Paper 2025/1713
Ilyazh-Web3E2E: A Post-Quantum Hybrid Protocol for Forward-Secure Decentralized Messaging
Abstract
We propose Ilyazh-Web3E2E, a post-quantum hybrid messaging protocol combining classical and PQ-secure KEMs with forward secrecy and robust rekeying. The design augments the Double Ratchet model with hybrid key encapsulation (X25519 + ML-KEM), digital authentication (Ed25519 + ML-DSA), and re-encapsulation-based ratcheting for long-lived Web3 identity protection. The protocol emphasizes forward secrecy, post-compromise security, and decentralized identities. We sketch IND-CCA and AKE security arguments, present a concrete wire format, and provide comparisons with PQXDH and PQ3.
Note: This is the initial version of the work. The scheme aims to offer a hybrid post-quantum secure channel with forward secrecy and decentralized identity integration. The construction was developed independently and will be improved based on community feedback.
Metadata
- Available format(s)
-
PDF
- Category
- Cryptographic protocols
- Publication info
- Preprint.
- Contact author(s)
- ilyaszhaisenbaev @ gmail com
- History
- 2025-10-03: revised
- 2025-09-20: received
- See all versions
- Short URL
- https://ia.cr/2025/1713
- License
-
CC BY
BibTeX
@misc{cryptoeprint:2025/1713,
author = {Ilyas Zhaisenbayev},
title = {Ilyazh-{Web3E2E}: A Post-Quantum Hybrid Protocol for Forward-Secure Decentralized Messaging},
howpublished = {Cryptology {ePrint} Archive, Paper 2025/1713},
year = {2025},
url = {https://eprint.iacr.org/2025/1713}
}
