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Tushin Mallick

Tushin Mallick appears in the imported research catalog. Authorship, coauthor and topic links are available while profile ownership is still unclaimed.

ResearcherUnclaimed source record
Cryptography and SecurityMultiagent SystemsArtificial IntelligenceDistributed, Parallel, and Cluster ComputingMachine Learning

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Published work

3 published item(s)

preprint2026arXiv

APWA: A Distributed Architecture for Parallelizable Agentic Workflows

Autonomous multi-agent systems based on large language models (LLMs) have demonstrated remarkable abilities in independently solving complex tasks in a wide breadth of application domains. However, these systems hit critical reasoning, coordination, and computational scaling bottlenecks as the size and complexity of their tasks grow. These limitations hinder multi-agent systems from achieving high-throughput processing for highly parallelizable tasks, despite the availability of parallel computing and reasoning primitives in the underlying LLMs. We introduce the Agent-Parallel Workload Architecture (APWA), a distributed multi-agent system architecture designed for the efficient processing of heavily parallelizable agentic workloads. APWA facilitates parallel execution by decomposing workflows into non-interfering subproblems that can be processed using independent resources without cross-communication. It supports heterogeneous data and parallel processing patterns, and it accommodates tasks from a wide breadth of domains. In our evaluation, we demonstrate that APWA can dynamically decompose complex queries into parallelizable workflows and scales on larger tasks in settings where prior systems fail completely.

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preprint2026arXiv

Classifying Implementations of Cryptographic Primitives and Protocols that Use Post-Quantum Algorithms

Classification techniques can be used to analyze system behaviors, network protocols, and cryptographic primitives based on identifiable traits. While useful for defense, such classification can also be leveraged by attackers to infer system configurations, detect vulnerabilities, and tailor attacks such as denial-of-service, key recovery, or downgrade attacks. In this paper, we study the feasibility of classifying post-quantum (PQ) algorithms by analyzing implementations of key exchange and digital signatures, their use within secure protocols, and their integration into SNARK generation libraries. Unlike traditional cryptography, PQ algorithms have larger memory requirements and variable computational costs. Our research examines two post-quantum cryptography libraries, liboqs and CIRCL, evaluating TLS, SSH, QUIC, OpenVPN, and OpenID Connect (OIDC) across Windows, Ubuntu, and macOS. We also analyze pysnark and lattice_zksnark for SNARK generation and verification on Ubuntu. Experimental results show that (1) classical and PQ key exchange and signature algorithms can be distinguished with accuracies of 98% and 100%; (2) specific PQ algorithms can be identified with 97% accuracy for key exchange and 86% for signatures; (3) implementations of the same algorithm in liboqs and CIRCL are distinguishable with up to 100% accuracy; and (4) within CIRCL, PQ and hybrid key exchange implementations can be distinguished with 97% accuracy. For secure protocols, we can determine whether key exchange is classical or PQ and identify the PQ algorithm used. SNARK generation and verification in pysnark and lattice_zksnark are distinguishable with 100% accuracy. We demonstrate real-world applicability by identifying PQ-enabled TLS domains in the Tranco dataset and integrating our methods into QUARTZ, an open-source risk and threat analyzer by Cisco.

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preprint2026arXiv

MAGIQ: A Post-Quantum Multi-Agentic AI Governance System with Provable Security

Our computing ecosystem is being transformed by two emerging paradigms: the increased deployment of agentic AI systems and advancements in quantum computing. With respect to agentic AI systems, one of the most critical problems is creating secure governing architectures that ensure agents follow their owners' communication and interaction policies and can be held accountable for the messages they exchange with other agents. With respect to quantum computing, existing systems must be retrofitted and new cryptographic mechanisms must be designed to ensure long-term security and quantum resistance. In fact, NIST recommends that standard public-key cryptographic algorithms, including RSA, Diffie-Hellman (DH), and elliptic-curve constructions (ECC), be deprecated starting in 2030 and disallowed after 2035. In this paper, we present MAGIQ, a framework for policy definition and enforcement in multi-agent AI systems using novel, highly efficient, quantum-resistant cryptographic protocols with proven security guarantees. MAGIQ (i) allows users to define rich communication and access-control policy budgets for agent-to-agent sessions and tasks, including global budgets for one-to-many agent sessions; (ii) enforces such policies using post-quantum cryptographic primitives; (iii) supports session-based enforcement of policies for agent-to-agent and one-to-many agent sessions; and (iv) provides accountability of agents to their users through message attribution. We formally model and prove the correctness and security of the system using the Universal Composability (UC) framework. We evaluate the computation and communication overhead of our framework and compare it with the state-of-the-art agentic AI framework SAGA. MAGIQ is a first step toward post-quantum-secure solutions for agentic AI systems.

0 citations0 reviewsNo code linkedOpen access