424,2428436474,2756734187,3204031479,3329325298],z=function(e,x){return H(e,!0,x)},I=function(e,x){return H(e,!1,x)},H=function(e,x,f){x===J&&(x=!0);var k,g,l,a,B,C,D;if(!f&&/[^\x00-\x7F]/.test(e)){g=[];for(l=f=0;l<e.length;l++)a=e.charCodeAt(l),128>a?g[f++]=a:(2048>a?g[f++]=192|a>>6:(55296>a||57344<=a?g[f++]=224|
-a>>12:(a=65536+((a&1023)<<10|b.charCodeAt(++d)&1023),c[e++]=240|a>>18,c[e++]=128|a>>12&63),c[e++]=128|a>>6&63),c[e++]=128|a&63);b=c.length;e=(b+8>>6)+1<<4;d=[];for(a=0;a<e;++a)d[a]=0;for(a=0;a<b;++a)d[a>>2]|=c[a]<<(3-(a&3)<<3);d[a>>2]|=128<<(3-(a&3)<<3);d[e-1]=b<<3}else{c=b.length;e=(c+8>>6)+1<<4;d=[];for(a=0;a<e;++a)d[a]=0;for(a=0;a<c;++a)d[a>>2]|=b.charCodeAt(a)<<(3-(a&3)<<3);d[a>>2]|=128<<(3-(a&3)<<3);d[e-1]=c<<3}c=d;g?(e=1779033703,d=3144134277,a=1013904242,r=2773480762,t=1359893119,u=2600822924,
+a>>12:(a=65536+((a&1023)<<10|e.charCodeAt(++l)&1023),g[f++]=240|a>>18,g[f++]=128|a>>12&63),g[f++]=128|a>>6&63),g[f++]=128|a&63);e=g.length;f=(e+8>>6)+1;l=[];for(a=0;a<f;++a)l[a]=k=[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0];for(a=0;a<e;++a)k=l[a>>6],k[(a&63)>>2]|=g[a]<<(3-(a&3)<<3);k[(a&63)>>2]|=128<<(3-(a&3)<<3);k[15]=e<<3}else{k=e.length;f=(k+8>>6)+1;l=[];for(a=0;a<f;++a)l[a]=g=[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0];for(a=0;a<k;++a)g=l[a>>6],g[(a&63)>>2]|=e.charCodeAt(a)<<(3-(a&3)<<3);g[(a&63)>>2]|=128<<(3-(a&
-v=528734635,b=1541459225):(e=3238371032,d=914150663,a=812702999,r=4144912697,t=4290775857,u=1750603025,v=1694076839,b=3204075428);for(var k=0,x=c.length;k<x;k+=16){var h=[],w,m,f;for(f=0;16>f;++f)h[f]=c[k+f];for(f=16;64>f;++f)w=l(h[f-15],7)^l(h[f-15],18)^h[f-15]>>>3,m=l(h[f-2],17)^l(h[f-2],19)^h[f-2]>>>10,h[f]=h[f-16]+w+h[f-7]+m;var n=e,z=d,A=a,D=r,p=t,B=u,C=v,E=b,y;for(f=0;64>f;++f)w=l(n,2)^l(n,13)^l(n,22),m=n&z^n&A^z&A,w+=m,m=l(p,6)^l(p,11)^l(p,25),y=p&B^~p&C,m=E+m+y+I[f]+h[f]&4294967295,E=C,C=
