Knightsbridge
@jackkxco
The trust stack for the human–AI economy — open-source post-quantum cryptography for finance, blockchain & AI agents
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Production-tested post-quantum cryptography patterns: deterministic key derivation, hybrid webhook signing, and kid fingerprinting. Built on @noble/post-quantum. Used in production at KXCO.
...moreDrop-in webhook signing + verification for Express, Fastify, Hono, Cloudflare Workers, and Vercel Functions. Hybrid HMAC-SHA-256 + ML-DSA-65 (NIST FIPS 204) signatures over the canonical kxco-post-quantum webhook envelope. Use this on the sender side to o
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The complete KXCO post-quantum stack in one package — identity, HSM, audit logging, attestation, encrypted channels, file encryption, webhook signing, chain relay, and agent identity.
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Post-quantum document signing and on-chain attestation. Signs arbitrary payloads with ML-DSA-65 (NIST FIPS 204), producing a self-contained JSON envelope any counterparty can verify. Optionally anchors the envelope hash on Armature L1 for a permanent time
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Tamper-evident post-quantum audit log: ML-DSA-65-signed, hash-chained operation entries. Prove cryptographic operations happened, in order, and were not altered. Memory and append-only file backends.
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CLI for kxco-post-quantum: keygen, fingerprint, key rotation, signed rotation manifests. Generates ML-DSA-65 keypairs deterministically from a master secret + label; emits well-known JSON + RFC 8785 JCS-canonical signed manifests during rotation.
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HSM-backed post-quantum key management: ML-DSA-65 signing and ML-KEM-768 decapsulation through a hardware security module boundary. Three backends: in-memory (dev), Argon2id-encrypted file, and PKCS#11 (SoftHSM2, Luna, Utimaco, YubiKey).
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Post-quantum encrypted channels for Node.js streams and WebSockets — ML-KEM-768 key exchange (NIST FIPS 203) with ML-DSA-65 mutual authentication (NIST FIPS 204).
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Post-quantum file encryption CLI and library — ML-KEM-768 + AES-256-GCM
kxco
Standalone, browser-safe verifier for KXCO ML-DSA-65 post-quantum signed attestations and credentials — for auditors, regulators, counterparties, and anyone who needs to confirm a signature without running the full KXCO SDK.
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