| 'use strict'; |
| |
| exports.readUInt32BE = function readUInt32BE(bytes, off) { |
| var res = (bytes[0 + off] << 24) | |
| (bytes[1 + off] << 16) | |
| (bytes[2 + off] << 8) | |
| bytes[3 + off]; |
| return res >>> 0; |
| }; |
| |
| exports.writeUInt32BE = function writeUInt32BE(bytes, value, off) { |
| bytes[0 + off] = value >>> 24; |
| bytes[1 + off] = (value >>> 16) & 0xff; |
| bytes[2 + off] = (value >>> 8) & 0xff; |
| bytes[3 + off] = value & 0xff; |
| }; |
| |
| exports.ip = function ip(inL, inR, out, off) { |
| var outL = 0; |
| var outR = 0; |
| |
| for (var i = 6; i >= 0; i -= 2) { |
| for (var j = 0; j <= 24; j += 8) { |
| outL <<= 1; |
| outL |= (inR >>> (j + i)) & 1; |
| } |
| for (var j = 0; j <= 24; j += 8) { |
| outL <<= 1; |
| outL |= (inL >>> (j + i)) & 1; |
| } |
| } |
| |
| for (var i = 6; i >= 0; i -= 2) { |
| for (var j = 1; j <= 25; j += 8) { |
| outR <<= 1; |
| outR |= (inR >>> (j + i)) & 1; |
| } |
| for (var j = 1; j <= 25; j += 8) { |
| outR <<= 1; |
| outR |= (inL >>> (j + i)) & 1; |
| } |
| } |
| |
| out[off + 0] = outL >>> 0; |
| out[off + 1] = outR >>> 0; |
| }; |
| |
| exports.rip = function rip(inL, inR, out, off) { |
| var outL = 0; |
| var outR = 0; |
| |
| for (var i = 0; i < 4; i++) { |
| for (var j = 24; j >= 0; j -= 8) { |
| outL <<= 1; |
| outL |= (inR >>> (j + i)) & 1; |
| outL <<= 1; |
| outL |= (inL >>> (j + i)) & 1; |
| } |
| } |
| for (var i = 4; i < 8; i++) { |
| for (var j = 24; j >= 0; j -= 8) { |
| outR <<= 1; |
| outR |= (inR >>> (j + i)) & 1; |
| outR <<= 1; |
| outR |= (inL >>> (j + i)) & 1; |
| } |
| } |
| |
| out[off + 0] = outL >>> 0; |
| out[off + 1] = outR >>> 0; |
| }; |
| |
| exports.pc1 = function pc1(inL, inR, out, off) { |
| var outL = 0; |
| var outR = 0; |
| |
| // 7, 15, 23, 31, 39, 47, 55, 63 |
| // 6, 14, 22, 30, 39, 47, 55, 63 |
| // 5, 13, 21, 29, 39, 47, 55, 63 |
| // 4, 12, 20, 28 |
| for (var i = 7; i >= 5; i--) { |
| for (var j = 0; j <= 24; j += 8) { |
| outL <<= 1; |
| outL |= (inR >> (j + i)) & 1; |
| } |
| for (var j = 0; j <= 24; j += 8) { |
| outL <<= 1; |
| outL |= (inL >> (j + i)) & 1; |
| } |
| } |
| for (var j = 0; j <= 24; j += 8) { |
| outL <<= 1; |
| outL |= (inR >> (j + i)) & 1; |
| } |
| |
| // 1, 9, 17, 25, 33, 41, 49, 57 |
| // 2, 10, 18, 26, 34, 42, 50, 58 |
| // 3, 11, 19, 27, 35, 43, 51, 59 |