+3)<<3);g[15]=k<<3}k=l;x?(g=1779033703,f=3144134277,l=1013904242,a=2773480762,B=1359893119,C=2600822924,D=528734635,e=1541459225):(g=3238371032,f=914150663,l=812702999,a=4144912697,B=4290775857,C=1750603025,D=1694076839,e=3204075428);for(var z=0,E=k.length;z<E;++z){var y=k[z],m,b,h,c,d,n=g,p=f,q=l,r=a,t=B,u=C,v=D,w=e;for(h=16;64>h;++h)c=b=y[h-15],c=c>>>7|c<<25,b=b>>>18|b<<14,m=c^b^y[h-15]>>>3,c=b=y[h-2],c=c>>>17|c<<15,b=b>>>19|b<<13,b=c^b^y[h-2]>>>10,y[h]=y[h-16]+m+y[h-7]+b<<0;for(h=0;64>h;h+=4)c=
-B,B=p,p=D+m,D=A,A=z,z=n,n=m+w;e+=n;d+=z;a+=A;r+=D;t+=p;u+=B;v+=C;b+=E}c=q(e)+q(d)+q(a)+q(r)+q(t)+q(u)+q(v);g&&(c+=q(b));return c},l=function(b,g){return b>>>g|b<<32-g},q=function(b){for(var g="",c=0;4>c;c++)var e=3-c<<3,g=g+(y[b>>e+4&15]+y[b>>e&15]);return g};"undefined"!=typeof module?(k.sha256=k,k.sha224=G,module.exports=k):x&&(x.sha256=k,x.sha224=G)})(this);
+n>>>2|n<<30,b=n>>>13|n<<19,d=n>>>22|n<<10,m=c^b^d,c=t>>>6|t<<26,b=t>>>11|t<<21,d=t>>>25|t<<7,b=c^b^d,c=n&p^n&q^p&q,d=t&u^~t&v,b=w+b+d+F[h+0]+y[h+0]<<0,m=m+c<<0,w=r+b<<0,r=b+m<<0,c=r>>>2|r<<30,b=r>>>13|r<<19,d=r>>>22|r<<10,m=c^b^d,c=w>>>6|w<<26,b=w>>>11|w<<21,d=w>>>25|w<<7,b=c^b^d,c=r&n^r&p^n&p,d=w&t^~w&u,b=v+b+d+F[h+1]+y[h+1]<<0,m=m+c<<0,v=q+b<<0,q=b+m<<0,c=q>>>2|q<<30,b=q>>>13|q<<19,d=q>>>22|q<<10,m=c^b^d,c=v>>>6|v<<26,b=v>>>11|v<<21,d=v>>>25|v<<7,b=c^b^d,c=q&r^q&n^r&n,d=v&w^~v&t,b=u+b+d+F[h+2]+
+y[h+2]<<0,m=m+c<<0,u=p+b<<0,p=b+m<<0,c=p>>>2|p<<30,b=p>>>13|p<<19,d=p>>>22|p<<10,m=c^b^d,c=u>>>6|u<<26,b=u>>>11|u<<21,d=u>>>25|u<<7,b=c^b^d,c=p&q^p&r^q&r,d=u&v^~u&w,b=t+b+d+F[h+3]+y[h+3]<<0,m=m+c<<0,t=n+b<<0,n=b+m<<0;g=g+n<<0;f=f+p<<0;l=l+q<<0;a=a+r<<0;B=B+t<<0;C=C+u<<0;D=D+v<<0;e=e+w<<0}k=A(g)+A(f)+A(l)+A(a)+A(B)+A(C)+A(D);x&&(k+=A(e));return k},A=function(e){for(var x="",f=0;4>f;f++)var k=3-f<<3,x=x+(G[e>>k+4&15]+G[e>>k&15]);return x};"undefined"!=typeof module?(z.sha256=z,z.sha224=I,module.exports=
+z):E&&(E.sha256=z,E.sha224=I)})(this);

