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473 lines
18 KiB
HTML
473 lines
18 KiB
HTML
<!DOCTYPE html>
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<head>
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<!--
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Copyright (C) 2007 Apple Inc. All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions
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are met:
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1. Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
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EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR
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CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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-->
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<title>SunSpider crypto-aes</title>
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</head>
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<body>
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<h3>crypto-aes</h3>
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<div id="console">
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</div>
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<script>
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var _sunSpiderStartDate = new Date();
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/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
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/*
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* AES Cipher function: encrypt 'input' with Rijndael algorithm
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*
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* takes byte-array 'input' (16 bytes)
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* 2D byte-array key schedule 'w' (Nr+1 x Nb bytes)
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*
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* applies Nr rounds (10/12/14) using key schedule w for 'add round key' stage
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*
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* returns byte-array encrypted value (16 bytes)
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*/
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function Cipher(input, w) { // main Cipher function [§5.1]
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var Nb = 4; // block size (in words): no of columns in state (fixed at 4 for AES)
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var Nr = w.length/Nb - 1; // no of rounds: 10/12/14 for 128/192/256-bit keys
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var state = [[],[],[],[]]; // initialise 4xNb byte-array 'state' with input [§3.4]
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for (var i=0; i<4*Nb; i++) state[i%4][Math.floor(i/4)] = input[i];
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state = AddRoundKey(state, w, 0, Nb);
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for (var round=1; round<Nr; round++) {
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state = SubBytes(state, Nb);
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state = ShiftRows(state, Nb);
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state = MixColumns(state, Nb);
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state = AddRoundKey(state, w, round, Nb);
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}
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state = SubBytes(state, Nb);
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state = ShiftRows(state, Nb);
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state = AddRoundKey(state, w, Nr, Nb);
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var output = new Array(4*Nb); // convert state to 1-d array before returning [§3.4]
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for (var i=0; i<4*Nb; i++) output[i] = state[i%4][Math.floor(i/4)];
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return output;
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}
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function SubBytes(s, Nb) { // apply SBox to state S [§5.1.1]
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for (var r=0; r<4; r++) {
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for (var c=0; c<Nb; c++) s[r][c] = Sbox[s[r][c]];
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}
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return s;
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}
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function ShiftRows(s, Nb) { // shift row r of state S left by r bytes [§5.1.2]
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var t = new Array(4);
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for (var r=1; r<4; r++) {
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for (var c=0; c<4; c++) t[c] = s[r][(c+r)%Nb]; // shift into temp copy
