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<!doctype html>
<html>
<head>
<title>Bitcoin Paper Wallet Generator</title>
<!--
generate-wallet.html (from https://bitcoinpaperwallet.com)
Contact: Canton Becker / canton@gmail.com / www.cantonbecker.com
generate-wallet.html is always distributed with a PGP signature "generate-wallet.html.sig" which you
can use to validate the integrity and authorship of this file like so:
gpg --recv-key 36E1D9B6
gpg --verify --with-fingerprint generate-wallet.html.sig generate-wallet.html
The bitcoinpaperwallet.com folding wallet design may not be used for commercial use
without permission. The design of the bitcoin hologram sticker used to seal these wallets
is copyrighted. As a courtesy, please do not modify this software in such a way that the
links to purchase hologram stickers and wallet making supplies are removed or pointed elsewhere.
This software (HTML and JavaScript) is ©Copyright 2014 Canton Becker and bitaddress.org
and licensed under the MIT license.
Special thanks to pointbiz/bitaddress.org, Artiom Chilaru/flexlabs.org, and Martin Ankerl
for significant contributions to this software.
****************************************************************************************
****************************************************************************************
* Contributions to support the bitcoinpaperwallet.com developers are extremely welcome.
* Donations are shared between Canton Becker, Artiom Chilaru (BIP38 implementation)
* Martin Ankerl (guilloche patterns), and 'pointbiz' (original bitaddress.org code)
* Bitcoin Donation Address: 1Pjg628vjMLBvADrPHsthtzKiryM2y46DG
* GitHub Repository: https://github.com/cantonbecker/bitcoinpaperwallet
****************************************************************************************
* The starting point for this code was the excellent single-file bitaddress.org project.
* Bitcoin Donation Address: 1NiNja1bUmhSoTXozBRBEtR8LeF9TGbZBN
* GitHub Repository: https://github.com/pointbiz/bitaddress.org
****************************************************************************************
****************************************************************************************
Portions of this code are copyrighted by their respective authors - see below.
Notice of Copyrights and Licenses:
***********************************
The bitaddress.org project, software and embedded resources are copyright bitaddress.org.
Portions of the all-in-one HTML document contain JavaScript codes that are the copyrights of others.
The individual copyrights are included throughout the document along with their licenses.
Included JavaScript libraries are separated with HTML script tags.
Summary of JavaScript functions with a redistributable license:
JavaScript function License
******************* ***************
Array.prototype.map Public Domain
window.Crypto BSD License
window.SecureRandom BSD License
window.EllipticCurve BSD License
window.BigInteger BSD License
window.QRCode MIT License
window.Bitcoin MIT License
window.Crypto_scrypt MIT License
ninja.(*) MIT License // from bitaddress.org
parser.setUA GPLv2 & MIT // Browser User Agent detection
jsqrcode Apache License, 2.0 // QR Code scanning from webcam
This HTML file and the graphics required to make it work are available under The MIT License (MIT)
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and
associated documentation files (the "Software"), to deal in the Software without restriction, including
without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject
to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial
portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT
LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
GitHub Repository: https://github.com/cantonbecker/bitcoinpaperwallet
-->
<meta charset="utf-8">
<script type="text/javascript">
// Basic initialization and switching for bitcoin vs. alternative cryptocurrencies
function setCryptoCurrency(toThis) {
window.currencyName = toThis;
switch (toThis)
{
case 'Bitcoin':
window.networkVersion = 0x00;
window.privateKeyPrefix = 0x80;
window.WIFPrefix = '5';
window.compressedWIFPrefix = '[LK]';
break;
case 'Litecoin':
window.networkVersion = 0x30;