package.json

@@ -1,6 +1,6 @@
 {
   "name": "js-sha256",
-  "version": "0.1.2",
+  "version": "0.1.4",
   "description": "A simple SHA-256 / SHA-224 hash function for JavaScript supports UTF-8 encoding.",
   "main": "src/sha256.js",
   "devDependencies": {

src/sha256.js

@@ -1,5 +1,5 @@
 /*
- * js-sha256 v0.1.2
+ * js-sha256 v0.1.4
  * https://github.com/emn178/js-sha256
  *
  * Copyright 2014-2015, emn178@gmail.com
@@ -10,7 +10,16 @@
 ;(function(root, undefined) {
   'use strict';
 
+  var NODE_JS = typeof(module) != 'undefined';
+  if(NODE_JS) {
+    root = global;
+    if(root.JS_SHA256_TEST) {
+      root.navigator = { userAgent: 'Firefox'};
+    }
+  }
+  var FIREFOX = (root.JS_SHA256_TEST || !NODE_JS) && navigator.userAgent.indexOf('Firefox') != -1;
   var HEX_CHARS = '0123456789abcdef'.split('');
+  var SHIFT = [24, 16, 8, 0];
 
   var K =[0x428a2f98, 0x71374491, 0xb5c0fbcf, 0xe9b5dba5, 0x3956c25b, 0x59f111f1, 0x923f82a4, 0xab1c5ed5,
           0xd807aa98, 0x12835b01, 0x243185be, 0x550c7dc3, 0x72be5d74, 0x80deb1fe, 0x9bdc06a7, 0xc19bf174,
@@ -30,15 +39,11 @@
   };
 
   var sha2 = function(message, is256, asciiOnly) {
-    if(is256 === undefined) {
+    var chunks, h0, h1, h2, h3, h4, h5, h6, h7;
-      is256 = true;
-    }
-
-    var blocks, h0, h1, h2, h3, h4, h5, h6, h7;
     if(!asciiOnly && /[^\x00-\x7F]/.test(message)) {
-      blocks = getBlocksFromUtf8(message);
+      chunks = getChunksFromUtf8(message);
     } else {
-      blocks = getBlocksFromAscii(message);
+      chunks = getChunksFromAscii(message);
     }
     if(is256) {
       h0 = 0x6a09e667;
@@ -60,71 +65,130 @@
       h7 = 0xbefa4fa4;
     }
 
-    for(var i = 0, length = blocks.length;i < length;i += 16) {
+    for(var i = 0, length = chunks.length;i < length;++i) {
-      var w = [], s0, s1, j;
+      var w = chunks[i], s0, s1, j, tmp1, tmp2, tmp3, maj, t1, t2, ch, ab, da, cd, bc,
-      for(j = 0;j < 16;++j) {
+          a = h0, b = h1, c = h2, d = h3, e = h4, f = h5, g = h6, h = h7;
-        w[j] = blocks[i + j];
+
-      }
       for(j = 16;j < 64;++j) {
-        s0 = rightrotate(w[j - 15], 7) ^ rightrotate(w[j - 15], 18) ^ (w[j - 15] >>> 3);
+        // rightrotate
-        s1 = rightrotate(w[j - 2], 17) ^ rightrotate(w[j - 2], 19) ^ (w[j - 2] >>> 10);
+        tmp1 = tmp2 = w[j - 15];
-        w[j] = w[j - 16] + s0 + w[j - 7] + s1;
+        tmp1 = (tmp1 >>> 7) | (tmp1 << 25);
+        tmp2 = (tmp2 >>> 18) | (tmp2 << 14);
+        s0 = tmp1 ^ tmp2 ^ (w[j - 15] >>> 3);
+        tmp1 = tmp2 = w[j - 2];
+        tmp1 = (tmp1 >>> 17) | (tmp1 << 15);
+        tmp2 = (tmp2 >>> 19) | (tmp2 << 13);
+        s1 = tmp1 ^ tmp2 ^ (w[j - 2] >>> 10);
+        w[j] = w[j - 16] + s0 + w[j - 7] + s1 << 0;
       }
 
