@meat-nuggets/wireguard-tools
Version:
The best way to interact with WireGuard from Node
160 lines (159 loc) • 4.61 kB
JavaScript
;
// License below retained on purpose
var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
if (k2 === undefined) k2 = k;
Object.defineProperty(o, k2, { enumerable: true, get: function() { return m[k]; } });
}) : (function(o, m, k, k2) {
if (k2 === undefined) k2 = k;
o[k2] = m[k];
}));
var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {
Object.defineProperty(o, "default", { enumerable: true, value: v });
}) : function(o, v) {
o["default"] = v;
});
var __importStar = (this && this.__importStar) || function (mod) {
if (mod && mod.__esModule) return mod;
var result = {};
if (mod != null) for (var k in mod) if (k !== "default" && Object.prototype.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);
__setModuleDefault(result, mod);
return result;
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.generatePrivateKey = exports.generatePresharedKey = exports.generatePublicKey = void 0;
/*! SPDX-License-Identifier: GPL-2.0
*
* Copyright (C) 2015-2020 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
*/
var crypto = __importStar(require("crypto"));
function gf(init) {
var r = new Float64Array(16);
if (init) {
for (var i = 0; i < init.length; ++i)
r[i] = init[i];
}
return r;
}
function pack(o, n) {
var b, m = gf(), t = gf();
for (var i = 0; i < 16; ++i)
t[i] = n[i];
carry(t);
carry(t);
carry(t);
for (var j = 0; j < 2; ++j) {
m[0] = t[0] - 0xffed;
for (var i = 1; i < 15; ++i) {
m[i] = t[i] - 0xffff - ((m[i - 1] >> 16) & 1);
m[i - 1] &= 0xffff;
}
m[15] = t[15] - 0x7fff - ((m[14] >> 16) & 1);
b = (m[15] >> 16) & 1;
m[14] &= 0xffff;
cswap(t, m, 1 - b);
}
for (var i = 0; i < 16; ++i) {
o[2 * i] = t[i] & 0xff;
o[2 * i + 1] = t[i] >> 8;
}
}
function carry(o) {
for (var i = 0; i < 16; ++i) {
o[(i + 1) % 16] += (i < 15 ? 1 : 38) * Math.floor(o[i] / 65536);
o[i] &= 0xffff;
}
}
function cswap(p, q, b) {
var t, c = ~(b - 1);
for (var i = 0; i < 16; ++i) {
t = c & (p[i] ^ q[i]);
p[i] ^= t;
q[i] ^= t;
}
}
function add(o, a, b) {
for (var i = 0; i < 16; ++i)
o[i] = (a[i] + b[i]) | 0;
}
function subtract(o, a, b) {
for (var i = 0; i < 16; ++i)
o[i] = (a[i] - b[i]) | 0;
}
function multmod(o, a, b) {
var t = new Float64Array(31);
for (var i = 0; i < 16; ++i) {
for (var j = 0; j < 16; ++j)
t[i + j] += a[i] * b[j];
}
for (var i = 0; i < 15; ++i)
t[i] += 38 * t[i + 16];
for (var i = 0; i < 16; ++i)
o[i] = t[i];
carry(o);
carry(o);
}
function invert(o, i) {
var c = gf();
for (var a = 0; a < 16; ++a)
c[a] = i[a];
for (var a = 253; a >= 0; --a) {
multmod(c, c, c);
if (a !== 2 && a !== 4)
multmod(c, c, i);
}
for (var a = 0; a < 16; ++a)
o[a] = c[a];
}
function clamp(z) {
z[31] = (z[31] & 127) | 64;
z[0] &= 248;
}
function generatePublicKey(privateKey) {
var r, z = new Uint8Array(32);
var a = gf([1]), b = gf([9]), c = gf(), d = gf([1]), e = gf(), f = gf(), _121665 = gf([0xdb41, 1]), _9 = gf([9]);
for (var i = 0; i < 32; ++i)
z[i] = privateKey[i];
clamp(z);
for (var i = 254; i >= 0; --i) {
r = (z[i >>> 3] >>> (i & 7)) & 1;
cswap(a, b, r);
cswap(c, d, r);
add(e, a, c);
subtract(a, a, c);
add(c, b, d);
subtract(b, b, d);
multmod(d, e, e);
multmod(f, a, a);
multmod(a, c, a);
multmod(c, b, e);
add(e, a, c);
subtract(a, a, c);
multmod(b, a, a);
subtract(c, d, f);
multmod(a, c, _121665);
add(a, a, d);
multmod(c, c, a);
multmod(a, d, f);
multmod(d, b, _9);
multmod(b, e, e);
cswap(a, b, r);
cswap(c, d, r);
}
invert(c, c);
multmod(a, a, c);
pack(z, a);
return z;
}
exports.generatePublicKey = generatePublicKey;
function generatePresharedKey() {
var privateKey = new Uint8Array(32);
crypto.randomFillSync(privateKey);
return privateKey;
}
exports.generatePresharedKey = generatePresharedKey;
function generatePrivateKey() {
var privateKey = generatePresharedKey();
clamp(privateKey);
return privateKey;
}
exports.generatePrivateKey = generatePrivateKey;