window.privateKeyPrefix = 0xb0;
window.WIFPrefix = '6';
window.compressedWIFPrefix = 'T';
document.title = 'Litecoin paper wallet generator';
break;
case 'DASH':
window.networkVersion = 0x4c;
window.privateKeyPrefix = 0xcc
window.WIFPrefix = '7';
window.compressedWIFPrefix = 'X';
document.title = 'DASH paper wallet generator.';
break;
case 'Dogecoin':
window.networkVersion = 0x1e;
window.privateKeyPrefix = 0x9e;
window.WIFPrefix = '6';
window.compressedWIFPrefix = 'Q';
document.title = 'Dogecoin paper wallet generator. Wow! Many coin. Such shiny.';
break;
case 'Testnet':
window.networkVersion = 0x6F;
window.privateKeyPrefix = 0xEF;
window.WIFPrefix = '9';
window.compressedWIFPrefix = 'c';
document.title = 'Bitcoin TESTNET paper wallet generator';
break;
default:
alert ('Invalid cryptocurrency "' + toThis + '" at initialization. Defaulting to Bitcoin.');
setCryptoCurrency('Bitcoin');
} // eof switch
return (true);
}
function getParameterByName(name) {
name = name.replace(/[\[]/, "\\[").replace(/[\]]/, "\\]");
var regex = new RegExp("[\\?&]" + name + "=([^&#]*)"),
results = regex.exec(location.search);
return results == null ? "" : decodeURIComponent(results[1].replace(/\+/g, " "));
}
var myDesign = getParameterByName('design');
window.suppliesURL = 'https://bitcoinpaperwallet.com/?p=' + myDesign + '#purchase';
switch (myDesign) {
case 'alt-litecoin':
setCryptoCurrency('Litecoin');
break;
case 'alt-DASH':
setCryptoCurrency('DASH');
break;
case 'alt-dogecoin':
setCryptoCurrency('Dogecoin');
break;
case 'alt-testnet':
setCryptoCurrency('Testnet');
break;
default:
setCryptoCurrency('Bitcoin');
window.suppliesURL = 'https://bitcoinpaperwallet.com/#purchase'; // remove special currency flag
}
</script>
<script type="text/javascript">
// Array.prototype.map function is in the public domain.
// Production steps of ECMA-262, Edition 5, 15.4.4.19
// Reference: http://es5.github.com/#x15.4.4.19
if (!Array.prototype.map) {
Array.prototype.map = function (callback, thisArg) {
var T, A, k;
if (this == null) {
throw new TypeError(" this is null or not defined");
}
// 1. Let O be the result of calling ToObject passing the |this| value as the argument.
var O = Object(this);
// 2. Let lenValue be the result of calling the Get internal method of O with the argument "length".
// 3. Let len be ToUint32(lenValue).
var len = O.length >>> 0;
// 4. If IsCallable(callback) is false, throw a TypeError exception.
// See: http://es5.github.com/#x9.11
if ({}.toString.call(callback) != "[object Function]") {
throw new TypeError(callback + " is not a function");
}
// 5. If thisArg was supplied, let T be thisArg; else let T be undefined.
if (thisArg) {
T = thisArg;
}
// 6. Let A be a new array created as if by the expression new Array(len) where Array is
// the standard built-in constructor with that name and len is the value of len.
A = new Array(len);
// 7. Let k be 0
k = 0;
// 8. Repeat, while k < len
while (k < len) {
var kValue, mappedValue;
// a. Let Pk be ToString(k).
// This is implicit for LHS operands of the in operator
// b. Let kPresent be the result of calling the HasProperty internal method of O with argument Pk.
// This step can be combined with c
// c. If kPresent is true, then
if (k in O) {
// i. Let kValue be the result of calling the Get internal method of O with argument Pk.
kValue = O[k];
// ii. Let mappedValue be the result of calling the Call internal method of callback
// with T as the this value and argument list containing kValue, k, and O.
mappedValue = callback.call(T, kValue, k, O);
// iii. Call the DefineOwnProperty internal method of A with arguments
// Pk, Property Descriptor {Value: mappedValue, Writable: true, Enumerable: true, Configurable: true},
// and false.
// In browsers that support Object.defineProperty, use the following:
// Object.defineProperty(A, Pk, { value: mappedValue, writable: true, enumerable: true, configurable: true });
// For best browser support, use the following:
A[k] = mappedValue;
}
// d. Increase k by 1.
k++;
}
// 9. return A
return A;
};
}
</script>
<script type="text/javascript">
/*!
* Crypto-JS v2.5.4 Crypto.js
* http://code.google.com/p/crypto-js/
* Copyright (c) 2009-2013, Jeff Mott. All rights reserved.
