DiwashBhandari

Guard License Server

Commercial Software Licensing — Ed25519 Signatures, Node-Locked & Floating Licenses, Encrypted Storage

A licensing server that issues and verifies commercial licenses offline using Ed25519 signatures. It supports node-locked and floating license models, with pluggable storage across MessagePack, SQLite, and PostgreSQL. AES-256-GCM encryption, rate limiting, and structured logging protect the admin API and license data.

Guard Trust — License Enforcement SDK

Client-Side License SDK — Offline Verification, Machine Binding, Background Monitoring & Nuitka Protection

A client-side SDK that enforces licenses offline by verifying Ed25519 signatures and binding licenses to machine fingerprints. It supports configurable offline grace periods, import-time validation, background monitoring, and runtime revocation detection. FastAPI middleware auto-revalidates licenses on HTTP requests, while Nuitka compilation and encrypted local caching protect source and license data.

ISP Customer Support Platform

LLM-Powered ISP Support — LangGraph Agent, Hybrid RAG, QR Payments, Ticketing & Live Dashboard

A LangGraph-based support platform where an agent uses 16 function-calling tools to handle subscriptions, invoices, plan upgrades, ticketing, QR-code payments, and technician workflows through conversation. Hybrid RAG combines dense vector and BM25 search with Reciprocal Rank Fusion, while a dual LLM fallback maintains availability. OTP verification via RFC 4226 HOTP secures sensitive actions, and QStash processes async tasks with JWT-verified webhooks across pluggable Redis, Upstash, and PostgreSQL cache backends.