diff options
Diffstat (limited to 'frontend')
| -rw-r--r-- | frontend/aes-js.js | 802 | ||||
| -rw-r--r-- | frontend/blogext.css | 65 | ||||
| -rw-r--r-- | frontend/decryptor.js | 84 | ||||
| -rw-r--r-- | frontend/footnoter.js | 24 | ||||
| -rw-r--r-- | frontend/scrypt.js | 452 | ||||
| -rw-r--r-- | frontend/sha256.js | 172 |
6 files changed, 1599 insertions, 0 deletions
diff --git a/frontend/aes-js.js b/frontend/aes-js.js new file mode 100644 index 0000000..ec49bc5 --- /dev/null +++ b/frontend/aes-js.js @@ -0,0 +1,802 @@ +(function(root) { + "use strict"; + + function checkInt(value) { + return (parseInt(value) === value); + } + + function checkInts(arrayish) { + if (!checkInt(arrayish.length)) { return false; } + + for (var i = 0; i < arrayish.length; i++) { + if (!checkInt(arrayish[i]) || arrayish[i] < 0 || arrayish[i] > 255) { + return false; + } + } + + return true; + } + + function coerceArray(arg, copy) { + + // ArrayBuffer view + if (arg.buffer && ArrayBuffer.isView(arg) && arg.name === 'Uint8Array') { + + if (copy) { + if (arg.slice) { + arg = arg.slice(); + } else { + arg = Array.prototype.slice.call(arg); + } + } + + return arg; + } + + // It's an array; check it is a valid representation of a byte + if (Array.isArray(arg)) { + if (!checkInts(arg)) { + throw new Error('Array contains invalid value: ' + arg); + } + + return new Uint8Array(arg); + } + + // Something else, but behaves like an array (maybe a Buffer? Arguments?) + if (checkInt(arg.length) && checkInts(arg)) { + return new Uint8Array(arg); + } + + throw new Error('unsupported array-like object'); + } + + function createArray(length) { + return new Uint8Array(length); + } + + function copyArray(sourceArray, targetArray, targetStart, sourceStart, sourceEnd) { + if (sourceStart != null || sourceEnd != null) { + if (sourceArray.slice) { + sourceArray = sourceArray.slice(sourceStart, sourceEnd); + } else { + sourceArray = Array.prototype.slice.call(sourceArray, sourceStart, sourceEnd); + } + } + targetArray.set(sourceArray, targetStart); + } + + + + var convertUtf8 = (function() { + function toBytes(text) { + var result = [], i = 0; + text = encodeURI(text); + while (i < text.length) { + var c = text.charCodeAt(i++); + + // if it is a % sign, encode the following 2 bytes as a hex value + if (c === 37) { + result.push(parseInt(text.substr(i, 2), 16)) + i += 2; + + // otherwise, just the actual byte + } else { + result.push(c) + } + } + + return coerceArray(result); + } + + function fromBytes(bytes) { + var result = [], i = 0; + + while (i < bytes.length) { + var c = bytes[i]; + + if (c < 128) { + result.push(String.fromCharCode(c)); + i++; + } else if (c > 191 && c < 224) { + result.push(String.fromCharCode(((c & 0x1f) << 6) | (bytes[i + 1] & 0x3f))); + i += 2; + } else { + result.push(String.fromCharCode(((c & 0x0f) << 12) | ((bytes[i + 1] & 0x3f) << 6) | (bytes[i + 2] & 0x3f))); + i += 3; + } + } + + return result.join(''); + } + + return { + toBytes: toBytes, + fromBytes: fromBytes, + } + })(); + + var convertHex = (function() { + function toBytes(text) { + var result = []; + for (var i = 0; i < text.length; i += 2) { + result.push(parseInt(text.substr(i, 2), 16)); + } + + return result; + } + + // http://ixti.net/development/javascript/2011/11/11/base64-encodedecode-of-utf8-in-browser-with-js.html + var Hex = '0123456789abcdef'; + + function fromBytes(bytes) { + var result = []; + for (var i = 0; i < bytes.length; i++) { + var v = bytes[i]; + result.push(Hex[(v & 0xf0) >> 4] + Hex[v & 0x0f]); + } + return result.join(''); + } + + return { + toBytes: toBytes, + fromBytes: fromBytes, + } + })(); + + + // Number of rounds by keysize + var numberOfRounds = {16: 10, 24: 12, 32: 14} + + // Round constant words + var rcon = [0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, 0x1b, 0x36, 0x6c, 0xd8, 0xab, 0x4d, 0x9a, 0x2f, 0x5e, 0xbc, 0x63, 0xc6, 0x97, 0x35, 0x6a, 0xd4, 0xb3, 0x7d, 0xfa, 0xef, 0xc5, 0x91]; + + // S-box and Inverse S-box (S is for Substitution) + var S = [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]; + var Si =[0x52, 0x09, 0x6a, 0xd5, 0x30, 0x36, 0xa5, 0x38, 0xbf, 0x40, 0xa3, 0x9e, 0x81, 0xf3, 0xd7, 0xfb, 0x7c, 0xe3, 0x39, 0x82, 0x9b, 0x2f, 0xff, 0x87, 0x34, 0x8e, 0x43, 0x44, 0xc4, 0xde, 0xe9, 0xcb, 0x54, 0x7b, 0x94, 0x32, 0xa6, 0xc2, 0x23, 0x3d, 0xee, 0x4c, 0x95, 0x0b, 0x42, 0xfa, 0xc3, 0x4e, 0x08, 0x2e, 0xa1, 0x66, 0x28, 0xd9, 0x24, 0xb2, 0x76, 0x5b, 0xa2, 0x49, 0x6d, 0x8b, 0xd1, 0x25, 0x72, 0xf8, 0xf6, 0x64, 0x86, 0x68, 0x98, 0x16, 0xd4, 0xa4, 0x5c, 0xcc, 0x5d, 0x65, 0xb6, 0x92, 0x6c, 0x70, 0x48, 0x50, 0xfd, 0xed, 0xb9, 0xda, 0x5e, 0x15, 0x46, 0x57, 0xa7, 0x8d, 0x9d, 0x84, 0x90, 0xd8, 0xab, 0x00, 0x8c, 0xbc, 0xd3, 0x0a, 0xf7, 0xe4, 0x58, 0x05, 0xb8, 0xb3, 0x45, 0x06, 0xd0, 0x2c, 0x1e, 0x8f, 0xca, 0x3f, 0x0f, 0x02, 0xc1, 0xaf, 0xbd, 0x03, 0x01, 0x13, 0x8a, 0x6b, 0x3a, 0x91, 0x11, 0x41, 0x4f, 0x67, 0xdc, 0xea, 0x97, 0xf2, 0xcf, 0xce, 0xf0, 0xb4, 0xe6, 0x73, 0x96, 0xac, 0x74, 0x22, 0xe7, 0xad, 0x35, 0x85, 0xe2, 0xf9, 0x37, 0xe8, 0x1c, 0x75, 0xdf, 0x6e, 0x47, 0xf1, 0x1a, 0x71, 0x1d, 0x29, 0xc5, 0x89, 0x6f, 0xb7, 0x62, 0x0e, 0xaa, 0x18, 0xbe, 0x1b, 0xfc, 0x56, 0x3e, 0x4b, 0xc6, 0xd2, 0x79, 0x20, 0x9a, 0xdb, 0xc0, 0xfe, 0x78, 0xcd, 0x5a, 0xf4, 0x1f, 0xdd, 0xa8, 0x33, 0x88, 0x07, 0xc7, 0x31, 0xb1, 0x12, 0x10, 0x59, 0x27, 0x80, 0xec, 0x5f, 0x60, 0x51, 0x7f, 0xa9, 0x19, 0xb5, 0x4a, 0x0d, 0x2d, 0xe5, 0x7a, 0x9f, 0x93, 0xc9, 0x9c, 0xef, 0xa0, 0xe0, 0x3b, 0x4d, 0xae, 0x2a, 0xf5, 0xb0, 0xc8, 0xeb, 0xbb, 0x3c, 0x83, 0x53, 0x99, 0x61, 0x17, 0x2b, 0x04, 0x7e, 0xba, 0x77, 0xd6, 0x26, 0xe1, 0x69, 0x14, 0x63, 0x55, 0x21, 0x0c, 0x7d]; + + // Transformations for encryption + var T1 = [0xc66363a5, 0xf87c7c84, 0xee777799, 0xf67b7b8d, 0xfff2f20d, 0xd66b6bbd, 0xde6f6fb1, 0x91c5c554, 0x60303050, 0x02010103, 0xce6767a9, 0x562b2b7d, 0xe7fefe19, 0xb5d7d762, 0x4dababe6, 0xec76769a, 0x8fcaca45, 0x1f82829d, 0x89c9c940, 0xfa7d7d87, 0xeffafa15, 0xb25959eb, 0x8e4747c9, 0xfbf0f00b, 0x41adadec, 0xb3d4d467, 0x5fa2a2fd, 0x45afafea, 0x239c9cbf, 0x53a4a4f7, 0xe4727296, 0x9bc0c05b, 0x75b7b7c2, 0xe1fdfd1c, 0x3d9393ae, 0x4c26266a, 0x6c36365a, 0x7e3f3f41, 0xf5f7f702, 0x83cccc4f, 0x6834345c, 0x51a5a5f4, 0xd1e5e534, 0xf9f1f108, 0xe2717193, 0xabd8d873, 0x62313153, 0x2a15153f, 0x0804040c, 0x95c7c752, 0x46232365, 0x9dc3c35e, 0x30181828, 0x379696a1, 0x0a05050f, 0x2f9a9ab5, 0x0e070709, 0x24121236, 0x1b80809b, 0xdfe2e23d, 0xcdebeb26, 0x4e272769, 0x7fb2b2cd, 0xea75759f, 0x1209091b, 0x1d83839e, 0x582c2c74, 0x341a1a2e, 0x361b1b2d, 0xdc6e6eb2, 0xb45a5aee, 0x5ba0a0fb, 0xa45252f6, 0x763b3b4d, 0xb7d6d661, 0x7db3b3ce, 0x5229297b, 0xdde3e33e, 0x5e2f2f71, 0x13848497, 0xa65353f5, 0xb9d1d168, 0x00000000, 0xc1eded2c, 0x40202060, 0xe3fcfc1f, 0x79b1b1c8, 0xb65b5bed, 0xd46a6abe, 0x8dcbcb46, 0x67bebed9, 0x7239394b, 0x944a4ade, 0x984c4cd4, 0xb05858e8, 0x85cfcf4a, 0xbbd0d06b, 0xc5efef2a, 0x4faaaae5, 0xedfbfb16, 0x864343c5, 0x9a4d4dd7, 0x66333355, 0x11858594, 0x8a4545cf, 0xe9f9f910, 0x04020206, 0xfe7f7f81, 0xa05050f0, 0x783c3c44, 0x259f9fba, 0x4ba8a8e3, 0xa25151f3, 0x5da3a3fe, 0x804040c0, 0x058f8f8a, 0x3f9292ad, 0x219d9dbc, 0x70383848, 0xf1f5f504, 0x63bcbcdf, 0x77b6b6c1, 0xafdada75, 0x42212163, 0x20101030, 0xe5ffff1a, 0xfdf3f30e, 0xbfd2d26d, 0x81cdcd4c, 0x180c0c14, 0x26131335, 0xc3ecec2f, 0xbe5f5fe1, 0x359797a2, 0x884444cc, 0x2e171739, 0x93c4c457, 0x55a7a7f2, 0xfc7e7e82, 0x7a3d3d47, 0xc86464ac, 0xba5d5de7, 0x3219192b, 0xe6737395, 0xc06060a0, 0x19818198, 0x9e4f4fd1, 0xa3dcdc7f, 0x44222266, 0x542a2a7e, 0x3b9090ab, 0x0b888883, 0x8c4646ca, 0xc7eeee29, 0x6bb8b8d3, 0x2814143c, 0xa7dede79, 0xbc5e5ee2, 0x160b0b1d, 0xaddbdb76, 0xdbe0e03b, 0x64323256, 0x743a3a4e, 0x140a0a1e, 0x924949db, 0x0c06060a, 0x4824246c, 0xb85c5ce4, 0x9fc2c25d, 0xbdd3d36e, 0x43acacef, 0xc46262a6, 0x399191a8, 0x319595a4, 0xd3e4e437, 0xf279798b, 0xd5e7e732, 0x8bc8c843, 0x6e373759, 0xda6d6db7, 0x018d8d8c, 0xb1d5d564, 0x9c4e4ed2, 0x49a9a9e0, 0xd86c6cb4, 0xac5656fa, 0xf3f4f407, 0xcfeaea25, 0xca6565af, 0xf47a7a8e, 0x47aeaee9, 0x10080818, 0x6fbabad5, 0xf0787888, 0x4a25256f, 0x5c2e2e72, 0x381c1c24, 0x57a6a6f1, 0x73b4b4c7, 0x97c6c651, 0xcbe8e823, 0xa1dddd7c, 0xe874749c, 0x3e1f1f21, 0x964b4bdd, 0x61bdbddc, 0x0d8b8b86, 0x0f8a8a85, 0xe0707090, 0x7c3e3e42, 0x71b5b5c4, 0xcc6666aa, 0x904848d8, 0x06030305, 0xf7f6f601, 0x1c0e0e12, 0xc26161a3, 0x6a35355f, 0xae5757f9, 0x69b9b9d0, 0x17868691, 0x99c1c158, 0x3a1d1d27, 0x279e9eb9, 0xd9e1e138, 0xebf8f813, 0x2b9898b3, 0x22111133, 0xd26969bb, 0xa9d9d970, 0x078e8e89, 0x339494a7, 0x2d9b9bb6, 0x3c1e1e22, 0x15878792, 0xc9e9e920, 0x87cece49, 0xaa5555ff, 0x50282878, 0xa5dfdf7a, 0x038c8c8f, 0x59a1a1f8, 0x09898980, 0x1a0d0d17, 0x65bfbfda, 0xd7e6e631, 0x844242c6, 0xd06868b8, 0x824141c3, 0x299999b0, 0x5a2d2d77, 0x1e0f0f11, 0x7bb0b0cb, 0xa85454fc, 0x6dbbbbd6, 0x2c16163a]; + var T2 = [0xa5c66363, 0x84f87c7c, 0x99ee7777, 0x8df67b7b, 0x0dfff2f2, 0xbdd66b6b, 0xb1de6f6f, 0x5491c5c5, 0x50603030, 0x03020101, 0xa9ce6767, 0x7d562b2b, 0x19e7fefe, 0x62b5d7d7, 0xe64dabab, 0x9aec7676, 0x458fcaca, 0x9d1f8282, 0x4089c9c9, 0x87fa7d7d, 0x15effafa, 0xebb25959, 0xc98e4747, 0x0bfbf0f0, 0xec41adad, 0x67b3d4d4, 0xfd5fa2a2, 0xea45afaf, 0xbf239c9c, 0xf753a4a4, 0x96e47272, 0x5b9bc0c0, 0xc275b7b7, 0x1ce1fdfd, 0xae3d9393, 0x6a4c2626, 0x5a6c3636, 0x417e3f3f, 0x02f5f7f7, 0x4f83cccc, 0x5c683434, 0xf451a5a5, 0x34d1e5e5, 0x08f9f1f1, 0x93e27171, 0x73abd8d8, 0x53623131, 0x3f2a1515, 0x0c080404, 0x5295c7c7, 0x65462323, 0x5e9dc3c3, 0x28301818, 0xa1379696, 0x0f0a0505, 0xb52f9a9a, 0x090e0707, 0x36241212, 0x9b1b8080, 0x3ddfe2e2, 0x26cdebeb, 0x694e2727, 0xcd7fb2b2, 0x9fea7575, 0x1b120909, 0x9e1d8383, 0x74582c2c, 0x2e341a1a, 0x2d361b1b, 0xb2dc6e6e, 0xeeb45a5a, 0xfb5ba0a0, 0xf6a45252, 0x4d763b3b, 0x61b7d6d6, 0xce7db3b3, 0x7b522929, 0x3edde3e3, 0x715e2f2f, 0x97138484, 0xf5a65353, 0x68b9d1d1, 0x00000000, 0x2cc1eded, 0x60402020, 0x1fe3fcfc, 0xc879b1b1, 0xedb65b5b, 0xbed46a6a, 0x468dcbcb, 0xd967bebe, 0x4b723939, 0xde944a4a, 0xd4984c4c, 0xe8b05858, 0x4a85cfcf, 0x6bbbd0d0, 0x2ac5efef, 0xe54faaaa, 0x16edfbfb, 0xc5864343, 0xd79a4d4d, 0x55663333, 0x94118585, 0xcf8a4545, 0x10e9f9f9, 0x06040202, 0x81fe7f7f, 0xf0a05050, 0x44783c3c, 0xba259f9f, 0xe34ba8a8, 0xf3a25151, 0xfe5da3a3, 0xc0804040, 0x8a058f8f, 0xad3f9292, 