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1 Conference paper

An Update on the Side Channel Cryptanalysis of MACs Based on Cryptographic Hash Functions

Gauravaram, Praveen; Okeya, Katsuyuki

Progress in Cryptology – Indocrypt 2007 — 2007, pp. 393-403

, we propose new hybrid NMAC/HMAC schemes for security against side channel attacks assuming that their underlying block cipher is ideal. We show a hybrid NMAC/HMAC proposal which can be instantiated with DM and a slight variant to it allowing NMAC/HMAC to use hash functions such as SHA-1. We then show

Year: 2007

Language: English

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efikbjg mdha clopn
2 Conference paper

An update on the side channel cryptanalysis of MACs based on cryptographic hash functions

Gauravaram, Praveen; Okeya, Katsuyuki

Indocrypt 2007 — 2007, pp. 393-403

is that the implementations of HMAC/NMAC with the Davies-Meyer (DM) compression function based hash functions such as MD5 and SHA-1 are vulnerable to side channel attacks. In this paper, first we show a partial key recovery attack on NMAC/HMAC based on Okeya's two refined PGV schemes by taking practical constraints

Year: 2007

Language: English

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mcjghna dk lifo pbe

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