Is this skill aligned with the Signal Protocol?

Yes, it implements the core components of the Signal Protocol, including the Extended Triple Diffie-Hellman (X3DH) and the Double Ratchet algorithm.

What cryptographic algorithms does this skill use?

The skill implements X25519 for Diffie-Hellman key exchange, HKDF for key derivation, and AES-256-GCM for authenticated message encryption.

Does this implementation support forward secrecy?

Yes, it implements the Double Ratchet algorithm which ensures that if a current key is compromised, past messages remain encrypted and secure.

How does it handle messages arriving out of order?

The skill includes logic for managing receiving chains and skipping keys to ensure that out-of-order or delayed messages can still be decrypted correctly.

E2EE Messaging Implementation

Name: E2EE Messaging Implementation
Author: micsapp

bymicsapp

0•

安全与测试

Implements secure end-to-end encryption for messaging using the Signal Protocol, Double Ratchet algorithm, and AES-256-GCM.

This skill provides a comprehensive framework for implementing industry-standard end-to-end encryption (E2EE) within messaging applications. It guides developers through the complex process of setting up X3DH for initial key agreement and the Double Ratchet algorithm for ongoing key management, ensuring perfect forward secrecy and message integrity. By utilizing X25519, HKDF, and AES-256-GCM, the skill enables the creation of highly secure communication channels where only the intended participants can decrypt the message content.

主要功能

01Implements Double Ratchet algorithm for secure key management

02Handles complex scenarios like out-of-order message delivery

03Ensures forward secrecy and post-compromise security

04Utilizes AES-256-GCM for authenticated message encryption

05Establishes initial trust using X3DH (Extended Triple Diffie-Hellman)

060 GitHub stars

使用场景

01Integrating E2EE into existing communication platforms

02Conducting security assessments of cryptographic implementations

03Developing secure chat or messaging applications

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add micsapp/micstec-skills implementing-end-to-end-encryption-for-messaging

For use in Claude.ai and ChatGPT

主要功能

01Implements Double Ratchet algorithm for secure key management

02Handles complex scenarios like out-of-order message delivery

03Ensures forward secrecy and post-compromise security

04Utilizes AES-256-GCM for authenticated message encryption

05Establishes initial trust using X3DH (Extended Triple Diffie-Hellman)

060 GitHub stars

使用场景

01Integrating E2EE into existing communication platforms

02Conducting security assessments of cryptographic implementations

03Developing secure chat or messaging applications

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add micsapp/micstec-skills implementing-end-to-end-encryption-for-messaging

For use in Claude.ai and ChatGPT