Token-Aliased Closed-Loop Security: API Key Aliasing and Third-Party Payload Protection

We present a unified architecture for securing machine-to-machine communication through
customer-facing API key aliasing and cryptographic data payload protection. The system
replaces long-lived API keys with short-lived, scope-bound, and revocable aliases,
fundamentally limiting the blast radius of credential compromise. The framework supports
zero-downtime key rotation through a dual-alias grace period mechanism and enforces
device-level binding for mobile applications. The architecture further introduces multi-identity
payload attestation and selective field-level encryption, protecting data in transit above the
transport layer. This paper presents the theoretical framework and architectural design. Full
technical specifications are outside the scope of this paper. These innovations are subject to
pending patent applications.