UnknownObject/js-sha256
1
0
Fork 0
mirror of https://github.com/emn178/js-sha256.git synced 2026-08-12 20:32:16 +08:00
Code Issues Packages Projects Releases Wiki Activity

* Add bower package.

Browse Source 
* Fixed JSHint warnings.
* Add travis.
* Add coveralls.
This commit is contained in:
Chen Yi-Cyuan
2015-01-06 22:51:55 +08:00
parent 1581e8dce4
commit 47cff7a93b
13 changed files with 263 additions and 142 deletions
Download Patch File Download Diff File Expand all files Collapse all files
src/sha256.js
+91 -87
View File
@@ -1,22 +1,16 @@
/*
* js-sha256 v0.1.1
* js-sha256 v0.1.2
* https://github.com/emn178/js-sha256
*
* Copyright 2014, emn178@gmail.com
* Copyright 2014-2015, emn178@gmail.com
*
* Licensed under the MIT license:
* http://www.opensource.org/licenses/MIT
*/
(function(root, undefined){
;(function(root, undefined) {
'use strict';
var HEX_CHARS = ['0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f'];
var HEX_TABLE = {
'0': 0, '1': 1, '2': 2, '3': 3, '4': 4, '5': 5, '6': 6, '7': 7, '8': 8, '9': 9,
'a': 10, 'b': 11, 'c': 12, 'd': 13, 'e': 14, 'f': 15,
'A': 10, 'B': 11, 'C': 12, 'D': 13, 'E': 14, 'F': 15
};
var HEX_CHARS = '0123456789abcdef'.split('');
var K =[0x428a2f98, 0x71374491, 0xb5c0fbcf, 0xe9b5dba5, 0x3956c25b, 0x59f111f1, 0x923f82a4, 0xab1c5ed5,
0xd807aa98, 0x12835b01, 0x243185be, 0x550c7dc3, 0x72be5d74, 0x80deb1fe, 0x9bdc06a7, 0xc19bf174,
@@ -27,49 +21,51 @@
0x19a4c116, 0x1e376c08, 0x2748774c, 0x34b0bcb5, 0x391c0cb3, 0x4ed8aa4a, 0x5b9cca4f, 0x682e6ff3,
0x748f82ee, 0x78a5636f, 0x84c87814, 0x8cc70208, 0x90befffa, 0xa4506ceb, 0xbef9a3f7, 0xc67178f2];
var sha256 = function(message) {
return sha2(message, true);
var sha256 = function(message, asciiOnly) {
return sha2(message, true, asciiOnly);
};
var sha224 = function(message) {
return sha2(message, false);
var sha224 = function(message, asciiOnly) {
return sha2(message, false, asciiOnly);
};
var sha2 = function(message, is256) {
if(is256 === undefined)
var sha2 = function(message, is256, asciiOnly) {
if(is256 === undefined) {
is256 = true;
var blocks = hasUTF8(message) ? UTF8toBlocks(message) : ASCIItoBlocks(message);
if(is256)
{
var h0 = 0x6a09e667;
var h1 = 0xbb67ae85;
var h2 = 0x3c6ef372;
var h3 = 0xa54ff53a;
var h4 = 0x510e527f;
var h5 = 0x9b05688c;
var h6 = 0x1f83d9ab;
var h7 = 0x5be0cd19;
}
else // 224
{
var h0 = 0xc1059ed8;
var h1 = 0x367cd507;
var h2 = 0x3070dd17;
var h3 = 0xf70e5939;
var h4 = 0xffc00b31;
var h5 = 0x68581511;
var h6 = 0x64f98fa7;
var h7 = 0xbefa4fa4;
}
for(var i = 0, length = blocks.length;i < length;i += 16)
{
var w = [], s0, s1;
for(var j = 0;j < 16;++j)
var blocks, h0, h1, h2, h3, h4, h5, h6, h7;
if(!asciiOnly && /[^\x00-\x7F]/.test(message)) {
blocks = getBlocksFromUtf8(message);
} else {
blocks = getBlocksFromAscii(message);
}
if(is256) {
h0 = 0x6a09e667;
h1 = 0xbb67ae85;
h2 = 0x3c6ef372;
h3 = 0xa54ff53a;
h4 = 0x510e527f;
h5 = 0x9b05688c;
h6 = 0x1f83d9ab;
h7 = 0x5be0cd19;
} else { // 224
h0 = 0xc1059ed8;
h1 = 0x367cd507;
h2 = 0x3070dd17;
h3 = 0xf70e5939;
h4 = 0xffc00b31;
h5 = 0x68581511;
h6 = 0x64f98fa7;
h7 = 0xbefa4fa4;
}
for(var i = 0, length = blocks.length;i < length;i += 16) {
var w = [], s0, s1, j;
for(j = 0;j < 16;++j) {
w[j] = blocks[i + j];
for(var j = 16;j < 64;++j)
{
}
for(j = 16;j < 64;++j) {
s0 = rightrotate(w[j - 15], 7) ^ rightrotate(w[j - 15], 18) ^ (w[j - 15] >>> 3);
