A Single-Root, Multi-Curve, Context-Isolated, PQC-Pluggable Cryptographic Identity Primitive with Stateless Secret Rotation

• URL: http://arxiv.org/abs/2511.20505v1
• Date: Tue, 25 Nov 2025 17:15:18 GMT
• Title: A Single-Root, Multi-Curve, Context-Isolated, PQC-Pluggable Cryptographic Identity Primitive with Stateless Secret Rotation
• Abstract summary: This paper introduces MSCIKDF, a single-root, multi-curve, context-isolated, PQC-pluggable cryptographic identity primitive.<n>It defines a new architectural foundation where identity is derived deterministically but with cryptographically enforced separation across diverse contexts.<n>It achieves strong security invariants -- such as zero-linkability, multi-curve independence, and resistance to cross-context correlation.
• Score: 1.7429038786735553
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Cryptographic identity anchors modern decentralized systems, yet current standards like BIP-39 and BIP-32 are structurally insufficient for the demands of multi-curve, multi-domain, and post-quantum (PQC) environments. These legacy schemes rely on a monolithic identity root with no inherent context isolation, algorithm agility, or secure secret rotation. This paper introduces MSCIKDF, a single-root, multi-curve, context-isolated, PQC-pluggable cryptographic identity primitive. MSCIKDF defines a new architectural foundation where identity is derived deterministically but with cryptographically enforced separation across diverse contexts (e.g., blockchain, E2EE, KMS, IoT). It achieves strong security invariants -- such as zero-linkability, multi-curve independence, and resistance to cross-context correlation -- while offering stateless secret rotation that preserves long-term identity continuity without requiring asset migration. MSCIKDF is proposed as an infrastructure-level upgrade to deterministic identity, establishing a durable and algorithm-agnostic root of trust suitable for the next decade of distributed systems, AI agents, and PQC migration.

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