What cryptographic primitives does this skill cover?

This skill covers Ed25519 for digital signatures, X25519 for key exchanges, HKDF (SHA-256) for key derivation, and AES-256-CBC for symmetric encryption.

How does Reticulum handle forward secrecy?

Reticulum implements forward secrecy using Ratchets—X25519 private keys that rotate every 30 minutes (RATCHET_INTERVAL) to ensure past communications remain secure.

What is the structure of a Reticulum Identity?

A Reticulum Identity is a 512-bit keypair composed of a 256-bit X25519 encryption key and a 256-bit Ed25519 signing key, identified by a truncated 128-bit SHA-256 hash.

Does Reticulum use standard Fernet tokens?

It uses a modified Fernet format that removes version and timestamp metadata for increased efficiency and privacy, resulting in a 48-byte token overhead.

What is the purpose of HKDF in Reticulum?

HKDF is used to derive independent 32-byte signing and encryption keys from a shared ECDH secret, binding the keys to a specific context using the identity hash as a salt.

Reticulum Cryptography & Identity

Name: Reticulum Cryptography & Identity
Author: torlando-tech

bytorlando-tech

0•

Security & Testing

Implements and explains Reticulum's authoritative cryptographic primitives, identity structures, and forward-secrecy mechanisms.

This skill provides Claude with authoritative knowledge of the Reticulum Network Stack's cryptographic implementation, covering Ed25519 signatures, X25519 key exchanges, and AES-256-CBC encryption. It offers precise implementation patterns for identity generation, Fernet-based token structures, and HKDF key derivation, ensuring that any Reticulum-compatible development adheres to the protocol's strict security standards. Additionally, it provides guidance on implementing advanced forward secrecy through the RNS Ratchet system, making it essential for developers building secure, decentralized communication tools.

Key Features

01Detailed implementation patterns for 512-bit Reticulum Identity structures

02Step-by-step encryption and decryption workflows using HKDF and AES-256-CBC

03Authoritative guidance on Ed25519 signatures and X25519 key exchanges

04Specification for efficient, modified Fernet-based token formats

05Advanced forward secrecy implementation via RNS Ratchet lifecycle management

060 GitHub stars

Use Cases

01Building secure, peer-to-peer messaging applications on the Reticulum protocol

02Auditing Reticulum-compatible software for cryptographic compliance and security

03Implementing decentralized identity and key management systems for mesh networks

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add torlando-tech/reticulum-skills cryptography-identity

For use in Claude.ai and ChatGPT

Download Skill