Added RC4/MD4 alternatives for NodeJS v17, #

This commit is contained in:
Ylian Saint-Hilaire 2022-05-01 02:02:49 -07:00
parent e526e60f72
commit b77fe3da66
4 changed files with 668 additions and 7 deletions

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@ -211,6 +211,8 @@
<Compile Include="rdp\protocol\x224.js" />
<Compile Include="rdp\security\index.js" />
<Compile Include="rdp\security\jsbn.js" />
<Compile Include="rdp\security\md4.js" />
<Compile Include="rdp\security\rc4.js" />
<Compile Include="rdp\security\rsa.js" />
<Compile Include="rdp\security\x509.js" />
<Compile Include="swarmserver.js" />

View File

@ -273,7 +273,13 @@ function decodeTargetInfo(targetInfoBuf) {
function bufToArr(b) { var r = []; for (var i = 0; i < b.length; i++) { r.push(b.readUInt8(i)); } return r; } // For unit testing
function compareArray(a, b) { if (a.length != b.length) return false; for (var i = 0; i < a.length; i++) { if (a[i] != b[i]) return false; } return true; } // For unit testing
function toUnicode(str) { return Buffer.from(str, 'ucs2'); }
function md4(str) { return crypto.createHash('md4').update(str).digest(); }
function md4(buffer) {
try {
return crypto.createHash('md4').update(buffer).digest(); // Built in NodeJS MD4, this does not work starting with NodeJS v17
} catch (ex) {
return Buffer.from(require('../security/md4').array(buffer.toString('binary'))); // This is the alternative if NodeJS does not support MD4
}
}
function md5(str) { return crypto.createHash('md5').update(str).digest(); }
function hmac_md5(key, data) { return crypto.createHmac('md5', key).update(data).digest(); }
function ntowfv2(password, user, domain) { return hmac_md5(md4(toUnicode(password)), toUnicode(user.toUpperCase() + domain)); }
@ -290,7 +296,20 @@ function compute_response_v2(response_key_nt, response_key_lm, server_challenge,
return [nt_challenge_response, lm_challenge_response, session_base_key];
}
function kx_key_v2(session_base_key, _lm_challenge_response, _server_challenge) { return session_base_key; }
function rc4k(key, data) { return crypto.createCipheriv('rc4', key, null).update(data); }
function rc4k(key, data) { return createRC4(key).update(data); }
function createRC4(key) {
const obj = {};
try {
obj.n = crypto.createCipheriv('rc4', key, null); // Built in NodeJS RC4, this does not work starting with NodeJS v17
obj.update = function(x) { return obj.n.update(x); }
} catch (ex) {
const RC4 = require('../security/rc4'); // This is the alternative if NodeJS does not support RC4
obj.r = new RC4(key.toString('binary'));
obj.update = function (x) { return Buffer.from(obj.r.encrypt(x.toString('binary')), 'hex'); }
}
return obj;
}
function create_negotiate_message() {
return negotiate_message(
@ -377,8 +396,8 @@ function build_security_interface(ntlm) {
obj.verify_key = sign_key(ntlm.exported_session_key, false);
const client_sealing_key = seal_key(ntlm.exported_session_key, true);
const server_sealing_key = seal_key(ntlm.exported_session_key, false);
obj.encrypt = crypto.createCipheriv('rc4', client_sealing_key, null);
obj.decrypt = crypto.createCipheriv('rc4', server_sealing_key, null);
obj.encrypt = createRC4(client_sealing_key);
obj.decrypt = createRC4(server_sealing_key);
}
obj.seq_num = 0;
@ -618,7 +637,6 @@ function read_challenge_message(ntlm, derBuffer) {
return r;
}
function unitTest() {
console.log('--- Starting RDP NLA Unit Tests');
@ -669,7 +687,7 @@ function unitTest() {
console.log(compareArray(bufToArr(r), [64, 125, 160, 17, 144, 165, 62, 226, 22, 125, 128, 31, 103, 141, 55, 40]) ? "seal_key 2 passed." : "seal_key 2 failed.");
// Test signature function
var rc4 = crypto.createCipheriv('rc4', Buffer.from("foo"), null);