| // 36, 44, 52, 60 |
| for (var i = 1; i <= 3; i++) { |
| for (var j = 0; j <= 24; j += 8) { |
| outR <<= 1; |
| outR |= (inR >> (j + i)) & 1; |
| } |
| for (var j = 0; j <= 24; j += 8) { |
| outR <<= 1; |
| outR |= (inL >> (j + i)) & 1; |
| } |
| } |
| for (var j = 0; j <= 24; j += 8) { |
| outR <<= 1; |
| outR |= (inL >> (j + i)) & 1; |
| } |
| |
| out[off + 0] = outL >>> 0; |
| out[off + 1] = outR >>> 0; |
| }; |
| |
| exports.r28shl = function r28shl(num, shift) { |
| return ((num << shift) & 0xfffffff) | (num >>> (28 - shift)); |
| }; |
| |
| var pc2table = [ |
| // inL => outL |
| 14, 11, 17, 4, 27, 23, 25, 0, |
| 13, 22, 7, 18, 5, 9, 16, 24, |
| 2, 20, 12, 21, 1, 8, 15, 26, |
| |
| // inR => outR |
| 15, 4, 25, 19, 9, 1, 26, 16, |
| 5, 11, 23, 8, 12, 7, 17, 0, |
| 22, 3, 10, 14, 6, 20, 27, 24 |
| ]; |
| |
| exports.pc2 = function pc2(inL, inR, out, off) { |
| var outL = 0; |
| var outR = 0; |
| |
| var len = pc2table.length >>> 1; |
| for (var i = 0; i < len; i++) { |
| outL <<= 1; |
| outL |= (inL >>> pc2table[i]) & 0x1; |
| } |
| for (var i = len; i < pc2table.length; i++) { |
| outR <<= 1; |
| outR |= (inR >>> pc2table[i]) & 0x1; |
| } |
| |
| out[off + 0] = outL >>> 0; |
| out[off + 1] = outR >>> 0; |
| }; |
| |
| exports.expand = function expand(r, out, off) { |
| var outL = 0; |
| var outR = 0; |
| |
| outL = ((r & 1) << 5) | (r >>> 27); |
| for (var i = 23; i >= 15; i -= 4) { |
| outL <<= 6; |
| outL |= (r >>> i) & 0x3f; |
| } |
| for (var i = 11; i >= 3; i -= 4) { |
| outR |= (r >>> i) & 0x3f; |
| outR <<= 6; |
| } |
| outR |= ((r & 0x1f) << 1) | (r >>> 31); |
| |
| out[off + 0] = outL >>> 0; |
| out[off + 1] = outR >>> 0; |
| }; |
| |
| var sTable = [ |
| 14, 0, 4, 15, 13, 7, 1, 4, 2, 14, 15, 2, 11, 13, 8, 1, |
| 3, 10, 10, 6, 6, 12, 12, 11, 5, 9, 9, 5, 0, 3, 7, 8, |
| 4, 15, 1, 12, 14, 8, 8, 2, 13, 4, 6, 9, 2, 1, 11, 7, |
| 15, 5, 12, 11, 9, 3, 7, 14, 3, 10, 10, 0, 5, 6, 0, 13, |
| |
| 15, 3, 1, 13, 8, 4, 14, 7, 6, 15, 11, 2, 3, 8, 4, 14, |
| 9, 12, 7, 0, 2, 1, 13, 10, 12, 6, 0, 9, 5, 11, 10, 5, |
| 0, 13, 14, 8, 7, 10, 11, 1, 10, 3, 4, 15, 13, 4, 1, 2, |
| 5, 11, 8, 6, 12, 7, 6, 12, 9, 0, 3, 5, 2, 14, 15, 9, |
| |
| 10, 13, 0, 7, 9, 0, 14, 9, 6, 3, 3, 4, 15, 6, 5, 10, |
| 1, 2, 13, 8, 12, 5, 7, 14, 11, 12, 4, 11, 2, 15, 8, 1, |
| 13, 1, 6, 10, 4, 13, 9, 0, 8, 6, 15, 9, 3, 8, 0, 7, |