0xbc219d9d, 0x48703838, 0x04f1f5f5, 0xdf63bcbc, 0xc177b6b6, 0x75afdada, 0x63422121, 0x30201010, 0x1ae5ffff, 0x0efdf3f3, 0x6dbfd2d2, 0x4c81cdcd, 0x14180c0c, 0x35261313, 0x2fc3ecec, 0xe1be5f5f, 0xa2359797, 0xcc884444, 0x392e1717, 0x5793c4c4, 0xf255a7a7, 0x82fc7e7e, 0x477a3d3d, 0xacc86464, 0xe7ba5d5d, 0x2b321919, 0x95e67373, 0xa0c06060, 0x98198181, 0xd19e4f4f, 0x7fa3dcdc, 0x66442222, 0x7e542a2a, 0xab3b9090, 0x830b8888, 0xca8c4646, 0x29c7eeee, 0xd36bb8b8, 0x3c281414, 0x79a7dede, 0xe2bc5e5e, 0x1d160b0b, 0x76addbdb, 0x3bdbe0e0, 0x56643232, 0x4e743a3a, 0x1e140a0a, 0xdb924949, 0x0a0c0606, 0x6c482424, 0xe4b85c5c, 0x5d9fc2c2, 0x6ebdd3d3, 0xef43acac, 0xa6c46262, 0xa8399191, 0xa4319595, 0x37d3e4e4, 0x8bf27979, 0x32d5e7e7, 0x438bc8c8, 0x596e3737, 0xb7da6d6d, 0x8c018d8d, 0x64b1d5d5, 0xd29c4e4e, 0xe049a9a9, 0xb4d86c6c, 0xfaac5656, 0x07f3f4f4, 0x25cfeaea, 0xafca6565, 0x8ef47a7a, 0xe947aeae, 0x18100808, 0xd56fbaba, 0x88f07878, 0x6f4a2525, 0x725c2e2e, 0x24381c1c, 0xf157a6a6, 0xc773b4b4, 0x5197c6c6, 0x23cbe8e8, 0x7ca1dddd, 0x9ce87474, 0x213e1f1f, 0xdd964b4b, 0xdc61bdbd, 0x860d8b8b, 0x850f8a8a, 0x90e07070, 0x427c3e3e, 0xc471b5b5, 0xaacc6666, 0xd8904848, 0x05060303, 0x01f7f6f6, 0x121c0e0e, 0xa3c26161, 0x5f6a3535, 0xf9ae5757, 0xd069b9b9, 0x91178686, 0x5899c1c1, 0x273a1d1d, 0xb9279e9e, 0x38d9e1e1, 0x13ebf8f8, 0xb32b9898, 0x33221111, 0xbbd26969, 0x70a9d9d9, 0x89078e8e, 0xa7339494, 0xb62d9b9b, 0x223c1e1e, 0x92158787, 0x20c9e9e9, 0x4987cece, 0xffaa5555, 0x78502828, 0x7aa5dfdf, 0x8f038c8c, 0xf859a1a1, 0x80098989, 0x171a0d0d, 0xda65bfbf, 0x31d7e6e6, 0xc6844242, 0xb8d06868, 0xc3824141, 0xb0299999, 0x775a2d2d, 0x111e0f0f, 0xcb7bb0b0, 0xfca85454, 0xd66dbbbb, 0x3a2c1616]; + var T3 = [0x63a5c663, 0x7c84f87c, 0x7799ee77, 0x7b8df67b, 0xf20dfff2, 0x6bbdd66b, 0x6fb1de6f, 0xc55491c5, 0x30506030, 0x01030201, 0x67a9ce67, 0x2b7d562b, 0xfe19e7fe, 0xd762b5d7, 0xabe64dab, 0x769aec76, 0xca458fca, 0x829d1f82, 0xc94089c9, 0x7d87fa7d, 0xfa15effa, 0x59ebb259, 0x47c98e47, 0xf00bfbf0, 0xadec41ad, 0xd467b3d4, 0xa2fd5fa2, 0xafea45af, 0x9cbf239c, 0xa4f753a4, 0x7296e472, 0xc05b9bc0, 0xb7c275b7, 0xfd1ce1fd, 0x93ae3d93, 0x266a4c26, 0x365a6c36, 0x3f417e3f, 0xf702f5f7, 0xcc4f83cc, 0x345c6834, 0xa5f451a5, 0xe534d1e5, 0xf108f9f1, 0x7193e271, 0xd873abd8, 0x31536231, 0x153f2a15, 0x040c0804, 0xc75295c7, 0x23654623, 0xc35e9dc3, 0x18283018, 0x96a13796, 0x050f0a05, 0x9ab52f9a, 0x07090e07, 0x12362412, 0x809b1b80, 0xe23ddfe2, 0xeb26cdeb, 0x27694e27, 0xb2cd7fb2, 0x759fea75, 0x091b1209, 0x839e1d83, 0x2c74582c, 0x1a2e341a, 0x1b2d361b, 0x6eb2dc6e, 0x5aeeb45a, 0xa0fb5ba0, 0x52f6a452, 0x3b4d763b, 0xd661b7d6, 0xb3ce7db3, 0x297b5229, 0xe33edde3, 0x2f715e2f, 0x84971384, 0x53f5a653, 0xd168b9d1, 0x00000000, 0xed2cc1ed, 0x20604020, 0xfc1fe3fc, 0xb1c879b1, 0x5bedb65b, 0x6abed46a, 0xcb468dcb, 0xbed967be, 0x394b7239, 0x4ade944a, 0x4cd4984c, 0x58e8b058, 0xcf4a85cf, 0xd06bbbd0, 0xef2ac5ef, 0xaae54faa, 0xfb16edfb, 0x43c58643, 0x4dd79a4d, 0x33556633, 0x85941185, 0x45cf8a45, 0xf910e9f9, 0x02060402, 0x7f81fe7f, 0x50f0a050, 0x3c44783c, 0x9fba259f, 0xa8e34ba8, 0x51f3a251, 0xa3fe5da3, 0x40c08040, 0x8f8a058f, 0x92ad3f92, 0x9dbc219d, 0x38487038, 0xf504f1f5, 0xbcdf63bc, 0xb6c177b6, 0xda75afda, 0x21634221, 0x10302010, 0xff1ae5ff, 0xf30efdf3, 0xd26dbfd2, 0xcd4c81cd, 0x0c14180c, 0x13352613, 0xec2fc3ec, 0x5fe1be5f, 0x97a23597, 0x44cc8844, 0x17392e17, 0xc45793c4, 0xa7f255a7, 0x7e82fc7e, 0x3d477a3d, 0x64acc864, 0x5de7ba5d, 0x192b3219, 0x7395e673, 0x60a0c060, 0x81981981, 0x4fd19e4f, 0xdc7fa3dc, 0x22664422, 0x2a7e542a, 0x90ab3b90, 0x88830b88, 0x46ca8c46, 0xee29c7ee, 0xb8d36bb8, 0x143c2814, 0xde79a7de, 0x5ee2bc5e, 0x0b1d160b, 0xdb76addb, 0xe03bdbe0, 0x32566432, 0x3a4e743a, 0x0a1e140a, 0x49db9249, 0x060a0c06, 0x246c4824, 0x5ce4b85c, 0xc25d9fc2, 0xd36ebdd3, 0xacef43ac, 0x62a6c462, 0x91a83991, 0x95a43195, 0xe437d3e4, 0x798bf279, 0xe732d5e7, 0xc8438bc8, 0x37596e37, 0x6db7da6d, 0x8d8c018d, 0xd564b1d5, 0x4ed29c4e, 0xa9e049a9, 0x6cb4d86c, 0x56faac56, 0xf407f3f4, 0xea25cfea, 0x65afca65, 0x7a8ef47a, 0xaee947ae, 0x08181008, 0xbad56fba, 0x7888f078, 0x256f4a25, 0x2e725c2e, 0x1c24381c, 0xa6f157a6, 0xb4c773b4, 0xc65197c6, 0xe823cbe8, 0xdd7ca1dd, 0x749ce874, 0x1f213e1f, 0x4bdd964b, 0xbddc61bd, 0x8b860d8b, 0x8a850f8a, 0x7090e070, 0x3e427c3e, 0xb5c471b5, 0x66aacc66, 0x48d89048, 0x03050603, 0xf601f7f6, 0x0e121c0e, 0x61a3c261, 0x355f6a35, 0x57f9ae57, 0xb9d069b9, 0x86911786, 0xc15899c1, 0x1d273a1d, 0x9eb9279e, 0xe138d9e1, 0xf813ebf8, 0x98b32b98, 0x11332211, 0x69bbd269, 0xd970a9d9, 0x8e89078e, 0x94a73394, 0x9bb62d9b, 0x1e223c1e, 0x87921587, 0xe920c9e9, 0xce4987ce, 0x55ffaa55, 0x28785028, 0xdf7aa5df, 0x8c8f038c, 0xa1f859a1, 0x89800989, 0x0d171a0d, 0xbfda65bf, 0xe631d7e6, 0x42c68442, 0x68b8d068, 0x41c38241, 0x99b02999, 0x2d775a2d, 0x0f111e0f, 0xb0cb7bb0, 0x54fca854, 0xbbd66dbb, 0x163a2c16]; + var T4 = [0x6363a5c6, 0x7c7c84f8, 0x777799ee, 0x7b7b8df6, 0xf2f20dff, 0x6b6bbdd6, 0x6f6fb1de, 0xc5c55491, 0x30305060, 0x01010302, 0x6767a9ce, 0x2b2b7d56, 0xfefe19e7, 0xd7d762b5, 0xababe64d, 0x76769aec, 0xcaca458f, 0x82829d1f, 0xc9c94089, 0x7d7d87fa, 0xfafa15ef, 0x5959ebb2, 0x4747c98e, 0xf0f00bfb, 0xadadec41, 0xd4d467b3, 0xa2a2fd5f, 0xafafea45, 0x9c9cbf23, 0xa4a4f753, 0x727296e4, 0xc0c05b9b, 0xb7b7c275, 0xfdfd1ce1, 0x9393ae3d, 0x26266a4c, 0x36365a6c, 0x3f3f417e, 0xf7f702f5, 0xcccc4f83, 0x34345c68, 0xa5a5f451, 0xe5e534d1, 0xf1f108f9, 0x717193e2, 0xd8d873ab, 0x31315362, 0x15153f2a, 0x04040c08, 0xc7c75295, 0x23236546, 0xc3c35e9d, 0x18182830, 0x9696a137, 0x05050f0a, 0x9a9ab52f, 0x0707090e, 0x12123624, 0x80809b1b, 0xe2e23ddf, 0xebeb26cd, 0x2727694e, 0xb2b2cd7f, 0x75759fea, 0x09091b12, 0x83839e1d, 0x2c2c7458, 0x1a1a2e34, 0x1b1b2d36, 0x6e6eb2dc, 0x5a5aeeb4, 0xa0a0fb5b, 0x5252f6a4, 0x3b3b4d76, 0xd6d661b7, 0xb3b3ce7d, 0x29297b52, 0xe3e33edd, 0x2f2f715e, 0x84849713, 0x5353f5a6, 0xd1d168b9, 0x00000000, 0xeded2cc1, 0x20206040, 0xfcfc1fe3, 0xb1b1c879, 0x5b5bedb6, 0x6a6abed4, 0xcbcb468d, 0xbebed967, 0x39394b72, 0x4a4ade94, 0x4c4cd498, 0x5858e8b0, 0xcfcf4a85, 0xd0d06bbb, 0xefef2ac5, 0xaaaae54f, 0xfbfb16ed, 0x4343c586, 0x4d4dd79a, 0x33335566, 0x85859411, 0x4545cf8a, 0xf9f910e9, 0x02020604, 0x7f7f81fe, 0x5050f0a0, 0x3c3c4478, 0x9f9fba25, 0xa8a8e34b, 0x5151f3a2, 0xa3a3fe5d, 0x4040c080, 0x8f8f8a05, 0x9292ad3f, 0x9d9dbc21, 0x38384870, 0xf5f504f1, 0xbcbcdf63, 0xb6b6c177, 0xdada75af, 0x21216342, 0x10103020, 0xffff1ae5, 0xf3f30efd, 0xd2d26dbf, 0xcdcd4c81, 0x0c0c1418, 0x13133526, 0xecec2fc3, 0x5f5fe1be, 0x9797a235, 0x4444cc88, 0x1717392e, 0xc4c45793, 0xa7a7f255, 0x7e7e82fc, 0x3d3d477a, 0x6464acc8, 0x5d5de7ba, 0x19192b32, 0x737395e6, 0x6060a0c0, 0x81819819, 0x4f4fd19e, 0xdcdc7fa3, 0x22226644, 0x2a2a7e54, 0x9090ab3b, 0x8888830b, 0x4646ca8c, 0xeeee29c7, 0xb8b8d36b, 0x14143c28, 0xdede79a7, 0x5e5ee2bc, 0x0b0b1d16, 0xdbdb76ad, 0xe0e03bdb, 0x32325664, 0x3a3a4e74, 0x0a0a1e14, 0x4949db92, 0x06060a0c, 0x24246c48, 0x5c5ce4b8, 0xc2c25d9f, 0xd3d36ebd, 0xacacef43, 0x6262a6c4, 0x9191a839, 0x9595a431, 0xe4e437d3, 0x79798bf2, 0xe7e732d5, 0xc8c8438b, 0x3737596e, 0x6d6db7da, 0x8d8d8c01, 0xd5d564b1, 0x4e4ed29c, 0xa9a9e049, 0x6c6cb4d8, 0x5656faac, 0xf4f407f3, 0xeaea25cf, 0x6565afca, 0x7a7a8ef4, 0xaeaee947, 0x08081810, 0xbabad56f, 0x787888f0, 0x25256f4a, 0x2e2e725c, 0x1c1c2438, 0xa6a6f157, 0xb4b4c773, 0xc6c65197, 0xe8e823cb, 0xdddd7ca1, 0x74749ce8, 0x1f1f213e, 0x4b4bdd96, 0xbdbddc61, 0x8b8b860d, 0x8a8a850f, 0x707090e0, 0x3e3e427c, 0xb5b5c471, 0x6666aacc, 0x4848d890, 0x03030506, 0xf6f601f7, 0x0e0e121c, 0x6161a3c2, 0x35355f6a, 0x5757f9ae, 0xb9b9d069, 0x86869117, 0xc1c15899, 0x1d1d273a, 0x9e9eb927, 0xe1e138d9, 0xf8f813eb, 0x9898b32b, 0x11113322, 0x6969bbd2, 0xd9d970a9, 0x8e8e8907, 0x9494a733, 0x9b9bb62d, 0x1e1e223c, 0x87879215, 0xe9e920c9, 0xcece4987, 0x5555ffaa, 0x28287850, 0xdfdf7aa5, 0x8c8c8f03, 0xa1a1f859, 0x89898009, 0x0d0d171a, 0xbfbfda65, 0xe6e631d7, 0x4242c684, 0x6868b8d0, 0x4141c382, 0x9999b029, 0x2d2d775a, 0x0f0f111e, 0xb0b0cb7b, 0x5454fca8, 0xbbbbd66d, 0x16163a2c]; + + // Transformations for decryption + var T5 = [0x51f4a750, 0x7e416553, 0x1a17a4c3, 0x3a275e96, 0x3bab6bcb, 0x1f9d45f1, 0xacfa58ab, 0x4be30393, 0x2030fa55, 0xad766df6, 0x88cc7691, 0xf5024c25, 0x4fe5d7fc, 0xc52acbd7, 0x26354480, 0xb562a38f, 0xdeb15a49, 0x25ba1b67, 0x45ea0e98, 0x5dfec0e1, 0xc32f7502, 0x814cf012, 0x8d4697a3, 0x6bd3f9c6, 0x038f5fe7, 0x15929c95, 0xbf6d7aeb, 0x955259da, 0xd4be832d, 0x587421d3, 0x49e06929, 0x8ec9c844, 0x75c2896a, 0xf48e7978, 0x99583e6b, 0x27b971dd, 0xbee14fb6, 0xf088ad17, 0xc920ac66, 0x7dce3ab4, 0x63df4a18, 0xe51a3182, 0x97513360, 0x62537f45, 0xb16477e0, 0xbb6bae84, 0xfe81a01c, 0xf9082b94, 0x70486858, 0x8f45fd19, 0x94de6c87, 0x527bf8b7, 0xab73d323, 0x724b02e2, 0xe31f8f57, 0x6655ab2a, 0xb2eb2807, 0x2fb5c203, 0x86c57b9a, 0xd33708a5, 0x302887f2, 0x23bfa5b2, 0x02036aba, 0xed16825c, 0x8acf1c2b, 0xa779b492, 0xf307f2f0, 0x4e69e2a1, 0x65daf4cd, 0x0605bed5, 0xd134621f, 0xc4a6fe8a, 0x342e539d, 0xa2f355a0, 0x058ae132, 0xa4f6eb75, 0x0b83ec39, 0x4060efaa, 0x5e719f06, 0xbd6e1051, 0x3e218af9, 0x96dd063d, 0xdd3e05ae, 0x4de6bd46, 0x91548db5, 0x71c45d05, 0x0406d46f, 0x605015ff, 0x1998fb24, 0xd6bde997, 0x894043cc, 0x67d99e77, 0xb0e842bd, 0x07898b88, 0xe7195b38, 0x79c8eedb, 0xa17c0a47, 0x7c420fe9, 0xf8841ec9, 0x00000000, 0x09808683, 0x322bed48, 0x1e1170ac, 0x6c5a724e, 0xfd0efffb, 0x0f853856, 0x3daed51e, 0x362d3927, 0x0a0fd964, 0x685ca621, 0x9b5b54d1, 0x24362e3a, 0x0c0a67b1, 0x9357e70f, 0xb4ee96d2, 0x1b9b919e, 0x80c0c54f, 0x61dc20a2, 0x5a774b69, 0x1c121a16, 0xe293ba0a, 0xc0a02ae5, 0x3c22e043, 0x121b171d, 0x0e090d0b, 0xf28bc7ad, 0x2db6a8b9, 0x141ea9c8, 0x57f11985, 0xaf75074c, 0xee99ddbb, 0xa37f60fd, 0xf701269f, 0x5c72f5bc, 0x44663bc5, 0x5bfb7e34, 0x8b432976, 0xcb23c6dc, 0xb6edfc68, 0xb8e4f163, 0xd731dcca, 0x42638510, 0x13972240, 0x84c61120, 0x854a247d, 0xd2bb3df8, 0xaef93211, 0xc729a16d, 0x1d9e2f4b, 0xdcb230f3, 0x0d8652ec, 0x77c1e3d0, 0x2bb3166c, 0xa970b999, 0x119448fa, 0x47e96422, 0xa8fc8cc4, 0xa0f03f1a, 0x567d2cd8, 0x223390ef, 0x87494ec7, 0xd938d1c1, 0x8ccaa2fe, 0x98d40b36, 0xa6f581cf, 0xa57ade28, 0xdab78e26, 0x3fadbfa4, 0x2c3a9de4, 0x5078920d, 0x6a5fcc9b, 0x547e4662, 0xf68d13c2, 0x90d8b8e8, 0x2e39f75e, 0x82c3aff5, 0x9f5d80be, 0x69d0937c, 0x6fd52da9, 0xcf2512b3, 0xc8ac993b, 0x10187da7, 0xe89c636e, 0xdb3bbb7b, 0xcd267809, 0x6e5918f4, 0xec9ab701, 0x834f9aa8, 