var rc4 = createRC4(Buffer.from("foo"));
r = mac(rc4, Buffer.from("bar"), 0, Buffer.from("data"));
console.log(compareArray(bufToArr(r), [1, 0, 0, 0, 77, 211, 144, 84, 51, 242, 202, 176, 0, 0, 0, 0]) ? "Signature passed." : "Signature failed.");
@ -679,7 +697,7 @@ function unitTest() {
console.log(compareArray(bufToArr(buf), [78, 84, 76, 77, 83, 83, 80, 0, 3, 0, 0, 0, 3, 0, 3, 0, 80, 0, 0, 0, 3, 0, 3, 0, 83, 0, 0, 0, 6, 0, 6, 0, 86, 0, 0, 0, 4, 0, 4, 0, 92, 0, 0, 0, 11, 0, 11, 0, 96, 0, 0, 0, 3, 0, 3, 0, 107, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 102, 111, 111, 102, 111, 111, 100, 111, 109, 97, 105, 110, 117, 115, 101, 114, 119, 111, 114, 107, 115, 116, 97, 116, 105, 111, 110, 102, 111, 111]) ? "Challenge message passed." : "Challenge message failed.");
// Test RC4
rc4 = crypto.createCipheriv('rc4', Buffer.from("foo"), null);
rc4 = createRC4(Buffer.from("foo"));
r = rc4.update(Buffer.from("bar"));
console.log(compareArray(bufToArr(r), [201, 67, 159]) ? "RC4 1 passed." : "RC4 1 failed.");
r = rc4.update(Buffer.from("bar"));

571
rdp/security/md4.js Normal file
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@ -0,0 +1,571 @@
/**
* [js-md4]{@link https://github.com/emn178/js-md4}
*
* @namespace md4
* @version 0.3.2
* @author Yi-Cyuan Chen [emn178@gmail.com]
* @copyright Yi-Cyuan Chen 2015-2027
* @license MIT
*/
/*jslint bitwise: true */
(function () {
'use strict';
var root = typeof window === 'object' ? window : {};
var NODE_JS = !root.JS_MD4_NO_NODE_JS && typeof process === 'object' && process.versions && process.versions.node;
if (NODE_JS) {
root = global;
}
var COMMON_JS = !root.JS_MD4_NO_COMMON_JS && typeof module === 'object' && module.exports;
var AMD = typeof define === 'function' && define.amd;
var ARRAY_BUFFER = !root.JS_MD4_NO_ARRAY_BUFFER && typeof ArrayBuffer !== 'undefined';
var HEX_CHARS = '0123456789abcdef'.split('');
var EXTRA = [128, 32768, 8388608, -2147483648];
var SHIFT = [0, 8, 16, 24];
var OUTPUT_TYPES = ['hex', 'array', 'digest', 'buffer', 'arrayBuffer'];
var blocks = [], buffer8;
if (ARRAY_BUFFER) {
var buffer = new ArrayBuffer(68);
buffer8 = new Uint8Array(buffer);
blocks = new Uint32Array(buffer);
}
/**
* @method hex
* @memberof md4
* @description Output hash as hex string
* @param {String|Array|Uint8Array|ArrayBuffer} message message to hash
* @returns {String} Hex string
* @example
* md4.hex('The quick brown fox jumps over the lazy dog');
* // equal to
* md4('The quick brown fox jumps over the lazy dog');
*/
/**
* @method digest
* @memberof md4
* @description Output hash as bytes array
* @param {String|Array|Uint8Array|ArrayBuffer} message message to hash
* @returns {Array} Bytes array
* @example
* md4.digest('The quick brown fox jumps over the lazy dog');
*/
/**
* @method array
* @memberof md4
* @description Output hash as bytes array
* @param {String|Array|Uint8Array|ArrayBuffer} message message to hash
* @returns {Array} Bytes array
* @example
* md4.array('The quick brown fox jumps over the lazy dog');
*/
/**
* @method buffer
* @memberof md4
* @description Output hash as ArrayBuffer
* @param {String|Array|Uint8Array|ArrayBuffer} message message to hash
* @returns {ArrayBuffer} ArrayBuffer
* @example
* md4.buffer('The quick brown fox jumps over the lazy dog');
*/
var createOutputMethod = function (outputType) {
return function(message) {
return new Md4(true).update(message)[outputType]();
}
};
/**
* @method create
* @memberof md4
* @description Create Md4 object
* @returns {Md4} MD4 object.
* @example
* var hash = md4.create();
*/
/**
* @method update
* @memberof md4
* @description Create and update Md4 object
* @param {String|Array|Uint8Array|ArrayBuffer} message message to hash
* @returns {Md4} MD4 object.