* http://code.google.com/p/crypto-js/wiki/License
*/
if (typeof Crypto == "undefined" || !Crypto.util) {
(function () {
var base64map = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
// Global Crypto object
var Crypto = window.Crypto = {};
// Crypto utilities
var util = Crypto.util = {
// Bit-wise rotate left
rotl: function (n, b) {
return (n << b) | (n >>> (32 - b));
},
// Bit-wise rotate right
rotr: function (n, b) {
return (n << (32 - b)) | (n >>> b);
},
// Swap big-endian to little-endian and vice versa
endian: function (n) {
// If number given, swap endian
if (n.constructor == Number) {
return util.rotl(n, 8) & 0x00FF00FF |
util.rotl(n, 24) & 0xFF00FF00;
}
// Else, assume array and swap all items
for (var i = 0; i < n.length; i++)
n[i] = util.endian(n[i]);
return n;
},
// Generate an array of any length of random bytes
randomBytes: function (n) {
for (var bytes = []; n > 0; n--)
bytes.push(Math.floor(Math.random() * 256));
return bytes;
},
// Convert a byte array to big-endian 32-bit words
bytesToWords: function (bytes) {
for (var words = [], i = 0, b = 0; i < bytes.length; i++, b += 8)
words[b >>> 5] |= (bytes[i] & 0xFF) << (24 - b % 32);
return words;
},
// Convert big-endian 32-bit words to a byte array
wordsToBytes: function (words) {
for (var bytes = [], b = 0; b < words.length * 32; b += 8)
bytes.push((words[b >>> 5] >>> (24 - b % 32)) & 0xFF);
return bytes;
},
// Convert a byte array to a hex string
bytesToHex: function (bytes) {
for (var hex = [], i = 0; i < bytes.length; i++) {
hex.push((bytes[i] >>> 4).toString(16));
hex.push((bytes[i] & 0xF).toString(16));
}
return hex.join("");
},
// Convert a hex string to a byte array
hexToBytes: function (hex) {
for (var bytes = [], c = 0; c < hex.length; c += 2)
bytes.push(parseInt(hex.substr(c, 2), 16));
return bytes;
},
// Convert a byte array to a base-64 string
bytesToBase64: function (bytes) {
for (var base64 = [], i = 0; i < bytes.length; i += 3) {
var triplet = (bytes[i] << 16) | (bytes[i + 1] << 8) | bytes[i + 2];
for (var j = 0; j < 4; j++) {
if (i * 8 + j * 6 <= bytes.length * 8)
base64.push(base64map.charAt((triplet >>> 6 * (3 - j)) & 0x3F));
else base64.push("=");
}
}
return base64.join("");
},
// Convert a base-64 string to a byte array
base64ToBytes: function (base64) {
// Remove non-base-64 characters
base64 = base64.replace(/[^A-Z0-9+\/]/ig, "");
for (var bytes = [], i = 0, imod4 = 0; i < base64.length; imod4 = ++i % 4) {
if (imod4 == 0) continue;
bytes.push(((base64map.indexOf(base64.charAt(i - 1)) & (Math.pow(2, -2 * imod4 + 8) - 1)) << (imod4 * 2)) |
(base64map.indexOf(base64.charAt(i)) >>> (6 - imod4 * 2)));
}
return bytes;
}
};
// Crypto character encodings
var charenc = Crypto.charenc = {};
// UTF-8 encoding
var UTF8 = charenc.UTF8 = {
// Convert a string to a byte array
stringToBytes: function (str) {
return Binary.stringToBytes(unescape(encodeURIComponent(str)));
},
// Convert a byte array to a string
bytesToString: function (bytes) {
return decodeURIComponent(escape(Binary.bytesToString(bytes)));
}
};
// Binary encoding
var Binary = charenc.Binary = {
// Convert a string to a byte array
stringToBytes: function (str) {
for (var bytes = [], i = 0; i < str.length; i++)
bytes.push(str.charCodeAt(i) & 0xFF);
return bytes;
},
// Convert a byte array to a string
bytesToString: function (bytes) {
for (var str = [], i = 0; i < bytes.length; i++)
str.push(String.fromCharCode(bytes[i]));
return str.join("");
}
};
})();
}
</script>
<script type="text/javascript">
/*!