-      var a = h0;
+      bc = b & c;
-      var b = h1;
+      for(j = 0;j < 64;j += 4) {
-      var c = h2;
+        tmp1 = (a >>> 2) | (a << 30);
-      var d = h3;
+        tmp2 = (a >>> 13) | (a << 19);
-      var e = h4;
+        tmp3 = (a >>> 22) | (a << 10);
-      var f = h5;
+        s0 = tmp1 ^ tmp2 ^ tmp3;
-      var g = h6;
+        tmp1 = (e >>> 6) | (e << 26);
-      var h = h7;
+        tmp2 = (e >>> 11) | (e << 21);
-      var maj, t1, t2, ch;
+        tmp3 = (e >>> 25) | (e << 7);
-
+        s1 = tmp1 ^ tmp2 ^ tmp3;
-      for(j = 0;j < 64;++j) {
+        ab = a & b;
-        s0 = rightrotate(a, 2) ^ rightrotate(a, 13) ^ rightrotate(a, 22);
+        maj = ab ^ (a & c) ^ bc;
-        maj = (a & b) ^ (a & c) ^ (b & c);
+        ch = (e & f) ^ (~e & g);
-        t2 = s0 + maj;
+        t1 = h + s1 + ch + K[j] + w[j] << 0;
-        s1 = rightrotate(e, 6) ^ rightrotate(e, 11) ^ rightrotate(e, 25);
+        t2 = s0 + maj << 0;
-        ch = (e & f) ^ ((~ e) & g);
+        h = d + t1 << 0;
-        t1 = (h + s1 + ch + K[j] + w[j]) & 0xffffffff;
+        d = t1 + t2 << 0;
-
+        tmp1 = (d >>> 2) | (d << 30);
-        h = g;
+        tmp2 = (d >>> 13) | (d << 19);
-        g = f;
+        tmp3 = (d >>> 22) | (d << 10);
-        f = e;
+        s0 = tmp1 ^ tmp2 ^ tmp3;
-        e = d + t1;
+        tmp1 = (h >>> 6) | (h << 26);
-        d = c;
+        tmp2 = (h >>> 11) | (h << 21);
-        c = b;
+        tmp3 = (h >>> 25) | (h << 7);
-        b = a;
+        s1 = tmp1 ^ tmp2 ^ tmp3;
-        a = t1 + t2;
+        da = d & a;
+        maj = da ^ (d & b) ^ ab;
+        ch = (h & e) ^ (~h & f);
+        t1 = g + s1 + ch + K[j + 1] + w[j + 1] << 0;
+        t2 = s0 + maj << 0;
+        g = c + t1 << 0;
+        c = t1 + t2 << 0;
+        tmp1 = (c >>> 2) | (c << 30);
+        tmp2 = (c >>> 13) | (c << 19);
+        tmp3 = (c >>> 22) | (c << 10);
+        s0 = tmp1 ^ tmp2 ^ tmp3;
+        tmp1 = (g >>> 6) | (g << 26);
+        tmp2 = (g >>> 11) | (g << 21);
+        tmp3 = (g >>> 25) | (g << 7);
+        s1 = tmp1 ^ tmp2 ^ tmp3;
+        cd = c & d;
+        maj = cd ^ (c & a) ^ da;
+        ch = (g & h) ^ (~g & e);
+        t1 = f + s1 + ch + K[j + 2] + w[j + 2] << 0;
+        t2 = s0 + maj << 0;
+        f = b + t1 << 0;
+        b = t1 + t2 << 0;
+        tmp1 = (b >>> 2) | (b << 30);
+        tmp2 = (b >>> 13) | (b << 19);
+        tmp3 = (b >>> 22) | (b << 10);
+        s0 = tmp1 ^ tmp2 ^ tmp3;
+        tmp1 = (f >>> 6) | (f << 26);
+        tmp2 = (f >>> 11) | (f << 21);
+        tmp3 = (f >>> 25) | (f << 7);
+        s1 = tmp1 ^ tmp2 ^ tmp3;
+        bc = b & c;
+        maj = bc ^ (b & d) ^ cd;
+        ch = (f & g) ^ (~f & h);
+        t1 = e + s1 + ch + K[j + 3] + w[j + 3] << 0;
+        t2 = s0 + maj << 0;
+        e = a + t1 << 0;
+        a = t1 + t2 << 0;
       }
 
-      h0 += a;
+      h0 = h0 + a << 0;
-      h1 += b;
+      h1 = h1 + b << 0;
-      h2 += c;
+      h2 = h2 + c << 0;
-      h3 += d;
+      h3 = h3 + d << 0;
-      h4 += e;
+      h4 = h4 + e << 0;
-      h5 += f;
+      h5 = h5 + f << 0;
-      h6 += g;
+      h6 = h6 + g << 0;
-      h7 += h;
+      h7 = h7 + h << 0;
     }
 
