Paper 2025/1713 Original: eprint.iacr.org/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.
Metadata
- Available format(s)
PDF- Category
- Cryptographic protocols
- Publication info
- Preprint.
- History
- 2025-10-03: last updated
- 2025-09-20: published
- Short URL
- https://ia.cr/2025/1713
- License
- https://creativecommons.org/licenses/by/4.0/
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}
}