0xe6956e65, 0xaaffe67e, 0x21bccf08, 0xef15e8e6, 0xbae79bd9, 0x4a6f36ce, 0xea9f09d4, 0x29b07cd6, 0x31a4b2af, 0x2a3f2331, 0xc6a59430, 0x35a266c0, 0x744ebc37, 0xfc82caa6, 0xe090d0b0, 0x33a7d815, 0xf104984a, 0x41ecdaf7, 0x7fcd500e, 0x1791f62f, 0x764dd68d, 0x43efb04d, 0xccaa4d54, 0xe49604df, 0x9ed1b5e3, 0x4c6a881b, 0xc12c1fb8, 0x4665517f, 0x9d5eea04, 0x018c355d, 0xfa877473, 0xfb0b412e, 0xb3671d5a, 0x92dbd252, 0xe9105633, 0x6dd64713, 0x9ad7618c, 0x37a10c7a, 0x59f8148e, 0xeb133c89, 0xcea927ee, 0xb761c935, 0xe11ce5ed, 0x7a47b13c, 0x9cd2df59, 0x55f2733f, 0x1814ce79, 0x73c737bf, 0x53f7cdea, 0x5ffdaa5b, 0xdf3d6f14, 0x7844db86, 0xcaaff381, 0xb968c43e, 0x3824342c, 0xc2a3405f, 0x161dc372, 0xbce2250c, 0x283c498b, 0xff0d9541, 0x39a80171, 0x080cb3de, 0xd8b4e49c, 0x6456c190, 0x7bcb8461, 0xd532b670, 0x486c5c74, 0xd0b85742]; + var T6 = [0x5051f4a7, 0x537e4165, 0xc31a17a4, 0x963a275e, 0xcb3bab6b, 0xf11f9d45, 0xabacfa58, 0x934be303, 0x552030fa, 0xf6ad766d, 0x9188cc76, 0x25f5024c, 0xfc4fe5d7, 0xd7c52acb, 0x80263544, 0x8fb562a3, 0x49deb15a, 0x6725ba1b, 0x9845ea0e, 0xe15dfec0, 0x02c32f75, 0x12814cf0, 0xa38d4697, 0xc66bd3f9, 0xe7038f5f, 0x9515929c, 0xebbf6d7a, 0xda955259, 0x2dd4be83, 0xd3587421, 0x2949e069, 0x448ec9c8, 0x6a75c289, 0x78f48e79, 0x6b99583e, 0xdd27b971, 0xb6bee14f, 0x17f088ad, 0x66c920ac, 0xb47dce3a, 0x1863df4a, 0x82e51a31, 0x60975133, 0x4562537f, 0xe0b16477, 0x84bb6bae, 0x1cfe81a0, 0x94f9082b, 0x58704868, 0x198f45fd, 0x8794de6c, 0xb7527bf8, 0x23ab73d3, 0xe2724b02, 0x57e31f8f, 0x2a6655ab, 0x07b2eb28, 0x032fb5c2, 0x9a86c57b, 0xa5d33708, 0xf2302887, 0xb223bfa5, 0xba02036a, 0x5ced1682, 0x2b8acf1c, 0x92a779b4, 0xf0f307f2, 0xa14e69e2, 0xcd65daf4, 0xd50605be, 0x1fd13462, 0x8ac4a6fe, 0x9d342e53, 0xa0a2f355, 0x32058ae1, 0x75a4f6eb, 0x390b83ec, 0xaa4060ef, 0x065e719f, 0x51bd6e10, 0xf93e218a, 0x3d96dd06, 0xaedd3e05, 0x464de6bd, 0xb591548d, 0x0571c45d, 0x6f0406d4, 0xff605015, 0x241998fb, 0x97d6bde9, 0xcc894043, 0x7767d99e, 0xbdb0e842, 0x8807898b, 0x38e7195b, 0xdb79c8ee, 0x47a17c0a, 0xe97c420f, 0xc9f8841e, 0x00000000, 0x83098086, 0x48322bed, 0xac1e1170, 0x4e6c5a72, 0xfbfd0eff, 0x560f8538, 0x1e3daed5, 0x27362d39, 0x640a0fd9, 0x21685ca6, 0xd19b5b54, 0x3a24362e, 0xb10c0a67, 0x0f9357e7, 0xd2b4ee96, 0x9e1b9b91, 0x4f80c0c5, 0xa261dc20, 0x695a774b, 0x161c121a, 0x0ae293ba, 0xe5c0a02a, 0x433c22e0, 0x1d121b17, 0x0b0e090d, 0xadf28bc7, 0xb92db6a8, 0xc8141ea9, 0x8557f119, 0x4caf7507, 0xbbee99dd, 0xfda37f60, 0x9ff70126, 0xbc5c72f5, 0xc544663b, 0x345bfb7e, 0x768b4329, 0xdccb23c6, 0x68b6edfc, 0x63b8e4f1, 0xcad731dc, 0x10426385, 0x40139722, 0x2084c611, 0x7d854a24, 0xf8d2bb3d, 0x11aef932, 0x6dc729a1, 0x4b1d9e2f, 0xf3dcb230, 0xec0d8652, 0xd077c1e3, 0x6c2bb316, 0x99a970b9, 0xfa119448, 0x2247e964, 0xc4a8fc8c, 0x1aa0f03f, 0xd8567d2c, 0xef223390, 0xc787494e, 0xc1d938d1, 0xfe8ccaa2, 0x3698d40b, 0xcfa6f581, 0x28a57ade, 0x26dab78e, 0xa43fadbf, 0xe42c3a9d, 0x0d507892, 0x9b6a5fcc, 0x62547e46, 0xc2f68d13, 0xe890d8b8, 0x5e2e39f7, 0xf582c3af, 0xbe9f5d80, 0x7c69d093, 0xa96fd52d, 0xb3cf2512, 0x3bc8ac99, 0xa710187d, 0x6ee89c63, 0x7bdb3bbb, 0x09cd2678, 0xf46e5918, 0x01ec9ab7, 0xa8834f9a, 0x65e6956e, 0x7eaaffe6, 0x0821bccf, 0xe6ef15e8, 0xd9bae79b, 0xce4a6f36, 0xd4ea9f09, 0xd629b07c, 0xaf31a4b2, 0x312a3f23, 0x30c6a594, 0xc035a266, 0x37744ebc, 0xa6fc82ca, 0xb0e090d0, 0x1533a7d8, 0x4af10498, 0xf741ecda, 0x0e7fcd50, 0x2f1791f6, 0x8d764dd6, 0x4d43efb0, 0x54ccaa4d, 0xdfe49604, 0xe39ed1b5, 0x1b4c6a88, 0xb8c12c1f, 0x7f466551, 0x049d5eea, 0x5d018c35, 0x73fa8774, 0x2efb0b41, 0x5ab3671d, 0x5292dbd2, 0x33e91056, 0x136dd647, 0x8c9ad761, 0x7a37a10c, 0x8e59f814, 0x89eb133c, 0xeecea927, 0x35b761c9, 0xede11ce5, 0x3c7a47b1, 0x599cd2df, 0x3f55f273, 0x791814ce, 0xbf73c737, 0xea53f7cd, 0x5b5ffdaa, 0x14df3d6f, 0x867844db, 0x81caaff3, 0x3eb968c4, 0x2c382434, 0x5fc2a340, 0x72161dc3, 0x0cbce225, 0x8b283c49, 0x41ff0d95, 0x7139a801, 0xde080cb3, 0x9cd8b4e4, 0x906456c1, 0x617bcb84, 0x70d532b6, 0x74486c5c, 0x42d0b857]; + var T7 = [0xa75051f4, 0x65537e41, 0xa4c31a17, 0x5e963a27, 0x6bcb3bab, 0x45f11f9d, 0x58abacfa, 0x03934be3, 0xfa552030, 0x6df6ad76, 0x769188cc, 0x4c25f502, 0xd7fc4fe5, 0xcbd7c52a, 0x44802635, 0xa38fb562, 0x5a49deb1, 0x1b6725ba, 0x0e9845ea, 0xc0e15dfe, 0x7502c32f, 0xf012814c, 0x97a38d46, 0xf9c66bd3, 0x5fe7038f, 0x9c951592, 0x7aebbf6d, 0x59da9552, 0x832dd4be, 0x21d35874, 0x692949e0, 0xc8448ec9, 0x896a75c2, 0x7978f48e, 0x3e6b9958, 0x71dd27b9, 0x4fb6bee1, 0xad17f088, 0xac66c920, 0x3ab47dce, 0x4a1863df, 0x3182e51a, 0x33609751, 0x7f456253, 0x77e0b164, 0xae84bb6b, 0xa01cfe81, 0x2b94f908, 0x68587048, 0xfd198f45, 0x6c8794de, 0xf8b7527b, 0xd323ab73, 0x02e2724b, 0x8f57e31f, 0xab2a6655, 0x2807b2eb, 0xc2032fb5, 0x7b9a86c5, 0x08a5d337, 0x87f23028, 0xa5b223bf, 0x6aba0203, 0x825ced16, 0x1c2b8acf, 0xb492a779, 0xf2f0f307, 0xe2a14e69, 0xf4cd65da, 0xbed50605, 0x621fd134, 0xfe8ac4a6, 0x539d342e, 0x55a0a2f3, 0xe132058a, 0xeb75a4f6, 0xec390b83, 0xefaa4060, 0x9f065e71, 0x1051bd6e, 0x8af93e21, 0x063d96dd, 0x05aedd3e, 0xbd464de6, 0x8db59154, 0x5d0571c4, 0xd46f0406, 0x15ff6050, 0xfb241998, 0xe997d6bd, 0x43cc8940, 0x9e7767d9, 0x42bdb0e8, 0x8b880789, 0x5b38e719, 0xeedb79c8, 0x0a47a17c, 0x0fe97c42, 0x1ec9f884, 0x00000000, 0x86830980, 0xed48322b, 0x70ac1e11, 0x724e6c5a, 0xfffbfd0e, 0x38560f85, 0xd51e3dae, 0x3927362d, 0xd9640a0f, 0xa621685c, 0x54d19b5b, 0x2e3a2436, 0x67b10c0a, 0xe70f9357, 0x96d2b4ee, 0x919e1b9b, 0xc54f80c0, 0x20a261dc, 0x4b695a77, 0x1a161c12, 0xba0ae293, 0x2ae5c0a0, 0xe0433c22, 0x171d121b, 0x0d0b0e09, 0xc7adf28b, 0xa8b92db6, 0xa9c8141e, 0x198557f1, 0x074caf75, 0xddbbee99, 0x60fda37f, 0x269ff701, 0xf5bc5c72, 0x3bc54466, 0x7e345bfb, 0x29768b43, 0xc6dccb23, 0xfc68b6ed, 0xf163b8e4, 0xdccad731, 0x85104263, 0x22401397, 0x112084c6, 0x247d854a, 0x3df8d2bb, 0x3211aef9, 0xa16dc729, 0x2f4b1d9e, 0x30f3dcb2, 0x52ec0d86, 0xe3d077c1, 0x166c2bb3, 0xb999a970, 0x48fa1194, 0x642247e9, 0x8cc4a8fc, 0x3f1aa0f0, 0x2cd8567d, 0x90ef2233, 0x4ec78749, 0xd1c1d938, 0xa2fe8cca, 0x0b3698d4, 0x81cfa6f5, 0xde28a57a, 0x8e26dab7, 0xbfa43fad, 0x9de42c3a, 0x920d5078, 0xcc9b6a5f, 0x4662547e, 0x13c2f68d, 0xb8e890d8, 0xf75e2e39, 0xaff582c3, 0x80be9f5d, 0x937c69d0, 0x2da96fd5, 0x12b3cf25, 0x993bc8ac, 0x7da71018, 0x636ee89c, 0xbb7bdb3b, 0x7809cd26, 0x18f46e59, 0xb701ec9a, 0x9aa8834f, 0x6e65e695, 0xe67eaaff, 0xcf0821bc, 0xe8e6ef15, 0x9bd9bae7, 0x36ce4a6f, 0x09d4ea9f, 0x7cd629b0, 0xb2af31a4, 0x23312a3f, 0x9430c6a5, 0x66c035a2, 0xbc37744e, 0xcaa6fc82, 0xd0b0e090, 0xd81533a7, 0x984af104, 0xdaf741ec, 0x500e7fcd, 0xf62f1791, 0xd68d764d, 0xb04d43ef, 0x4d54ccaa, 0x04dfe496, 0xb5e39ed1, 0x881b4c6a, 0x1fb8c12c, 0x517f4665, 0xea049d5e, 0x355d018c, 0x7473fa87, 0x412efb0b, 0x1d5ab367, 0xd25292db, 0x5633e910, 0x47136dd6, 0x618c9ad7, 0x0c7a37a1, 0x148e59f8, 0x3c89eb13, 0x27eecea9, 0xc935b761, 0xe5ede11c, 0xb13c7a47, 0xdf599cd2, 0x733f55f2, 0xce791814, 0x37bf73c7, 0xcdea53f7, 0xaa5b5ffd, 0x6f14df3d, 0xdb867844, 0xf381caaf, 0xc43eb968, 0x342c3824, 0x405fc2a3, 0xc372161d, 0x250cbce2, 0x498b283c, 0x9541ff0d, 0x017139a8, 0xb3de080c, 0xe49cd8b4, 0xc1906456, 0x84617bcb, 0xb670d532, 0x5c74486c, 0x5742d0b8]; + var T8 = [0xf4a75051, 0x4165537e, 0x17a4c31a, 0x275e963a, 0xab6bcb3b, 0x9d45f11f, 0xfa58abac, 0xe303934b, 0x30fa5520, 0x766df6ad, 0xcc769188, 0x024c25f5, 0xe5d7fc4f, 0x2acbd7c5, 0x35448026, 0x62a38fb5, 0xb15a49de, 0xba1b6725, 0xea0e9845, 0xfec0e15d, 0x2f7502c3, 0x4cf01281, 0x4697a38d, 0xd3f9c66b, 0x8f5fe703, 0x929c9515, 0x6d7aebbf, 0x5259da95, 0xbe832dd4, 0x7421d358, 0xe0692949, 0xc9c8448e, 0xc2896a75, 0x8e7978f4, 0x583e6b99, 0xb971dd27, 0xe14fb6be, 0x88ad17f0, 0x20ac66c9, 0xce3ab47d, 0xdf4a1863, 0x1a3182e5, 0x51336097, 0x537f4562, 0x6477e0b1, 0x6bae84bb, 0x81a01cfe, 0x082b94f9, 0x48685870, 0x45fd198f, 0xde6c8794, 0x7bf8b752, 0x73d323ab, 0x4b02e272, 0x1f8f57e3, 0x55ab2a66, 0xeb2807b2, 0xb5c2032f, 0xc57b9a86, 0x3708a5d3, 0x2887f230, 0xbfa5b223, 0x036aba02, 0x16825ced, 0xcf1c2b8a, 0x79b492a7, 0x07f2f0f3, 0x69e2a14e, 0xdaf4cd65, 0x05bed506, 0x34621fd1, 0xa6fe8ac4, 0x2e539d34, 0xf355a0a2, 0x8ae13205, 0xf6eb75a4, 0x83ec390b, 0x60efaa40, 0x719f065e, 0x6e1051bd, 0x218af93e, 0xdd063d96, 0x3e05aedd, 0xe6bd464d, 0x548db591, 0xc45d0571, 0x06d46f04, 0x5015ff60, 0x98fb2419, 0xbde997d6, 0x4043cc89, 0xd99e7767, 0xe842bdb0, 0x898b8807, 0x195b38e7, 0xc8eedb79, 0x7c0a47a1, 0x420fe97c, 0x841ec9f8, 0x00000000, 0x80868309, 0x2bed4832, 0x1170ac1e, 0x5a724e6c, 0x0efffbfd, 0x8538560f, 0xaed51e3d, 0x2d392736, 0x0fd9640a, 0x5ca62168, 0x5b54d19b, 0x362e3a24, 0x0a67b10c, 0x57e70f93, 0xee96d2b4, 0x9b919e1b, 0xc0c54f80, 0xdc20a261, 0x774b695a, 0x121a161c, 0x93ba0ae2, 0xa02ae5c0, 0x22e0433c, 0x1b171d12, 0x090d0b0e, 0x8bc7adf2, 0xb6a8b92d, 0x1ea9c814, 0xf1198557, 0x75074caf, 0x99ddbbee, 0x7f60fda3, 0x01269ff7, 0x72f5bc5c, 0x663bc544, 0xfb7e345b, 0x4329768b, 0x23c6dccb, 0xedfc68b6, 0xe4f163b8, 0x31dccad7, 0x63851042, 0x97224013, 0xc6112084, 0x4a247d85, 0xbb3df8d2, 0xf93211ae, 0x29a16dc7, 0x9e2f4b1d, 0xb230f3dc, 0x8652ec0d, 0xc1e3d077, 0xb3166c2b, 0x70b999a9, 0x9448fa11, 0xe9642247, 0xfc8cc4a8, 0xf03f1aa0, 0x7d2cd856, 0x3390ef22, 0x494ec787, 0x38d1c1d9, 0xcaa2fe8c, 0xd40b3698, 0xf581cfa6, 0x7ade28a5, 0xb78e26da, 0xadbfa43f, 0x3a9de42c, 0x78920d50, 0x5fcc9b6a, 0x7e466254, 0x8d13c2f6, 0xd8b8e890, 0x39f75e2e, 0xc3aff582, 0x5d80be9f, 0xd0937c69, 0xd52da96f, 0x2512b3cf, 0xac993bc8, 0x187da710, 0x9c636ee8, 0x3bbb7bdb, 0x267809cd, 0x5918f46e, 0x9ab701ec, 0x4f9aa883, 0x956e65e6, 0xffe67eaa, 0xbccf0821, 0x15e8e6ef, 0xe79bd9ba, 0x6f36ce4a, 0x9f09d4ea, 0xb07cd629, 0xa4b2af31, 0x3f23312a, 0xa59430c6, 0xa266c035, 0x4ebc3774, 0x82caa6fc, 0x90d0b0e0, 0xa7d81533, 0x04984af1, 0xecdaf741, 0xcd500e7f, 0x91f62f17, 0x4dd68d76, 0xefb04d43, 0xaa4d54cc, 0x9604dfe4, 0xd1b5e39e, 0x6a881b4c, 0x2c1fb8c1, 0x65517f46, 0x5eea049d, 0x8c355d01, 0x877473fa, 0x0b412efb, 0x671d5ab3, 0xdbd25292, 0x105633e9, 0xd647136d, 0xd7618c9a, 0xa10c7a37, 0xf8148e59, 0x133c89eb, 0xa927eece, 0x61c935b7, 0x1ce5ede1, 0x47b13c7a, 0xd2df599c, 0xf2733f55, 0x14ce7918, 0xc737bf73, 0xf7cdea53, 0xfdaa5b5f, 0x3d6f14df, 0x44db8678, 0xaff381ca, 0x68c43eb9, 0x24342c38, 0xa3405fc2, 0x1dc37216, 0xe2250cbc, 0x3c498b28, 0x0d9541ff, 0xa8017139, 0x0cb3de08, 0xb4e49cd8, 0x56c19064, 0xcb84617b, 0x32b670d5, 0x6c5c7448, 0xb85742d0]; + + // Transformations for decryption key expansion + var U1 = [0x00000000, 0x0e090d0b, 