Software Architecture

Split key showing physical license key and digital circuit encryption key with Ed25519 signature seal above and dual-envelope architecture showing blue customer and amber master envelopes connected to locked document

Encryption and Licensing: How We Built It for a Shipped Product

The complete story of designing a licensing and backup encryption system for a product shipped to customer sites. Ed25519 digital signatures, dual-envelope AES-256-GCM encryption, SHA-256 key derivation, and the master key trust trade-off.

Multi-agent AI development system architecture diagram showing orchestrator managing specialized agents with MCP server providing centralized engineering standards

The 2,000-Line Prompt Problem: Building an AI Development Operating System

How a monolithic prompt file evolved into a production AI Development Operating System. Real architecture for multi-agent software development: MCP standards, orchestration patterns, and the phases that actually matter.