Bit-pattern Based Integral Attack on ICEBERG

Integral attack is one of the most effective attack against block ciphers. However, traditional integral attack based on byte or word is not available for a bit-oriented cipher. Z´aba et al. introduced a technique named Bit-pattern based integral attack to address this issue. This new type of integral attack traces the propagation of the plaintext structure at bit-level to obtain the property and verify key guesses. In this paper, the bit-pattern based integral attack is applied to ICEBERG - a block cipher efficient in reconfigurable hard-ware. The result shows that 3, 4 and 5 rounds ICEBERG are not immune to this attack. All attacks presented in this paper manage to recover the full subkeys of the final round.