0x1c121a16, 0x121b171d, 0x3824342c, 0x362d3927, 0x24362e3a, 0x2a3f2331, 0x70486858, 0x7e416553, 0x6c5a724e, 0x62537f45, 0x486c5c74, 0x4665517f, 0x547e4662, 0x5a774b69, 0xe090d0b0, 0xee99ddbb, 0xfc82caa6, 0xf28bc7ad, 0xd8b4e49c, 0xd6bde997, 0xc4a6fe8a, 0xcaaff381, 0x90d8b8e8, 0x9ed1b5e3, 0x8ccaa2fe, 0x82c3aff5, 0xa8fc8cc4, 0xa6f581cf, 0xb4ee96d2, 0xbae79bd9, 0xdb3bbb7b, 0xd532b670, 0xc729a16d, 0xc920ac66, 0xe31f8f57, 0xed16825c, 0xff0d9541, 0xf104984a, 0xab73d323, 0xa57ade28, 0xb761c935, 0xb968c43e, 0x9357e70f, 0x9d5eea04, 0x8f45fd19, 0x814cf012, 0x3bab6bcb, 0x35a266c0, 0x27b971dd, 0x29b07cd6, 0x038f5fe7, 0x0d8652ec, 0x1f9d45f1, 0x119448fa, 0x4be30393, 0x45ea0e98, 0x57f11985, 0x59f8148e, 0x73c737bf, 0x7dce3ab4, 0x6fd52da9, 0x61dc20a2, 0xad766df6, 0xa37f60fd, 0xb16477e0, 0xbf6d7aeb, 0x955259da, 0x9b5b54d1, 0x894043cc, 0x87494ec7, 0xdd3e05ae, 0xd33708a5, 0xc12c1fb8, 0xcf2512b3, 0xe51a3182, 0xeb133c89, 0xf9082b94, 0xf701269f, 0x4de6bd46, 0x43efb04d, 0x51f4a750, 0x5ffdaa5b, 0x75c2896a, 0x7bcb8461, 0x69d0937c, 0x67d99e77, 0x3daed51e, 0x33a7d815, 0x21bccf08, 0x2fb5c203, 0x058ae132, 0x0b83ec39, 0x1998fb24, 0x1791f62f, 0x764dd68d, 0x7844db86, 0x6a5fcc9b, 0x6456c190, 0x4e69e2a1, 0x4060efaa, 0x527bf8b7, 0x5c72f5bc, 0x0605bed5, 0x080cb3de, 0x1a17a4c3, 0x141ea9c8, 0x3e218af9, 0x302887f2, 0x223390ef, 0x2c3a9de4, 0x96dd063d, 0x98d40b36, 0x8acf1c2b, 0x84c61120, 0xaef93211, 0xa0f03f1a, 0xb2eb2807, 0xbce2250c, 0xe6956e65, 0xe89c636e, 0xfa877473, 0xf48e7978, 0xdeb15a49, 0xd0b85742, 0xc2a3405f, 0xccaa4d54, 0x41ecdaf7, 0x4fe5d7fc, 0x5dfec0e1, 0x53f7cdea, 0x79c8eedb, 0x77c1e3d0, 0x65daf4cd, 0x6bd3f9c6, 0x31a4b2af, 0x3fadbfa4, 0x2db6a8b9, 0x23bfa5b2, 0x09808683, 0x07898b88, 0x15929c95, 0x1b9b919e, 0xa17c0a47, 0xaf75074c, 0xbd6e1051, 0xb3671d5a, 0x99583e6b, 0x97513360, 0x854a247d, 0x8b432976, 0xd134621f, 0xdf3d6f14, 0xcd267809, 0xc32f7502, 0xe9105633, 0xe7195b38, 0xf5024c25, 0xfb0b412e, 0x9ad7618c, 0x94de6c87, 0x86c57b9a, 0x88cc7691, 0xa2f355a0, 0xacfa58ab, 0xbee14fb6, 0xb0e842bd, 0xea9f09d4, 0xe49604df, 0xf68d13c2, 0xf8841ec9, 0xd2bb3df8, 0xdcb230f3, 0xcea927ee, 0xc0a02ae5, 0x7a47b13c, 0x744ebc37, 0x6655ab2a, 0x685ca621, 0x42638510, 0x4c6a881b, 0x5e719f06, 0x5078920d, 0x0a0fd964, 0x0406d46f, 0x161dc372, 0x1814ce79, 0x322bed48, 0x3c22e043, 0x2e39f75e, 0x2030fa55, 0xec9ab701, 0xe293ba0a, 0xf088ad17, 0xfe81a01c, 0xd4be832d, 0xdab78e26, 0xc8ac993b, 0xc6a59430, 0x9cd2df59, 0x92dbd252, 0x80c0c54f, 0x8ec9c844, 0xa4f6eb75, 0xaaffe67e, 0xb8e4f163, 0xb6edfc68, 0x0c0a67b1, 0x02036aba, 0x10187da7, 0x1e1170ac, 0x342e539d, 0x3a275e96, 0x283c498b, 0x26354480, 0x7c420fe9, 0x724b02e2, 0x605015ff, 0x6e5918f4, 0x44663bc5, 0x4a6f36ce, 0x587421d3, 0x567d2cd8, 0x37a10c7a, 0x39a80171, 0x2bb3166c, 0x25ba1b67, 0x0f853856, 0x018c355d, 0x13972240, 0x1d9e2f4b, 0x47e96422, 0x49e06929, 0x5bfb7e34, 0x55f2733f, 0x7fcd500e, 0x71c45d05, 0x63df4a18, 0x6dd64713, 0xd731dcca, 0xd938d1c1, 0xcb23c6dc, 0xc52acbd7, 0xef15e8e6, 0xe11ce5ed, 0xf307f2f0, 0xfd0efffb, 0xa779b492, 0xa970b999, 0xbb6bae84, 0xb562a38f, 0x9f5d80be, 0x91548db5, 0x834f9aa8, 0x8d4697a3]; + var U2 = [0x00000000, 0x0b0e090d, 0x161c121a, 0x1d121b17, 0x2c382434, 0x27362d39, 0x3a24362e, 0x312a3f23, 0x58704868, 0x537e4165, 0x4e6c5a72, 0x4562537f, 0x74486c5c, 0x7f466551, 0x62547e46, 0x695a774b, 0xb0e090d0, 0xbbee99dd, 0xa6fc82ca, 0xadf28bc7, 0x9cd8b4e4, 0x97d6bde9, 0x8ac4a6fe, 0x81caaff3, 0xe890d8b8, 0xe39ed1b5, 0xfe8ccaa2, 0xf582c3af, 0xc4a8fc8c, 0xcfa6f581, 0xd2b4ee96, 0xd9bae79b, 0x7bdb3bbb, 0x70d532b6, 0x6dc729a1, 0x66c920ac, 0x57e31f8f, 0x5ced1682, 0x41ff0d95, 0x4af10498, 0x23ab73d3, 0x28a57ade, 0x35b761c9, 0x3eb968c4, 0x0f9357e7, 0x049d5eea, 0x198f45fd, 0x12814cf0, 0xcb3bab6b, 0xc035a266, 0xdd27b971, 0xd629b07c, 0xe7038f5f, 0xec0d8652, 0xf11f9d45, 0xfa119448, 0x934be303, 0x9845ea0e, 0x8557f119, 0x8e59f814, 0xbf73c737, 0xb47dce3a, 0xa96fd52d, 0xa261dc20, 0xf6ad766d, 0xfda37f60, 0xe0b16477, 0xebbf6d7a, 0xda955259, 0xd19b5b54, 0xcc894043, 0xc787494e, 0xaedd3e05, 0xa5d33708, 0xb8c12c1f, 0xb3cf2512, 0x82e51a31, 0x89eb133c, 0x94f9082b, 0x9ff70126, 0x464de6bd, 0x4d43efb0, 0x5051f4a7, 0x5b5ffdaa, 0x6a75c289, 0x617bcb84, 0x7c69d093, 0x7767d99e, 0x1e3daed5, 0x1533a7d8, 0x0821bccf, 0x032fb5c2, 0x32058ae1, 0x390b83ec, 0x241998fb, 0x2f1791f6, 0x8d764dd6, 0x867844db, 0x9b6a5fcc, 0x906456c1, 0xa14e69e2, 0xaa4060ef, 0xb7527bf8, 0xbc5c72f5, 0xd50605be, 0xde080cb3, 0xc31a17a4, 0xc8141ea9, 0xf93e218a, 0xf2302887, 0xef223390, 0xe42c3a9d, 0x3d96dd06, 0x3698d40b, 0x2b8acf1c, 0x2084c611, 0x11aef932, 0x1aa0f03f, 0x07b2eb28, 0x0cbce225, 0x65e6956e, 0x6ee89c63, 0x73fa8774, 0x78f48e79, 0x49deb15a, 0x42d0b857, 0x5fc2a340, 0x54ccaa4d, 0xf741ecda, 0xfc4fe5d7, 0xe15dfec0, 0xea53f7cd, 0xdb79c8ee, 0xd077c1e3, 0xcd65daf4, 0xc66bd3f9, 0xaf31a4b2, 0xa43fadbf, 0xb92db6a8, 0xb223bfa5, 0x83098086, 0x8807898b, 0x9515929c, 0x9e1b9b91, 0x47a17c0a, 0x4caf7507, 0x51bd6e10, 0x5ab3671d, 0x6b99583e, 0x60975133, 0x7d854a24, 0x768b4329, 0x1fd13462, 0x14df3d6f, 0x09cd2678, 0x02c32f75, 0x33e91056, 0x38e7195b, 0x25f5024c, 0x2efb0b41, 0x8c9ad761, 0x8794de6c, 0x9a86c57b, 0x9188cc76, 0xa0a2f355, 0xabacfa58, 0xb6bee14f, 0xbdb0e842, 0xd4ea9f09, 0xdfe49604, 0xc2f68d13, 0xc9f8841e, 0xf8d2bb3d, 0xf3dcb230, 0xeecea927, 0xe5c0a02a, 0x3c7a47b1, 0x37744ebc, 0x2a6655ab, 0x21685ca6, 0x10426385, 0x1b4c6a88, 0x065e719f, 0x0d507892, 0x640a0fd9, 0x6f0406d4, 0x72161dc3, 0x791814ce, 0x48322bed, 0x433c22e0, 0x5e2e39f7, 0x552030fa, 0x01ec9ab7, 0x0ae293ba, 0x17f088ad, 0x1cfe81a0, 0x2dd4be83, 0x26dab78e, 0x3bc8ac99, 0x30c6a594, 0x599cd2df, 0x5292dbd2, 0x4f80c0c5, 0x448ec9c8, 0x75a4f6eb, 0x7eaaffe6, 0x63b8e4f1, 0x68b6edfc, 0xb10c0a67, 0xba02036a, 0xa710187d, 0xac1e1170, 0x9d342e53, 0x963a275e, 0x8b283c49, 0x80263544, 0xe97c420f, 0xe2724b02, 0xff605015, 0xf46e5918, 0xc544663b, 0xce4a6f36, 0xd3587421, 0xd8567d2c, 0x7a37a10c, 0x7139a801, 0x6c2bb316, 0x6725ba1b, 0x560f8538, 0x5d018c35, 0x40139722, 0x4b1d9e2f, 0x2247e964, 0x2949e069, 0x345bfb7e, 0x3f55f273, 0x0e7fcd50, 0x0571c45d, 0x1863df4a, 0x136dd647, 0xcad731dc, 0xc1d938d1, 0xdccb23c6, 0xd7c52acb, 0xe6ef15e8, 0xede11ce5, 0xf0f307f2, 0xfbfd0eff, 0x92a779b4, 0x99a970b9, 0x84bb6bae, 0x8fb562a3, 0xbe9f5d80, 0xb591548d, 0xa8834f9a, 0xa38d4697]; + var U3 = [0x00000000, 0x0d0b0e09, 0x1a161c12, 0x171d121b, 0x342c3824, 0x3927362d, 0x2e3a2436, 0x23312a3f, 0x68587048, 0x65537e41, 0x724e6c5a, 0x7f456253, 0x5c74486c, 0x517f4665, 0x4662547e, 0x4b695a77, 0xd0b0e090, 0xddbbee99, 0xcaa6fc82, 0xc7adf28b, 0xe49cd8b4, 0xe997d6bd, 0xfe8ac4a6, 0xf381caaf, 0xb8e890d8, 0xb5e39ed1, 0xa2fe8cca, 0xaff582c3, 0x8cc4a8fc, 0x81cfa6f5, 0x96d2b4ee, 0x9bd9bae7, 0xbb7bdb3b, 0xb670d532, 0xa16dc729, 0xac66c920, 0x8f57e31f, 0x825ced16, 0x9541ff0d, 0x984af104, 0xd323ab73, 0xde28a57a, 0xc935b761, 0xc43eb968, 0xe70f9357, 0xea049d5e, 0xfd198f45, 0xf012814c, 0x6bcb3bab, 0x66c035a2, 0x71dd27b9, 0x7cd629b0, 0x5fe7038f, 0x52ec0d86, 0x45f11f9d, 0x48fa1194, 0x03934be3, 0x0e9845ea, 0x198557f1, 0x148e59f8, 0x37bf73c7, 0x3ab47dce, 0x2da96fd5, 0x20a261dc, 0x6df6ad76, 0x60fda37f, 0x77e0b164, 0x7aebbf6d, 0x59da9552, 0x54d19b5b, 0x43cc8940, 0x4ec78749, 0x05aedd3e, 0x08a5d337, 0x1fb8c12c, 0x12b3cf25, 0x3182e51a, 0x3c89eb13, 0x2b94f908, 0x269ff701, 0xbd464de6, 0xb04d43ef, 0xa75051f4, 0xaa5b5ffd, 0x896a75c2, 0x84617bcb, 0x937c69d0, 0x9e7767d9, 0xd51e3dae, 0xd81533a7, 0xcf0821bc, 0xc2032fb5, 0xe132058a, 0xec390b83, 0xfb241998, 0xf62f1791, 0xd68d764d, 0xdb867844, 0xcc9b6a5f, 0xc1906456, 0xe2a14e69, 0xefaa4060, 0xf8b7527b, 0xf5bc5c72, 0xbed50605, 0xb3de080c, 0xa4c31a17, 0xa9c8141e, 0x8af93e21, 0x87f23028, 0x90ef2233, 0x9de42c3a, 0x063d96dd, 0x0b3698d4, 0x1c2b8acf, 0x112084c6, 0x3211aef9, 0x3f1aa0f0, 0x2807b2eb, 0x250cbce2, 0x6e65e695, 0x636ee89c, 0x7473fa87, 0x7978f48e, 0x5a49deb1, 0x5742d0b8, 0x405fc2a3, 0x4d54ccaa, 0xdaf741ec, 0xd7fc4fe5, 0xc0e15dfe, 0xcdea53f7, 0xeedb79c8, 0xe3d077c1, 0xf4cd65da, 0xf9c66bd3, 0xb2af31a4, 0xbfa43fad, 0xa8b92db6, 0xa5b223bf, 0x86830980, 0x8b880789, 0x9c951592, 0x919e1b9b, 0x0a47a17c, 0x074caf75, 0x1051bd6e, 0x1d5ab367, 0x3e6b9958, 0x33609751, 0x247d854a, 0x29768b43, 0x621fd134, 0x6f14df3d, 0x7809cd26, 0x7502c32f, 0x5633e910, 0x5b38e719, 0x4c25f502, 0x412efb0b, 0x618c9ad7, 0x6c8794de, 0x7b9a86c5, 0x769188cc, 0x55a0a2f3, 0x58abacfa, 0x4fb6bee1, 0x42bdb0e8, 0x09d4ea9f, 0x04dfe496, 0x13c2f68d, 0x1ec9f884, 0x3df8d2bb, 0x30f3dcb2, 0x27eecea9, 0x2ae5c0a0, 0xb13c7a47, 0xbc37744e, 0xab2a6655, 0xa621685c, 0x85104263, 0x881b4c6a, 0x9f065e71, 0x920d5078, 0xd9640a0f, 0xd46f0406, 0xc372161d, 0xce791814, 0xed48322b, 0xe0433c22, 0xf75e2e39, 0xfa552030, 0xb701ec9a, 0xba0ae293, 0xad17f088, 0xa01cfe81, 0x832dd4be, 0x8e26dab7, 0x993bc8ac, 0x9430c6a5, 0xdf599cd2, 0xd25292db, 0xc54f80c0, 0xc8448ec9, 0xeb75a4f6, 0xe67eaaff, 0xf163b8e4, 0xfc68b6ed, 0x67b10c0a, 0x6aba0203, 0x7da71018, 0x70ac1e11, 0x539d342e, 0x5e963a27, 0x498b283c, 0x44802635, 0x0fe97c42, 0x02e2724b, 0x15ff6050, 0x18f46e59, 0x3bc54466, 0x36ce4a6f, 0x21d35874, 0x2cd8567d, 0x0c7a37a1, 0x017139a8, 0x166c2bb3, 0x1b6725ba, 0x38560f85, 0x355d018c, 0x22401397, 0x2f4b1d9e, 0x642247e9, 0x692949e0, 0x7e345bfb, 0x733f55f2, 0x500e7fcd, 0x5d0571c4, 0x4a1863df, 0x47136dd6, 0xdccad731, 0xd1c1d938, 0xc6dccb23, 0xcbd7c52a, 0xe8e6ef15, 0xe5ede11c, 0xf2f0f307, 0xfffbfd0e, 0xb492a779, 0xb999a970, 0xae84bb6b, 0xa38fb562, 0x80be9f5d, 0x8db59154, 0x9aa8834f, 0x97a38d46]; + var U4 = [0x00000000, 0x090d0b0e, 0x121a161c, 0x1b171d12, 0x24342c38, 0x2d392736, 0x362e3a24, 0x3f23312a, 0x48685870, 0x4165537e, 0x5a724e6c, 0x537f4562, 0x6c5c7448, 0x65517f46, 0x7e466254, 0x774b695a, 0x90d0b0e0, 0x99ddbbee, 0x82caa6fc, 0x8bc7adf2, 0xb4e49cd8, 0xbde997d6, 0xa6fe8ac4, 0xaff381ca, 0xd8b8e890, 0xd1b5e39e, 0xcaa2fe8c, 0xc3aff582, 0xfc8cc4a8, 0xf581cfa6, 0xee96d2b4, 0xe79bd9ba, 0x3bbb7bdb, 0x32b670d5, 0x29a16dc7, 0x20ac66c9, 0x1f8f57e3, 0x16825ced, 0x0d9541ff, 0x04984af1, 0x73d323ab, 0x7ade28a5, 0x61c935b7, 0x68c43eb9, 0x57e70f93, 0x5eea049d, 0x45fd198f, 0x4cf01281, 0xab6bcb3b, 0xa266c035, 0xb971dd27, 0xb07cd629, 0x8f5fe703, 0x8652ec0d, 0x9d45f11f, 0x9448fa11, 0xe303934b, 0xea0e9845, 0xf1198557, 0xf8148e59, 0xc737bf73, 0xce3ab47d, 0xd52da96f, 0xdc20a261, 0x766df6ad, 0x7f60fda3, 0x6477e0b1, 0x6d7aebbf, 0x5259da95, 0x5b54d19b, 0x4043cc89, 0x494ec787, 0x3e05aedd, 0x3708a5d3, 0x2c1fb8c1, 0x2512b3cf, 0x1a3182e5, 