ETRI Journal

  • 제33권4호
  • /
  • Pages.611-620
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  • 2011
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  • 1225-6463(pISSN)
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  • 2233-7326(eISSN)
한국전자통신연구원 (Electronics and Telecommunications Research Institute)
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Low-Power Design of Hardware One-Time Password Generators for Card-Type OTPs

  • Lee, Sung-Jae (Korea Internet & Security Agency) ;
  • Lee, Jae-Seong (School of Electrical and Computer Engineering, Hanyang University) ;
  • Lee, Mun-Kyu (School of Computer and Information Engineering, Inha University) ;
  • Lee, Sang-Jin (School of Information Management and Security, Korea University) ;
  • Choi, Doo-Ho (Software Research Laboratory, ETRI) ;
  • Kim, Dong-Kyue (School of Electrical and Computer Engineering, Hanyang University)
  • 투고 : 2010.07.05
  • 심사 : 2011.04.07
  • 발행 : 2011.08.30
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초록

Since card-type one-time password (OTP) generators became available, power and area consumption has been one of the main issues of hardware OTPs. Because relatively smaller batteries and smaller chip areas are available for this type of OTP compared to existing token-type OTPs, it is necessary to implement power-efficient and compact dedicated OTP hardware modules. In this paper, we design and implement a low-power small-area hardware OTP generator based on the Advanced Encryption Standard (AES). First, we implement a prototype AES hardware module using a 350 nm process to verify the effectiveness of our optimization techniques for the SubBytes transform and data storage. Next, we apply the optimized AES to a real-world OTP hardware module which is implemented using a 180 nm process. Our experimental results show the power consumption of our OTP module using the new AES implementation is only 49.4% and 15.0% of those of an HOTP and software-based OTP, respectively.

키워드

참고문헌

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