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add shake algorithm

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Yi-Cyuan
2015-09-17 14:57:12 +08:00
parent 61300d2d34
commit 7423f9ef37
11 changed files with 160 additions and 139 deletions
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src/sha3.js
+54 -110
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@@ -17,8 +17,8 @@
root.navigator = { userAgent: 'Chrome'};
}
}
var CHROME = (root.JS_SHA3_TEST || !NODE_JS) && navigator.userAgent.indexOf('Chrome') != -1;
var HEX_CHARS = '0123456789abcdef'.split('');
var SHAKE_PADDING = [31, 7936, 2031616, 520093696];
var KECCAK_PADDING = [1, 256, 65536, 16777216];
var PADDING = [6, 1536, 393216, 100663296];
var SHIFT = [0, 8, 16, 24];
@@ -28,23 +28,34 @@
2147483648, 32770, 2147483648, 128, 2147483648, 32778, 0, 2147483658, 2147483648,
2147516545, 2147483648, 32896, 2147483648, 2147483649, 0, 2147516424, 2147483648];
var BITS = [224, 256, 384, 512];
var ALGORITHMS = [
{name: 'keccak', padding: KECCAK_PADDING},
{name: 'sha3', padding: PADDING}
];
var OUTPUT_TYPES = ['hex', 'buffer'];
var blocks = [], s = [], methods = {};
var SHAKE_BITS = [128, 256];
var OUTPUT_TYPES = ['hex', 'buffer', 'shake'];
var createMethod = function(bits, padding, outputType) {
return function(message) {
return keccak(message, bits, padding, outputType);
return keccak(message, bits, padding, bits, outputType);
}
};
for(var i = 0;i < ALGORITHMS.length;++i) {
var algorithm = ALGORITHMS[i];
for(var j = 0;j < BITS.length;++j) {
var createShakeMethod = function(bits, padding, outputType) {
return function(message, outputBits) {
return keccak(message, bits, padding, outputBits, outputType);
}
};
var algorithms = [
{name: 'keccak', padding: KECCAK_PADDING, bits: BITS, createMethod: createMethod},
{name: 'sha3', padding: PADDING, bits: BITS, createMethod: createMethod},
{name: 'shake', padding: SHAKE_PADDING, bits: SHAKE_BITS, createMethod: createShakeMethod}
];
var blocks = [], s = [], methods = {};
for(var i = 0;i < algorithms.length;++i) {
var algorithm = algorithms[i];
var bits = algorithm.bits;
var createMethod = algorithm.createMethod;
for(var j = 0;j < bits.length;++j) {
(function(algorithm, bits) {
var method = createMethod(bits, algorithm.padding, 'hex');
methods[algorithm.name +'_' + bits] = method;
@@ -52,11 +63,11 @@
var type = OUTPUT_TYPES[k];
method[type] = createMethod(bits, algorithm.padding, type);
}
})(algorithm, BITS[j]);
})(algorithm, bits[j]);
}
}
var keccak = function(message, bits, padding, outputType) {
var keccak = function(message, bits, padding, outputBits, outputType) {
var notString = typeof(message) != 'string';
if(notString && message.constructor == root.ArrayBuffer) {
message = new Uint8Array(message);
@@ -300,111 +311,44 @@
}
} while(!end);