0x133c89eb, 0x082b94f9, 0x01269ff7, 0xe6bd464d, 0xefb04d43, 0xf4a75051, 0xfdaa5b5f, 0xc2896a75, 0xcb84617b, 0xd0937c69, 0xd99e7767, 0xaed51e3d, 0xa7d81533, 0xbccf0821, 0xb5c2032f, 0x8ae13205, 0x83ec390b, 0x98fb2419, 0x91f62f17, 0x4dd68d76, 0x44db8678, 0x5fcc9b6a, 0x56c19064, 0x69e2a14e, 0x60efaa40, 0x7bf8b752, 0x72f5bc5c, 0x05bed506, 0x0cb3de08, 0x17a4c31a, 0x1ea9c814, 0x218af93e, 0x2887f230, 0x3390ef22, 0x3a9de42c, 0xdd063d96, 0xd40b3698, 0xcf1c2b8a, 0xc6112084, 0xf93211ae, 0xf03f1aa0, 0xeb2807b2, 0xe2250cbc, 0x956e65e6, 0x9c636ee8, 0x877473fa, 0x8e7978f4, 0xb15a49de, 0xb85742d0, 0xa3405fc2, 0xaa4d54cc, 0xecdaf741, 0xe5d7fc4f, 0xfec0e15d, 0xf7cdea53, 0xc8eedb79, 0xc1e3d077, 0xdaf4cd65, 0xd3f9c66b, 0xa4b2af31, 0xadbfa43f, 0xb6a8b92d, 0xbfa5b223, 0x80868309, 0x898b8807, 0x929c9515, 0x9b919e1b, 0x7c0a47a1, 0x75074caf, 0x6e1051bd, 0x671d5ab3, 0x583e6b99, 0x51336097, 0x4a247d85, 0x4329768b, 0x34621fd1, 0x3d6f14df, 0x267809cd, 0x2f7502c3, 0x105633e9, 0x195b38e7, 0x024c25f5, 0x0b412efb, 0xd7618c9a, 0xde6c8794, 0xc57b9a86, 0xcc769188, 0xf355a0a2, 0xfa58abac, 0xe14fb6be, 0xe842bdb0, 0x9f09d4ea, 0x9604dfe4, 0x8d13c2f6, 0x841ec9f8, 0xbb3df8d2, 0xb230f3dc, 0xa927eece, 0xa02ae5c0, 0x47b13c7a, 0x4ebc3774, 0x55ab2a66, 0x5ca62168, 0x63851042, 0x6a881b4c, 0x719f065e, 0x78920d50, 0x0fd9640a, 0x06d46f04, 0x1dc37216, 0x14ce7918, 0x2bed4832, 0x22e0433c, 0x39f75e2e, 0x30fa5520, 0x9ab701ec, 0x93ba0ae2, 0x88ad17f0, 0x81a01cfe, 0xbe832dd4, 0xb78e26da, 0xac993bc8, 0xa59430c6, 0xd2df599c, 0xdbd25292, 0xc0c54f80, 0xc9c8448e, 0xf6eb75a4, 0xffe67eaa, 0xe4f163b8, 0xedfc68b6, 0x0a67b10c, 0x036aba02, 0x187da710, 0x1170ac1e, 0x2e539d34, 0x275e963a, 0x3c498b28, 0x35448026, 0x420fe97c, 0x4b02e272, 0x5015ff60, 0x5918f46e, 0x663bc544, 0x6f36ce4a, 0x7421d358, 0x7d2cd856, 0xa10c7a37, 0xa8017139, 0xb3166c2b, 0xba1b6725, 0x8538560f, 0x8c355d01, 0x97224013, 0x9e2f4b1d, 0xe9642247, 0xe0692949, 0xfb7e345b, 0xf2733f55, 0xcd500e7f, 0xc45d0571, 0xdf4a1863, 0xd647136d, 0x31dccad7, 0x38d1c1d9, 0x23c6dccb, 0x2acbd7c5, 0x15e8e6ef, 0x1ce5ede1, 0x07f2f0f3, 0x0efffbfd, 0x79b492a7, 0x70b999a9, 0x6bae84bb, 0x62a38fb5, 0x5d80be9f, 0x548db591, 0x4f9aa883, 0x4697a38d]; + + function convertToInt32(bytes) { + var result = []; + for (var i = 0; i < bytes.length; i += 4) { + result.push( + (bytes[i ] << 24) | + (bytes[i + 1] << 16) | + (bytes[i + 2] << 8) | + bytes[i + 3] + ); + } + return result; + } + + var AES = function(key) { + if (!(this instanceof AES)) { + throw Error('AES must be instanitated with `new`'); + } + + Object.defineProperty(this, 'key', { + value: coerceArray(key, true) + }); + + this._prepare(); + } + + + AES.prototype._prepare = function() { + + var rounds = numberOfRounds[this.key.length]; + if (rounds == null) { + throw new Error('invalid key size (must be 16, 24 or 32 bytes)'); + } + + // encryption round keys + this._Ke = []; + + // decryption round keys + this._Kd = []; + + for (var i = 0; i <= rounds; i++) { + this._Ke.push([0, 0, 0, 0]); + this._Kd.push([0, 0, 0, 0]); + } + + var roundKeyCount = (rounds + 1) * 4; + var KC = this.key.length / 4; + + // convert the key into ints + var tk = convertToInt32(this.key); + + // copy values into round key arrays + var index; + for (var i = 0; i < KC; i++) { + index = i >> 2; + this._Ke[index][i % 4] = tk[i]; + this._Kd[rounds - index][i % 4] = tk[i]; + } + + // key expansion (fips-197 section 5.2) + var rconpointer = 0; + var t = KC, tt; + while (t < roundKeyCount) { + tt = tk[KC - 1]; + tk[0] ^= ((S[(tt >> 16) & 0xFF] << 24) ^ + (S[(tt >> 8) & 0xFF] << 16) ^ + (S[ tt & 0xFF] << 8) ^ + S[(tt >> 24) & 0xFF] ^ + (rcon[rconpointer] << 24)); + rconpointer += 1; + + // key expansion (for non-256 bit) + if (KC != 8) { + for (var i = 1; i < KC; i++) { + tk[i] ^= tk[i - 1]; + } + + // key expansion for 256-bit keys is "slightly different" (fips-197) + } else { + for (var i = 1; i < (KC / 2); i++) { + tk[i] ^= tk[i - 1]; + } + tt = tk[(KC / 2) - 1]; + + tk[KC / 2] ^= (S[ tt & 0xFF] ^ + (S[(tt >> 8) & 0xFF] << 8) ^ + (S[(tt >> 16) & 0xFF] << 16) ^ + (S[(tt >> 24) & 0xFF] << 24)); + + for (var i = (KC / 2) + 1; i < KC; i++) { + tk[i] ^= tk[i - 1]; + } + } + + // copy values into round key arrays + var i = 0, r, c; + while (i < KC && t < roundKeyCount) { + r = t >> 2; + c = t % 4; + this._Ke[r][c] = tk[i]; + this._Kd[rounds - r][c] = tk[i++]; + t++; + } + } + + // inverse-cipher-ify the decryption round key (fips-197 section 5.3) + for (var r = 1; r < rounds; r++) { + for (var c = 0; c < 4; c++) { + tt = this._Kd[r][c]; + this._Kd[r][c] = (U1[(tt >> 24) & 0xFF] ^ + U2[(tt >> 16) & 0xFF] ^ + U3[(tt >> 8) & 0xFF] ^ + U4[ tt & 0xFF]); + } + } + } + + AES.prototype.encrypt = function(plaintext) { + if (plaintext.length != 16) { + throw new Error('invalid plaintext size (must be 16 bytes)'); + } + + var rounds = this._Ke.length - 1; + var a = [0, 0, 0, 0]; + + // convert plaintext to (ints ^ key) + var t = convertToInt32(plaintext); + for (var i = 0; i < 4; i++) { + t[i] ^= this._Ke[0][i]; + } + + // apply round transforms + for (var r = 1; r < rounds; r++) { + for (var i = 0; i < 4; i++) { + a[i] = (T1[(t[ i ] >> 24) & 0xff] ^ + T2[(t[(i + 1) % 4] >> 16) & 0xff] ^ + T3[(t[(i + 2) % 4] >> 8) & 0xff] ^ + T4[ t[(i + 3) % 4] & 0xff] ^ + this._Ke[r][i]); + } + t = a.slice(); + } + + // the last round is special + var result = createArray(16), tt; + for (var i = 0; i < 4; i++) { + tt = this._Ke[rounds][i]; + result[4 * i ] = (S[(t[ i ] >> 24) & 0xff] ^ (tt >> 24)) & 0xff; + result[4 * i + 1] = (S[(t[(i + 1) % 4] >> 16) & 0xff] ^ (tt >> 16)) & 0xff; + result[4 * i + 2] = (S[(t[(i + 2) % 4] >> 8) & 0xff] ^ (tt >> 8)) & 0xff; + result[4 * i + 3] = (S[ t[(i + 3) % 4] & 0xff] ^ tt ) & 0xff; + } + + return result; + } + + AES.prototype.decrypt = function(ciphertext) { + if (ciphertext.length != 16) { + throw new Error('invalid ciphertext size (must be 16 bytes)'); + } + + var rounds = this._Kd.length - 1; + var a = [0, 0, 0, 0]; + + // convert plaintext to (ints ^ key) + var t = convertToInt32(ciphertext); + for (var i = 0; i < 4; i++) { + t[i] ^= this._Kd[0][i]; + } + + // apply round transforms + for (var r = 1; r < rounds; r++) { + for (var i = 0; i < 4; i++) { + a[i] = (T5[(t[ i ] >> 24) & 0xff] ^ + T6[(t[(i + 3) % 4] >> 16) & 0xff] ^ + T7[(t[(i + 2) % 4] >> 8) & 0xff] ^ + T8[ t[(i + 1) % 4] & 0xff] ^ + this._Kd[r][i]); + } + t = a.slice(); + } + + // the last round is special + var result = createArray(16), tt; + for (var i = 0; i < 4; i++) { + tt = this._Kd[rounds][i]; + result[4 * i ] = (Si[(t[ i ] >> 24) & 0xff] ^ (tt >> 24)) & 0xff; + result[4 * i + 1] = (Si[(t[(i + 3) % 4] >> 16) & 0xff] ^ (tt >> 16)) & 0xff; + result[4 * i + 2] = (Si[(t[(i + 2) % 4] >> 8) & 0xff] ^ (tt >> 8)) & 0xff; + result[4 * i + 3] = (Si[ t[(i + 1) % 4] & 0xff] ^ tt ) & 0xff; + } + + return result; + } + + + /** + * Mode Of Operation - Electonic Codebook (ECB) + */ + var ModeOfOperationECB = function(key) { + if (!(this instanceof ModeOfOperationECB)) { + throw Error('AES must be instanitated with `new`'); + } + + this.description = "Electronic Code Block"; + this.name = "ecb"; + + this._aes = new AES(key); + } + + ModeOfOperationECB.prototype.encrypt = function(plaintext) { + plaintext = coerceArray(plaintext); + + if ((plaintext.length % 16) !== 0) { + throw new Error('invalid plaintext size (must be multiple of 16 bytes)'); + } + + var ciphertext = createArray(plaintext.length); + var block = createArray(16); + + for (var i = 0; i < plaintext.length; i += 16) { + copyArray(plaintext, block, 0, i, i + 16); + block = this._aes.encrypt(block); + copyArray(block, ciphertext, i); + } + + return ciphertext; + } + + ModeOfOperationECB.prototype.decrypt = function(ciphertext) { + ciphertext = coerceArray(ciphertext); + + if ((ciphertext.length % 16) !== 0) { + throw new Error('invalid ciphertext size (must be multiple of 16 bytes)'); + } + + var plaintext = createArray(ciphertext.length); + var block = createArray(16); + + for (var i = 0; i < ciphertext.length; i += 16) { + copyArray(ciphertext, block, 0, i, i + 16); + block = this._aes.decrypt(block); + copyArray(block, plaintext, i); + } + + return plaintext; + } + + + /** + * Mode Of Operation - Cipher Block Chaining (CBC) + */ + var ModeOfOperationCBC = function(key, iv) { + if (!(this instanceof ModeOfOperationCBC)) { + throw Error('AES must be instanitated with `new`'); + } + + this.description = "Cipher Block Chaining"; + this.name = "cbc"; + + if (!iv) { + iv = createArray(16); + + } else if (iv.length != 16) { + throw new Error('invalid initialation vector size (must be 16 bytes)'); + } + + this._lastCipherblock = coerceArray(iv, true); + + this._aes = new AES(key); + } + + ModeOfOperationCBC.prototype.encrypt = function(plaintext) { + plaintext = coerceArray(plaintext); + + if ((plaintext.length % 16) !== 0) { + throw new Error('invalid plaintext size (must be multiple of 16 bytes)'); + } + + var ciphertext = createArray(plaintext.length); + var block = createArray(16); + + for (var i = 0; i < plaintext.length; i += 16) { + copyArray(plaintext, block, 0, i, i + 16); + + for (var j = 0; j < 16; j++) { + block[j] ^= this._lastCipherblock[j]; + } + + this._lastCipherblock = this._aes.encrypt(block); + copyArray(this._lastCipherblock, ciphertext, i); + } + + return ciphertext; + } + + ModeOfOperationCBC.prototype.decrypt = function(ciphertext) { + ciphertext = coerceArray(ciphertext); + + if ((ciphertext.length % 16) !== 0) { + throw new Error('invalid ciphertext size (must be multiple of 16 bytes)'); + } + + var plaintext = createArray(ciphertext.length); + var block = createArray(16); + + for (var i = 0; i < ciphertext.length; i += 16) { + copyArray(ciphertext, block, 0, i, i + 16); + block = this._aes.decrypt(block); + + for (var j = 0; j < 16; j++) { + plaintext[i + j] = block[j] ^ this._lastCipherblock[j]; + } + + copyArray(ciphertext, this._lastCipherblock, 0, i, i + 16); + } + + return plaintext; + } + + + /** + * Mode Of Operation - Cipher Feedback (CFB) + */ + var ModeOfOperationCFB = function(key, iv, segmentSize) { + if (!