Quantcast
Channel: Cryptology ePrint Archive
Viewing all articles
Browse latest Browse all 30398

Malicious Keccak, by Pawel Morawiecki

$
0
0
In this paper, we investigate Keccak --- the cryptographic hash function adopted as the SHA-3 standard. We propose a malicious variant of the function, where new round constants are introduced. We show that for such the variant, collision and preimage attacks are possible. We also identify a class of weak keys for the malicious Keccak working in the MAC mode. Ideas presented in the paper were verified by implementing the attacks on the function with the 128-bit hash.

Viewing all articles
Browse latest Browse all 30398

Trending Articles