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With the advancement of lightweight applications and high\u2010speed communication, solving the problem of high resource overhead and low throughput of TRNG becomes increasingly important. To overcome the limitations in terms of resource overhead and throughput posed by traditional single\u2010entropy source TRNG, this paper proposes a hybrid entropy source TRNG based on FPGA. This architecture combines the jitter from a ring oscillator (RO) with metastability triggered by the XOR gate to enhance the entropy generation capability of TRNG. Experimental results demonstrate that this proposed structure can be implemented and tested on multiple FPGAs without manual placement and complex postprocessing circuits. It achieves a minimum throughput of 300\u2009Mbps with the minimum entropy greater than 0.996 while only utilizing 19 lookup tables (LUTs) and 4 D\u2010flip\u2010flops (DFFs) as resource overhead.<\/jats:p>","DOI":"10.1002\/cta.4571","type":"journal-article","created":{"date-parts":[[2025,4,23]],"date-time":"2025-04-23T02:54:46Z","timestamp":1745376886000},"page":"473-484","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["A Lightweight and High\u2010Throughput True Random Number Generator Based on Hybrid Entropy Source"],"prefix":"10.1002","volume":"54","author":[{"given":"Yingchun","family":"Lu","sequence":"first","affiliation":[{"name":"School of Microelectronics Hefei University of Technology  Hefei 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