About Me
I am a Computer Science PhD student at George Mason University, co-advised by Dr. Foteini Baldimtsi and Dr. Giuseppe Ateniese. My research lies in applied cryptography and privacy, with a focus on practical protocols for metadata-private communication. My recent work, Oblivious Signaling, uses fully homomorphic encryption to provide receiver-message unlinkability and appears at USENIX Security 2026.
My broader interests include digital identity and privacy-enhancing systems. At Cloudflare Research, I worked with Dr. Ethan Heilman on Bring Your Own IdP, accepted at SSR ‘26. We developed delegated attestation protocols that let services authenticate users through existing identity providers without registering with each provider or requiring changes to the providers themselves. Before graduate study, I spent more than five years building, securing, and optimizing large-scale fintech systems used by millions of people.
My undergrad thesis was supervised by Dr. Md Sadek Ferdous. He has been a true inspiration in my research journey.
Featured Research
USENIX Security '26
Oblivious Signaling
Oblivious Signaling (OSig) is a single-server, FHE-based anonymous messaging scheme that hides message-recipient linkages. Unlike Oblivious Message Retrieval (OMR), whose retrieval cost scales with unread global traffic, OSig moves the privacy-preserving computation to delivery. Recipient checks are fixed-size inbox reads, while server work scales with the receiver anonymity set.
News
Publications
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MKB Shuhan, F Baldimtsi, G Ateniese
35th USENIX Security Symposium (USENIX Security '26), 2026
Anonymous Messaging
Metadata Privacy
Fully Homomorphic Encryption
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MKB Shuhan, E Heilman
Security Standardisation Research (SSR '26), 2026
OpenID Connect
Federated Identity
Delegated Attestation
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MKB Shuhan, SM Hasnayeen, TK Das, MN Sakib, MS Ferdous
International Journal of Information Security
Federated Identity
Blockchain
Formal Verification
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MKB Shuhan, T Islam, EA Shuvo, FH Bappy, K Hasan, C Caicedo
IEEE International Conference on Cyber Security and Cloud Computing (CSCloud), 2023
Secure Messaging
Blockchain
Hyperledger Fabric
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MKB Shuhan, R Dey, S Saha, MSU Anjum, TS Zaman
International Conference on Natural Language Processing and Information Retrieval (NLPIR), 2022
Bengali NLP
Stylometry
Research Dataset
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I Alom, RM Eshita, AI Harun, MS Ferdous, MKB Shuhan, MJM Chowdhury, MS Rahman
IEEE International Conference on Blockchain and Cryptocurrency (ICBC), 2021
Federated Identity
Blockchain
Decentralized Trust
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US Jannat, SM Hasnayeen, MKB Shuhan, MS Ferdous
IEEE International Conference on Electrical, Computer and Communication Engineering (ECCE), 2019
Android Security
Malware Detection
Machine Learning
Talks
Community and Education
FOSS
Blog Posts
Research
- [HelloFuture Orange] Quarks: decentralized and blockchain-secured instant messaging
- [elblog.pl] Quarks: Revolutionizing Digital Communication Security
- [bnnbreaking.com] Discord Data Breach Exposes 760,000 Users: Blockchain Messaging as Future Security Hope
- [TechXplore] A decentralized, blockchain-based messaging network for safer communications
Services
Conference Review
Journal Review
Distinguished Juror
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