Cybersecurity undergraduate exploring cryptography, Linux, networking,
and reliable AI systems.
I build with AI, not around it.
AI has become part of my engineering workflow — from exploring unfamiliar ideas and debugging to prototyping and iteration. I still care about understanding the system underneath, making the design decisions, and knowing when not to trust the model.
systems / cryptography · C OpenSSL Argon2id FUSE
A block-level encrypted file container built in C, combining authenticated encryption, tamper detection, and FUSE filesystem access. Each block's AAD binds its file and position, so reordering or cross-container transplant fails authentication instead of decrypting silently.
ai / security · TypeScript Next.js PostgreSQL pgvector
An AI-assisted recruitment-scam detector combining deterministic red flags, vector retrieval, and quote-verified LLM reasoning. The LLM advises; the final verdict is composed deterministically, and every evidence quote is checked against the source text.
🔗 Repository · Live Demo
infrastructure / security data · Python Kafka PostgreSQL OCSF Docker
A security-log processing pipeline that preserves raw events, normalizes heterogeneous sources
into OCSF, and safely onboards previously unknown formats — an SLM proposes candidate parsing
rules, validation and human review decide whether they go active. SIH 2026 · PS 26156
application security · Node.js TypeScript HMAC-SHA256 Razorpay
A deterministic security verifier for payment webhooks — signature validation, server-side
amount binding against trusted order state, replay protection, and a tamper-evident
hash-chained audit log. The LLM explains decisions; it never makes them.
Razorpay AI Buildathon 2026
| Qwen-ATLAS | Threat-intelligence retrieval and local LLM reasoning | revising |
| ModelFS | AI-assisted filesystem and pre-OS interaction | early idea |
| Sensitive Data Risk Classification | Local classification of sensitive content, policy-aware detection | ongoing |
| Languages | C, Python, TypeScript |
| Systems & Crypto | Linux, FUSE, OpenSSL, AES-256-GCM, Argon2id, HKDF, HMAC |
| Data & Infra | PostgreSQL, pgvector, Kafka, OCSF, Docker |
| AI | Retrieval (RAG), local LLMs (Ollama · Qwen3), constrained LLM pipelines |
| Web | React, Next.js, Node.js, Express |
Have something interesting to build?
karthiksethuraman6@gmail.com · LinkedIn