Ridham Khurana

Systems Programmer · Compiler Engineer

Building production-level compilers and exploring post-quantum cryptography. Focused on systems programming, low-level optimization, and performance-critical software development.

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About

Who I Am

Building production-level compilers and exploring post-quantum cryptography. Focused on systems programming, low-level optimization, and performance-critical software development.

Education

Integrated M.Tech (CSE), 2027

University of Hyderabad

7th Semester

Expected: 2027

Experience

Summer Research Intern

Indian Statistical Institute (ISI), Kolkata

May 2025 – July 2025 • Kolkata, India

Kyber & Dilithium Modifications (Post-Quantum Cryptography)

  • • Implemented and analyzed cryptographic tweaks to the Dilithium digital signature scheme, including hash function substitution, challenge coefficient expansion, and modified rejection sampling.
  • • Evaluated signature variability, performance, and verification success rates, ensuring compliance with NIST post-quantum security standards.
  • • Optimized and benchmarked the modified Dilithium implementation using C (OpenSSL) and GCC 11.3 on Ubuntu, achieving reproducible performance results.
  • • Contributed to a comparative study of Kyber (KEM) and Dilithium (signatures), analyzing efficiency and robustness trade-offs.
COpenSSLCryptographyPost-QuantumNIST StandardsLinux

→ View Repository

Projects

RMc7 — Production C Compiler

A production-oriented C compiler in C++17 targeting 90–95% ISO C coverage, built on a modular architecture with advanced type analysis and long-term extensibility.

Dec 2025 – Present

  • • Implemented a complete lexical subsystem with ~140 token types, full operator coverage, and precise source-location tracking.
  • • Engineered advanced parser and type-system components for complex C declarators, function signatures, storage classes, qualifiers, and multi-level pointer semantics.
C++17Lexical AnalysisType Systemsx86-64
→ GitHub Repository

RMc4 — Complete C Compiler in C

A fully implemented C compiler built in C, covering all major compilation phases with a complete front-end, optimization layer, and x86-64 backend.

Oct 2025 – Nov 2025

  • • Implemented full compiler pipeline including tokenization, parsing, semantic analysis, TAC, optimization passes, and x86-64 code generation.
  • • Designed recursive-descent parser and AST system with correct operator precedence, type checking, and structured error handling.
CCompiler DesignASTCFGx86-64
→ GitHub Repository

RM-JobIn — Job Recruitment Platform

A MERN-based recruitment system with role-based access control and personalized dashboards for job seekers and recruiters.

March 2025 – April 2025

  • • Implemented secure JWT-based authentication with separate access flows for users and recruiters.
  • • Developed complete job posting, application tracking, and dashboard workflows across both roles.
ReactNode.jsExpressMongoDB
→ GitHub Repository

RM-Chatify — Real-Time Chat Application

A web-based real-time chat application using Socket.IO for instant messaging and live user connection tracking.

March 2025

  • • Implemented WebSocket-driven real-time messaging with presence tracking.
  • • Added persistent chat storage and user-centric conversation management.
Node.jsExpressSocket.IOMongoDB
→ GitHub Repository

RM-SH — E-commerce Platform

A full-stack e-commerce application built with Node.js, Express, MongoDB, and EJS.

Mid Feb 2024 – Early Mar 2024

  • • Implemented user authentication and account management.
  • • Built cart, wishlist, and product management workflows.
Node.jsExpressMongoDBEJS
→ GitHub Repository

Open-Source Contributions

GCC — GNU Compiler Collection

Developed a -fanalyzer patch to model getenv, enabling symbolic NULL/non-NULL path bifurcation and improving diagnostics for unsafe environment-variable usage.

GCCStatic AnalysisCompilersC++
→ View PR

QEMU Vector Engine — PR #LMUL-Fix

Correctness fix to RVV `vsetvl` handling by implementing the proper fractional LMUL–SEW divisor legality check in the RISC-V vector execution logic.

RISC-VRVVVector ISASystemsC
→ View PR

Spike RISC-V ISA Simulator — PR #2218

Architecture-level correctness fix contributed upstream to the official RISC-V ISA reference simulator.

RISC-VISA SimulationSystemsC++
→ View PR

Skills

Systems Programming & Compiler

CC++ (C++17)Lexical AnalysisParsingASTsIR DesignCFGsData-Flow Analysisx86-64 AssemblyOptimization

Programming Languages

C/C++PythonJavaJavaScript

Databases & Cloud

MongoDBSQLAWS

Core CS

Data StructuresAlgorithmsOperating SystemsComputer NetworksCryptography

Get In Touch

I'm always open to new opportunities and collaborations.

Email: khurana.ridham222@gmail.com

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