var outputBlocks = parseInt(outputBits / 32);
var extraBytes = parseInt((outputBits % 32) / 8);
if(outputType == 'buffer') {
var length = bits / 32;
var buffer = new ArrayBuffer(bits / 8);
var bytes = outputBits / 8;
var buffer;
if(extraBytes) {
buffer = new ArrayBuffer((outputBlocks + 1) * 4);
} else {
buffer = new ArrayBuffer(bytes);
}
var array = new Uint32Array(buffer);
for(var i = 0;i < length;++i) {
for(i = 0;i < outputBlocks;++i) {
array[i] = s[i];
}
if(extraBytes) {
array[i] = s[i];
buffer = buffer.slice(0, bytes);
}
return buffer;
} else {
var hex = '';
if(CHROME) {
b0 = s[0];
b1 = s[1];
b2 = s[2];
b3 = s[3];
b4 = s[4];
b5 = s[5];
b6 = s[6];
b7 = s[7];
b8 = s[8];
b9 = s[9];
b10 = s[10];
b11 = s[11];
b12 = s[12];
b13 = s[13];
b14 = s[14];
b15 = s[15];
hex += HEX_CHARS[(b0 >> 4) & 0x0F] + HEX_CHARS[b0 & 0x0F] +
HEX_CHARS[(b0 >> 12) & 0x0F] + HEX_CHARS[(b0 >> 8) & 0x0F] +
HEX_CHARS[(b0 >> 20) & 0x0F] + HEX_CHARS[(b0 >> 16) & 0x0F] +
HEX_CHARS[(b0 >> 28) & 0x0F] + HEX_CHARS[(b0 >> 24) & 0x0F] +
HEX_CHARS[(b1 >> 4) & 0x0F] + HEX_CHARS[b1 & 0x0F] +
HEX_CHARS[(b1 >> 12) & 0x0F] + HEX_CHARS[(b1 >> 8) & 0x0F] +
HEX_CHARS[(b1 >> 20) & 0x0F] + HEX_CHARS[(b1 >> 16) & 0x0F] +
HEX_CHARS[(b1 >> 28) & 0x0F] + HEX_CHARS[(b1 >> 24) & 0x0F] +
HEX_CHARS[(b2 >> 4) & 0x0F] + HEX_CHARS[b2 & 0x0F] +
HEX_CHARS[(b2 >> 12) & 0x0F] + HEX_CHARS[(b2 >> 8) & 0x0F] +
HEX_CHARS[(b2 >> 20) & 0x0F] + HEX_CHARS[(b2 >> 16) & 0x0F] +
HEX_CHARS[(b2 >> 28) & 0x0F] + HEX_CHARS[(b2 >> 24) & 0x0F] +
HEX_CHARS[(b3 >> 4) & 0x0F] + HEX_CHARS[b3 & 0x0F] +
HEX_CHARS[(b3 >> 12) & 0x0F] + HEX_CHARS[(b3 >> 8) & 0x0F] +
HEX_CHARS[(b3 >> 20) & 0x0F] + HEX_CHARS[(b3 >> 16) & 0x0F] +
HEX_CHARS[(b3 >> 28) & 0x0F] + HEX_CHARS[(b3 >> 24) & 0x0F] +
HEX_CHARS[(b4 >> 4) & 0x0F] + HEX_CHARS[b4 & 0x0F] +
HEX_CHARS[(b4 >> 12) & 0x0F] + HEX_CHARS[(b4 >> 8) & 0x0F] +
HEX_CHARS[(b4 >> 20) & 0x0F] + HEX_CHARS[(b4 >> 16) & 0x0F] +
HEX_CHARS[(b4 >> 28) & 0x0F] + HEX_CHARS[(b4 >> 24) & 0x0F] +
HEX_CHARS[(b5 >> 4) & 0x0F] + HEX_CHARS[b5 & 0x0F] +
HEX_CHARS[(b5 >> 12) & 0x0F] + HEX_CHARS[(b5 >> 8) & 0x0F] +
HEX_CHARS[(b5 >> 20) & 0x0F] + HEX_CHARS[(b5 >> 16) & 0x0F] +
HEX_CHARS[(b5 >> 28) & 0x0F] + HEX_CHARS[(b5 >> 24) & 0x0F] +
HEX_CHARS[(b6 >> 4) & 0x0F] + HEX_CHARS[b6 & 0x0F] +
HEX_CHARS[(b6 >> 12) & 0x0F] + HEX_CHARS[(b6 >> 8) & 0x0F] +
HEX_CHARS[(b6 >> 20) & 0x0F] + HEX_CHARS[(b6 >> 16) & 0x0F] +
HEX_CHARS[(b6 >> 28) & 0x0F] + HEX_CHARS[(b6 >> 24) & 0x0F];
if(bits >= 256) {
hex += HEX_CHARS[(b7 >> 4) & 0x0F] + HEX_CHARS[b7 & 0x0F] +
HEX_CHARS[(b7 >> 12) & 0x0F] + HEX_CHARS[(b7 >> 8) & 0x0F] +
HEX_CHARS[(b7 >> 20) & 0x0F] + HEX_CHARS[(b7 >> 16) & 0x0F] +
HEX_CHARS[(b7 >> 28) & 0x0F] + HEX_CHARS[(b7 >> 24) & 0x0F];
for(i = 0;i < outputBlocks;++i) {
h = s[i];
hex += HEX_CHARS[(h >> 4) & 0x0F] + HEX_CHARS[h & 0x0F] +
