Design and Analysis of an ADPLL -Enhanced Multi-Ring Oscillator TRNG for High security AES Key Generation
Gayathri Natarajan
, Swethasri D , Ramachandran K , Jayasri P , Nandhakumar M
True random pattern generator(TRNG),All Digital Phase Locked Loop(ADPLL),Multi-Ring Oscillator(MRO),Advanced Encryption Standard(AES)
True Random Number Generators (TRNGs) are essential for secure cryptographic systems, particularly for generating unpredictable keys in Advanced Encryption Standard (AES) applications. This work presents the design of an All-Digital Phase-Locked Loop (ADPLL) assisted multi-ring oscillator (MRO) based TRNG to achieve high entropy and improved stability. The proposed architecture utilizes multiple ring oscillators as entropy sources, exploiting intrinsic timing jitter and process variations. The ADPLL regulates oscillator behavior, minimizes frequency drift, and prevents mutual locking, thereby enhancing randomness quality. Outputs from the oscillators are combined using XOR-based techniques and sampled through a flip-flop to extract random bits. A lightweight post-processing unit is incorporated to reduce bias and improve statistical properties. The generated bitstream demonstrates high entropy and passes standard randomness tests. The proposed TRNG is suitable for secure AES key generation in hardware-constrained environments such as embedded systems and IoT devices due to its scalability, low complexity, and robustness.
"Design and Analysis of an ADPLL -Enhanced Multi-Ring Oscillator TRNG for High security AES Key Generation", JETNR - JOURNAL OF EMERGING TRENDS AND NOVEL RESEARCH (www.JETNR.org), ISSN:2984-9276, Vol.4, Issue 6, page no.a631-a636, June-2026, Available :https://rjpn.org/JETNR/papers/JETNR2606082.pdf
Volume 4
Issue 6,
June-2026
Pages : a631-a636
Paper Reg. ID: JETNR_235042
Published Paper Id: JETNR2606082
Downloads: 00092
Research Area: Science and Technology
Country: Padalur,Perambalur(Dt), TAMILNADU, India
DOI: https://doi.org/10.56975/jetnr.v4i6.235042
ISSN: 2984-9276 | IMPACT FACTOR: 9.87 Calculated By Google Scholar | ESTD YEAR: 2023
An International Scholarly Open Access Journal, Peer-Reviewed, Refereed Journal Impact Factor 9.87 Calculate by Google Scholar and Semantic Scholar | AI-Powered Research Tool, Multidisciplinary, Monthly, Multilanguage Journal Indexing in All Major Database & Metadata, Citation Generator
Publisher: RJPN (IJPublication) Janvi Wave
