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Convert DES into a class

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pull/36/head
Juanjo Diaz 7 years ago committed by Lauri Kasanen
parent 7b7295fd4e
commit 075eed5cbb
2 changed files with 71 additions and 77 deletions
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kasmweb/core/des.js
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@ -77,67 +77,68 @@
/* eslint-disable comma-spacing */ /* eslint-disable comma-spacing */
export default function DES(passwd) { // Tables, permutations, S-boxes, etc.
"use strict"; const PC2 = [13,16,10,23, 0, 4, 2,27,14, 5,20, 9,22,18,11, 3,
25, 7,15, 6,26,19,12, 1,40,51,30,36,46,54,29,39,
50,44,32,47,43,48,38,55,33,52,45,41,49,35,28,31 ],
totrot = [ 1, 2, 4, 6, 8,10,12,14,15,17,19,21,23,25,27,28];
// Tables, permutations, S-boxes, etc. const z = 0x0;
const PC2 = [13,16,10,23, 0, 4, 2,27,14, 5,20, 9,22,18,11, 3, let a,b,c,d,e,f;
25, 7,15, 6,26,19,12, 1,40,51,30,36,46,54,29,39, a=1<<16; b=1<<24; c=a|b; d=1<<2; e=1<<10; f=d|e;
50,44,32,47,43,48,38,55,33,52,45,41,49,35,28,31 ], const SP1 = [c|e,z|z,a|z,c|f,c|d,a|f,z|d,a|z,z|e,c|e,c|f,z|e,b|f,c|d,b|z,z|d,
totrot = [ 1, 2, 4, 6, 8,10,12,14,15,17,19,21,23,25,27,28], z|f,b|e,b|e,a|e,a|e,c|z,c|z,b|f,a|d,b|d,b|d,a|d,z|z,z|f,a|f,b|z,
z = 0x0, a|z,c|f,z|d,c|z,c|e,b|z,b|z,z|e,c|d,a|z,a|e,b|d,z|e,z|d,b|f,a|f,
keys = []; c|f,a|d,c|z,b|f,b|d,z|f,a|f,c|e,z|f,b|e,b|e,z|z,a|d,a|e,z|z,c|d];
let a,b,c,d,e,f; a=1<<20; b=1<<31; c=a|b; d=1<<5; e=1<<15; f=d|e;
const SP2 = [c|f,b|e,z|e,a|f,a|z,z|d,c|d,b|f,b|d,c|f,c|e,b|z,b|e,a|z,z|d,c|d,
a|e,a|d,b|f,z|z,b|z,z|e,a|f,c|z,a|d,b|d,z|z,a|e,z|f,c|e,c|z,z|f,
z|z,a|f,c|d,a|z,b|f,c|z,c|e,z|e,c|z,b|e,z|d,c|f,a|f,z|d,z|e,b|z,
z|f,c|e,a|z,b|d,a|d,b|f,b|d,a|d,a|e,z|z,b|e,z|f,b|z,c|d,c|f,a|e];
a=1<<17; b=1<<27; c=a|b; d=1<<3; e=1<<9; f=d|e;
const SP3 = [z|f,c|e,z|z,c|d,b|e,z|z,a|f,b|e,a|d,b|d,b|d,a|z,c|f,a|d,c|z,z|f,
b|z,z|d,c|e,z|e,a|e,c|z,c|d,a|f,b|f,a|e,a|z,b|f,z|d,c|f,z|e,b|z,
c|e,b|z,a|d,z|f,a|z,c|e,b|e,z|z,z|e,a|d,c|f,b|e,b|d,z|e,z|z,c|d,
b|f,a|z,b|z,c|f,z|d,a|f,a|e,b|d,c|z,b|f,z|f,c|z,a|f,z|d,c|d,a|e];