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for (var c=0; c<4; c++) s[r][c] = t[c]; // and copy back
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} // note that this will work for Nb=4,5,6, but not 7,8 (always 4 for AES):
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return s; // see fp.gladman.plus.com/cryptography_technology/rijndael/aes.spec.311.pdf
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}
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function MixColumns(s, Nb) { // combine bytes of each col of state S [§5.1.3]
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for (var c=0; c<4; c++) {
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var a = new Array(4); // 'a' is a copy of the current column from 's'
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var b = new Array(4); // 'b' is a•{02} in GF(2^8)
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for (var i=0; i<4; i++) {
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a[i] = s[i][c];
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b[i] = s[i][c]&0x80 ? s[i][c]<<1 ^ 0x011b : s[i][c]<<1;
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}
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// a[n] ^ b[n] is a•{03} in GF(2^8)
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s[0][c] = b[0] ^ a[1] ^ b[1] ^ a[2] ^ a[3]; // 2*a0 + 3*a1 + a2 + a3
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s[1][c] = a[0] ^ b[1] ^ a[2] ^ b[2] ^ a[3]; // a0 * 2*a1 + 3*a2 + a3
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s[2][c] = a[0] ^ a[1] ^ b[2] ^ a[3] ^ b[3]; // a0 + a1 + 2*a2 + 3*a3
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s[3][c] = a[0] ^ b[0] ^ a[1] ^ a[2] ^ b[3]; // 3*a0 + a1 + a2 + 2*a3
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}
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return s;
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}
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function AddRoundKey(state, w, rnd, Nb) { // xor Round Key into state S [§5.1.4]
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for (var r=0; r<4; r++) {
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for (var c=0; c<Nb; c++) state[r][c] ^= w[rnd*4+c][r];
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}
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return state;
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}
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function KeyExpansion(key) { // generate Key Schedule (byte-array Nr+1 x Nb) from Key [§5.2]
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var Nb = 4; // block size (in words): no of columns in state (fixed at 4 for AES)
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var Nk = key.length/4 // key length (in words): 4/6/8 for 128/192/256-bit keys
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var Nr = Nk + 6; // no of rounds: 10/12/14 for 128/192/256-bit keys
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var w = new Array(Nb*(Nr+1));
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var temp = new Array(4);
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for (var i=0; i<Nk; i++) {
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var r = [key[4*i], key[4*i+1], key[4*i+2], key[4*i+3]];
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w[i] = r;
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}
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for (var i=Nk; i<(Nb*(Nr+1)); i++) {
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w[i] = new Array(4);
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for (var t=0; t<4; t++) temp[t] = w[i-1][t];
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if (i % Nk == 0) {
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temp = SubWord(RotWord(temp));
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for (var t=0; t<4; t++) temp[t] ^= Rcon[i/Nk][t];
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} else if (Nk > 6 && i%Nk == 4) {
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temp = SubWord(temp);
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}
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for (var t=0; t<4; t++) w[i][t] = w[i-Nk][t] ^ temp[t];
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}
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return w;
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}
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function SubWord(w) { // apply SBox to 4-byte word w
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for (var i=0; i<4; i++) w[i] = Sbox[w[i]];
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return w;
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}
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function RotWord(w) { // rotate 4-byte word w left by one byte
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w[4] = w[0];
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for (var i=0; i<4; i++) w[i] = w[i+1];
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return w;
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}