-    var hex = toHexString(h0) + toHexString(h1)+ toHexString(h2) + toHexString(h3) + toHexString(h4) + toHexString(h5) + toHexString(h6);
+    var hex = HEX_CHARS[(h0 >> 28) & 0x0F] + HEX_CHARS[(h0 >> 24) & 0x0F] +
+              HEX_CHARS[(h0 >> 20) & 0x0F] + HEX_CHARS[(h0 >> 16) & 0x0F] +
+              HEX_CHARS[(h0 >> 12) & 0x0F] + HEX_CHARS[(h0 >> 8) & 0x0F] +
+              HEX_CHARS[(h0 >> 4) & 0x0F] + HEX_CHARS[h0 & 0x0F] +
+              HEX_CHARS[(h1 >> 28) & 0x0F] + HEX_CHARS[(h1 >> 24) & 0x0F] +
+              HEX_CHARS[(h1 >> 20) & 0x0F] + HEX_CHARS[(h1 >> 16) & 0x0F] +
+              HEX_CHARS[(h1 >> 12) & 0x0F] + HEX_CHARS[(h1 >> 8) & 0x0F] +
+              HEX_CHARS[(h1 >> 4) & 0x0F] + HEX_CHARS[h1 & 0x0F] +
+              HEX_CHARS[(h2 >> 28) & 0x0F] + HEX_CHARS[(h2 >> 24) & 0x0F] +
+              HEX_CHARS[(h2 >> 20) & 0x0F] + HEX_CHARS[(h2 >> 16) & 0x0F] +
+              HEX_CHARS[(h2 >> 12) & 0x0F] + HEX_CHARS[(h2 >> 8) & 0x0F] +
+              HEX_CHARS[(h2 >> 4) & 0x0F] + HEX_CHARS[h2 & 0x0F] +
+              HEX_CHARS[(h3 >> 28) & 0x0F] + HEX_CHARS[(h3 >> 24) & 0x0F] +
+              HEX_CHARS[(h3 >> 20) & 0x0F] + HEX_CHARS[(h3 >> 16) & 0x0F] +
+              HEX_CHARS[(h3 >> 12) & 0x0F] + HEX_CHARS[(h3 >> 8) & 0x0F] +
+              HEX_CHARS[(h3 >> 4) & 0x0F] + HEX_CHARS[h3 & 0x0F] +
+              HEX_CHARS[(h4 >> 28) & 0x0F] + HEX_CHARS[(h4 >> 24) & 0x0F] +
+              HEX_CHARS[(h4 >> 20) & 0x0F] + HEX_CHARS[(h4 >> 16) & 0x0F] +
+              HEX_CHARS[(h4 >> 12) & 0x0F] + HEX_CHARS[(h4 >> 8) & 0x0F] +
+              HEX_CHARS[(h4 >> 4) & 0x0F] + HEX_CHARS[h4 & 0x0F] +
+              HEX_CHARS[(h5 >> 28) & 0x0F] + HEX_CHARS[(h5 >> 24) & 0x0F] +
+              HEX_CHARS[(h5 >> 20) & 0x0F] + HEX_CHARS[(h5 >> 16) & 0x0F] +
+              HEX_CHARS[(h5 >> 12) & 0x0F] + HEX_CHARS[(h5 >> 8) & 0x0F] +
+              HEX_CHARS[(h5 >> 4) & 0x0F] + HEX_CHARS[h5 & 0x0F] +
+              HEX_CHARS[(h6 >> 28) & 0x0F] + HEX_CHARS[(h6 >> 24) & 0x0F] +
+              HEX_CHARS[(h6 >> 20) & 0x0F] + HEX_CHARS[(h6 >> 16) & 0x0F] +
+              HEX_CHARS[(h6 >> 12) & 0x0F] + HEX_CHARS[(h6 >> 8) & 0x0F] +
+              HEX_CHARS[(h6 >> 4) & 0x0F] + HEX_CHARS[h6 & 0x0F];
     if(is256) {
-      hex += toHexString(h7);
+      hex += HEX_CHARS[(h7 >> 28) & 0x0F] + HEX_CHARS[(h7 >> 24) & 0x0F] +
-    }
+             HEX_CHARS[(h7 >> 20) & 0x0F] + HEX_CHARS[(h7 >> 16) & 0x0F] +
-    return hex;
+             HEX_CHARS[(h7 >> 12) & 0x0F] + HEX_CHARS[(h7 >> 8) & 0x0F] +
-  };
+             HEX_CHARS[(h7 >> 4) & 0x0F] + HEX_CHARS[h7 & 0x0F];
-
-  var rightrotate = function(x, c) {
-    return (x >>> c) | (x << (32 - c));
-  };
-
-  var toHexString = function(num) {
-    var hex = '';
-    for(var i = 0; i < 4; i++) {
-      var offset = 3 - i << 3;
-      hex += HEX_CHARS[(num >> (offset + 4)) & 0x0F] + HEX_CHARS[(num >> offset) & 0x0F];
     }
     return hex;
   };
@@ -153,41 +217,42 @@
     return bytes;
   };
 