a=1<<13; b=1<<23; c=a|b; d=1<<0; e=1<<7; f=d|e;
const SP4 = [c|d,a|f,a|f,z|e,c|e,b|f,b|d,a|d,z|z,c|z,c|z,c|f,z|f,z|z,b|e,b|d,
z|d,a|z,b|z,c|d,z|e,b|z,a|d,a|e,b|f,z|d,a|e,b|e,a|z,c|e,c|f,z|f,
b|e,b|d,c|z,c|f,z|f,z|z,z|z,c|z,a|e,b|e,b|f,z|d,c|d,a|f,a|f,z|e,
c|f,z|f,z|d,a|z,b|d,a|d,c|e,b|f,a|d,a|e,b|z,c|d,z|e,b|z,a|z,c|e];
a=1<<25; b=1<<30; c=a|b; d=1<<8; e=1<<19; f=d|e;
const SP5 = [z|d,a|f,a|e,c|d,z|e,z|d,b|z,a|e,b|f,z|e,a|d,b|f,c|d,c|e,z|f,b|z,
a|z,b|e,b|e,z|z,b|d,c|f,c|f,a|d,c|e,b|d,z|z,c|z,a|f,a|z,c|z,z|f,
z|e,c|d,z|d,a|z,b|z,a|e,c|d,b|f,a|d,b|z,c|e,a|f,b|f,z|d,a|z,c|e,
c|f,z|f,c|z,c|f,a|e,z|z,b|e,c|z,z|f,a|d,b|d,z|e,z|z,b|e,a|f,b|d];
a=1<<22; b=1<<29; c=a|b; d=1<<4; e=1<<14; f=d|e;
const SP6 = [b|d,c|z,z|e,c|f,c|z,z|d,c|f,a|z,b|e,a|f,a|z,b|d,a|d,b|e,b|z,z|f,
z|z,a|d,b|f,z|e,a|e,b|f,z|d,c|d,c|d,z|z,a|f,c|e,z|f,a|e,c|e,b|z,
b|e,z|d,c|d,a|e,c|f,a|z,z|f,b|d,a|z,b|e,b|z,z|f,b|d,c|f,a|e,c|z,
a|f,c|e,z|z,c|d,z|d,z|e,c|z,a|f,z|e,a|d,b|f,z|z,c|e,b|z,a|d,b|f];
a=1<<21; b=1<<26; c=a|b; d=1<<1; e=1<<11; f=d|e;
const SP7 = [a|z,c|d,b|f,z|z,z|e,b|f,a|f,c|e,c|f,a|z,z|z,b|d,z|d,b|z,c|d,z|f,
b|e,a|f,a|d,b|e,b|d,c|z,c|e,a|d,c|z,z|e,z|f,c|f,a|e,z|d,b|z,a|e,
b|z,a|e,a|z,b|f,b|f,c|d,c|d,z|d,a|d,b|z,b|e,a|z,c|e,z|f,a|f,c|e,
z|f,b|d,c|f,c|z,a|e,z|z,z|d,c|f,z|z,a|f,c|z,z|e,b|d,b|e,z|e,a|d];
a=1<<18; b=1<<28; c=a|b; d=1<<6; e=1<<12; f=d|e;
const SP8 = [b|f,z|e,a|z,c|f,b|z,b|f,z|d,b|z,a|d,c|z,c|f,a|e,c|e,a|f,z|e,z|d,
c|z,b|d,b|e,z|f,a|e,a|d,c|d,c|e,z|f,z|z,z|z,c|d,b|d,b|e,a|f,a|z,
a|f,a|z,c|e,z|e,z|d,c|d,z|e,a|f,b|e,z|d,b|d,c|z,c|d,b|z,a|z,b|f,
z|z,c|f,a|d,b|d,c|z,b|e,b|f,z|z,c|f,a|e,a|e,z|f,z|f,a|d,b|z,c|e];
a=1<<16; b=1<<24; c=a|b; d=1<<2; e=1<<10; f=d|e; /* eslint-enable comma-spacing */
const SP1 = [c|e,z|z,a|z,c|f,c|d,a|f,z|d,a|z,z|e,c|e,c|f,z|e,b|f,c|d,b|z,z|d,
z|f,b|e,b|e,a|e,a|e,c|z,c|z,b|f,a|d,b|d,b|d,a|d,z|z,z|f,a|f,b|z,
a|z,c|f,z|d,c|z,c|e,b|z,b|z,z|e,c|d,a|z,a|e,b|d,z|e,z|d,b|f,a|f,
c|f,a|d,c|z,b|f,b|d,z|f,a|f,c|e,z|f,b|e,b|e,z|z,a|d,a|e,z|z,c|d];
a=1<<20; b=1<<31; c=a|b; d=1<<5; e=1<<15; f=d|e;
const SP2 = [c|f,b|e,z|e,a|f,a|z,z|d,c|d,b|f,b|d,c|f,c|e,b|z,b|e,a|z,z|d,c|d,