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// Sbox is pre-computed multiplicative inverse in GF(2^8) used in SubBytes and KeyExpansion [§5.1.1]
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var Sbox = [0x63,0x7c,0x77,0x7b,0xf2,0x6b,0x6f,0xc5,0x30,0x01,0x67,0x2b,0xfe,0xd7,0xab,0x76,
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0xca,0x82,0xc9,0x7d,0xfa,0x59,0x47,0xf0,0xad,0xd4,0xa2,0xaf,0x9c,0xa4,0x72,0xc0,
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0xb7,0xfd,0x93,0x26,0x36,0x3f,0xf7,0xcc,0x34,0xa5,0xe5,0xf1,0x71,0xd8,0x31,0x15,
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0x04,0xc7,0x23,0xc3,0x18,0x96,0x05,0x9a,0x07,0x12,0x80,0xe2,0xeb,0x27,0xb2,0x75,
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0x09,0x83,0x2c,0x1a,0x1b,0x6e,0x5a,0xa0,0x52,0x3b,0xd6,0xb3,0x29,0xe3,0x2f,0x84,
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0x53,0xd1,0x00,0xed,0x20,0xfc,0xb1,0x5b,0x6a,0xcb,0xbe,0x39,0x4a,0x4c,0x58,0xcf,
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0xd0,0xef,0xaa,0xfb,0x43,0x4d,0x33,0x85,0x45,0xf9,0x02,0x7f,0x50,0x3c,0x9f,0xa8,
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0x51,0xa3,0x40,0x8f,0x92,0x9d,0x38,0xf5,0xbc,0xb6,0xda,0x21,0x10,0xff,0xf3,0xd2,
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0xcd,0x0c,0x13,0xec,0x5f,0x97,0x44,0x17,0xc4,0xa7,0x7e,0x3d,0x64,0x5d,0x19,0x73,
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0x60,0x81,0x4f,0xdc,0x22,0x2a,0x90,0x88,0x46,0xee,0xb8,0x14,0xde,0x5e,0x0b,0xdb,
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0xe0,0x32,0x3a,0x0a,0x49,0x06,0x24,0x5c,0xc2,0xd3,0xac,0x62,0x91,0x95,0xe4,0x79,
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0xe7,0xc8,0x37,0x6d,0x8d,0xd5,0x4e,0xa9,0x6c,0x56,0xf4,0xea,0x65,0x7a,0xae,0x08,
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0xba,0x78,0x25,0x2e,0x1c,0xa6,0xb4,0xc6,0xe8,0xdd,0x74,0x1f,0x4b,0xbd,0x8b,0x8a,
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0x70,0x3e,0xb5,0x66,0x48,0x03,0xf6,0x0e,0x61,0x35,0x57,0xb9,0x86,0xc1,0x1d,0x9e,
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0xe1,0xf8,0x98,0x11,0x69,0xd9,0x8e,0x94,0x9b,0x1e,0x87,0xe9,0xce,0x55,0x28,0xdf,
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0x8c,0xa1,0x89,0x0d,0xbf,0xe6,0x42,0x68,0x41,0x99,0x2d,0x0f,0xb0,0x54,0xbb,0x16];
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// Rcon is Round Constant used for the Key Expansion [1st col is 2^(r-1) in GF(2^8)] [§5.2]
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var Rcon = [ [0x00, 0x00, 0x00, 0x00],
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[0x01, 0x00, 0x00, 0x00],
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[0x02, 0x00, 0x00, 0x00],
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[0x04, 0x00, 0x00, 0x00],
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[0x08, 0x00, 0x00, 0x00],
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[0x10, 0x00, 0x00, 0x00],
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[0x20, 0x00, 0x00, 0x00],
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[0x40, 0x00, 0x00, 0x00],
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[0x80, 0x00, 0x00, 0x00],
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[0x1b, 0x00, 0x00, 0x00],
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[0x36, 0x00, 0x00, 0x00] ];
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/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
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/*
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* Use AES to encrypt 'plaintext' with 'password' using 'nBits' key, in 'Counter' mode of operation
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* - see http://csrc.nist.gov/publications/nistpubs/800-38a/sp800-38a.pdf
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* for each block
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* - outputblock = cipher(counter, key)
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* - cipherblock = plaintext xor outputblock
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*/
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function AESEncryptCtr(plaintext, password, nBits) {
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if (!(nBits==128 || nBits==192 || nBits==256)) return ''; // standard allows 128/192/256 bit keys
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// for this example script, generate the key by applying Cipher to 1st 16/24/32 chars of password;
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// for real-world applications, a more secure approach would be to hash the password e.g. with SHA-1
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var nBytes = nBits/8; // no bytes in key
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var pwBytes = new Array(nBytes);
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for (var i=0; i<nBytes; i++) pwBytes[i] = password.charCodeAt(i) & 0xff;
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var key = Cipher(pwBytes, KeyExpansion(pwBytes));