* Crypto-JS v2.5.4 SHA256.js
* http://code.google.com/p/crypto-js/
* Copyright (c) 2009-2013, Jeff Mott. All rights reserved.
* http://code.google.com/p/crypto-js/wiki/License
*/
(function () {
// Shortcuts
var C = Crypto,
util = C.util,
charenc = C.charenc,
UTF8 = charenc.UTF8,
Binary = charenc.Binary;
// Constants
var K = [0x428A2F98, 0x71374491, 0xB5C0FBCF, 0xE9B5DBA5,
0x3956C25B, 0x59F111F1, 0x923F82A4, 0xAB1C5ED5,
0xD807AA98, 0x12835B01, 0x243185BE, 0x550C7DC3,
0x72BE5D74, 0x80DEB1FE, 0x9BDC06A7, 0xC19BF174,
0xE49B69C1, 0xEFBE4786, 0x0FC19DC6, 0x240CA1CC,
0x2DE92C6F, 0x4A7484AA, 0x5CB0A9DC, 0x76F988DA,
0x983E5152, 0xA831C66D, 0xB00327C8, 0xBF597FC7,
0xC6E00BF3, 0xD5A79147, 0x06CA6351, 0x14292967,
0x27B70A85, 0x2E1B2138, 0x4D2C6DFC, 0x53380D13,
0x650A7354, 0x766A0ABB, 0x81C2C92E, 0x92722C85,
0xA2BFE8A1, 0xA81A664B, 0xC24B8B70, 0xC76C51A3,
0xD192E819, 0xD6990624, 0xF40E3585, 0x106AA070,
0x19A4C116, 0x1E376C08, 0x2748774C, 0x34B0BCB5,
0x391C0CB3, 0x4ED8AA4A, 0x5B9CCA4F, 0x682E6FF3,
0x748F82EE, 0x78A5636F, 0x84C87814, 0x8CC70208,
0x90BEFFFA, 0xA4506CEB, 0xBEF9A3F7, 0xC67178F2];
// Public API
var SHA256 = C.SHA256 = function (message, options) {
var digestbytes = util.wordsToBytes(SHA256._sha256(message));
return options && options.asBytes ? digestbytes :
options && options.asString ? Binary.bytesToString(digestbytes) :
util.bytesToHex(digestbytes);
};
// The core
SHA256._sha256 = function (message) {
// Convert to byte array
if (message.constructor == String) message = UTF8.stringToBytes(message);
/* else, assume byte array already */
var m = util.bytesToWords(message),
l = message.length * 8,
H = [0x6A09E667, 0xBB67AE85, 0x3C6EF372, 0xA54FF53A,
0x510E527F, 0x9B05688C, 0x1F83D9AB, 0x5BE0CD19],
w = [],
a, b, c, d, e, f, g, h, i, j,
t1, t2;
// Padding
m[l >> 5] |= 0x80 << (24 - l % 32);
m[((l + 64 >> 9) << 4) + 15] = l;
for (var i = 0; i < m.length; i += 16) {
a = H[0];
b = H[1];
c = H[2];
d = H[3];
e = H[4];
f = H[5];
g = H[6];
h = H[7];
for (var j = 0; j < 64; j++) {
if (j < 16) w[j] = m[j + i];
else {
var gamma0x = w[j - 15],
gamma1x = w[j - 2],
gamma0 = ((gamma0x << 25) | (gamma0x >>> 7)) ^
((gamma0x << 14) | (gamma0x >>> 18)) ^
(gamma0x >>> 3),
gamma1 = ((gamma1x << 15) | (gamma1x >>> 17)) ^
((gamma1x << 13) | (gamma1x >>> 19)) ^
(gamma1x >>> 10);
w[j] = gamma0 + (w[j - 7] >>> 0) +
gamma1 + (w[j - 16] >>> 0);
}
var ch = e & f ^ ~e & g,
maj = a & b ^ a & c ^ b & c,
sigma0 = ((a << 30) | (a >>> 2)) ^
((a << 19) | (a >>> 13)) ^
((a << 10) | (a >>> 22)),
sigma1 = ((e << 26) | (e >>> 6)) ^
((e << 21) | (e >>> 11)) ^
((e << 7) | (e >>> 25));
t1 = (h >>> 0) + sigma1 + ch + (K[j]) + (w[j] >>> 0);
t2 = sigma0 + maj;
h = g;
g = f;
f = e;
e = (d + t1) >>> 0;
d = c;
c = b;
b = a;
a = (t1 + t2) >>> 0;
}
H[0] += a;
H[1] += b;
H[2] += c;
H[3] += d;
H[4] += e;
H[5] += f;
H[6] += g;
H[7] += h;
}
return H;
};
// Package private blocksize
SHA256._blocksize = 16;
SHA256._digestsize = 32;
})();
</script>
<script type="text/javascript">
/*!
