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Fix Wi-Fi adapter for Kali linux on MacBook Air

http://http.kali.org/kali/pool/non-free/b/broadcom-sta/

$ wget http://http.kali.org/kali/pool/non-free/b/broadcom-sta/broadcom-sta-dkms_[**********]_all.deb

$ dpkg -i broadcom-sta-dkms_[**********]_all.deb

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Each of these commands will run an ad hoc http static server in your current (or specified) directory, available at http://localhost:8000. Use this power wisely.

Discussion on reddit.

Python 2.x

$ python -m SimpleHTTPServer 8000

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import json

from kafka import KafkaConsumer
from kafka.structs import OffsetAndMetadata, TopicPartition


consumer = KafkaConsumer(bootstrap_servers=['0.0.0.0:9092'],
                         key_deserializer=lambda m: m.decode('utf8'),
                         value_deserializer=lambda m: json.loads(m.decode('utf8')),
                         auto_offset_reset="earliest",

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# Raw transaction API example work-through
# Send coins to a 2-of-3 multisig, then spend them.
#
# For this example, I'm using these three keypairs (public/private)
# 0491bba2510912a5bd37da1fb5b1673010e43d2c6d812c514e91bfa9f2eb129e1c183329db55bd868e209aac2fbc02cb33d98fe74bf23f0c235d6126b1d8334f86 / 5JaTXbAUmfPYZFRwrYaALK48fN6sFJp4rHqq2QSXs8ucfpE4yQU
# 04865c40293a680cb9c020e7b1e106d8c1916d3cef99aa431a56d253e69256dac09ef122b1a986818a7cb624532f062c1d1f8722084861c5c3291ccffef4ec6874 / 5Jb7fCeh1Wtm4yBBg3q3XbT6B525i17kVhy3vMC9AqfR6FH2qGk
# 048d2455d2403e08708fc1f556002f1b6cd83f992d085097f9974ab08a28838f07896fbab08f39495e15fa6fad6edbfb1e754e35fa1c7844c41f322a1863d46213 / 5JFjmGo5Fww9p8gvx48qBYDJNAzR9pmH5S389axMtDyPT8ddqmw

# First: combine the three keys into a multisig address:
./bitcoind createmultisig 2 '["0491bba2510912a5bd37da1fb5b1673010e43d2c6d812c514e91bfa9f2eb129e1c183329db55bd868e209aac2fbc02cb33d98fe74bf23f0c235d6126b1d8334f86","04865c40293a680cb9c020e7b1e106d8c1916d3cef99aa431a56d253e69256dac09ef122b1a9

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Introduction

This is a guide to using pyjwt to sign and validate a JWT using RS256.

The trickiest part of doing this is knowing what the proper OpenSSL commands are to generate the RSA keypair. I demonstrate that below.

Generating RSA keys

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ssh-keygen -t rsa -b 4096 -m PEM -f jwtRS256.key
# Don't add passphrase
openssl rsa -in jwtRS256.key -pubout -outform PEM -out jwtRS256.key.pub
cat jwtRS256.key
cat jwtRS256.key.pub

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import pytest

@pytest.fixture(scope="function", autouse=True)
def isolate(fn_isolation):
    pass

@pytest.fixture(scope="module")
def token(Token, accounts):
    t = accounts[0].deploy(Token, "Test Token", "TST", 18, "1000 ether")
    yield t

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find app/src -name "*.js" -exec sh -c 'mv "$0" "${0%.js}.ts"' {} \;

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** Add repository and install bitcoind ** 

sudo apt-get install build-essential
sudo apt-get install libtool autotools-dev autoconf
sudo apt-get install libssl-dev
sudo apt-get install libboost-all-dev
sudo add-apt-repository ppa:bitcoin/bitcoin
sudo apt-get update
sudo apt-get install bitcoind
mkdir ~/.bitcoin/ && cd ~/.bitcoin/

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# 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