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key = key.concat(key.slice(0, nBytes-16)); // key is now 16/24/32 bytes long
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// initialise counter block (NIST SP800-38A §B.2): millisecond time-stamp for nonce in 1st 8 bytes,
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// block counter in 2nd 8 bytes
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var blockSize = 16; // block size fixed at 16 bytes / 128 bits (Nb=4) for AES
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var counterBlock = new Array(blockSize); // block size fixed at 16 bytes / 128 bits (Nb=4) for AES
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var nonce = (new Date()).getTime(); // milliseconds since 1-Jan-1970
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// encode nonce in two stages to cater for JavaScript 32-bit limit on bitwise ops
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for (var i=0; i<4; i++) counterBlock[i] = (nonce >>> i*8) & 0xff;
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for (var i=0; i<4; i++) counterBlock[i+4] = (nonce/0x100000000 >>> i*8) & 0xff;
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// generate key schedule - an expansion of the key into distinct Key Rounds for each round
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var keySchedule = KeyExpansion(key);
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var blockCount = Math.ceil(plaintext.length/blockSize);
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var ciphertext = new Array(blockCount); // ciphertext as array of strings
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for (var b=0; b<blockCount; b++) {
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// set counter (block #) in last 8 bytes of counter block (leaving nonce in 1st 8 bytes)
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// again done in two stages for 32-bit ops
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for (var c=0; c<4; c++) counterBlock[15-c] = (b >>> c*8) & 0xff;
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for (var c=0; c<4; c++) counterBlock[15-c-4] = (b/0x100000000 >>> c*8)
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var cipherCntr = Cipher(counterBlock, keySchedule); // -- encrypt counter block --
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// calculate length of final block:
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var blockLength = b<blockCount-1 ? blockSize : (plaintext.length-1)%blockSize+1;
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var ct = '';
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for (var i=0; i<blockLength; i++) { // -- xor plaintext with ciphered counter byte-by-byte --
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var plaintextByte = plaintext.charCodeAt(b*blockSize+i);
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var cipherByte = plaintextByte ^ cipherCntr[i];
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ct += String.fromCharCode(cipherByte);
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}
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// ct is now ciphertext for this block
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ciphertext[b] = escCtrlChars(ct); // escape troublesome characters in ciphertext
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}
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// convert the nonce to a string to go on the front of the ciphertext
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var ctrTxt = '';
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for (var i=0; i<8; i++) ctrTxt += String.fromCharCode(counterBlock[i]);
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ctrTxt = escCtrlChars(ctrTxt);
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// use '-' to separate blocks, use Array.join to concatenate arrays of strings for efficiency
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return ctrTxt + '-' + ciphertext.join('-');
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}
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/*
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* Use AES to decrypt 'ciphertext' with 'password' using 'nBits' key, in Counter mode of operation
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*
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* for each block
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* - outputblock = cipher(counter, key)
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* - cipherblock = plaintext xor outputblock
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*/
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function AESDecryptCtr(ciphertext, password, nBits) {
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if (!(nBits==128 || nBits==192 || nBits==256)) return ''; // standard allows 128/192/256 bit keys
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var nBytes = nBits/8; // no bytes in key
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var pwBytes = new Array(nBytes);
