https://github.com/42loco42/go-zeolite

zeolite rewrite in golang
https://github.com/42loco42/go-zeolite

encryption golang-library perfect-forward-secrecy

Last synced: 1 day ago
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zeolite rewrite in golang

• Host: GitHub
• URL: https://github.com/42loco42/go-zeolite
• Owner: 42LoCo42
• License: agpl-3.0
• Created: 2022-08-17T16:42:59.000Z (about 2 years ago)
• Default Branch: main
• Last Pushed: 2022-10-12T10:30:25.000Z (about 2 years ago)
• Last Synced: 2023-08-10T21:26:12.484Z (over 1 year ago)
• Topics: encryption, golang-library, perfect-forward-secrecy
• Language: Go
• Homepage:
• Size: 45.9 KB
• Stars: 0
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# go-zeolite

Zeolite: simple & secure communications

based on [libsodium](https://doc.libsodium.org) with

[perfect forward secrecy](https://en.wikipedia.org/wiki/Forward_secrecy),

[XChaCha20-Poly1305](https://en.wikipedia.org/wiki/ChaCha20-Poly1305)

and a mirrored protocol (no distinction between client & server).

## Protocol design

The protocol is completely identical for server & client.

### Handshake (performed in lockstep by both participants)

1. Protocol version (currently `zeolite1`, so 8 bytes)

2. Public key (32 bytes)

4. Ephemeral key (for PFS) signed with public key (96 bytes)

5. Symmetric key (for communication) encrypted with ephemeral key (72 bytes)

6. Stream header (24 bytes)

Total: 232 bytes

### Data Transmission

1. Message size (4 bytes)

2. Encrypted message (17 bytes + message size)

Total: 21 bytes + message size