* @example
* var hash = md4.update('The quick brown fox jumps over the lazy dog');
* // equal to
* var hash = md4.create();
* hash.update('The quick brown fox jumps over the lazy dog');
*/
var createMethod = function () {
var method = createOutputMethod('hex');
method.create = function () {
return new Md4();
};
method.update = function (message) {
return method.create().update(message);
};
for (var i = 0; i < OUTPUT_TYPES.length; ++i) {
var type = OUTPUT_TYPES[i];
method[type] = createOutputMethod(type);
}
return method;
};
var nodeWrap = function (method) {
var crypto = require('crypto');
var Buffer = require('buffer').Buffer;
var nodeMethod = function (message) {
if (typeof message === 'string') {
return crypto.createHash('md4').update(message, 'utf8').digest('hex');
} else if (ARRAY_BUFFER && message instanceof ArrayBuffer) {
message = new Uint8Array(message);
} else if (message.length === undefined) {
return method(message);
}
return crypto.createHash('md4').update(new Buffer(message)).digest('hex');
};
return nodeMethod;
};
/**
* Md4 class
* @class Md4
* @description This is internal class.
* @see {@link md4.create}
*/
function Md4(sharedMemory) {
if (sharedMemory) {
blocks[0] = blocks[16] = blocks[1] = blocks[2] = blocks[3] =
blocks[4] = blocks[5] = blocks[6] = blocks[7] =
blocks[8] = blocks[9] = blocks[10] = blocks[11] =
blocks[12] = blocks[13] = blocks[14] = blocks[15] = 0;
this.blocks = blocks;
this.buffer8 = buffer8;
} else {
if (ARRAY_BUFFER) {
var buffer = new ArrayBuffer(68);
this.buffer8 = new Uint8Array(buffer);
this.blocks = new Uint32Array(buffer);
} else {
this.blocks = [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0];
}
}
this.h0 = this.h1 = this.h2 = this.h3 = this.start = this.bytes = 0;
this.finalized = this.hashed = false;
this.first = true;
}
/**
* @method update
* @memberof Md4
* @instance
* @description Update hash
* @param {String|Array|Uint8Array|ArrayBuffer} message message to hash
* @returns {Md4} MD4 object.
* @see {@link md4.update}
*/
Md4.prototype.update = function (message) {
if (this.finalized) {
return;
}
var notString = typeof message !== 'string';
if (notString && ARRAY_BUFFER && message instanceof ArrayBuffer) {
message = new Uint8Array(message);
}
var code, index = 0, i, length = message.length || 0, blocks = this.blocks;
var buffer8 = this.buffer8;
while (index < length) {
if (this.hashed) {
this.hashed = false;
blocks[0] = blocks[16];
blocks[16] = blocks[1] = blocks[2] = blocks[3] =
blocks[4] = blocks[5] = blocks[6] = blocks[7] =
blocks[8] = blocks[9] = blocks[10] = blocks[11] =
blocks[12] = blocks[13] = blocks[14] = blocks[15] = 0;
}
if (notString) {
if (ARRAY_BUFFER) {
for (i = this.start; index < length && i < 64; ++index) {
buffer8[i++] = message[index];
}
} else {
for (i = this.start; index < length && i < 64; ++index) {
blocks[i >> 2] |= message[index] << SHIFT[i++ & 3];
}
}
} else {
if (ARRAY_BUFFER) {
for (i = this.start; index < length && i < 64; ++index) {
code = message.charCodeAt(index);
if (code < 0x80) {
buffer8[i++] = code;
} else if (code < 0x800) {
buffer8[i++] = 0xc0 | (code >> 6);
