Klexx

#!/bin/bash

exts=".aux .lof .log .lot .fls .out .toc .dvi .bbl .bcf .blg -blx.aux -blx.bib -blx.bib .run.xml .fdb_latexmk .synctex.gz .syntex.gz(busy) .pdfsync .algorithms .alg .loa .thm .nav .snm .vrb .acn .acr .glg .glo .gls .brf .lol .idx .ilg .ind .ist .maf .mtc .mtc0 .pyg .nlo .tdo .xdy .keys"

for x in "${@:-.}"; do
    arg=$(echo ${x:-.} | perl -pe 's/\.(tex|pdf)$//')

    if [[ -d "$arg" ]]; then
        for ext in $exts; do
             rm -f "$arg"/*$ext

Klexx

# Based on http://cr.yp.to/streamciphers/timings/estreambench/submissions/salsa20/chacha8/ref/chacha.c

import binascii
import numpy as np

np.seterr(over='ignore')

def rotl32(v, c):
    assert isinstance(v, np.uint32)
    assert isinstance(c, np.uint32)

Klexx

# Pure Python ChaCha20
# Based on Numpy implementation: https://gist.github.com/chiiph/6855750
# Based on http://cr.yp.to/chacha.html
#
# I wanted an implementation of ChaCha in clean, understandable Python
# as a way to get a handle on the algorithm for porting to another language.
# There are plenty of bindings but few pure implementations, because
# Pure Python is too slow for normal practical use in Cryptography.
#
# The preceding implementation used NumPy, which avoided a lot of the

Klexx

// Copyright 2015-2016 Espressif Systems (Shanghai) PTE LTD
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at

//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,