The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. ex. Some numerals are expressed as "XNUMX".
Copyrights notice
The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. Copyrights notice
MDC-4는 잘 알려진 블록 암호의 해시 모드인 MDC-2의 향상된 버전입니다. 그러나 암호화 해시 함수에 필요한 충분한 보안을 보장하지는 않습니다. 이상적인 암호 모델에서 MDC-4 압축 기능의 충돌 보안 경계는 2에 가깝습니다.5n/8 사전 이미지 보안은 2에 가깝습니다.5n/4여기서 기본 블록 암호의 블록 크기는 다음과 같습니다. n 비트. 우리는 MDC-4의 보안성을 강화하기 위해 간단한 수정만으로 MDC-4를 개선할 수 있는 방법을 연구했습니다. 사용자는 종종 저렴한 비용으로 익숙한 시스템을 개선하고 싶어하기 때문에 의미 있는 작업입니다. 본 논문에서는 MDC-XNUMX를 제안하여 이를 달성한다.+, 이는 MDC-4의 가벼운 변형입니다. 우리는 MDC-4를 증명합니다+ 충돌 보안이 최적 4에 가깝다는 것을 보여줌으로써 MDC-2보다 훨씬 더 안전합니다.n 사전 이미지 보안은 2에 가깝습니다.4n/3. 또한 기존 해시 모드를 비교하여 효율성을 논의합니다.
Deukjo HONG
Chonbuk National University
Dong-Chan KIM
Kookmin University
Daesung KWON
the Attached Institute of ETRI
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Deukjo HONG, Dong-Chan KIM, Daesung KWON, "Improving MDC-4 to Be More Secure" in IEICE TRANSACTIONS on Fundamentals,
vol. E102-A, no. 1, pp. 278-289, January 2019, doi: 10.1587/transfun.E102.A.278.
Abstract: MDC-4 is the enhanced version of MDC-2, which is a well-known hash mode of block ciphers. However, it does not guarantee sufficient securities required for a cryptographic hash function. In the ideal cipher model, the MDC-4 compression function has the collision security bound close to 25n/8 and the preimage security bound close to 25n/4, where the underlying block cipher has the block size of n bits. We have studied how to improve MDC-4 with simple modification to strengthen its security. It is meaningful work because users often want to improve their familiar systems with low cost. In this paper, we achieve it by proposing MDC-4+, which is a light variation of MDC-4. We prove that MDC-4+ is much more secure than MDC-4 by showing that it has the collision security bound close to optimal 2n and the preimage security bound close to 24n/3. We also discuss its efficiency by comparing existing hash modes.
URL: https://global.ieice.org/en_transactions/fundamentals/10.1587/transfun.E102.A.278/_p
부
@ARTICLE{e102-a_1_278,
author={Deukjo HONG, Dong-Chan KIM, Daesung KWON, },
journal={IEICE TRANSACTIONS on Fundamentals},
title={Improving MDC-4 to Be More Secure},
year={2019},
volume={E102-A},
number={1},
pages={278-289},
abstract={MDC-4 is the enhanced version of MDC-2, which is a well-known hash mode of block ciphers. However, it does not guarantee sufficient securities required for a cryptographic hash function. In the ideal cipher model, the MDC-4 compression function has the collision security bound close to 25n/8 and the preimage security bound close to 25n/4, where the underlying block cipher has the block size of n bits. We have studied how to improve MDC-4 with simple modification to strengthen its security. It is meaningful work because users often want to improve their familiar systems with low cost. In this paper, we achieve it by proposing MDC-4+, which is a light variation of MDC-4. We prove that MDC-4+ is much more secure than MDC-4 by showing that it has the collision security bound close to optimal 2n and the preimage security bound close to 24n/3. We also discuss its efficiency by comparing existing hash modes.},
keywords={},
doi={10.1587/transfun.E102.A.278},
ISSN={1745-1337},
month={January},}
부
TY - JOUR
TI - Improving MDC-4 to Be More Secure
T2 - IEICE TRANSACTIONS on Fundamentals
SP - 278
EP - 289
AU - Deukjo HONG
AU - Dong-Chan KIM
AU - Daesung KWON
PY - 2019
DO - 10.1587/transfun.E102.A.278
JO - IEICE TRANSACTIONS on Fundamentals
SN - 1745-1337
VL - E102-A
IS - 1
JA - IEICE TRANSACTIONS on Fundamentals
Y1 - January 2019
AB - MDC-4 is the enhanced version of MDC-2, which is a well-known hash mode of block ciphers. However, it does not guarantee sufficient securities required for a cryptographic hash function. In the ideal cipher model, the MDC-4 compression function has the collision security bound close to 25n/8 and the preimage security bound close to 25n/4, where the underlying block cipher has the block size of n bits. We have studied how to improve MDC-4 with simple modification to strengthen its security. It is meaningful work because users often want to improve their familiar systems with low cost. In this paper, we achieve it by proposing MDC-4+, which is a light variation of MDC-4. We prove that MDC-4+ is much more secure than MDC-4 by showing that it has the collision security bound close to optimal 2n and the preimage security bound close to 24n/3. We also discuss its efficiency by comparing existing hash modes.
ER -