buffer8[i++] = 0x80 | (code & 0x3f);
} else if (code < 0xd800 || code >= 0xe000) {
buffer8[i++] = 0xe0 | (code >> 12);
buffer8[i++] = 0x80 | ((code >> 6) & 0x3f);
buffer8[i++] = 0x80 | (code & 0x3f);
} else {
code = 0x10000 + (((code & 0x3ff) << 10) | (message.charCodeAt(++index) & 0x3ff));
buffer8[i++] = 0xf0 | (code >> 18);
buffer8[i++] = 0x80 | ((code >> 12) & 0x3f);
buffer8[i++] = 0x80 | ((code >> 6) & 0x3f);
buffer8[i++] = 0x80 | (code & 0x3f);
}
}
} else {
for (i = this.start; index < length && i < 64; ++index) {
code = message.charCodeAt(index);
if (code < 0x80) {
blocks[i >> 2] |= code << SHIFT[i++ & 3];
} else if (code < 0x800) {
blocks[i >> 2] |= (0xc0 | (code >> 6)) << SHIFT[i++ & 3];
blocks[i >> 2] |= (0x80 | (code & 0x3f)) << SHIFT[i++ & 3];
} else if (code < 0xd800 || code >= 0xe000) {
blocks[i >> 2] |= (0xe0 | (code >> 12)) << SHIFT[i++ & 3];
blocks[i >> 2] |= (0x80 | ((code >> 6) & 0x3f)) << SHIFT[i++ & 3];
blocks[i >> 2] |= (0x80 | (code & 0x3f)) << SHIFT[i++ & 3];
} else {
code = 0x10000 + (((code & 0x3ff) << 10) | (message.charCodeAt(++index) & 0x3ff));
blocks[i >> 2] |= (0xf0 | (code >> 18)) << SHIFT[i++ & 3];
blocks[i >> 2] |= (0x80 | ((code >> 12) & 0x3f)) << SHIFT[i++ & 3];
blocks[i >> 2] |= (0x80 | ((code >> 6) & 0x3f)) << SHIFT[i++ & 3];
blocks[i >> 2] |= (0x80 | (code & 0x3f)) << SHIFT[i++ & 3];
}
}
}
}
this.lastByteIndex = i;
this.bytes += i - this.start;
if (i >= 64) {
this.start = i - 64;
this.hash();
this.hashed = true;
} else {
this.start = i;
}
}
return this;
};
Md4.prototype.finalize = function () {
if (this.finalized) {
return;
}
this.finalized = true;
var blocks = this.blocks, i = this.lastByteIndex;
blocks[i >> 2] |= EXTRA[i & 3];
if (i >= 56) {
if (!this.hashed) {
this.hash();
}
blocks[0] = blocks[16];
blocks[16] = blocks[1] = blocks[2] = blocks[3] =
blocks[4] = blocks[5] = blocks[6] = blocks[7] =
blocks[8] = blocks[9] = blocks[10] = blocks[11] =
blocks[12] = blocks[13] = blocks[14] = blocks[15] = 0;
}
blocks[14] = this.bytes << 3;
this.hash();
};
Md4.prototype.hash = function () {
var a, b, c, d, ab, bc, cd, da, blocks = this.blocks;
if (this.first) {
a = blocks[0] - 1;
a = (a << 3) | (a >>> 29);
d = ((a & 0xefcdab89) | (~a & 0x98badcfe)) + blocks[1] + 271733878;
d = (d << 7) | (d >>> 25);
c = ((d & a) | (~d & 0xefcdab89)) + blocks[2] - 1732584194;
c = (c << 11) | (c >>> 21);
b = ((c & d) | (~c & a)) + blocks[3] - 271733879;
b = (b << 19) | (b >>> 13);
} else {
a = this.h0;
b = this.h1;
c = this.h2;
d = this.h3;
a += ((b & c) | (~b & d)) + blocks[0];
a = (a << 3) | (a >>> 29);
d += ((a & b) | (~a & c)) + blocks[1];
d = (d << 7) | (d >>> 25);
c += ((d & a) | (~d & b)) + blocks[2];
c = (c << 11) | (c >>> 21);
b += ((c & d) | (~c & a)) + blocks[3];
b = (b << 19) | (b >>> 13);
}
a += ((b & c) | (~b & d)) + blocks[4];
a = (a << 3) | (a >>> 29);
d += ((a & b) | (~a & c)) + blocks[5];
d = (d << 7) | (d >>> 25);
c += ((d & a) | (~d & b)) + blocks[6];
c = (c << 11) | (c >>> 21);
b += ((c & d) | (~c & a)) + blocks[7];
b = (b << 19) | (b >>> 13);
a += ((b & c) | (~b & d)) + blocks[8];
a = (a << 3) | (a >>> 29);
