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".
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The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. Copyrights notice
MDC-4 é a versão aprimorada do MDC-2, que é um modo hash bem conhecido de cifras de bloco. No entanto, não garante títulos suficientes necessários para uma função de hash criptográfico. No modelo de cifra ideal, a função de compactação MDC-4 tem a segurança de colisão vinculada próxima a 25n/8 e a segurança da pré-imagem está próxima de 25n/4, onde a cifra de bloco subjacente tem o tamanho de bloco de n pedaços. Estudamos como melhorar o MDC-4 com modificações simples para fortalecer sua segurança. É um trabalho significativo porque os usuários geralmente desejam melhorar seus sistemas familiares com baixo custo. Neste artigo, conseguimos isso propondo o MDC-4+, que é uma variação leve do MDC-4. Provamos que MDC-4+ é muito mais seguro que o MDC-4, mostrando que tem a segurança de colisão próxima do ideal 2n e a segurança da pré-imagem está próxima de 24n/3. Também discutimos sua eficiência comparando os modos hash existentes.
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
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@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},}
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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 -