* Crypto-JS v2.5.4 PBKDF2.js
* http://code.google.com/p/crypto-js/
* Copyright (c) 2009-2013, Jeff Mott. All rights reserved.
* http://code.google.com/p/crypto-js/wiki/License
*/
(function () {
// Shortcuts
var C = Crypto,
util = C.util,
charenc = C.charenc,
UTF8 = charenc.UTF8,
Binary = charenc.Binary;
C.PBKDF2 = function (password, salt, keylen, options) {
// Convert to byte arrays
if (password.constructor == String) password = UTF8.stringToBytes(password);
if (salt.constructor == String) salt = UTF8.stringToBytes(salt);
/* else, assume byte arrays already */
// Defaults
var hasher = options && options.hasher || C.SHA1,
iterations = options && options.iterations || 1;
// Pseudo-random function
function PRF(password, salt) {
return C.HMAC(hasher, salt, password, { asBytes: true });
}
// Generate key
var derivedKeyBytes = [],
blockindex = 1;
while (derivedKeyBytes.length < keylen) {
var block = PRF(password, salt.concat(util.wordsToBytes([blockindex])));
for (var u = block, i = 1; i < iterations; i++) {
u = PRF(password, u);
for (var j = 0; j < block.length; j++) block[j] ^= u[j];
}
derivedKeyBytes = derivedKeyBytes.concat(block);
blockindex++;
}
// Truncate excess bytes
derivedKeyBytes.length = keylen;
return options && options.asBytes ? derivedKeyBytes :
options && options.asString ? Binary.bytesToString(derivedKeyBytes) :
util.bytesToHex(derivedKeyBytes);
};
})();
</script>
<script type="text/javascript">
/*!
* Crypto-JS v2.5.4 HMAC.js
* http://code.google.com/p/crypto-js/
* Copyright (c) 2009-2013, Jeff Mott. All rights reserved.
* http://code.google.com/p/crypto-js/wiki/License
*/
(function () {
// Shortcuts
var C = Crypto,
util = C.util,
charenc = C.charenc,
UTF8 = charenc.UTF8,
Binary = charenc.Binary;
C.HMAC = function (hasher, message, key, options) {
// Convert to byte arrays
if (message.constructor == String) message = UTF8.stringToBytes(message);
if (key.constructor == String) key = UTF8.stringToBytes(key);
/* else, assume byte arrays already */
// Allow arbitrary length keys
if (key.length > hasher._blocksize * 4)
key = hasher(key, { asBytes: true });
// XOR keys with pad constants
var okey = key.slice(0),
ikey = key.slice(0);
for (var i = 0; i < hasher._blocksize * 4; i++) {
okey[i] ^= 0x5C;
ikey[i] ^= 0x36;
}
var hmacbytes = hasher(okey.concat(hasher(ikey.concat(message), { asBytes: true })), { asBytes: true });
return options && options.asBytes ? hmacbytes :
options && options.asString ? Binary.bytesToString(hmacbytes) :
util.bytesToHex(hmacbytes);
};
})();
</script>
<script type="text/javascript">
/*!
* Crypto-JS v2.5.4 AES.js
* http://code.google.com/p/crypto-js/
* Copyright (c) 2009-2013, Jeff Mott. All rights reserved.
