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
46
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
WebフロントエンドにおけるGraphQL(あるいはバックエンドのAPI)との向き合い方 / #241106_plk_frontend
izumin5210
4
1.4k
とにかくAWS GameDay!AWSは世界の共通言語! / Anyway, AWS GameDay! AWS is the world's lingua franca!
seike460
PRO
1
900
.NET のための通信フレームワーク MagicOnion 入門 / Introduction to MagicOnion
mayuki
1
1.7k
Hotwire or React? ~アフタートーク・本編に含めなかった話~ / Hotwire or React? after talk
harunatsujita
1
120
リアーキテクチャxDDD 1年間の取り組みと進化
hsawaji
1
220
Snowflake x dbtで作るセキュアでアジャイルなデータ基盤
tsoshiro
2
520
Kaigi on Rails 2024 〜運営の裏側〜
krpk1900
1
240
色々なIaCツールを実際に触って比較してみる
iriikeita
0
330
2024/11/8 関西Kaggler会 2024 #3 / Kaggle Kernel で Gemma 2 × vLLM を動かす。
kohecchi
5
940
Jakarta EE meets AI
ivargrimstad
0
240
『ドメイン駆動設計をはじめよう』のモデリングアプローチ
masuda220
PRO
8
540
3rd party scriptでもReactを使いたい! Preact + Reactのハイブリッド開発
righttouch
PRO
1
610
Featured
See All Featured
Become a Pro
speakerdeck
PRO
25
5k
How To Stay Up To Date on Web Technology
chriscoyier
788
250k
Design and Strategy: How to Deal with People Who Don’t "Get" Design
morganepeng
126
18k
Sharpening the Axe: The Primacy of Toolmaking
bcantrill
38
1.8k
[RailsConf 2023 Opening Keynote] The Magic of Rails
eileencodes
28
9.1k
Visualization
eitanlees
145
15k
Six Lessons from altMBA
skipperchong
27
3.5k
Agile that works and the tools we love
rasmusluckow
327
21k
How STYLIGHT went responsive
nonsquared
95
5.2k
Producing Creativity
orderedlist
PRO
341
39k
Responsive Adventures: Dirty Tricks From The Dark Corners of Front-End
smashingmag
250
21k
Building Flexible Design Systems
yeseniaperezcruz
327
38k
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/