syncsynchalt/illustrated-tls12

The Illustrated TLS 1.2 Connection: Every byte explained

3,514

133 commits

updated Jul 25, 2025

tls12.ulfheim.net

See the code

README

The Illustrated TLS Connection

Published at https://tls.xargs.org

site/: page source for the finished product
server/main.go: server code
client/main.go: client code
tlscopy/: copy of golang's crypto/tls/ lib, for ease of extracting secret values
captures/: PCAP and keylog files

aes-cbc

ecdhe

elliptic-curves

rsa

ssl

tls

tls12

Significant stargazers

(top 24 of 43)

Filippo Tessarotto

177 followers · starred Oct 2018

Cookie Engineer

608 followers · starred Aug 2021

Zeyi (Rice) Fan

688 followers · starred Oct 2018

Ivan Babrou

297 followers · starred Nov 2018

Similar repos

ianic/tls.zig

TLS 1.3/1.2 client and TLS 1.3 server in Zig

174

denji/golang-tls

Simple Golang HTTPS/TLS Examples

1,330

pion/dtls

DTLS 1.2 / 1.3 implementation for Go

704

gh2o/bash_tls

A minimal TLS 1.2 client implementation in a pure Bash script

352

gojue/ecapture

Capture SSL/TLS plaintext with eBPF—no MITM proxy or custom CA installation. Supports Linux and…

15,498

pFarb/awesome-crypto-papers

A curated list of cryptography papers, articles, tutorials and howtos.

2,099

google/s2a-go

ssllabs/research

2,211