s1 = rightrotate(w[j - 2], 17) ^ rightrotate(w[j - 2], 19) ^ (w[j - 2] >>> 10);
w[j] = w[j - 16] + s0 + w[j - 7] + s1;
@@ -85,8 +81,7 @@
var h = h7;
var maj, t1, t2, ch;
for(var j = 0;j < 64;++j)
{
for(j = 0;j < 64;++j) {
s0 = rightrotate(a, 2) ^ rightrotate(a, 13) ^ rightrotate(a, 22);
maj = (a & b) ^ (a & c) ^ (b & c);
t2 = s0 + maj;
@@ -115,8 +110,9 @@
}
var hex = toHexString(h0) + toHexString(h1)+ toHexString(h2) + toHexString(h3) + toHexString(h4) + toHexString(h5) + toHexString(h6);
if(is256)
if(is256) {
hex += toHexString(h7);
}
return hex;
};
@@ -125,69 +121,77 @@
};
var toHexString = function(num) {
var hex = "";
for(var i = 0; i < 4; i++)
{
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;
};
var hasUTF8 = function(message) {
var i = message.length;
while(i--)
if(message.charCodeAt(i) > 127)
return true;
return false;
var getBytesFromUtf8 = function(str) {
var bytes = [], index = 0;
for (var i = 0;i < str.length; i++) {
var c = str.charCodeAt(i);
if (c < 0x80) {
bytes[index++] = c;
} else if (c < 0x800) {
bytes[index++] = 0xc0 | (c >> 6);
bytes[index++] = 0x80 | (c & 0x3f);
} else if (c < 0xd800 || c >= 0xe000) {
bytes[index++] = 0xe0 | (c >> 12);
bytes[index++] = 0x80 | ((c >> 6) & 0x3f);
bytes[index++] = 0x80 | (c & 0x3f);
} else {
c = 0x10000 + (((c & 0x3ff) << 10) | (str.charCodeAt(++i) & 0x3ff));
bytes[index++] = 0xf0 | (c >> 18);
bytes[index++] = 0x80 | ((c >> 12) & 0x3f);
bytes[index++] = 0x80 | ((c >> 6) & 0x3f);
bytes[index++] = 0x80 | (c & 0x3f);
}
}
return bytes;
};
var ASCIItoBlocks = function(message) {
var getBlocksFromAscii = 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 blocks = [];
var i;
for(i = 0;i < blockCount;++i)
var blocks = [], i;
for(i = 0;i < blockCount;++i) {
blocks[i] = 0;
for(i = 0;i < length;++i)
blocks[i >> 2] |= message.charCodeAt(i) << (3 - (i % 4) << 3);
blocks[i >> 2] |= 0x80 << (3 - (i % 4) << 3);
}
for(i = 0;i < length;++i) {
blocks[i >> 2] |= message.charCodeAt(i) << (3 - (i & 3) << 3);
}
blocks[i >> 2] |= 0x80 << (3 - (i & 3) << 3);
blocks[blockCount - 1] = length << 3; // length * 8
return blocks;
};
var UTF8toBlocks = function(message) {
var uri = encodeURIComponent(message);
var blocks = [];
for(var i = 0, bytes = 0, length = uri.length;i < length;++i)
{
var c = uri.charCodeAt(i);
if(c == 37) // %
blocks[bytes >> 2] |= ((HEX_TABLE[uri.charAt(++i)] << 4) | HEX_TABLE[uri.charAt(++i)]) << (3 - (bytes % 4) << 3);
else
blocks[bytes >> 2] |= c << (3 - (bytes % 4) << 3);
++bytes;
}
var chunkCount = ((bytes + 8) >> 6) + 1;
var getBlocksFromUtf8 = function(message) {
var bytes = getBytesFromUtf8(message);
var length = bytes.length;
var chunkCount = ((length + 8) >> 6) + 1;
var blockCount = chunkCount << 4; // chunkCount * 16
var index = bytes >> 2;
blocks[index] |= 0x80 << (3 - (bytes % 4) << 3);
for(var i = index + 1;i < blockCount;++i)
var blocks = [], i;
for(i = 0;i < blockCount;++i) {
blocks[i] = 0;
blocks[blockCount - 1] = bytes << 3; // bytes * 8
}
for(i = 0;i < length;++i) {
blocks[i >> 2] |= bytes[i] << (3 - (i & 3) << 3);
}
blocks[i >> 2] |= 0x80 << (3 - (i & 3) << 3);
blocks[blockCount - 1] = length << 3; // length * 8
return blocks;
};
if(typeof(module) != 'undefined')
{
if(typeof(module) != 'undefined') {
sha256.sha256 = sha256;
sha256.sha224 = sha224;
module.exports = sha256;
}
else if(root)
{
} else if(root) {
root.sha256 = sha256;
root.sha224 = sha224;
}