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Title:
Biclique Cryptanalysis of Lightweight Block Ciphers PRESENT, Piccolo and LED
Authors: Kitae Jeong, HyungChul Kang, Changhoon Lee, Jaechul Sung, Seokhie Hong
Abstract:In this paper, we evaluate the security of lightweight block ciphers PRESENT, Piccolo and LED against biclique cryptanalysis. To recover the secret key of PRESENT-80/128, our attacks require 2^{79.76} full PRESENT-80 encryptions and 2^{127.91} full PRESENT-128 encryptions, respectively. Our attacks on Piccolo-80/128 require computational complexities of 2^{79.13} and 2^{127.35}, respectively. The attack on a 29-round reduced LED-64 needs 2^{63.58} 29-round reduced LED-64 encryptions. In the cases of LED-80/96/128, we propose the attacks on two versions. First, to recover the secret key of 45-round reduced LED-80/96/128, our attacks require computational complexities of 2^{79.45}, 2^{95.45} and 2^{127.45}, respectively. To attack the full version, we require computational complexities of 2^{79.37}, 2^{95.37} and 2^{127.37}, respectively. However, in these cases, we need the full codebook. These results are superior to known biclique cryptanalytic results on them.
ePrint: https://eprint.iacr.org/2012/621
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