* http://code.google.com/p/crypto-js/wiki/License
*/
(function () {
// Shortcuts
var C = Crypto,
util = C.util,
charenc = C.charenc,
UTF8 = charenc.UTF8;
// Precomputed SBOX
var SBOX = [0x63, 0x7c, 0x77, 0x7b, 0xf2, 0x6b, 0x6f, 0xc5,
0x30, 0x01, 0x67, 0x2b, 0xfe, 0xd7, 0xab, 0x76,
0xca, 0x82, 0xc9, 0x7d, 0xfa, 0x59, 0x47, 0xf0,
0xad, 0xd4, 0xa2, 0xaf, 0x9c, 0xa4, 0x72, 0xc0,
0xb7, 0xfd, 0x93, 0x26, 0x36, 0x3f, 0xf7, 0xcc,
0x34, 0xa5, 0xe5, 0xf1, 0x71, 0xd8, 0x31, 0x15,
0x04, 0xc7, 0x23, 0xc3, 0x18, 0x96, 0x05, 0x9a,
0x07, 0x12, 0x80, 0xe2, 0xeb, 0x27, 0xb2, 0x75,
0x09, 0x83, 0x2c, 0x1a, 0x1b, 0x6e, 0x5a, 0xa0,
0x52, 0x3b, 0xd6, 0xb3, 0x29, 0xe3, 0x2f, 0x84,
0x53, 0xd1, 0x00, 0xed, 0x20, 0xfc, 0xb1, 0x5b,
0x6a, 0xcb, 0xbe, 0x39, 0x4a, 0x4c, 0x58, 0xcf,
0xd0, 0xef, 0xaa, 0xfb, 0x43, 0x4d, 0x33, 0x85,
0x45, 0xf9, 0x02, 0x7f, 0x50, 0x3c, 0x9f, 0xa8,
0x51, 0xa3, 0x40, 0x8f, 0x92, 0x9d, 0x38, 0xf5,
0xbc, 0xb6, 0xda, 0x21, 0x10, 0xff, 0xf3, 0xd2,
0xcd, 0x0c, 0x13, 0xec, 0x5f, 0x97, 0x44, 0x17,
0xc4, 0xa7, 0x7e, 0x3d, 0x64, 0x5d, 0x19, 0x73,
0x60, 0x81, 0x4f, 0xdc, 0x22, 0x2a, 0x90, 0x88,
0x46, 0xee, 0xb8, 0x14, 0xde, 0x5e, 0x0b, 0xdb,
0xe0, 0x32, 0x3a, 0x0a, 0x49, 0x06, 0x24, 0x5c,
0xc2, 0xd3, 0xac, 0x62, 0x91, 0x95, 0xe4, 0x79,
0xe7, 0xc8, 0x37, 0x6d, 0x8d, 0xd5, 0x4e, 0xa9,
0x6c, 0x56, 0xf4, 0xea, 0x65, 0x7a, 0xae, 0x08,
0xba, 0x78, 0x25, 0x2e, 0x1c, 0xa6, 0xb4, 0xc6,
0xe8, 0xdd, 0x74, 0x1f, 0x4b, 0xbd, 0x8b, 0x8a,
0x70, 0x3e, 0xb5, 0x66, 0x48, 0x03, 0xf6, 0x0e,
0x61, 0x35, 0x57, 0xb9, 0x86, 0xc1, 0x1d, 0x9e,
0xe1, 0xf8, 0x98, 0x11, 0x69, 0xd9, 0x8e, 0x94,
0x9b, 0x1e, 0x87, 0xe9, 0xce, 0x55, 0x28, 0xdf,
0x8c, 0xa1, 0x89, 0x0d, 0xbf, 0xe6, 0x42, 0x68,
0x41, 0x99, 0x2d, 0x0f, 0xb0, 0x54, 0xbb, 0x16];
// Compute inverse SBOX lookup table
for (var INVSBOX = [], i = 0; i < 256; i++) INVSBOX[SBOX[i]] = i;
// Compute multiplication in GF(2^8) lookup tables
var MULT2 = [],
MULT3 = [],
MULT9 = [],
MULTB = [],
MULTD = [],
MULTE = [];
function xtime(a, b) {
for (var result = 0, i = 0; i < 8; i++) {
if (b & 1) result ^= a;
var hiBitSet = a & 0x80;
a = (a << 1) & 0xFF;
if (hiBitSet) a ^= 0x1b;
b >>>= 1;
}
return result;
}
for (var i = 0; i < 256; i++) {
MULT2[i] = xtime(i, 2);
MULT3[i] = xtime(i, 3);
MULT9[i] = xtime(i, 9);
MULTB[i] = xtime(i, 0xB);
MULTD[i] = xtime(i, 0xD);
MULTE[i] = xtime(i, 0xE);
}
// Precomputed RCon lookup
var RCON = [0x00, 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, 0x1b, 0x36];
// Inner state
var state = [[], [], [], []],
keylength,
nrounds,
keyschedule;
var AES = C.AES = {
/**
* Public API
*/
encrypt: function (message, password, options) {
options = options || {};
// Determine mode
var mode = options.mode || new C.mode.OFB;
// Allow mode to override options
if (mode.fixOptions) mode.fixOptions(options);
var
// Convert to bytes if message is a string
m = (
message.constructor == String ?