a|e,a|d,b|f,z|z,b|z,z|e,a|f,c|z,a|d,b|d,z|z,a|e,z|f,c|e,c|z,z|f,
z|z,a|f,c|d,a|z,b|f,c|z,c|e,z|e,c|z,b|e,z|d,c|f,a|f,z|d,z|e,b|z,
z|f,c|e,a|z,b|d,a|d,b|f,b|d,a|d,a|e,z|z,b|e,z|f,b|z,c|d,c|f,a|e];
a=1<<17; b=1<<27; c=a|b; d=1<<3; e=1<<9; f=d|e;
const SP3 = [z|f,c|e,z|z,c|d,b|e,z|z,a|f,b|e,a|d,b|d,b|d,a|z,c|f,a|d,c|z,z|f,
b|z,z|d,c|e,z|e,a|e,c|z,c|d,a|f,b|f,a|e,a|z,b|f,z|d,c|f,z|e,b|z,
c|e,b|z,a|d,z|f,a|z,c|e,b|e,z|z,z|e,a|d,c|f,b|e,b|d,z|e,z|z,c|d,
b|f,a|z,b|z,c|f,z|d,a|f,a|e,b|d,c|z,b|f,z|f,c|z,a|f,z|d,c|d,a|e];
a=1<<13; b=1<<23; c=a|b; d=1<<0; e=1<<7; f=d|e;
const SP4 = [c|d,a|f,a|f,z|e,c|e,b|f,b|d,a|d,z|z,c|z,c|z,c|f,z|f,z|z,b|e,b|d,
z|d,a|z,b|z,c|d,z|e,b|z,a|d,a|e,b|f,z|d,a|e,b|e,a|z,c|e,c|f,z|f,
b|e,b|d,c|z,c|f,z|f,z|z,z|z,c|z,a|e,b|e,b|f,z|d,c|d,a|f,a|f,z|e,
c|f,z|f,z|d,a|z,b|d,a|d,c|e,b|f,a|d,a|e,b|z,c|d,z|e,b|z,a|z,c|e];
a=1<<25; b=1<<30; c=a|b; d=1<<8; e=1<<19; f=d|e;
const SP5 = [z|d,a|f,a|e,c|d,z|e,z|d,b|z,a|e,b|f,z|e,a|d,b|f,c|d,c|e,z|f,b|z,
a|z,b|e,b|e,z|z,b|d,c|f,c|f,a|d,c|e,b|d,z|z,c|z,a|f,a|z,c|z,z|f,
z|e,c|d,z|d,a|z,b|z,a|e,c|d,b|f,a|d,b|z,c|e,a|f,b|f,z|d,a|z,c|e,
c|f,z|f,c|z,c|f,a|e,z|z,b|e,c|z,z|f,a|d,b|d,z|e,z|z,b|e,a|f,b|d];
a=1<<22; b=1<<29; c=a|b; d=1<<4; e=1<<14; f=d|e;
const SP6 = [b|d,c|z,z|e,c|f,c|z,z|d,c|f,a|z,b|e,a|f,a|z,b|d,a|d,b|e,b|z,z|f,
z|z,a|d,b|f,z|e,a|e,b|f,z|d,c|d,c|d,z|z,a|f,c|e,z|f,a|e,c|e,b|z,
b|e,z|d,c|d,a|e,c|f,a|z,z|f,b|d,a|z,b|e,b|z,z|f,b|d,c|f,a|e,c|z,
a|f,c|e,z|z,c|d,z|d,z|e,c|z,a|f,z|e,a|d,b|f,z|z,c|e,b|z,a|d,b|f];
a=1<<21; b=1<<26; c=a|b; d=1<<1; e=1<<11; f=d|e;
const SP7 = [a|z,c|d,b|f,z|z,z|e,b|f,a|f,c|e,c|f,a|z,z|z,b|d,z|d,b|z,c|d,z|f,
b|e,a|f,a|d,b|e,b|d,c|z,c|e,a|d,c|z,z|e,z|f,c|f,a|e,z|d,b|z,a|e,
b|z,a|e,a|z,b|f,b|f,c|d,c|d,z|d,a|d,b|z,b|e,a|z,c|e,z|f,a|f,c|e,
z|f,b|d,c|f,c|z,a|e,z|z,z|d,c|f,z|z,a|f,c|z,z|e,b|d,b|e,z|e,a|d];
a=1<<18; b=1<<28; c=a|b; d=1<<6; e=1<<12; f=d|e;
const SP8 = [b|f,z|e,a|z,c|f,b|z,b|f,z|d,b|z,a|d,c|z,c|f,a|e,c|e,a|f,z|e,z|d,
c|z,b|d,b|e,z|f,a|e,a|d,c|d,c|e,z|f,z|z,z|z,c|d,b|d,b|e,a|f,a|z,
a|f,a|z,c|e,z|e,z|d,c|d,z|e,a|f,b|e,z|d,b|d,c|z,c|d,b|z,a|z,b|f,