d += ((a & b) | (~a & c)) + blocks[9];
d = (d << 7) | (d >>> 25);
c += ((d & a) | (~d & b)) + blocks[10];
c = (c << 11) | (c >>> 21);
b += ((c & d) | (~c & a)) + blocks[11];
b = (b << 19) | (b >>> 13);
a += ((b & c) | (~b & d)) + blocks[12];
a = (a << 3) | (a >>> 29);
d += ((a & b) | (~a & c)) + blocks[13];
d = (d << 7) | (d >>> 25);
c += ((d & a) | (~d & b)) + blocks[14];
c = (c << 11) | (c >>> 21);
b += ((c & d) | (~c & a)) + blocks[15];
b = (b << 19) | (b >>> 13);
bc = b & c;
a += (bc | (b & d) | (c & d)) + blocks[0] + 1518500249;
a = (a << 3) | (a >>> 29);
ab = a & b;
d += (ab | (a & c) | bc) + blocks[4] + 1518500249;
d = (d << 5) | (d >>> 27);
da = d & a;
c += (da | (d & b) | ab) + blocks[8] + 1518500249;
c = (c << 9) | (c >>> 23);
cd = c & d;
b += (cd | (c & a) | da) + blocks[12] + 1518500249;
b = (b << 13) | (b >>> 19);
bc = b & c;
a += (bc | (b & d) | cd) + blocks[1] + 1518500249;
a = (a << 3) | (a >>> 29);
ab = a & b;
d += (ab | (a & c) | bc) + blocks[5] + 1518500249;
d = (d << 5) | (d >>> 27);
da = d & a;
c += (da | (d & b) | ab) + blocks[9] + 1518500249;
c = (c << 9) | (c >>> 23);
cd = c & d;
b += (cd | (c & a) | da) + blocks[13] + 1518500249;
b = (b << 13) | (b >>> 19);
bc = b & c;
a += (bc | (b & d) | cd) + blocks[2] + 1518500249;
a = (a << 3) | (a >>> 29);
ab = a & b;
d += (ab | (a & c) | bc) + blocks[6] + 1518500249;
d = (d << 5) | (d >>> 27);
da = d & a;
c += (da | (d & b) | ab) + blocks[10] + 1518500249;
c = (c << 9) | (c >>> 23);
cd = c & d;
b += (cd | (c & a) | da) + blocks[14] + 1518500249;
b = (b << 13) | (b >>> 19);
bc = b & c;
a += (bc | (b & d) | cd) + blocks[3] + 1518500249;
a = (a << 3) | (a >>> 29);
ab = a & b;
d += (ab | (a & c) | bc) + blocks[7] + 1518500249;
d = (d << 5) | (d >>> 27);
da = d & a;
c += (da | (d & b) | ab) + blocks[11] + 1518500249;
c = (c << 9) | (c >>> 23);
b += ((c & d) | (c & a) | da) + blocks[15] + 1518500249;
b = (b << 13) | (b >>> 19);
bc = b ^ c;
a += (bc ^ d) + blocks[0] + 1859775393;
a = (a << 3) | (a >>> 29);
d += (bc ^ a) + blocks[8] + 1859775393;
d = (d << 9) | (d >>> 23);
da = d ^ a;
c += (da ^ b) + blocks[4] + 1859775393;
c = (c << 11) | (c >>> 21);
b += (da ^ c) + blocks[12] + 1859775393;
b = (b << 15) | (b >>> 17);
bc = b ^ c;
a += (bc ^ d) + blocks[2] + 1859775393;
a = (a << 3) | (a >>> 29);
d += (bc ^ a) + blocks[10] + 1859775393;
d = (d << 9) | (d >>> 23);
da = d ^ a;
c += (da ^ b) + blocks[6] + 1859775393;
c = (c << 11) | (c >>> 21);
b += (da ^ c) + blocks[14] + 1859775393;
b = (b << 15) | (b >>> 17);
bc = b ^ c;
a += (bc ^ d) + blocks[1] + 1859775393;
a = (a << 3) | (a >>> 29);
d += (bc ^ a) + blocks[9] + 1859775393;
d = (d << 9) | (d >>> 23);
da = d ^ a;
c += (da ^ b) + blocks[5] + 1859775393;
c = (c << 11) | (c >>> 21);
b += (da ^ c) + blocks[13] + 1859775393;
b = (b << 15) | (b >>> 17);
bc = b ^ c;
a += (bc ^ d) + blocks[3] + 1859775393;
a = (a << 3) | (a >>> 29);
d += (bc ^ a) + blocks[11] + 1859775393;
d = (d << 9) | (d >>> 23);
da = d ^ a;
c += (da ^ b) + blocks[7] + 1859775393;
c = (c << 11) | (c >>> 21);
b += (da ^ c) + blocks[15] + 1859775393;
b = (b << 15) | (b >>> 17);
