Details

Autor(en) / Beteiligte

• Minier, Marine
• Vaudenay, Serge
• Paul, Goutam

Titel

On the Security of Piccolo Lightweight Block Cipher against Related-Key Impossible Differentials

Ist Teil von

• Progress in Cryptology – INDOCRYPT 2013, p.308-318

Ort / Verlag

Cham: Springer International Publishing

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Piccolo is a new lightweight block cipher proposed at CHES 2011 [13]. It ciphers plaintext blocks of length 64 bits under keys of lengths 80 or 128 bits. It is based on a modified Feistel structure with a variable number of rounds. In this paper, we present two related key impossible differential attacks against 14 rounds of Piccolo-80 and 21 rounds of Piccolo-128 without the whitening layers. The attack against Piccolo-80 has a time and data complexity of 268.19 whereas the time/data complexity of the attack against Piccolo-128 is 2117.77.