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