(this instanceof ModeOfOperationCFB)) { + throw Error('AES must be instanitated with `new`'); + } + + this.description = "Cipher Feedback"; + this.name = "cfb"; + + if (!iv) { + iv = createArray(16); + + } else if (iv.length != 16) { + throw new Error('invalid initialation vector size (must be 16 size)'); + } + + if (!segmentSize) { segmentSize = 1; } + + this.segmentSize = segmentSize; + + this._shiftRegister = coerceArray(iv, true); + + this._aes = new AES(key); + } + + ModeOfOperationCFB.prototype.encrypt = function(plaintext) { + if ((plaintext.length % this.segmentSize) != 0) { + throw new Error('invalid plaintext size (must be segmentSize bytes)'); + } + + var encrypted = coerceArray(plaintext, true); + + var xorSegment; + for (var i = 0; i < encrypted.length; i += this.segmentSize) { + xorSegment = this._aes.encrypt(this._shiftRegister); + for (var j = 0; j < this.segmentSize; j++) { + encrypted[i + j] ^= xorSegment[j]; + } + + // Shift the register + copyArray(this._shiftRegister, this._shiftRegister, 0, this.segmentSize); + copyArray(encrypted, this._shiftRegister, 16 - this.segmentSize, i, i + this.segmentSize); + } + + return encrypted; + } + + ModeOfOperationCFB.prototype.decrypt = function(ciphertext) { + if ((ciphertext.length % this.segmentSize) != 0) { + throw new Error('invalid ciphertext size (must be segmentSize bytes)'); + } + + var plaintext = coerceArray(ciphertext, true); + + var xorSegment; + for (var i = 0; i < plaintext.length; i += this.segmentSize) { + xorSegment = this._aes.encrypt(this._shiftRegister); + + for (var j = 0; j < this.segmentSize; j++) { + plaintext[i + j] ^= xorSegment[j]; + } + + // Shift the register + copyArray(this._shiftRegister, this._shiftRegister, 0, this.segmentSize); + copyArray(ciphertext, this._shiftRegister, 16 - this.segmentSize, i, i + this.segmentSize); + } + + return plaintext; + } + + /** + * Mode Of Operation - Output Feedback (OFB) + */ + var ModeOfOperationOFB = function(key, iv) { + if (!(this instanceof ModeOfOperationOFB)) { + throw Error('AES must be instanitated with `new`'); + } + + this.description = "Output Feedback"; + this.name = "ofb"; + + if (!iv) { + iv = createArray(16); + + } else if (iv.length != 16) { + throw new Error('invalid initialation vector size (must be 16 bytes)'); + } + + this._lastPrecipher = coerceArray(iv, true); + this._lastPrecipherIndex = 16; + + this._aes = new AES(key); + } + + ModeOfOperationOFB.prototype.encrypt = function(plaintext) { + var encrypted = coerceArray(plaintext, true); + + for (var i = 0; i < encrypted.length; i++) { + if (this._lastPrecipherIndex === 16) { + this._lastPrecipher = this._aes.encrypt(this._lastPrecipher); + this._lastPrecipherIndex = 0; + } + encrypted[i] ^= this._lastPrecipher[this._lastPrecipherIndex++]; + } + + return encrypted; + } + + // Decryption is symetric + ModeOfOperationOFB.prototype.decrypt = ModeOfOperationOFB.prototype.encrypt; + + + /** + * Counter object for CTR common mode of operation + */ + var Counter = function(initialValue) { + if (!(this instanceof Counter)) { + throw Error('Counter must be instanitated with `new`'); + } + + // We allow 0, but anything false-ish uses the default 1 + if (initialValue !== 0 && !initialValue) { initialValue = 1; } + + if (typeof(initialValue) === 'number') { + this._counter = createArray(16); + this.setValue(initialValue); + + } else { + this.setBytes(initialValue); + } + } + + Counter.prototype.setValue = function(value) { + if (typeof(value) !== 'number' || parseInt(value) != value) { + throw new Error('invalid counter value (must be an integer)'); + } + + // We cannot safely handle numbers beyond the safe range for integers + if (value > Number.MAX_SAFE_INTEGER) { + throw new Error('integer value out of safe range'); + } + + for (var index = 15; index >= 0; --index) { + this._counter[index] = value % 256; + value = parseInt(value / 256); + } + } + + Counter.prototype.setBytes = function(bytes) { + bytes = coerceArray(bytes, true); + + if (bytes.length != 16) { + throw new Error('invalid counter bytes size (must be 16 bytes)'); + } + + this._counter = bytes; + }; + + Counter.prototype.increment = function() { + for (var i = 15; i >= 0; i--) { + if (this._counter[i] === 255) { + this._counter[i] = 0; + } else { + this._counter[i]++; + break; + } + } + } + + + /** + * Mode Of Operation - Counter (CTR) + */ + var ModeOfOperationCTR = function(key, counter) { + if (!(this instanceof ModeOfOperationCTR)) { + throw Error('AES must be instanitated with `new`'); + } + + this.description = "Counter"; + this.name = "ctr"; + + if (!(counter instanceof Counter)) { + counter = new Counter(counter) + } + + this._counter = counter; + + this._remainingCounter = null; + this._remainingCounterIndex = 16; + + this._aes = new AES(key); + } + + ModeOfOperationCTR.prototype.encrypt = function(plaintext) { + var encrypted = coerceArray(plaintext, true); + + for (var i = 0; i < encrypted.length; i++) { + if (this._remainingCounterIndex === 16) { + this._remainingCounter = this._aes.encrypt(this._counter._counter); + this._remainingCounterIndex = 0; + this._counter.increment(); + } + encrypted[i] ^= this._remainingCounter[this._remainingCounterIndex++]; + } + + return encrypted; + } + + // Decryption is symetric + ModeOfOperationCTR.prototype.decrypt = ModeOfOperationCTR.prototype.encrypt; + + + /////////////////////// + // Padding + + // See:https://tools.ietf.org/html/rfc2315 + function pkcs7pad(data) { + data = coerceArray(data, true); + var padder = 16 - (data.length % 16); + var result = createArray(data.length + padder); + copyArray(data, result); + for (var i = data.length; i < result.length; i++) { + result[i] = padder; + } + return result; + } + + function pkcs7strip(data) { + data = coerceArray(data, true); + if (data.length < 16) { throw new Error('PKCS#7 invalid length'); } + + var padder = data[data.length - 1]; + if (padder > 16) { throw new Error('PKCS#7 padding byte out of range'); } + + var length = data.length - padder; + for (var i = 0; i < padder; i++) { + if (data[length + i] !== padder) { + throw new Error('PKCS#7 invalid padding byte'); + } + } + + var result = createArray(length); + copyArray(data, result, 0, 0, length); + return result; + } + + /////////////////////// + // Exporting + + + // The block cipher + var aesjs = { + AES: AES, + Counter: Counter, + + ModeOfOperation: { + ecb: ModeOfOperationECB, + cbc: ModeOfOperationCBC, + cfb: ModeOfOperationCFB, + ofb: ModeOfOperationOFB, + ctr: ModeOfOperationCTR + }, + + utils: { + hex: convertHex, + utf8: convertUtf8 + }, + + padding: { + pkcs7: { + pad: pkcs7pad, + strip: pkcs7strip + } + }, + + _arrayTest: { + coerceArray: coerceArray, + createArray: createArray, + copyArray: copyArray, + } + }; + + + // node.js + if (typeof exports !== 'undefined') { + module.exports = aesjs + + // RequireJS/AMD + // http://www.requirejs.org/docs/api.html + // https://github.com/amdjs/amdjs-api/wiki/AMD + } else if (typeof(define) === 'function' && define.amd) { + define(aesjs); + + // Web Browsers + } else { + + // If there was an existing library at "aesjs" make sure it's still available + if (root.aesjs) { + aesjs._aesjs = root.aesjs; + } + + root.aesjs = aesjs; + } + + +})(this); diff --git a/frontend/blogext.css b/frontend/blogext.css new file mode 100644 index 0000000..7b6916c --- /dev/null +++ b/frontend/blogext.css @@ -0,0 +1,65 @@ +span.right{ + display:table-cell; + text-align:right; + white-space:nowrap; + min-width:12em; +} +a.toctarg{ + margin-left:-160px; + padding-left:160px !important; +} +ul#tagslist{ + list-style-type:none; + padding-left:0; +} +ul#tocroot{ + list-style-type:none; + padding-left:24px; +} +ul.tocnode{ + list-style-type:none; + padding-left:16px; +} +span.left{ + display:table-cell; + text-align:left; + text-overflow:ellipsis; + overflow:hidden; + white-space:nowrap; +} +div h3{ + margin: 0.5em 0; +} +#content .block{ + margin: 1em 0; +} +p{ + text-indent:2em; +} +.noindent{ + text-indent:0 !important; +} +note, .note { + vertical-align: super; + font-size: 60%; +} +reduced, .reduced { + font-size: 75%; +} +enlarged, .enlarged { + font-size: 125%; +} +blockquote { + padding: 1em; + margin-left:4em;margin-right:4em; +} +.rightaligned { + text-align: right; +} +.nospace{font-size:0;} +.nospace>span{font-size:16px;} +#decryptdlg{max-width:30%;} +@media (max-width:768px) +{ + #decryptdlg{max-width:90%;} +} diff --git a/frontend/decryptor.js b/frontend/decryptor.js new file mode 100644 index 0000000..c37aa42 --- /dev/null +++ b/frontend/decryptor.js @@ -0,0 +1,84 @@ +//License: Expat(MIT) +//Chrisoft Xiong 2017-2018 +var decid; +function decryptui(id) +{ + document.getElementById("decryptui").style.display="block"; + document.getElementById("keyinp").focus(); + setTimeout(function(){document.getElementById("decryptui").style.opacity="1";},20); + decid=id; + document.getElementById("keyhint").innerHTML="Hint: "+document.querySelector(`encrypted[enid="${id}"]`).getAttribute("hint"); + document.getElementById("keyinp").onkeypress=function(e){if(e.keyCode==13)document.getElementById('btndecrypt').click();} +} +function hidedecryptui() +{ + document.getElementById("decryptui").style.opacity="0"; + setTimeout(function(){ + document.getElementById("decryptui").style.display="none"; + document.getElementById("keyinp").value=""; + },500); +} +function _decrypt(id,ctr) +{ + const aes=aesjs,sha256=Sha256; + const e=document.querySelector(`encrypted[enid="${id}"]`); + const cont=e.getAttribute("encont"); + const bc=atob(cont); + const b=new Array(bc.length); + for(var i=0;i<bc.length;++i)b[i]=bc.charCodeAt(i); + const deccont=ctr.decrypt(b); + const hash=sha256.hash(aes.utils.hex.fromBytes(deccont),{msgFormat:'hex-bytes'}) + if(hash!=e.getAttribute("hash"))return false; + e.innerHTML=aes.utils.utf8.fromBytes(deccont); + e.removeAttribute("encont"); + return true; +} +function _memokey(id,enk) +{ + try + { + const os=localStorage.getItem(`blogkeys${window.location.pathname}`); + const o=os&&os.length?JSON.parse(os):[]; + o[Number(id)]=enk; + localStorage.setItem(`blogkeys${window.location.pathname}`,JSON.stringify(o)); + }catch(e){console.warn(`local storage failed: ${e}`);} +} +async function decryptor(id,key) +{ + const aes=aesjs,sha256=Sha256; + const keyu8=aes.utils.utf8.toBytes(document.getElementById("keyinp").value); + const saltu8=aes.utils.utf8.toBytes('hellwhymustiaddsalttothiscrap'); + const enckey=await new Promise( + (resolv,rej)=> + {scrypt(keyu8,saltu8,1024,16,2,32,(e,p,k)=>{e?rej(e):k?resolv(k):undefined;});} + ); + const ctr=new aes.ModeOfOperation.ctr(enckey); + if(!