dchest

/*

 IMPORTANT!!! DO NOT USE THIS. It works, but you'll probably get it wrong,
 because it must be keyed with at least 128 bits of entropy, and where
 do you get this entropy, huh?
  
  - In a browser, you get it from window.crypto.getRandomValues().
  - In Node, you get it from crypto.randomBytes()
  
 Now LOOK AT YOU! You already have secure ways to generate random bytes,

dchest

<?php

/**
 *  Generate a random UUIDv4.
 *  @return string UUID
 */
function generate_uuid()
{
    $b = random_bytes(16);
    $b[6] = chr(ord($b[6]) & 0x0f | 0x40);

dchest

// Note: this is for scrypt implementation, which doesn't use diagonal constants, 
// so the order of loading from x is different than in normal Salsa20 implementation.

function salsa20_8(x) {
    var j0  = (x[ 0] & 0xff) | ((x[ 1] & 0xff)<<8) | ((x[ 2] & 0xff)<<16) | ((x[ 3] & 0xff)<<24);
    var j1  = (x[ 4] & 0xff) | ((x[ 5] & 0xff)<<8) | ((x[ 6] & 0xff)<<16) | ((x[ 7] & 0xff)<<24);
    var j2  = (x[ 8] & 0xff) | ((x[ 9] & 0xff)<<8) | ((x[10] & 0xff)<<16) | ((x[11] & 0xff)<<24);
    var j3  = (x[12] & 0xff) | ((x[13] & 0xff)<<8) | ((x[14] & 0xff)<<16) | ((x[15] & 0xff)<<24);
    var j4  = (x[16] & 0xff) | ((x[17] & 0xff)<<8) | ((x[18] & 0xff)<<16) | ((x[19] & 0xff)<<24);
    var j5  = (x[20] & 0xff) | ((x[21] & 0xff)<<8) | ((x[22] & 0xff)<<16) | ((x[23] & 0xff)<<24);

dchest

# Cryptopass by dchest

# Based on:

# pbkdf2.py -- library to calculate keys from passwords
# Copyright (C) 2010 Tobias Ammann

# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License as
# published by the Free Software Foundation; either version 3 of

dchest

// randomString(length)
// --------------------
// 
// Generates and returns a cryptographically secure
// uniform alphanumeric random string.
//
// Examples:
//
//  randomString(14) // "oXYWpc1vODNR3M"
//  randomString.hex(8) // "663c722b65943b9b"

dchest

// String ranges: strange('A-Za-z0-9+/') -> "ABCDEFGHIJKLMNOPQRSTUVWXYabcdefghijklmnopqrstuvwxy012345678+/"
const strange = s => s.replace(/(.)-(.)/g, (_, x, y) => { for (var i = x.charCodeAt(0) + 1; i < y.charCodeAt(0); i++) x += String.fromCharCode(i); return x })

// Base64 encoding of Uint8Array of ArrayBuffer and decoding to Uint8Array
const encodeBase64 = a => btoa(Array.from(a instanceof ArrayBuffer ? new Uint8Array(a) : a).map(x => String.fromCharCode(x)).join(''));
const encodeBase64url = a => encodeBase64(a).replace(/\+/g, '-').replace(/\//g, '_').replace(/=/g, ''); // no padding
const decodeBase64 = s => Uint8Array.from(atob(s), x => x.charCodeAt(0));
// TODO: decodeBase64url

dchest

/** Gimli permutation - https://gimli.cr.yp.to */
function gimli(s) {
    var r, x, y, z,
        a = s[ 0] | s[ 1] << 8 | s[ 2] << 16 | s[ 3] << 24,
        b = s[ 4] | s[ 5] << 8 | s[ 6] << 16 | s[ 7] << 24,
        c = s[ 8] | s[ 9] << 8 | s[10] << 16 | s[11] << 24,
        d = s[12] | s[13] << 8 | s[14] << 16 | s[15] << 24,
        e = s[16] | s[17] << 8 | s[18] << 16 | s[19] << 24,
        f = s[20] | s[21] << 8 | s[22] << 16 | s[23] << 24,
        g = s[24] | s[25] << 8 | s[26] << 16 | s[27] << 24,

dchest

/*
  dchest's PureCSS Tweaks 
  https://gist.github.com/dchest/500746c2e41baaafcab3
*/

* {
  -webkit-box-sizing: border-box;
  -moz-box-sizing: border-box;
  box-sizing: border-box;
}

dchest

#!/bin/sh

fossil extra | tr '\n' '\0' | xargs -0 -t fossil add

dchest

/* Written by Dmitry Chestnykh. Public domain. */
#include <err.h>
#include <stdint.h>
#include <stdio.h>
#include <string.h>
#include <time.h>
#include <openssl/blowfish.h>
#include <openssl/lhash.h>

/* Encryption and decryption */