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for (var i=0; i<nBytes; i++) pwBytes[i] = password.charCodeAt(i) & 0xff;
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var pwKeySchedule = KeyExpansion(pwBytes);
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var key = Cipher(pwBytes, pwKeySchedule);
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key = key.concat(key.slice(0, nBytes-16)); // key is now 16/24/32 bytes long
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var keySchedule = KeyExpansion(key);
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ciphertext = ciphertext.split('-'); // split ciphertext into array of block-length strings
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// recover nonce from 1st element of ciphertext
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var blockSize = 16; // block size fixed at 16 bytes / 128 bits (Nb=4) for AES
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var counterBlock = new Array(blockSize);
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var ctrTxt = unescCtrlChars(ciphertext[0]);
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for (var i=0; i<8; i++) counterBlock[i] = ctrTxt.charCodeAt(i);
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var plaintext = new Array(ciphertext.length-1);
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for (var b=1; b<ciphertext.length; b++) {
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// set counter (block #) in last 8 bytes of counter block (leaving nonce in 1st 8 bytes)
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for (var c=0; c<4; c++) counterBlock[15-c] = ((b-1) >>> c*8) & 0xff;
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for (var c=0; c<4; c++) counterBlock[15-c-4] = ((b/0x100000000-1) >>> c*8) & 0xff;
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var cipherCntr = Cipher(counterBlock, keySchedule); // encrypt counter block
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ciphertext[b] = unescCtrlChars(ciphertext[b]);
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var pt = '';
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for (var i=0; i<ciphertext[b].length; i++) {
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// -- xor plaintext with ciphered counter byte-by-byte --
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var ciphertextByte = ciphertext[b].charCodeAt(i);
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var plaintextByte = ciphertextByte ^ cipherCntr[i];
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pt += String.fromCharCode(plaintextByte);
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}
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// pt is now plaintext for this block
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plaintext[b-1] = pt; // b-1 'cos no initial nonce block in plaintext
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}
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return plaintext.join('');
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}
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/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
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function escCtrlChars(str) { // escape control chars which might cause problems handling ciphertext
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return str.replace(/[\0\t\n\v\f\r\xa0'"!-]/g, function(c) { return '!' + c.charCodeAt(0) + '!'; });
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} // \xa0 to cater for bug in Firefox; include '-' to leave it free for use as a block marker
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function unescCtrlChars(str) { // unescape potentially problematic control characters
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return str.replace(/!\d\d?\d?!/g, function(c) { return String.fromCharCode(c.slice(1,-1)); });
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}
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/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
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/*
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* if escCtrlChars()/unescCtrlChars() still gives problems, use encodeBase64()/decodeBase64() instead
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*/
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var b64 = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";
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function encodeBase64(str) { // http://tools.ietf.org/html/rfc4648
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var o1, o2, o3, h1, h2, h3, h4, bits, i=0, enc='';
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str = encodeUTF8(str); // encode multi-byte chars into UTF-8 for byte-array
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do { // pack three octets into four hexets
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o1 = str.charCodeAt(i++);
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o2 = str.charCodeAt(i++);
