Toward a Lightweight, Scalable, and Parallel Secure Encryption Engine

• URL: http://arxiv.org/abs/2506.15070v1
• Date: Wed, 18 Jun 2025 02:25:04 GMT
• Title: Toward a Lightweight, Scalable, and Parallel Secure Encryption Engine
• Authors: Rasha Karakchi, Rye Stahle-Smith, Nishant Chinnasami, Tiffany Yu,
• Abstract summary: SPiME is a lightweight, scalable, and FPGA-compatible Secure Processor-in-Memory Encryption architecture.<n>It integrates the Advanced Encryption Standard (AES-128) directly into a Processing-in-Memory framework.<n>It delivers over 25Gbps in sustained encryption throughput with predictable, low-latency performance.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: The exponential growth of Internet of Things (IoT) applications has intensified the demand for efficient, high-throughput, and energy-efficient data processing at the edge. Conventional CPU-centric encryption methods suffer from performance bottlenecks and excessive data movement, especially in latency-sensitive and resource-constrained environments. In this paper, we present SPiME, a lightweight, scalable, and FPGA-compatible Secure Processor-in-Memory Encryption architecture that integrates the Advanced Encryption Standard (AES-128) directly into a Processing-in-Memory (PiM) framework. SPiME is designed as a modular array of parallel PiM units, each combining an AES core with a minimal control unit to enable distributed in-place encryption with minimal overhead. The architecture is fully implemented in Verilog and tested on multiple AMD UltraScale and UltraScale+ FPGAs. Evaluation results show that SPiME can scale beyond 4,000 parallel units while maintaining less than 5\% utilization of key FPGA resources on high-end devices. It delivers over 25~Gbps in sustained encryption throughput with predictable, low-latency performance. The design's portability, configurability, and resource efficiency make it a compelling solution for secure edge computing, embedded cryptographic systems, and customizable hardware accelerators.

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