UTF8.stringToBytes(message) :
message
),
// Generate random IV
iv = options.iv || util.randomBytes(AES._blocksize * 4),
// Generate key
k = (
password.constructor == String ?
// Derive key from pass-phrase
C.PBKDF2(password, iv, 32, { asBytes: true }) :
// else, assume byte array representing cryptographic key
password
);
// Encrypt
AES._init(k);
mode.encrypt(AES, m, iv);
// Return ciphertext
m = options.iv ? m : iv.concat(m);
return (options && options.asBytes) ? m : util.bytesToBase64(m);
},
decrypt: function (ciphertext, password, options) {
options = options || {};
// Determine mode
var mode = options.mode || new C.mode.OFB;
// Allow mode to override options
if (mode.fixOptions) mode.fixOptions(options);
var
// Convert to bytes if ciphertext is a string
c = (
ciphertext.constructor == String ?
util.base64ToBytes(ciphertext) :
ciphertext
),
// Separate IV and message
iv = options.iv || c.splice(0, AES._blocksize * 4),
// Generate key
k = (
password.constructor == String ?
// Derive key from pass-phrase
C.PBKDF2(password, iv, 32, { asBytes: true }) :
// else, assume byte array representing cryptographic key
password
);
// Decrypt
AES._init(k);
mode.decrypt(AES, c, iv);
// Return plaintext
return (options && options.asBytes) ? c : UTF8.bytesToString(c);
},
/**
* Package private methods and properties
*/
_blocksize: 4,
_encryptblock: function (m, offset) {
// Set input
for (var row = 0; row < AES._blocksize; row++) {
for (var col = 0; col < 4; col++)
state[row][col] = m[offset + col * 4 + row];
}
// Add round key
for (var row = 0; row < 4; row++) {
for (var col = 0; col < 4; col++)
state[row][col] ^= keyschedule[col][row];
}
for (var round = 1; round < nrounds; round++) {
// Sub bytes
for (var row = 0; row < 4; row++) {
for (var col = 0; col < 4; col++)
state[row][col] = SBOX[state[row][col]];
}
// Shift rows
state[1].push(state[1].shift());
state[2].push(state[2].shift());
state[2].push(state[2].shift());
state[3].unshift(state[3].pop());
// Mix columns
for (var col = 0; col < 4; col++) {
var s0 = state[0][col],
s1 = state[1][col],
s2 = state[2][col],
s3 = state[3][col];
state[0][col] = MULT2[s0] ^ MULT3[s1] ^ s2 ^ s3;
state[1][col] = s0 ^ MULT2[s1] ^ MULT3[s2] ^ s3;
state[2][col] = s0 ^ s1 ^ MULT2[s2] ^ MULT3[s3];
state[3][col] = MULT3[s0] ^ s1 ^ s2 ^ MULT2[s3];
}
// Add round key
for (var row = 0; row < 4; row++) {
for (var col = 0; col < 4; col++)
state[row][col] ^= keyschedule[round * 4 + col][row];
}
}
// Sub bytes
for (var row = 0; row < 4; row++) {
for (var col = 0; col < 4; col++)
state[row][col] = SBOX[state[row][col]];
}
// Shift rows
state[1].push(state[1].shift());
state[2].push(state[2].shift());
state[2].push(state[2].shift());
state[3].unshift(state[3].pop());
// Add round key
for (var row = 0; row < 4; row++) {
