Applied CryptographyBuilt on Proof, Not Promise
Obsidus Labs is an applied cryptography research firm. We help organizations translate complex product and security requirements into practical cryptographic protocols with rigorous security guarantees.
12+
Years
Research experience in applied cryptography
20+
Publications
ACM CCS, EUROCRYPT, ASIACRYPT, NDSS, PETS, and other venues
3
U.S. Patents
Cryptographic protocol and systems innovation
Industry
Collaborations
IBM Research, VISA Research, Cloudflare, Snap, Mysten Labs, Hashgraph, and others
Academic
Collaborations
Northwestern University, Purdue University, CISPA, IISc Bangalore, ASU, and others
Peer
Recognition
Invited to review research papers at IEEE S&P, USENIX Security, PETS and others
Problem Translation
Translate product constraints and requirements into well-defined cryptographic problems.
Protocol Design
Transform well-defined cryptographicproblems into rigorously designedprotocols with formal security guarantees.
Construction Review
Review of cryptographic primitives,protocol components, and constructionchoices against stated security goals.
Proof Design & Review
Security models, proof outlines, andformal analysis toward provably secureprotocol constructions.
Security Analysis
Rigorous threat modeling and adversarialanalysis of trust assumptions, attacksurfaces, and risks in protocol designs.
Technical Documentation
Review of specifications, whitepapers,and research reports for correctness,completeness, and technical accuracy.
Blockchain & Digital Assets
Designing secure cryptographic protocolsfor blockchain infrastructure, digitalasset custody, threshold cryptographicsystems, and post-quantum readiness forlong-term protocol security.
Privacy-Preserving Systems
Building privacy-preserving systems withzero-knowledge proofs and secure MPC,confidential computing, anonymouscredentials, and secure data sharingacross sensitive workflows.
Digital Identity & Authentication
Designing privacy-preserving digitalidentity with verifiable credentials,decentralized identity, anonymous andthreshold authentication, and secureaccount recovery mechanisms.
Post-Quantum Cryptography
Supporting design and migration ofcryptographic systems for post-quantumera—hybrid deployments, cryptographicagility, long-term data protection, andpost-quantum protocol design.
Cryptographic Protocol Design
Designing and analyzing cryptographicprotocols with rigorous securityguarantees, formal analysis, efficiencyoptimization, and implementation-orientedguidance for engineering teams.
Technical Due Diligence
Providing independent technical duediligence for venture capital firms,protocol teams, and enterprises throughwhitepaper review, protocol assessment,and expert technical advisory.
Founder & Director
Pratik Sarkar is the Founder of Obsidus Labs. He established the firm to help organizations translate complex security and product requirements into deployable cryptographic protocols backed by rigorous analysis. Before founding Obsidus Labs, he was a Research Scientist at Supra Research, where he developed blockchain-native cryptographic protocols, and held research positions on the cryptography teams at Visa Research and Meta Statistics and Privacy.
Pratik received his Ph.D. in Cryptography from Boston University under Prof. Ran Canetti and a Masters in Cryptography from IISc Bangalore under Prof. Arpita Patra. His work centers on secure multiparty computation, zero-knowledge proofs, and privacy-preserving protocols for systems that must remain secure under real-world deployment constraints.
Articles
Blogs & Insights
Technical writeups and perspectives on cryptographic protocols, emerging technologies, and industry developments.
Research
Publications & Patents
Explore our research spanning post-quantum cryptography, secure computation, privacy and advanced cryptographic protocols.
Contact Obsidus Labs
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You can also reach out directly at hello@obsiduslabs.com.
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