if (this.first) {
this.h0 = a + 1732584193 << 0;
this.h1 = b - 271733879 << 0;
this.h2 = c - 1732584194 << 0;
this.h3 = d + 271733878 << 0;
this.first = false;
} else {
this.h0 = this.h0 + a << 0;
this.h1 = this.h1 + b << 0;
this.h2 = this.h2 + c << 0;
this.h3 = this.h3 + d << 0;
}
};
/**
* @method hex
* @memberof Md4
* @instance
* @description Output hash as hex string
* @returns {String} Hex string
* @see {@link md4.hex}
* @example
* hash.hex();
*/
Md4.prototype.hex = function () {
this.finalize();
var h0 = this.h0, h1 = this.h1, h2 = this.h2, h3 = this.h3;
return HEX_CHARS[(h0 >> 4) & 0x0F] + HEX_CHARS[h0 & 0x0F] +
HEX_CHARS[(h0 >> 12) & 0x0F] + HEX_CHARS[(h0 >> 8) & 0x0F] +
HEX_CHARS[(h0 >> 20) & 0x0F] + HEX_CHARS[(h0 >> 16) & 0x0F] +
HEX_CHARS[(h0 >> 28) & 0x0F] + HEX_CHARS[(h0 >> 24) & 0x0F] +
HEX_CHARS[(h1 >> 4) & 0x0F] + HEX_CHARS[h1 & 0x0F] +
HEX_CHARS[(h1 >> 12) & 0x0F] + HEX_CHARS[(h1 >> 8) & 0x0F] +
HEX_CHARS[(h1 >> 20) & 0x0F] + HEX_CHARS[(h1 >> 16) & 0x0F] +
HEX_CHARS[(h1 >> 28) & 0x0F] + HEX_CHARS[(h1 >> 24) & 0x0F] +
HEX_CHARS[(h2 >> 4) & 0x0F] + HEX_CHARS[h2 & 0x0F] +
HEX_CHARS[(h2 >> 12) & 0x0F] + HEX_CHARS[(h2 >> 8) & 0x0F] +
HEX_CHARS[(h2 >> 20) & 0x0F] + HEX_CHARS[(h2 >> 16) & 0x0F] +
HEX_CHARS[(h2 >> 28) & 0x0F] + HEX_CHARS[(h2 >> 24) & 0x0F] +
HEX_CHARS[(h3 >> 4) & 0x0F] + HEX_CHARS[h3 & 0x0F] +
HEX_CHARS[(h3 >> 12) & 0x0F] + HEX_CHARS[(h3 >> 8) & 0x0F] +
HEX_CHARS[(h3 >> 20) & 0x0F] + HEX_CHARS[(h3 >> 16) & 0x0F] +
HEX_CHARS[(h3 >> 28) & 0x0F] + HEX_CHARS[(h3 >> 24) & 0x0F];
};
/**
* @method toString
* @memberof Md4
* @instance
* @description Output hash as hex string
* @returns {String} Hex string
* @see {@link md4.hex}
* @example
* hash.toString();
*/
Md4.prototype.toString = Md4.prototype.hex;
/**
* @method digest
* @memberof Md4
* @instance
* @description Output hash as bytes array
* @returns {Array} Bytes array
* @see {@link md4.digest}
* @example
* hash.digest();
*/
Md4.prototype.digest = function() {
this.finalize();
var h0 = this.h0, h1 = this.h1, h2 = this.h2, h3 = this.h3;
return [
h0 & 0xFF, (h0 >> 8) & 0xFF, (h0 >> 16) & 0xFF, (h0 >> 24) & 0xFF,
h1 & 0xFF, (h1 >> 8) & 0xFF, (h1 >> 16) & 0xFF, (h1 >> 24) & 0xFF,
h2 & 0xFF, (h2 >> 8) & 0xFF, (h2 >> 16) & 0xFF, (h2 >> 24) & 0xFF,
h3 & 0xFF, (h3 >> 8) & 0xFF, (h3 >> 16) & 0xFF, (h3 >> 24) & 0xFF
];
};
/**
* @method array
* @memberof Md4
* @instance
* @description Output hash as bytes array
* @returns {Array} Bytes array
* @see {@link md4.array}
* @example
* hash.array();
*/
Md4.prototype.array = Md4.prototype.digest;
/**
* @method arrayBuffer
* @memberof Md4
* @instance
* @description Output hash as ArrayBuffer
* @returns {ArrayBuffer} ArrayBuffer
* @see {@link md4.arrayBuffer}
* @example
* hash.arrayBuffer();
*/
Md4.prototype.arrayBuffer = function() {
this.finalize();
var buffer = new ArrayBuffer(16);
var blocks = new Uint32Array(buffer);
blocks[0] = this.h0;
blocks[1] = this.h1;
blocks[2] = this.h2;
blocks[3] = this.h3;
return buffer;
};
/**
* @method buffer
* @deprecated This maybe confuse with Buffer in node.js. Please use arrayBuffer instead.