-  var getBlocksFromAscii = function(message) {
+  var getChunksFromAscii = function(message) {
     // a block is 32 bits(4 bytes), a chunk is 512 bits(64 bytes)
     var length = message.length;
     var chunkCount = ((length + 8) >> 6) + 1;
-    var blockCount = chunkCount << 4; // chunkCount * 16
+    var chunks = [], blocks, i;
-    var blocks = [], i;
+    for(i = 0;i < chunkCount;++i) {
-    for(i = 0;i < blockCount;++i) {
+      chunks[i] = blocks = [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0];
-      blocks[i] = 0;
     }
     for(i = 0;i < length;++i) {
-      blocks[i >> 2] |= message.charCodeAt(i) << (3 - (i & 3) << 3);
+      blocks = chunks[i >> 6];
+      blocks[(i & 63) >> 2] |= message.charCodeAt(i) << SHIFT[i & 3];
     }
-    blocks[i >> 2] |= 0x80 << (3 - (i & 3) << 3);
+    blocks[(i & 63) >> 2] |= 0x80 << SHIFT[i & 3];
-    blocks[blockCount - 1] = length << 3; // length * 8
+    blocks[15] = length << 3; // length * 8
-    return blocks;
+    return chunks;
   };
 
-  var getBlocksFromUtf8 = function(message) {
+  var getChunksFromUtf8 = function(message) {
+    // a block is 32 bits(4 bytes), a chunk is 512 bits(64 bytes)
     var bytes = getBytesFromUtf8(message);
     var length = bytes.length;
     var chunkCount = ((length + 8) >> 6) + 1;
-    var blockCount = chunkCount << 4; // chunkCount * 16
+    var chunks = [], blocks, i;
-    var blocks = [], i;
+    for(i = 0;i < chunkCount;++i) {
-    for(i = 0;i < blockCount;++i) {
+      chunks[i] = blocks = [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0];
-      blocks[i] = 0;
     }
     for(i = 0;i < length;++i) {
-      blocks[i >> 2] |= bytes[i] << (3 - (i & 3) << 3);
+      blocks = chunks[i >> 6];
+      blocks[(i & 63) >> 2] |= bytes[i] << SHIFT[i & 3];
     }
-    blocks[i >> 2] |= 0x80 << (3 - (i & 3) << 3);
+    blocks[(i & 63) >> 2] |= 0x80 << SHIFT[i & 3];
-    blocks[blockCount - 1] = length << 3; // length * 8
+    blocks[15] = length << 3; // length * 8
-    return blocks;
+    return chunks;
   };
 
-  if(typeof(module) != 'undefined') {
+  if(!root.JS_SHA256_TEST && NODE_JS) {
     sha256.sha256 = sha256;
     sha256.sha224 = sha224;
     module.exports = sha256;

tests/node-test.js

@@ -2,3 +2,13 @@ sha256 = require('../src/sha256.js').sha256;
 sha224 = require('../src/sha256.js').sha224;
 expect = require('expect.js');
 require('./test.js');
+
+delete require.cache[require.resolve('../src/sha256.js')]
+delete require.cache[require.resolve('./test.js')]
+sha256 = null;
+sha224 = null;
+
+JS_SHA256_TEST = true;
+testName = 'without ArrayBuffer';
+require('../src/sha256.js');
+require('./test.js');

tests/test.js

@@ -20,6 +20,7 @@ describe('sha256', function() {
       it('should be successful', function() {
         expect(sha256('中文')).to.be('72726d8818f693066ceb69afa364218b692e62ea92b385782363780f47529c21');
         expect(sha256('aécio')).to.be('53196d1acfce0c4b264e01e8018c989d571351f59e33f055f76ff15b4f0516c6');
+        expect(sha256('𠜎')).to.be('8d10a48685dbc34484696de7ea7434d80a54c1d60100530faccf697463ef19c9');
       });
     });
 
@@ -53,6 +54,7 @@ describe('sha224', function() {
       it('should be successful', function() {
         expect(sha224('中文')).to.be('dfbab71afdf54388af4d55f8bd3de8c9b15e0eb916bf9125f4a959d4');
         expect(sha224('aécio')).to.be('d12841cafd89c534924a839e62bf35a2b5f3717b7802eb19bd8d8e15');
+        expect(sha224('𠜎')).to.be('eaa0129b5509f5701db218fb7076b282e4409da52d06363aa3bdd63d');
       });
     });