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o3 = str.charCodeAt(i++);
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bits = o1<<16 | o2<<8 | o3;
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h1 = bits>>18 & 0x3f;
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h2 = bits>>12 & 0x3f;
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h3 = bits>>6 & 0x3f;
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h4 = bits & 0x3f;
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// end of string? index to '=' in b64
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if (isNaN(o3)) h4 = 64;
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if (isNaN(o2)) h3 = 64;
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// use hexets to index into b64, and append result to encoded string
|
|
enc += b64.charAt(h1) + b64.charAt(h2) + b64.charAt(h3) + b64.charAt(h4);
|
|
} while (i < str.length);
|
|
|
|
return enc;
|
|
}
|
|
|
|
function decodeBase64(str) {
|
|
var o1, o2, o3, h1, h2, h3, h4, bits, i=0, enc='';
|
|
|
|
do { // unpack four hexets into three octets using index points in b64
|
|
h1 = b64.indexOf(str.charAt(i++));
|
|
h2 = b64.indexOf(str.charAt(i++));
|
|
h3 = b64.indexOf(str.charAt(i++));
|
|
h4 = b64.indexOf(str.charAt(i++));
|
|
|
|
bits = h1<<18 | h2<<12 | h3<<6 | h4;
|
|
|
|
o1 = bits>>16 & 0xff;
|
|
o2 = bits>>8 & 0xff;
|
|
o3 = bits & 0xff;
|
|
|
|
if (h3 == 64) enc += String.fromCharCode(o1);
|
|
else if (h4 == 64) enc += String.fromCharCode(o1, o2);
|
|
else enc += String.fromCharCode(o1, o2, o3);
|
|
} while (i < str.length);
|
|
|
|
return decodeUTF8(enc); // decode UTF-8 byte-array back to Unicode
|
|
}
|
|
|
|
function encodeUTF8(str) { // encode multi-byte string into utf-8 multiple single-byte characters
|
|
str = str.replace(
|
|
/[\u0080-\u07ff]/g, // U+0080 - U+07FF = 2-byte chars
|
|
function(c) {
|
|
var cc = c.charCodeAt(0);
|
|
return String.fromCharCode(0xc0 | cc>>6, 0x80 | cc&0x3f); }
|
|
);
|
|
str = str.replace(
|
|
/[\u0800-\uffff]/g, // U+0800 - U+FFFF = 3-byte chars
|
|
function(c) {
|
|
var cc = c.charCodeAt(0);
|
|
return String.fromCharCode(0xe0 | cc>>12, 0x80 | cc>>6&0x3F, 0x80 | cc&0x3f); }
|
|
);
|
|
return str;
|
|
}
|
|
|
|
function decodeUTF8(str) { // decode utf-8 encoded string back into multi-byte characters
|
|
str = str.replace(
|
|
/[\u00c0-\u00df][\u0080-\u00bf]/g, // 2-byte chars
|
|
function(c) {
|
|
var cc = (c.charCodeAt(0)&0x1f)<<6 | c.charCodeAt(1)&0x3f;
|
|
return String.fromCharCode(cc); }
|
|
);
|
|
str = str.replace(
|
|
/[\u00e0-\u00ef][\u0080-\u00bf][\u0080-\u00bf]/g, // 3-byte chars
|
|
function(c) {
|
|
var cc = (c.charCodeAt(0)&0x0f)<<12 | (c.charCodeAt(1)&0x3f<<6) | c.charCodeAt(2)&0x3f;
|
|
return String.fromCharCode(cc); }
|
|
);
|
|
return str;
|
|
}
|
|
|
|
|
|
function byteArrayToHexStr(b) { // convert byte array to hex string for displaying test vectors
|
|
var s = '';
|
|
for (var i=0; i<b.length; i++) s += b[i].toString(16) + ' ';
|
|
return s;
|
|
}
|
|
|
|
/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
|
|
|
|
|
|
var plainText = "ROMEO: But, soft! what light through yonder window breaks?\n\
|
|
It is the east, and Juliet is the sun.\n\
|
|
Arise, fair sun, and kill the envious moon,\n\
|
|
Who is already sick and pale with grief,\n\
|
|
That thou her maid art far more fair than she:\n\
|
|
Be not her maid, since she is envious;\n\
|
|
Her vestal livery is but sick and green\n\
|
|
And none but fools do wear it; cast it off.\n\
|
|
It is my lady, O, it is my love!\n\
|
|
O, that she knew she were!\n\
|
|
She speaks yet she says nothing: what of that?\n\
|
|
Her eye discourses; I will answer it.\n\
|
|
I am too bold, 'tis not to me she speaks:\n\
|
|
Two of the fairest stars in all the heaven,\n\
|
|
Having some business, do entreat her eyes\n\
|
|
To twinkle in their spheres till they return.\n\
|
|
What if her eyes were there, they in her head?\n\
|
|
The brightness of her cheek would shame those stars,\n\
|
|
As daylight doth a lamp; her eyes in heaven\n\
|
|
Would through the airy region stream so bright\n\
|
|
That birds would sing and think it were not night.\n\
|
|
See, how she leans her cheek upon her hand!\n\
|
|
O, that I were a glove upon that hand,\n\
|
|
That I might touch that cheek!\n\
|
|
JULIET: Ay me!\n\
|
|
ROMEO: She speaks:\n\
|
|
O, speak again, bright angel! for thou art\n\
|
|
As glorious to this night, being o'er my head\n\
|
|
As is a winged messenger of heaven\n\
|
|
Unto the white-upturned wondering eyes\n\
|
|
Of mortals that fall back to gaze on him\n\
|
|
When he bestrides the lazy-pacing clouds\n\
|
|
And sails upon the bosom of the air.";
|
|
|
|
var password = "O Romeo, Romeo! wherefore art thou Romeo?";
|
|
|
|
var cipherText = AESEncryptCtr(plainText, password, 256);
|
|
var decryptedText = AESDecryptCtr(cipherText, password, 256);
|
|
|
|
|
|
var _sunSpiderInterval = new Date() - _sunSpiderStartDate;
|
|
|
|
document.getElementById("console").innerHTML = _sunSpiderInterval;
|
|
</script>
|
|
|
|
|
|
</body>
|
|
</html>
|