z|z,c|f,a|d,b|d,c|z,b|e,b|f,z|z,c|f,a|e,a|e,z|f,z|f,a|d,b|z,c|e];
// Set the key. export default class DES {
function setKeys(keyBlock) { constructor(password) {
this.keys = [];
// Set the key.
const pc1m = [], pcr = [], kn = []; const pc1m = [], pcr = [], kn = [];
for (let j = 0, l = 56; j < 56; ++j, l -= 8) { for (let j = 0, l = 56; j < 56; ++j, l -= 8) {
l += l < -5 ? 65 : l < -3 ? 31 : l < -1 ? 63 : l === 27 ? 35 : 0; // PC1 l += l < -5 ? 65 : l < -3 ? 31 : l < -1 ? 63 : l === 27 ? 35 : 0; // PC1
const m = l & 0x7; const m = l & 0x7;
pc1m[j] = ((keyBlock[l >>> 3] & (1<<m)) !== 0) ? 1: 0; pc1m[j] = ((password[l >>> 3] & (1<<m)) !== 0) ? 1: 0;
} }
for (let i = 0; i < 16; ++i) { for (let i = 0; i < 16; ++i) {
@ -164,21 +165,21 @@ export default function DES(passwd) {
for (let i = 0, rawi = 0, KnLi = 0; i < 16; ++i) { for (let i = 0, rawi = 0, KnLi = 0; i < 16; ++i) {
const raw0 = kn[rawi++]; const raw0 = kn[rawi++];
const raw1 = kn[rawi++]; const raw1 = kn[rawi++];
keys[KnLi] = (raw0 & 0x00fc0000) << 6; this.keys[KnLi] = (raw0 & 0x00fc0000) << 6;
keys[KnLi] |= (raw0 & 0x00000fc0) << 10; this.keys[KnLi] |= (raw0 & 0x00000fc0) << 10;
keys[KnLi] |= (raw1 & 0x00fc0000) >>> 10; this.keys[KnLi] |= (raw1 & 0x00fc0000) >>> 10;
keys[KnLi] |= (raw1 & 0x00000fc0) >>> 6; this.keys[KnLi] |= (raw1 & 0x00000fc0) >>> 6;
++KnLi; ++KnLi;
keys[KnLi] = (raw0 & 0x0003f000) << 12; this.keys[KnLi] = (raw0 & 0x0003f000) << 12;
keys[KnLi] |= (raw0 & 0x0000003f) << 16; this.keys[KnLi] |= (raw0 & 0x0000003f) << 16;
keys[KnLi] |= (raw1 & 0x0003f000) >>> 4; this.keys[KnLi] |= (raw1 & 0x0003f000) >>> 4;
keys[KnLi] |= (raw1 & 0x0000003f); this.keys[KnLi] |= (raw1 & 0x0000003f);
++KnLi; ++KnLi;
} }
} }
// Encrypt 8 bytes of text // Encrypt 8 bytes of text
function enc8(text) { enc8(text) {
const b = text.slice(); const b = text.slice();
let i = 0, l, r, x; // left, right, accumulator let i = 0, l, r, x; // left, right, accumulator
@ -206,24 +207,24 @@ export default function DES(passwd) {
for (let i = 0, keysi = 0; i < 8; ++i) { for (let i = 0, keysi = 0; i < 8; ++i) {
x = (r << 28) | (r >>> 4); x = (r << 28) | (r >>> 4);