_decrypt(id,ctr)) + { + alert("The decryption key you have entered could be wrong, please try again."); + return; + } + _memokey(id,enckey); + for(let i of document.querySelectorAll('encrypted[encont]')) + if(_decrypt(i.getAttribute('enid'),ctr))_memokey(i.getAttribute('enid'),enckey); + footnoter();document.getElementById('purgep').style.display=''; + hidedecryptui(); +} +function _purgep() +{ + try{localStorage.removeItem(`blogkeys${window.location.pathname}`);} + catch(e){} + location.reload(true); +} +function _decryptonload() +{ + let o; + try + { + const os=localStorage.getItem(`blogkeys${window.location.pathname}`); + o=os&&os.length?JSON.parse(os):[]; + }catch(e){console.warn(`local storage failed: ${e}`);} + for(let i of o.entries()) + if(i[1]&&i[1].length)_decrypt(Number(i[0]).toString(),new aesjs.ModeOfOperation.ctr(i[1])); + if(o.length){footnoter();document.getElementById('purgep').style.display='';} +} diff --git a/frontend/footnoter.js b/frontend/footnoter.js new file mode 100644 index 0000000..a1b2d8b --- /dev/null +++ b/frontend/footnoter.js @@ -0,0 +1,24 @@ +//License: MIT +//Chrisoft Xiong 2017 +var starting=0; +function footnoter() +{ + var footnotes=document.body.getElementsByTagName("footnote"); + for(var i=0;i<footnotes.length;++i) + { + var s=footnotes[i].innerHTML; + footnotes[i].innerHTML="";//IE is stupid + var a=document.createElement("a"); + a.setAttribute("id","n"+(starting+i+1)); + a.setAttribute("href","#note"+(starting+i+1)); + a.setAttribute("class","note"); + a.innerHTML="["+(starting+i+1)+"]"; + footnotes[i].parentNode.insertBefore(a,footnotes[i]); + var span=document.createElement("span"); + span.setAttribute("class","TText"); + span.innerHTML="<a id=\"note"+(starting+i+1)+"\" href=\"#n"+(starting+i+1)+"\">["+(starting+i+1)+"]</a>: "+s+"<br>"; + document.getElementById("notediv").appendChild(span); + } + starting+=footnotes.length; + while(footnotes.length)footnotes[0].remove(); +} diff --git a/frontend/scrypt.js b/frontend/scrypt.js new file mode 100644 index 0000000..4ab31c8 --- /dev/null +++ b/frontend/scrypt.js @@ -0,0 +1,452 @@ +"use strict"; + +(function(root) { + var MAX_VALUE = 0x7fffffff; + + // The SHA256 and PBKDF2 implementation are from scrypt-async-js: + // See: https://github.com/dchest/scrypt-async-js + function SHA256(m) { + 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 + ]; + + var h0 = 0x6a09e667, h1 = 0xbb67ae85, h2 = 0x3c6ef372, h3 = 0xa54ff53a; + var h4 = 0x510e527f, h5 = 0x9b05688c, h6 = 0x1f83d9ab, h7 = 0x5be0cd19; + var w = new Array(64); + + function blocks(p) { + var off = 0, len = p.length; + while (len >= 64) { + var a = h0, b = h1, c = h2, d = h3, e = h4, f = h5, g = h6, h = h7, u, i, j, t1, t2; + + for (i = 0; i < 16; i++) { + j = off + i*4; + w[i] = ((p[j] & 0xff)<<24) | ((p[j+1] & 0xff)<<16) | + ((p[j+2] & 0xff)<<8) | (p[j+3] & 0xff); + } + + for (i = 16; i < 64; i++) { + u = w[i-2]; + t1 = ((u>>>17) | (u<<(32-17))) ^ ((u>>>19) | (u<<(32-19))) ^ (u>>>10); + + u = w[i-15]; + t2 = ((u>>>7) | (u<<(32-7))) ^ ((u>>>18) | (u<<(32-18))) ^ (u>>>3); + + w[i] = (((t1 + w[i-7]) | 0) + ((t2 + w[i-16]) | 0)) | 0; + } + + for (i = 0; i < 64; i++) { + t1 = ((((((e>>>6) | (e<<(32-6))) ^ ((e>>>11) | (e<<(32-11))) ^ + ((e>>>25) | (e<<(32-25)))) + ((e & f) ^ (~e & g))) | 0) + + ((h + ((K[i] + w[i]) | 0)) | 0)) | 0; + + t2 = ((((a>>>2) | (a<<(32-2))) ^ ((a>>>13) | (a<<(32-13))) ^ + ((a>>>22) | (a<<(32-22)))) + ((a & b) ^ (a & c) ^ (b & c))) | 0; + + h = g; + g = f; + f = e; + e = (d + t1) | 0; + d = c; + c = b; + b = a; + a = (t1 + t2) | 0; + } + + h0 = (h0 + a) | 0; + h1 = (h1 + b) | 0; + h2 = (h2 + c) | 0; + h3 = (h3 + d) | 0; + h4 = (h4 + e) | 0; + h5 = (h5 + f) | 0; + h6 = (h6 + g) | 0; + h7 = (h7 + h) | 0; + + off += 64; + len -= 64; + } + } + + blocks(m); + + var i, bytesLeft = m.length % 64, + bitLenHi = (m.length / 0x20000000) | 0, + bitLenLo = m.length << 3, + numZeros = (bytesLeft < 56) ? 56 : 120, + p = m.slice(m.length - bytesLeft, m.length); + + p.push(0x80); + for (i = bytesLeft + 1; i < numZeros; i++) { p.push(0); } + p.push((bitLenHi>>>24) & 0xff); + p.push((bitLenHi>>>16) & 0xff); + p.push((bitLenHi>>>8) & 0xff); + p.push((bitLenHi>>>0) & 0xff); + p.push((bitLenLo>>>24) & 0xff); + p.push((bitLenLo>>>16) & 0xff); + p.push((bitLenLo>>>8) & 0xff); + p.push((bitLenLo>>>0) & 0xff); + + blocks(p); + + return [ + (h0>>>24) & 0xff, (h0>>>16) & 0xff, (h0>>>8) & 0xff, (h0>>>0) & 0xff, + (h1>>>24) & 0xff, (h1>>>16) & 0xff, (h1>>>8) & 0xff, (h1>>>0) & 0xff, + (h2>>>24) & 0xff, (h2>>>16) & 0xff, (h2>>>8) & 0xff, (h2>>>0) & 0xff, + (h3>>>24) & 0xff, (h3>>>16) & 0xff, (h3>>>8) & 0xff, (h3>>>0) & 0xff, + (h4>>>24) & 0xff, (h4>>>16) & 0xff, (h4>>>8) & 0xff, (h4>>>0) & 0xff, + (h5>>>24) & 0xff, (h5>>>16) & 0xff, (h5>>>8) & 0xff, (h5>>>0) & 0xff, + (h6>>>24) & 0xff, (h6>>>16) & 0xff, (h6>>>8) & 0xff, (h6>>>0) & 0xff, + (h7>>>24) & 0xff, (h7>>>16) & 0xff, (h7>>>8) & 0xff, (h7>>>0) & 0xff + ]; + } + + function PBKDF2_HMAC_SHA256_OneIter(password, salt, dkLen) { + // compress password if it's longer than hash block length + password = password.length <= 64 ? password : SHA256(password); + + var i; + var innerLen = 64 + salt.length + 4; + var inner = new Array(innerLen); + var outerKey = new Array(64); + var dk = []; + + // inner = (password ^ ipad) || salt || counter + for (i = 0; i < 64; i++) inner[i] = 0x36; + for (i = 0; i < password.length; i++) inner[i] ^= password[i]; + for (i = 0; i < salt.length; i++) inner[64+i] = salt[i]; + for (i = innerLen - 4; i < innerLen; i++) inner[i] = 0; + + // outerKey = password ^ opad + for (i = 0; i < 64; i++) outerKey[i] = 0x5c; + for (i = 0; i < password.length; i++) outerKey[i] ^= password[i]; + + // increments counter inside inner + function incrementCounter() { + for (var i = innerLen-1; i >= innerLen-4; i--) { + inner[i]++; + if (inner[i] <= 0xff) return; + inner[i] = 0; + } + } + + // output blocks = SHA256(outerKey || SHA256(inner)) ... + while (dkLen >= 32) { + incrementCounter(); + dk = dk.concat(SHA256(outerKey.concat(SHA256(inner)))); + dkLen -= 32; + } + if (dkLen > 0) { + incrementCounter(); + dk = dk.concat(SHA256(outerKey.concat(SHA256(inner))).slice(0, dkLen)); + } + + return dk; + } + + // The following is an adaptation of scryptsy + // See: https://www.npmjs.com/package/scryptsy + function blockmix_salsa8(BY, Yi, r, x, _X) { + var i; + + arraycopy(BY, (2 * r - 1) * 16, _X, 0, 16); + for (i = 0; i < 2 * r; i++) { + blockxor(BY, i * 16, _X, 16); + salsa20_8(_X, x); + arraycopy(_X, 0, BY, Yi + (i * 16), 16); + } + + for (i = 0; i < r; i++) { + arraycopy(BY, Yi + (i * 2) * 16, BY, (i * 16), 16); + } + + for (i = 0; i < r; i++) { + arraycopy(BY, Yi + (i * 2 + 1) * 16, BY, (i + r) * 16, 16); + } + } + + function R(a, b) { + return (a << b) | (a >>> (32 - b)); + } + + function salsa20_8(B, x) { + arraycopy(B, 0, x, 0, 16); + + for (var i = 8; i > 0; i -= 2) { + x[ 4] ^= R(x[ 0] + x[12], 7); + x[ 8] ^= R(x[ 4] + x[ 0], 9); + x[12] ^= R(x[ 8] + x[ 4], 13); + x[ 0] ^= R(x[12] + x[ 8], 18); + x[ 9] ^= R(x[ 5] + x[ 1], 7); + x[13] ^= R(x[ 9] + x[ 5], 9); + x[ 1] ^= R(x[13] + x[ 9], 13); + x[ 5] ^= R(x[ 1] + x[13], 18); + x[14] ^= R(x[10] + x[ 6], 7); + x[ 2] ^= R(x[14] + x[10], 9); + x[ 6] ^= R(x[ 2] + x[14], 13); + x[10] ^= R(x[ 6] + x[ 2], 18); + x[ 3] ^= R(x[15] + x[11], 7); + x[ 7] ^= R(x[ 3] + x[15], 9); + x[11] ^= R(x[ 7] + x[ 3], 13); + x[15] ^= R(x[11] + x[ 7], 18); + x[ 1] ^= R(x[ 0] + x[ 3], 7); + x[ 2] ^= R(x[ 1] + x[ 0], 9); + x[ 3] ^= R(x[ 2] + x[ 1], 13); + x[ 0] ^= R(x[ 3] + x[ 2], 18); + x[ 6] ^= R(x[ 5] + x[ 4], 7); + x[ 7] ^= R(x[ 6] + x[ 5], 9); + x[ 4] ^= R(x[ 7] + x[ 6], 13); + x[ 5] ^= R(x[ 4] + x[ 7], 18); + x[11] ^= R(x[10] + x[ 9], 7); + x[ 8] ^= R(x[11] + x[10], 9); + x[ 9] ^= R(x[ 8] + x[11], 13); + x[10] ^= R(x[ 9] + x[ 8], 18); + x[12] ^= R(x[15] + x[14], 7); + x[13] ^= R(x[12] + x[15], 9); + x[14] ^= R(x[13] + x[12], 13); + x[15] ^= R(x[14] + x[13], 18); + } + + for (i = 0; i < 16; ++i) { + B[i] += x[i]; + } + } + + // naive approach... going back to loop unrolling may yield additional performance + function blockxor(S, Si, D, len) { + for (var i = 0; i < len; i++) { + D[i] ^= S[Si + i] + } + } + + function arraycopy(src, srcPos, dest, destPos, length) { + while (length--) { + dest[destPos++] = src[srcPos++]; + } + } + + function checkBufferish(o) { + if (!o || typeof(o.length) !== 'number') { + return false; + } + for (var i = 0; i < o.length; i++) { + if (typeof(o[i]) !== 'number') { return false; } + + var v = parseInt(o[i]); + if (v != o[i] || v < 0 || v >= 256) { + return false; + } + } + return true; + } + + function ensureInteger(value, name) { + var intValue = parseInt(value); + if (value != intValue) { throw new Error('invalid ' + name); } + return intValue; + } + + // N = Cpu cost, r = Memory cost, p = parallelization cost + // callback(error, progress, key) + function scrypt(password, salt, N, r, p, dkLen, callback) { + + if (!callback) { throw new Error('missing callback'); } + + N = ensureInteger(N, 'N'); + r = ensureInteger(r, 'r'); + p = ensureInteger(p, 'p'); + + dkLen = ensureInteger(dkLen, 'dkLen'); + + if (N === 0 || (N & (N - 1)) !