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Presentation 2019-11-01 15:20
Fundamental study on an estimation method of output bits from TERO-based TRNG during frequency injection attack
Saki Osuka, Daisuke Fujimoto, Yuichi Hayashi (NAIST) HWS2019-62 ICD2019-23 Link to ES Tech. Rep. Archives: ICD2019-23
Abstract (in Japanese) (See Japanese page) 
(in English) True random number generators (TRNGs) based on ring oscillators (ROs) are employed in many devices because they can be constructed by logic gates. If a RO-based TRNG is attacked and the randomness is reduced, the system security is affected. As physical attacks on the TRNG, conventional studies mainly focused on reducing the uniformity of random numbers. On the other hand, the feasibility of an attack against the unpredictability of random numbers, which is one of the requirements for randomness, has not been fully discussed. If some of the output bits can be estimated, the entropy of random numbers used for security can be significantly reduced, which is a serious security threat. In this paper, we investigated the possibility of an attack against the unpredictability of TRNG. Specifically, we evaluated the feasibility of estimating the output bits by using the frequency injection attack, which is used to degrade uniformity, and observing changes in TRNG operation caused by attacks.
Keyword (in Japanese) (See Japanese page) 
(in English) True random number generator / Side-channel attack / / / / / /  
Reference Info. IEICE Tech. Rep., vol. 119, no. 260, HWS2019-62, pp. 29-34, Nov. 2019.
Paper # HWS2019-62 
Date of Issue 2019-10-25 (HWS, ICD) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
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Download PDF HWS2019-62 ICD2019-23 Link to ES Tech. Rep. Archives: ICD2019-23

Conference Information
Committee HWS ICD  
Conference Date 2019-11-01 - 2019-11-01 
Place (in Japanese) (See Japanese page) 
Place (in English) DNP Namba SS Bld. 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Hardware Security, etc. 
Paper Information
Registration To HWS 
Conference Code 2019-11-HWS-ICD 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Fundamental study on an estimation method of output bits from TERO-based TRNG during frequency injection attack 
Sub Title (in English)  
Keyword(1) True random number generator  
Keyword(2) Side-channel attack  
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1st Author's Name Saki Osuka  
1st Author's Affiliation Nara Institute Science and Technology (NAIST)
2nd Author's Name Daisuke Fujimoto  
2nd Author's Affiliation Nara Institute Science and Technology (NAIST)
3rd Author's Name Yuichi Hayashi  
3rd Author's Affiliation Nara Institute Science and Technology (NAIST)
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Speaker Author-1 
Date Time 2019-11-01 15:20:00 
Presentation Time 25 minutes 
Registration for HWS 
Paper # HWS2019-62, ICD2019-23 
Volume (vol) vol.119 
Number (no) no.260(HWS), no.261(ICD) 
Page pp.29-34 
#Pages
Date of Issue 2019-10-25 (HWS, ICD) 


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