x ^= keys[keysi++]; x ^= this.keys[keysi++];
let fval = SP7[x & 0x3f]; let fval = SP7[x & 0x3f];
fval |= SP5[(x >>> 8) & 0x3f]; fval |= SP5[(x >>> 8) & 0x3f];
fval |= SP3[(x >>> 16) & 0x3f]; fval |= SP3[(x >>> 16) & 0x3f];
fval |= SP1[(x >>> 24) & 0x3f]; fval |= SP1[(x >>> 24) & 0x3f];
x = r ^ keys[keysi++]; x = r ^ this.keys[keysi++];
fval |= SP8[x & 0x3f]; fval |= SP8[x & 0x3f];
fval |= SP6[(x >>> 8) & 0x3f]; fval |= SP6[(x >>> 8) & 0x3f];
fval |= SP4[(x >>> 16) & 0x3f]; fval |= SP4[(x >>> 16) & 0x3f];
fval |= SP2[(x >>> 24) & 0x3f]; fval |= SP2[(x >>> 24) & 0x3f];
l ^= fval; l ^= fval;
x = (l << 28) | (l >>> 4); x = (l << 28) | (l >>> 4);
x ^= keys[keysi++]; x ^= this.keys[keysi++];
fval = SP7[x & 0x3f]; fval = SP7[x & 0x3f];
fval |= SP5[(x >>> 8) & 0x3f]; fval |= SP5[(x >>> 8) & 0x3f];
fval |= SP3[(x >>> 16) & 0x3f]; fval |= SP3[(x >>> 16) & 0x3f];
fval |= SP1[(x >>> 24) & 0x3f]; fval |= SP1[(x >>> 24) & 0x3f];
x = l ^ keys[keysi++]; x = l ^ this.keys[keysi++];
fval |= SP8[x & 0x0000003f]; fval |= SP8[x & 0x0000003f];
fval |= SP6[(x >>> 8) & 0x3f]; fval |= SP6[(x >>> 8) & 0x3f];
fval |= SP4[(x >>> 16) & 0x3f]; fval |= SP4[(x >>> 16) & 0x3f];
@ -259,11 +260,7 @@ export default function DES(passwd) {
} }
// Encrypt 16 bytes of text using passwd as key // Encrypt 16 bytes of text using passwd as key
function encrypt(t) { encrypt(t) {
return enc8(t.slice(0, 8)).concat(enc8(t.slice(8, 16))); return this.enc8(t.slice(0, 8)).concat(this.enc8(t.slice(8, 16)));
} }
setKeys(passwd); // Setup keys
return {'encrypt': encrypt}; // Public interface
} }

7
kasmweb/core/rfb.js
Unescape Escape View File

@ -1914,11 +1914,8 @@ export default class RFB extends EventTargetMixin {
} }
static genDES(password, challenge) { static genDES(password, challenge) {
const passwd = []; const passwordChars = password.split('').map(c => c.charCodeAt(0));
for (let i = 0; i < password.length; i++) { return (new DES(passwordChars)).encrypt(challenge);
passwd.push(password.charCodeAt(i));
}
return (new DES(passwd)).encrypt(challenge);
} }
} }

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