Rishiraj Behki
CS @ Purdue · Embedded & Security Research
Computer Science at Purdue. I build real-time embedded systems and ship security tooling.
About
I'm a CS student at Purdue (grad May 2027) and an undergraduate researcher working low in the stack: real-time DSP on FPGA/SoC, firmware, and signal processing. Right now I'm building a sub-24ms audio steganography pipeline on a Zynq-7000, and porting it to NVIDIA Jetson hardware.
Lately I've also been building software for AR glasses. On the security side I co-founded HackArmour, a search engine and CTF community, and I'm always up for more projects where embedded systems meet security.
Experience
Undergraduate Research Assistant · CYNICS Research Group, Purdue
- Engineered a real-time Zynq-7000 audio steganography pipeline in C using AXI DMA, I2S, SPI, Speex compression, DCT-domain embedding, and ECDH-seeded PRNG synchronization, reducing end-to-end streaming latency from 5 seconds to under 24 milliseconds.
- Built ESP32-S3 and Python transmitter and receiver tooling for AI-generated carrier audio, UDP transport, packet-loss recovery, raw capture, and Speex/Ogg decoding.
- Created a bit-exact MATLAB verification suite that identified Q16 fixed-point quantization, random-number-generator synchronization, and ADC saturation bugs in the firmware.
- Built secure AR-glasses prototypes using Unity/OpenXR, Raspberry Pi, Supabase, P-256 ECDH, ChaCha20, AprilTag detection, and local JPEG steganography recovery.
Undergraduate Researcher · Frederick National Laboratory (Purdue Datamine)
- Building an LLM-powered system to harmonize biomedical vocabularies, automating ontology alignment via Neo4j semantic search.
- Designed a Streamlit interface for researchers to batch-map terms, review alignments, and feed back corrections.
- Engineered backend pipelines to ingest and update evolving ontologies (NCIt, caDSR, UBERON) for cancer-research data integration.
Educator & Course Coordinator · LIFE Robotics
- Designed and delivered a web-development curriculum (JS frameworks) to 20+ students, including secure-coding and web-vuln modules.
- Mentored 3 teams (9 students) for the World Robotics Olympiad 2023; one team placed 3rd nationally.
Skills
Languages
Security
Embedded / Systems
Data / Cloud
Featured projects
HackArmour
Co-founded a cybersecurity search engine and CTF community. Built a Rust caching layer that cut query latency from 500 ms to 96 ms across 100k+ CVE records, developed Go cache-search protocols for high concurrency, and led four global CTFs with 4,000+ participants and $5,000 in prizes.
POSIX-style UNIX Shell
Implemented a POSIX-style shell in C/C++ with Lex/Yacc parsing, process creation, pipelines, I/O redirection, background execution, and built-ins. Added SIGINT/SIGTSTP job control, subshells, wildcard expansion, pattern matching, and a custom command-history line editor.