== 0) { throw new Error('N must be power of 2'); } + + if (N > MAX_VALUE / 128 / r) { throw new Error('N too large'); } + if (r > MAX_VALUE / 128 / p) { throw new Error('r too large'); } + + if (!checkBufferish(password)) { + throw new Error('password must be an array or buffer'); + } + + if (!checkBufferish(salt)) { + throw new Error('salt must be an array or buffer'); + } + + var b = PBKDF2_HMAC_SHA256_OneIter(password, salt, p * 128 * r); + var B = new Uint32Array(p * 32 * r) + for (var i = 0; i < B.length; i++) { + var j = i * 4; + B[i] = ((b[j + 3] & 0xff) << 24) | + ((b[j + 2] & 0xff) << 16) | + ((b[j + 1] & 0xff) << 8) | + ((b[j + 0] & 0xff) << 0); + } + + var XY = new Uint32Array(64 * r); + var V = new Uint32Array(32 * r * N); + + var Yi = 32 * r; + + // scratch space + var x = new Uint32Array(16); // salsa20_8 + var _X = new Uint32Array(16); // blockmix_salsa8 + + var totalOps = p * N * 2; + var currentOp = 0; + var lastPercent10 = null; + + // Set this to true to abandon the scrypt on the next step + var stop = false; + + // State information + var state = 0; + var i0 = 0, i1; + var Bi; + + // How many blockmix_salsa8 can we do per step? + var limit = parseInt(1000 / r); + + // Trick from scrypt-async; if there is a setImmediate shim in place, use it + var nextTick = (typeof(setImmediate) !== 'undefined') ? setImmediate : setTimeout; + + // This is really all I changed; making scryptsy a state machine so we occasionally + // stop and give other evnts on the evnt loop a chance to run. ~RicMoo + var incrementalSMix = function() { + if (stop) { + return callback(new Error('cancelled'), currentOp / totalOps); + } + + switch (state) { + case 0: + // for (var i = 0; i < p; i++)... + Bi = i0 * 32 * r; + + arraycopy(B, Bi, XY, 0, Yi); // ROMix - 1 + + state = 1; // Move to ROMix 2 + i1 = 0; + + // Fall through + + case 1: + + // Run up to 1000 steps of the first inner smix loop + var steps = N - i1; + if (steps > limit) { steps = limit; } + for (var i = 0; i < steps; i++) { // ROMix - 2 + arraycopy(XY, 0, V, (i1 + i) * Yi, Yi) // ROMix - 3 + blockmix_salsa8(XY, Yi, r, x, _X); // ROMix - 4 + } + + // for (var i = 0; i < N; i++) + i1 += steps; + currentOp += steps; + + // Call the callback with the progress (optionally stopping us) + var percent10 = parseInt(1000 * currentOp / totalOps); + if (percent10 !== lastPercent10) { + stop = callback(null, currentOp / totalOps); + if (stop) { break; } + lastPercent10 = percent10; + } + + if (i1 < N) { + break; + } + + i1 = 0; // Move to ROMix 6 + state = 2; + + // Fall through + + case 2: + + // Run up to 1000 steps of the second inner smix loop + var steps = N - i1; + if (steps > limit) { steps = limit; } + for (var i = 0; i < steps; i++) { // ROMix - 6 + var offset = (2 * r - 1) * 16; // ROMix - 7 + var j = XY[offset] & (N - 1); + blockxor(V, j * Yi, XY, Yi); // ROMix - 8 (inner) + blockmix_salsa8(XY, Yi, r, x, _X); // ROMix - 9 (outer) + } + + // for (var i = 0; i < N; i++)... + i1 += steps; + currentOp += steps; + + // Call the callback with the progress (optionally stopping us) + var percent10 = parseInt(1000 * currentOp / totalOps); + if (percent10 !== lastPercent10) { + stop = callback(null, currentOp / totalOps); + if (stop) { break; } + lastPercent10 = percent10; + } + + if (i1 < N) { + break; + } + + arraycopy(XY, 0, B, Bi, Yi); // ROMix - 10 + + // for (var i = 0; i < p; i++)... + i0++; + if (i0 < p) { + state = 0; + break; + } + + b = []; + for (var i = 0; i < B.length; i++) { + b.push((B[i] >> 0) & 0xff); + b.push((B[i] >> 8) & 0xff); + b.push((B[i] >> 16) & 0xff); + b.push((B[i] >> 24) & 0xff); + } + + var derivedKey = PBKDF2_HMAC_SHA256_OneIter(password, b, dkLen); + + // Done; don't break (which would reschedule) + return callback(null, 1.0, derivedKey); + } + + // Schedule the next steps + nextTick(incrementalSMix); + } + + // Bootstrap the incremental smix + incrementalSMix(); + } + + // node.js + if (typeof(exports) !== 'undefined') { + module.exports = scrypt; + + // RequireJS/AMD + // http://www.requirejs.org/docs/api.html + // https://github.com/amdjs/amdjs-api/wiki/AMD + } else if (typeof(define) === 'function' && define.amd) { + define(scrypt); + + // Web Browsers + } else if (root) { + + // If there was an existing library "scrypt", make sure it is still available + if (root.scrypt) { + root._scrypt = root.scrypt; + } + + root.scrypt = scrypt; + } + +})(this); diff --git a/frontend/sha256.js b/frontend/sha256.js new file mode 100644 index 0000000..65ed579 --- /dev/null +++ b/frontend/sha256.js @@ -0,0 +1,172 @@ +/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */ +/* SHA-256 (FIPS 180-4) implementation in JavaScript (c) Chris Veness 2002-2017 */ +/* MIT Licence */ +/* www.movable-type.co.uk/scripts/sha256.html */ +/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */ + +'use strict'; + +/** + * SHA-256 hash function reference implementation. + * + * This is an annotated direct implementation of FIPS 180-4, without any optimisations. It is + * intended to aid understanding of the algorithm rather than for production use. + * + * While it could be used where performance is not critical, I would recommend using the ‘Web + * Cryptography API’ (developer.mozilla.org/en-US/docs/Web/API/SubtleCrypto/digest) for the browser, + * or the ‘crypto’ library (nodejs.org/api/crypto.html#crypto_class_hash) in Node.js. + * + * See csrc.nist.gov/groups/ST/toolkit/secure_hashing.html + * csrc.nist.gov/groups/ST/toolkit/examples.html + */ +class Sha256 { + + /** + * Generates SHA-256 hash of string. + * + * @param {string} msg - (Unicode) string to be hashed. + * @param {Object} [options] + * @param {string} [options.msgFormat=string] - Message format: 'string' for JavaScript string + * (gets converted to UTF-8 for hashing); 'hex-bytes' for string of hex bytes ('616263' ≡ 'abc') . + * @param {string} [options.outFormat=hex] - Output format: 'hex' for string of contiguous + * hex bytes; 'hex-w' for grouping hex bytes into groups of (4 byte / 8 character) words. + * @returns {string} Hash of msg as hex character string. + */ + static hash(msg, options) { + const defaults = { msgFormat: 'string', outFormat: 'hex' }; + const opt = Object.assign(defaults, options); + + // note use throughout this routine of 'n >>> 0' to coerce Number 'n' to unsigned 32-bit integer + + switch (opt.msgFormat) { + default: // default is to convert string to UTF-8, as SHA only deals with byte-streams + case 'string': msg = utf8Encode(msg); break; + case 'hex-bytes':msg = hexBytesToString(msg); break; // mostly for running tests + } + + // constants [§4.2.2] + const 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 ]; + + // initial hash value [§5.3.3] + const H = [ + 0x6a09e667, 0xbb67ae85, 0x3c6ef372, 0xa54ff53a, 0x510e527f, 0x9b05688c, 0x1f83d9ab, 0x5be0cd19 ]; + + // PREPROCESSING [§6.2.1] + + msg += String.fromCharCode(0x80); // add trailing '1' bit (+ 0's padding) to string [§5.1.1] + + // convert string msg into 512-bit blocks (array of 16 32-bit integers) [§5.2.1] + const l = msg.length/4 + 2; // length (in 32-bit integers) of msg + ‘1’ + appended length + const N = Math.ceil(l/16); // number of 16-integer (512-bit) blocks required to hold 'l' ints + const M = new Array(N); // message M is N×16 array of 32-bit integers + + for (let i=0; i<N; i++) { + M[i] = new Array(16); + for (let j=0; j<16; j++) { // encode 4 chars per integer (64 per block), big-endian encoding + M[i][j] = (msg.charCodeAt(i*64+j*4+0)<<24) | (msg.charCodeAt(i*64+j*4+1)<<16) + | (msg.charCodeAt(i*64+j*4+2)<< 8) | (msg.charCodeAt(i*64+j*4+3)<< 0); + } // note running off the end of msg is ok 'cos bitwise ops on NaN return 0 + } + // add length (in bits) into final pair of 32-bit integers (big-endian) [§5.1.1] + // note: most significant word would be (len-1)*8 >>> 32, but since JS converts + // bitwise-op args to 32 bits, we need to simulate this by arithmetic operators + const lenHi = ((msg.length-1)*8) / Math.pow(2, 32); + const lenLo = ((msg.length-1)*8) >>> 0; + M[N-1][14] = Math.floor(lenHi); + M[N-1][15] = lenLo; + + + // HASH COMPUTATION [§6.2.2] + + for (let i=0; i<N; i++) { + const W = new Array(64); + + // 1 - prepare message schedule 'W' + for (let t=0; t<16; t++) W[t] = M[i][t]; + for (let t=16; t<64; t++) { + W[t] = (Sha256.σ1(W[t-2]) + W[t-7] + Sha256.σ0(W[t-15]) + W[t-16]) >>> 0; + } + + // 2 - initialise working variables a, b, c, d, e, f, g, h with previous hash value + let a = H[0], b = H[1], c = H[2], d = H[3], e = H[4], f = H[5], g = H[6], h = H[7]; + + // 3 - main loop (note '>>> 0' for 'addition modulo 2^32') + for (let t=0; t<64; t++) { + const T1 = h + Sha256.Σ1(e) + Sha256.Ch(e, f, g) + K[t] + W[t]; + const T2 = Sha256.Σ0(a) + Sha256.Maj(a, b, c); + h = g; + g = f; + f = e; + e = (d + T1) >>> 0; + d = c; + c = b; + b = a; + a = (T1 + T2) >>> 0; + } + + // 4 - compute the new intermediate hash value (note '>>> 0' for 'addition modulo 2^32') + H[0] = (H[0]+a) >>> 0; + H[1] = (H[1]+b) >>> 0; + H[2] = (H[2]+c) >>> 0; + H[3] = (H[3]+d) >>> 0; + H[4] = (H[4]+e) >>> 0; + H[5] = (H[5]+f) >>> 0; + H[6] = (H[6]+g) >>> 0; + H[7] = (H[7]+h) >>> 0; + } + + // convert H0..H7 to hex strings (with leading zeros) + for (let h=0; h<H.length; h++) H[h] = ('00000000'+H[h].toString(16)).slice(-8); + + // concatenate H0..H7, with separator if required + const separator = opt.outFormat=='hex-w' ? ' ' : ''; + + return H.join(separator); + + /* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */ + + function utf8Encode(str) { + try { + return new TextEncoder().encode(str, 'utf-8').reduce((prev, curr) => prev + String.fromCharCode(curr), ''); + } catch (e) { // no TextEncoder available? + return unescape(encodeURIComponent(str)); // monsur.hossa.in/2012/07/20/utf-8-in-javascript.html + } + } + + function hexBytesToString(hexStr) { // convert string of hex numbers to a string of chars (eg '616263' -> 'abc'). + const str = hexStr.replace(' ', ''); // allow space-separated groups + return str=='' ? '' : str.match(/.{2}/g).map(byte => String.fromCharCode(parseInt(byte, 16))).join(''); + } + } + + + + /** + * Rotates right (circular right shift) value x by n positions [§3.2.4]. + * @private + */ + static ROTR(n, x) { + return (x >>> n) | (x << (32-n)); + } + + + /** + * Logical functions [§4.1.2]. + * @private + */ + static Σ0(x) { return Sha256.ROTR(2, x) ^ Sha256.ROTR(13, x) ^ Sha256.ROTR(22, x); } + static Σ1(x) { return Sha256.ROTR(6, x) ^ Sha256.ROTR(11, x) ^ Sha256.ROTR(25, x); } + static σ0(x) { return Sha256.ROTR(7, x) ^ Sha256.ROTR(18, x) ^ (x>>>3); } + static σ1(x) { return Sha256.ROTR(17, x) ^ Sha256.ROTR(19, x) ^ (x>>>10); } + static Ch(x, y, z) { return (x & y) ^ (~x & z); } // 'choice' + static Maj(x, y, z) { return (x & y) ^ (x & z) ^ (y & z); } // 'majority' + +} |