* @memberof Md4
* @instance
* @description Output hash as ArrayBuffer
* @returns {ArrayBuffer} ArrayBuffer
* @see {@link md4.buffer}
* @example
* hash.buffer();
*/
Md4.prototype.buffer = Md4.prototype.arrayBuffer;
var exports = createMethod();
if (COMMON_JS) {
module.exports = exports;
} else {
/**
* @method md4
* @description MD4 hash function, export to global in browsers.
* @param {String|Array|Uint8Array|ArrayBuffer} message message to hash
* @returns {String} md4 hashes
* @example
* md4(''); // 31d6cfe0d16ae931b73c59d7e0c089c0
* md4('The quick brown fox jumps over the lazy dog'); // 1bee69a46ba811185c194762abaeae90
* md4('The quick brown fox jumps over the lazy dog.'); // 2812c6c7136898c51f6f6739ad08750e
*
* // It also supports UTF-8 encoding
* md4('中文'); // 223088bf7bd45a16436b15360c5fc5a0
*
* // It also supports byte `Array`, `Uint8Array`, `ArrayBuffer`
* md4([]); // 31d6cfe0d16ae931b73c59d7e0c089c0
* md4(new Uint8Array([])); // 31d6cfe0d16ae931b73c59d7e0c089c0
*/
root.md4 = exports;
if (AMD) {
define(function () {
return exports;
});
}
}
})();

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function RC4(key) {
this.privateKey = keySetup(key);
this.byteStream = byteStreamGenerator(this.privateKey.slice(0));
}
/**
* Converts the text into an array of the characters numeric Unicode values
* @param {String} text, the text to convert
* @return {Array} the array of Unicode values
*/
function convert(text) {
var codes = [];
for (var i = 0, ii = text.length; i < ii; i++) { codes.push(text.charCodeAt(i)); }
return codes;
}
/**
* Sets up the key to use with the byte stream
* @param {String} key, The key that you want to use
* @return {Array}, the key stream which with be used in the byteStreamGenerator
*/
function keySetup(key) {
var K = [...Array(256).keys()], j = 0, key = convert(key);
for (var i = 0, ii = K.length; i < ii; i++) {
j = (j + K[i] + key[i % key.length]) % 256;
[K[i], K[j]] = [K[j], K[i]];
}
return K;
}
/**
* byteStreamGenerator uses ES6 generators which will be 'XOR-ed' to encrypt and decrypt
* @param {Array} K, the array generated from the keySetup
* @yield {Integer}, the current value which will be 'XOR-ed' to encrypt or decrypt
*/
var byteStreamGenerator = function* (K) {
var i = 0, j = 0;
while (true) {
i = (i + 1) % 256;
j = (j + K[i]) % 256;
[K[i], K[j]] = [K[j], K[i]];
yield (K[(K[i] + K[j]) % 256]);
}
}
/**
* Encrypts the input text
* @param {String} input, the text to encrypt
* @return {String}, the encrypted text
*/
RC4.prototype.encrypt = function (input) {
var outputText = '';
for (var i = 0, ii = input.length; i < ii; i++) { outputText += ('00' + (input.charCodeAt(i) ^ this.byteStream.next().value).toString(16)).substr(-2); }
return outputText;
}
/**
* Decrypts the input text
* @param {String} input, the text to decrypt
* @return {String}, the decrypted text (if the same key was used)
*/
RC4.prototype.decrypt = function (input) {
var outputText = '';
input = input.match(/[a-z0-9]{2}/gi);
for (var i = 0, ii = input.length; i < ii; i++) { outputText += String.fromCharCode((parseInt(input[i], 16) ^ byteStream.next().value)); }
return outputText;
}
module.exports = RC4;