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What is tls.zig?

deevus/tls.zig — explained in plain English

Analysis updated 2026-07-18 · repo last pushed 2025-03-05

ZigAudience · developerComplexity · 3/5StaleSetup · moderate

In one sentence

A TLS encryption library for Zig that upgrades network connections to secure HTTPS-style communication, faster and more reliable than Zig's built-in support.

Mindmap

mindmap
  root((repo))
    What it does
      Encrypts TCP connections
      Handles TLS handshaking
      Supports client and server
      Verifies server identity
    Tech stack
      Zig
      TLS 1.2 and 1.3
    Use cases
      Build an HTTPS client
      Build a secure API server
      Debug traffic with Wireshark
    Audience
      Zig developers
      Systems programmers
    Results
      6270 of 6280 sites connected
      Outperforms Zig stdlib TLS
      Tested against badssl sites

Code map

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filefunction / class

What do people build with it?

USE CASE 1

Add HTTPS support to a Zig client that needs to connect securely to real-world websites.

USE CASE 2

Build a minimal TLS 1.3 server in Zig for an API or networking tool.

USE CASE 3

Authenticate a client connection with a signed certificate when a server requires proof of identity.

USE CASE 4

Log session keys to Wireshark to debug and inspect decrypted TLS traffic during development.

What is it built with?

ZigTLS

How does it compare?

deevus/tls.zigalichraghi/mach-duskalichraghi/mach-glfw-vulkan-example
LanguageZigZigZig
Last pushed2025-03-052024-02-242023-08-11
MaintenanceStaleDormantDormant
Setup difficultymoderatehardmoderate
Complexity3/54/53/5
Audiencedeveloperdeveloperdeveloper

Figures from each repo's GitHub metadata at analysis time.

How do you get it running?

Difficulty · moderate Time to first run · 30min

Server-side implementation only supports TLS 1.3, not 1.2.

Copy-paste prompts

Prompt 1
Show me how to upgrade an existing Zig TCP connection to TLS using this library.
Prompt 2
Explain how this library handles client certificate authentication for a Zig networking tool.
Prompt 3
Help me build a minimal TLS 1.3 server in Zig using this library.
Prompt 4
How do I configure this library to log session keys for debugging in Wireshark?

Frequently asked questions

What is tls.zig?

A TLS encryption library for Zig that upgrades network connections to secure HTTPS-style communication, faster and more reliable than Zig's built-in support.

What language is tls.zig written in?

Mainly Zig. The stack also includes Zig, TLS.

Is tls.zig actively maintained?

Stale — no commits in 1-2 years (last push 2025-03-05).

How hard is tls.zig to set up?

Setup difficulty is rated moderate, with roughly 30min to a first successful run.

Who is tls.zig for?

Mainly developer.

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