Upgrade to Pro
— share decks privately, control downloads, hide ads and more …
Speaker Deck
Features
Speaker Deck
PRO
Sign in
Sign up for free
Search
Search
Knock! Knock! Who's There?
Search
Markus H
September 10, 2021
Programming
0
58
Knock! Knock! Who's There?
My talk from the Snakeoil Acadamy / PyCon AU 2021
Markus H
September 10, 2021
Tweet
Share
More Decks by Markus H
See All by Markus H
🐍 ❤️ 🦀 — Python loves Rust
markush
0
190
An Introduction To Kubernetes ☸
markush
0
76
Writing Safe Database Migrations (DjangoCon Europe 2021)
markush
0
14k
A Pony On The Move: How Migrations Work In Django 🐎
markush
0
13k
All Hands on Deck — Handling Security Issues
markush
0
13k
Logging Rethought 2: The Actions of Frank Taylor Jr. (PyCon UK 2019)
markush
0
48
Logging Rethought 2: The Actions of Frank Taylor Jr. (PyCon Australia 2019)
markush
1
180
Logging Rethought 2: The Actions of Frank Taylor Jr. (DjangoCon Europe 2019)
markush
0
13k
Less Obvious Things To Do With Django's ORM (PyCon SK 2019)
markush
0
13k
Other Decks in Programming
See All in Programming
AWS re:Invent 2024個人的まとめ
satoshi256kbyte
0
100
カンファレンス動画鑑賞会のススメ / Osaka.swift #1
hironytic
0
170
chibiccをCILに移植した結果 (NGK2025S版)
kekyo
PRO
0
130
週次リリースを実現するための グローバルアプリ開発
tera_ny
1
1.2k
PHPで学ぶプログラミングの教訓 / Lessons in Programming Learned through PHP
nrslib
4
1.1k
EC2からECSへ 念願のコンテナ移行と巨大レガシーPHPアプリケーションの再構築
sumiyae
3
580
PicoRubyと暮らす、シェアハウスハック
ryosk7
0
210
ErdMap: Thinking about a map for Rails applications
makicamel
1
590
CQRS+ES の力を使って効果を感じる / Feel the effects of using the power of CQRS+ES
seike460
PRO
0
240
テストコードのガイドライン 〜作成から運用まで〜
riku929hr
7
1.4k
Azure AI Foundryのご紹介
qt_luigi
1
180
ASP.NET Core の OpenAPIサポート
h455h1
0
110
Featured
See All Featured
XXLCSS - How to scale CSS and keep your sanity
sugarenia
248
1.3M
Embracing the Ebb and Flow
colly
84
4.5k
Measuring & Analyzing Core Web Vitals
bluesmoon
5
210
The MySQL Ecosystem @ GitHub 2015
samlambert
250
12k
Art, The Web, and Tiny UX
lynnandtonic
298
20k
Facilitating Awesome Meetings
lara
51
6.2k
The Myth of the Modular Monolith - Day 2 Keynote - Rails World 2024
eileencodes
19
2.3k
Intergalactic Javascript Robots from Outer Space
tanoku
270
27k
RailsConf 2023
tenderlove
29
970
Building an army of robots
kneath
302
45k
Build your cross-platform service in a week with App Engine
jlugia
229
18k
Building Better People: How to give real-time feedback that sticks.
wjessup
366
19k
Transcript
Snakeoil Academy 2021 • PyCon AU • @m_holtermann Knock! Knock!
Who’s There?