| 11, 4, 1, 15, 2, 14, 12, 3, 5, 11, 10, 5, 14, 2, 7, 12, |
| |
| 7, 13, 13, 8, 14, 11, 3, 5, 0, 6, 6, 15, 9, 0, 10, 3, |
| 1, 4, 2, 7, 8, 2, 5, 12, 11, 1, 12, 10, 4, 14, 15, 9, |
| 10, 3, 6, 15, 9, 0, 0, 6, 12, 10, 11, 1, 7, 13, 13, 8, |
| 15, 9, 1, 4, 3, 5, 14, 11, 5, 12, 2, 7, 8, 2, 4, 14, |
| |
| 2, 14, 12, 11, 4, 2, 1, 12, 7, 4, 10, 7, 11, 13, 6, 1, |
| 8, 5, 5, 0, 3, 15, 15, 10, 13, 3, 0, 9, 14, 8, 9, 6, |
| 4, 11, 2, 8, 1, 12, 11, 7, 10, 1, 13, 14, 7, 2, 8, 13, |
| 15, 6, 9, 15, 12, 0, 5, 9, 6, 10, 3, 4, 0, 5, 14, 3, |
| |
| 12, 10, 1, 15, 10, 4, 15, 2, 9, 7, 2, 12, 6, 9, 8, 5, |
| 0, 6, 13, 1, 3, 13, 4, 14, 14, 0, 7, 11, 5, 3, 11, 8, |
| 9, 4, 14, 3, 15, 2, 5, 12, 2, 9, 8, 5, 12, 15, 3, 10, |
| 7, 11, 0, 14, 4, 1, 10, 7, 1, 6, 13, 0, 11, 8, 6, 13, |
| |
| 4, 13, 11, 0, 2, 11, 14, 7, 15, 4, 0, 9, 8, 1, 13, 10, |
| 3, 14, 12, 3, 9, 5, 7, 12, 5, 2, 10, 15, 6, 8, 1, 6, |
| 1, 6, 4, 11, 11, 13, 13, 8, 12, 1, 3, 4, 7, 10, 14, 7, |
| 10, 9, 15, 5, 6, 0, 8, 15, 0, 14, 5, 2, 9, 3, 2, 12, |
| |
| 13, 1, 2, 15, 8, 13, 4, 8, 6, 10, 15, 3, 11, 7, 1, 4, |
| 10, 12, 9, 5, 3, 6, 14, 11, 5, 0, 0, 14, 12, 9, 7, 2, |
| 7, 2, 11, 1, 4, 14, 1, 7, 9, 4, 12, 10, 14, 8, 2, 13, |
| 0, 15, 6, 12, 10, 9, 13, 0, 15, 3, 3, 5, 5, 6, 8, 11 |
| ]; |
| |
| exports.substitute = function substitute(inL, inR) { |
| var out = 0; |
| for (var i = 0; i < 4; i++) { |
| var b = (inL >>> (18 - i * 6)) & 0x3f; |
| var sb = sTable[i * 0x40 + b]; |
| |
| out <<= 4; |
| out |= sb; |
| } |
| for (var i = 0; i < 4; i++) { |
| var b = (inR >>> (18 - i * 6)) & 0x3f; |
| var sb = sTable[4 * 0x40 + i * 0x40 + b]; |
| |
| out <<= 4; |
| out |= sb; |
| } |
| return out >>> 0; |
| }; |
| |
| var permuteTable = [ |
| 16, 25, 12, 11, 3, 20, 4, 15, 31, 17, 9, 6, 27, 14, 1, 22, |
| 30, 24, 8, 18, 0, 5, 29, 23, 13, 19, 2, 26, 10, 21, 28, 7 |
| ]; |
| |
| exports.permute = function permute(num) { |
| var out = 0; |
| for (var i = 0; i < permuteTable.length; i++) { |
| out <<= 1; |
| out |= (num >>> permuteTable[i]) & 0x1; |
| } |
| return out >>> 0; |
| }; |
| |
| exports.padSplit = function padSplit(num, size, group) { |
| var str = num.toString(2); |
| while (str.length < size) |
| str = '0' + str; |
| |
| var out = []; |
| for (var i = 0; i < size; i += group) |
| out.push(str.slice(i, i + group)); |
| return out.join(' '); |
| }; |