for (var col = 0; col < 4; col++)
state[row][col] ^= keyschedule[nrounds * 4 + col][row];
}
// Set output
for (var row = 0; row < AES._blocksize; row++) {
for (var col = 0; col < 4; col++)
m[offset + col * 4 + row] = state[row][col];
}
},
_decryptblock: function (c, offset) {
// Set input
for (var row = 0; row < AES._blocksize; row++) {
for (var col = 0; col < 4; col++)
state[row][col] = c[offset + col * 4 + row];
}
// Add round key
for (var row = 0; row < 4; row++) {
for (var col = 0; col < 4; col++)
state[row][col] ^= keyschedule[nrounds * 4 + col][row];
}
for (var round = 1; round < nrounds; round++) {
// Inv shift rows
state[1].unshift(state[1].pop());
state[2].push(state[2].shift());
state[2].push(state[2].shift());
state[3].push(state[3].shift());
// Inv sub bytes
for (var row = 0; row < 4; row++) {
for (var col = 0; col < 4; col++)
state[row][col] = INVSBOX[state[row][col]];
}
// Add round key
for (var row = 0; row < 4; row++) {
for (var col = 0; col < 4; col++)
state[row][col] ^= keyschedule[(nrounds - round) * 4 + col][row];
}
// Inv mix columns
for (var col = 0; col < 4; col++) {
var s0 = state[0][col],
s1 = state[1][col],
s2 = state[2][col],
s3 = state[3][col];
state[0][col] = MULTE[s0] ^ MULTB[s1] ^ MULTD[s2] ^ MULT9[s3];
state[1][col] = MULT9[s0] ^ MULTE[s1] ^ MULTB[s2] ^ MULTD[s3];
state[2][col] = MULTD[s0] ^ MULT9[s1] ^ MULTE[s2] ^ MULTB[s3];
state[3][col] = MULTB[s0] ^ MULTD[s1] ^ MULT9[s2] ^ MULTE[s3];
}
}
// Inv shift rows
state[1].unshift(state[1].pop());
state[2].push(state[2].shift());
state[2].push(state[2].shift());
state[3].push(state[3].shift());
// Inv sub bytes
for (var row = 0; row < 4; row++) {
for (var col = 0; col < 4; col++)
state[row][col] = INVSBOX[state[row][col]];
}
// Add round key
for (var row = 0; row < 4; row++) {
for (var col = 0; col < 4; col++)
state[row][col] ^= keyschedule[col][row];
}
// Set output
for (var row = 0; row < AES._blocksize; row++) {
for (var col = 0; col < 4; col++)
c[offset + col * 4 + row] = state[row][col];
}
},
/**
* Private methods
*/
_init: function (k) {
keylength = k.length / 4;
nrounds = keylength + 6;
AES._keyexpansion(k);
},
// Generate a key schedule
_keyexpansion: function (k) {
keyschedule = [];
for (var row = 0; row < keylength; row++) {
keyschedule[row] = [
k[row * 4],
k[row * 4 + 1],
k[row * 4 + 2],
k[row * 4 + 3]
];
}
for (var row = keylength; row < AES._blocksize * (nrounds + 1); row++) {
var temp = [
keyschedule[row - 1][0],
keyschedule[row - 1][1],
keyschedule[row - 1][2],
keyschedule[row - 1][3]
];
if (row % keylength == 0) {
// Rot word
temp.push(temp.shift());
// Sub word
temp[0] = SBOX[temp[0]];
temp[1] = SBOX[temp[1]];
temp[2] = SBOX[temp[2]];
temp[3] = SBOX[temp[3]];
temp[0] ^= RCON[row / keylength];
} else if (keylength > 6 && row % keylength == 4) {