Performance Improvement of Power attack with Truncated Differential Cryptanalysis

Kang, Tae-Sun; Kim, Hee-Seok; Kim, Tae-Hyun; Kim, Jong-Sung; Hong, Seok-Hie

Performance Improvement of Power attack with Truncated Differential Cryptanalysis

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부정차분을 이용한 전력분석공격 향상

Type: Proceeding

Author: Kang, Tae-Sun (고려대학교 정보보호대학원) Kim, Hee-Seok (고려대학교 정보보호대학원) Kim, Tae-Hyun (고려대학교 정보보호대학원) Kim, Jong-Sung (고려대학교 정보보호대학원) Hong, Seok-Hie (고려대학교 정보보호대학원)

Journal: 한국정보통신설비학회 한국정보통신설비학회 학술대회 한국정보통신설비학회 2008년도 정보통신설비 학술대회

Published: 2008.1

Pages: 155 - 158 (4page)

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Performance Improvement of Power attack with Truncated Differential Cryptanalysis

Research history (2)

2009

Performance Improvement of Power Attacks with Truncated Differential Cryptanalysis

Taesun Kang , Hee-Seok Kim , Tae-Hyun Kim and others 2 Journal of the Korea Institute of Information Security & Cryptology 2009.02 Academic journal

2008

Performance Improvement of Power attack with Truncated Differential Cryptanalysis

Kang , Tae-Sun , Kim and others 7 한국정보통신설비학회 학술대회 2008.01 Proceeding

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In 1989, Kocher et al. introduced Differential Power Attack on block ciphers. This attack allows to extract secret key used in cryptographic computations even if these are executed inside tamper-resistant devices such as smart card. Since 1989, many papers were published to improve resistance of DPA. At FSE 2003 and 2004, Akkar and Goubin presented several masking methods to protect iterated block ciphers such as DES against Differential Power Attack. The idea is to randomize the first few and last few rounds(3 $\sim$ 4 round) of the cipher with independent random masks at each round and thereby disabling power attacks on subsequent inner rounds. This paper show how to combine truncated differential cryptanalysis applied to the first few rounds of the cipher with power attacks to extract the secret key from intermediate unmasked values.

#truncated differential cryptanalysis #power analysis #Hamming Weights #blind cryptanalysis

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