Show HN: Source-available post-quantum messenger – crypto core on GitHub

Category: library

Tags: post-quantum, cryptography, swift, messaging, signal-protocol

Score: 6.0/10 (Innovation: 5, Technical: 8, Documentation: 7, Utility: 4)

PhantomChatCrypto is the cryptographic core of a post-quantum messenger, implementing ML-KEM-768, Keccak/SHA3, a PQXDH hybrid key exchange, and the Double Ratchet algorithm in pure Swift. It's interesting because it provides a verifiable, open-source implementation of cutting-edge post-quantum cryptography for secure messaging, with interop tests against Apple's CryptoKit.

Target audience: security researchers, iOS developers, cryptographers

Repository: https://github.com/VeilusDigital/PhantomChatCrypto · Swift · NOASSERTION

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