HEX_CHARS[(h >> 12) & 0x0F] + HEX_CHARS[(h >> 8) & 0x0F] +
HEX_CHARS[(h >> 20) & 0x0F] + HEX_CHARS[(h >> 16) & 0x0F] +
HEX_CHARS[(h >> 28) & 0x0F] + HEX_CHARS[(h >> 24) & 0x0F];
}
if(extraBytes) {
h = s[i];
if(extraBytes > 0) {
hex += HEX_CHARS[(h >> 4) & 0x0F] + HEX_CHARS[h & 0x0F];
}
if(bits >= 384) {
hex += HEX_CHARS[(b8 >> 4) & 0x0F] + HEX_CHARS[b8 & 0x0F] +
HEX_CHARS[(b8 >> 12) & 0x0F] + HEX_CHARS[(b8 >> 8) & 0x0F] +
HEX_CHARS[(b8 >> 20) & 0x0F] + HEX_CHARS[(b8 >> 16) & 0x0F] +
HEX_CHARS[(b8 >> 28) & 0x0F] + HEX_CHARS[(b8 >> 24) & 0x0F] +
HEX_CHARS[(b9 >> 4) & 0x0F] + HEX_CHARS[b9 & 0x0F] +
HEX_CHARS[(b9 >> 12) & 0x0F] + HEX_CHARS[(b9 >> 8) & 0x0F] +
HEX_CHARS[(b9 >> 20) & 0x0F] + HEX_CHARS[(b9 >> 16) & 0x0F] +
HEX_CHARS[(b9 >> 28) & 0x0F] + HEX_CHARS[(b9 >> 24) & 0x0F] +
HEX_CHARS[(b10 >> 4) & 0x0F] + HEX_CHARS[b10 & 0x0F] +
HEX_CHARS[(b10 >> 12) & 0x0F] + HEX_CHARS[(b10 >> 8) & 0x0F] +
HEX_CHARS[(b10 >> 20) & 0x0F] + HEX_CHARS[(b10 >> 16) & 0x0F] +
HEX_CHARS[(b10 >> 28) & 0x0F] + HEX_CHARS[(b10 >> 24) & 0x0F] +
HEX_CHARS[(b11 >> 4) & 0x0F] + HEX_CHARS[b11 & 0x0F] +
HEX_CHARS[(b11 >> 12) & 0x0F] + HEX_CHARS[(b11 >> 8) & 0x0F] +
HEX_CHARS[(b11 >> 20) & 0x0F] + HEX_CHARS[(b11 >> 16) & 0x0F] +
HEX_CHARS[(b11 >> 28) & 0x0F] + HEX_CHARS[(b11 >> 24) & 0x0F];
if(extraBytes > 1) {
hex += HEX_CHARS[(h >> 12) & 0x0F] + HEX_CHARS[(h >> 8) & 0x0F];
}
if(bits == 512) {
hex += HEX_CHARS[(b12 >> 4) & 0x0F] + HEX_CHARS[b12 & 0x0F] +
HEX_CHARS[(b12 >> 12) & 0x0F] + HEX_CHARS[(b12 >> 8) & 0x0F] +
HEX_CHARS[(b12 >> 20) & 0x0F] + HEX_CHARS[(b12 >> 16) & 0x0F] +
HEX_CHARS[(b12 >> 28) & 0x0F] + HEX_CHARS[(b12 >> 24) & 0x0F] +
HEX_CHARS[(b13 >> 4) & 0x0F] + HEX_CHARS[b13 & 0x0F] +
HEX_CHARS[(b13 >> 12) & 0x0F] + HEX_CHARS[(b13 >> 8) & 0x0F] +
HEX_CHARS[(b13 >> 20) & 0x0F] + HEX_CHARS[(b13 >> 16) & 0x0F] +
HEX_CHARS[(b13 >> 28) & 0x0F] + HEX_CHARS[(b13 >> 24) & 0x0F] +
HEX_CHARS[(b14 >> 4) & 0x0F] + HEX_CHARS[b14 & 0x0F] +
HEX_CHARS[(b14 >> 12) & 0x0F] + HEX_CHARS[(b14 >> 8) & 0x0F] +
HEX_CHARS[(b14 >> 20) & 0x0F] + HEX_CHARS[(b14 >> 16) & 0x0F] +
HEX_CHARS[(b14 >> 28) & 0x0F] + HEX_CHARS[(b14 >> 24) & 0x0F] +
HEX_CHARS[(b15 >> 4) & 0x0F] + HEX_CHARS[b15 & 0x0F] +
HEX_CHARS[(b15 >> 12) & 0x0F] + HEX_CHARS[(b15 >> 8) & 0x0F] +
HEX_CHARS[(b15 >> 20) & 0x0F] + HEX_CHARS[(b15 >> 16) & 0x0F] +
HEX_CHARS[(b15 >> 28) & 0x0F] + HEX_CHARS[(b15 >> 24) & 0x0F];
}
} else {
for(i = 0, n = bits / 32;i < n;++i) {
h = s[i];
hex += HEX_CHARS[(h >> 4) & 0x0F] + HEX_CHARS[h & 0x0F] +
HEX_CHARS[(h >> 12) & 0x0F] + HEX_CHARS[(h >> 8) & 0x0F] +
HEX_CHARS[(h >> 20) & 0x0F] + HEX_CHARS[(h >> 16) & 0x0F] +
HEX_CHARS[(h >> 28) & 0x0F] + HEX_CHARS[(h >> 24) & 0x0F];
if(extraBytes > 2) {
hex += HEX_CHARS[(h >> 20) & 0x0F] + HEX_CHARS[(h >> 16) & 0x0F];
}
}
return hex;