Snakeoil Academy 2021 • PyCon AU • @m_holtermann Hi, I’m
Markus Holtermann
Snakeoil Academy 2021 • PyCon AU • @m_holtermann Hi, I’m
Markus Holtermann W e're hiring
Snakeoil Academy 2021 • PyCon AU • @m_holtermann The Beginning
Snakeoil Academy 2021 • PyCon AU • @m_holtermann Marian Vanhaeren/Francesco
d'Errico
Snakeoil Academy 2021 • PyCon AU • @m_holtermann Sketch by
Sydney Parkinson (1784) Portrait by Louis John Steele (1891)
Snakeoil Academy 2021 • PyCon AU • @m_holtermann
Snakeoil Academy 2021 • PyCon AU • @m_holtermann
Snakeoil Academy 2021 • PyCon AU • @m_holtermann Snakeoil Academy
2021 • PyCon AU • @m_holtermann # scrypt >>> import base64, hashlib, secrets >>> salt = secrets.token_bytes(16) >>> password = b"my p4ssw0rd!"0 >>> hash = hashlib.scrypt(password, salt=salt, n=2**14, r=8, p=1, maxmem=0, dklen=64).hex() >>> base64.b64encode(hash).decode('ascii').strip() '8ln2EySYjOZRSLaIzjvaOaQQfGshxdH7vxptMyWo9zWJbM1glu0K8LbZf56QH+GefdiCP079IErDhVw UmPsRzQ==' # argon2 >>> from argon2 import PasswordHasher >>> hasher = PasswordHasher() >>> hasher.hash(password) '$argon2id$v=19$m=102400,t=2,p=8$d85wm2Zga0oSPiK6Uxm4zA$03Kc+n7lf3SpL+VYSbMnfA'
Snakeoil Academy 2021 • PyCon AU • @m_holtermann Basic &
Digest Authentication RFC 2069, RFC 2617, RFC 7617
Snakeoil Academy 2021 • PyCon AU • @m_holtermann Snakeoil Academy
2021 • PyCon AU • @m_holtermann WWW-Authenticate: Basic realm="PyConAU 2021", charset="UTF-8" Authorization: Basic Y3VybHlib2k6c25ha2VvaWwuYWNhZGVteQ== Server replies with: Client sends:
Snakeoil Academy 2021 • PyCon AU • @m_holtermann Token Authentication
Authorization: Token soM3r4nDOmByt3s
Snakeoil Academy 2021 • PyCon AU • @m_holtermann Bearer Authentication
RFC 6750 Authorization: Bearer eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiIy MDIxIiwibmFtZSI6ImN1cmx5Ym9pIn0.W8-ixoAkGMe5Gs7c5 DLXFO0fCLypn2xhNExulY5iSEY
Snakeoil Academy 2021 • PyCon AU • @m_holtermann JWT https://groups.google.com/g/django-developers
/c/6oS9R2GwO4k/m/Rep92xfsAwAJ
Snakeoil Academy 2021 • PyCon AU • @m_holtermann JWT
Snakeoil Academy 2021 • PyCon AU • @m_holtermann Snakeoil Academy
2021 • PyCon AU • @m_holtermann >>> import base64, json, hmac >>> key = b"snakeoil.academy" >>> data = {"uid": 123, "name": "curlyboi"} >>> payload = base64.b64encode(json.dumps(data).encode()) >>> mac = hmac.new(key, payload, digestmod="sha256") >>> payload + b"." + base64.b64encode(mac.digest()) >>> ret b'eyJ1aWQiOiAxMjMsICJuYW1lIjogImN1cmx5Ym9pIn0=.oJPUWmHZGJIXPCna082U8/SMseX+hZ5av Kjgt1TKovg=' >>> signed, signature = ret.split(b".", 1) >>> hmac.compare_digest(signature, ... base64.b64encode(hmac.new(key, signed, digestmod="sha256").digest())) True >>> json.loads(base64.b64decode(signed)) {'uid': 123, 'name': 'curlyboi'}
Snakeoil Academy 2021 • PyCon AU • @m_holtermann Mutual Authentication
Snakeoil Academy 2021 • PyCon AU • @m_holtermann FIDO2 /
WebAuthn https://www.w3.org/TR/webauthn-2/
Snakeoil Academy 2021 • PyCon AU • @m_holtermann Snakeoil Academy
2021 • PyCon AU • @m_holtermann
Snakeoil Academy 2021 • PyCon AU • @m_holtermann I! I
who? Identification and Authentication!
Snakeoil Academy 2021 • PyCon AU • @m_holtermann Thank you!
Snakeoil Academy 2021 • PyCon AU • @m_holtermann Sources •
https://www.newscientist.com/article/dn9392-ancient-beads-imply-culture-older-than-we-thought/ • https://rss.onlinelibrary.wiley.com/doi/pdf/10.1111/j.1740-9713.2013.00706.x • https://www.smithsonianmag.com/history/tattoos-144038580/ • https://www.trulioo.com/blog/infographic-the-history-of-id-verification • https://github.blog/2021-04-05-behind-githubs-new-authentication-token-formats/