The New Block Cipher: BC2

10.6633/IJNS.200901.8(1).03

Yusuf Kurniawan；Adang Suwandi A.；M. Sukrisno Mardiyanto；Iping Supriana S.；Sarwono Sutikno

BC2 ； block cipher ； FN function ； heuristic method

International Journal of Network Security

8卷1期（2009 / 01 / 01）

16 - 24

英文

In this paper, we propose a new block cipher called BC2 (Block Cipher 2). We make a cipher using components that are believed secure. The structure of BC2 is very simple. We use Feistel network with input-output 128 bits, matrix Maximum Distance Separable (MDS) 8x8 with branch number 9 to give high diffusion, a function affine equivalent to the inverse function in GF(2^8) that we get from Camellia and Hierocrypt S-Box for confusion and we make FN function, based on FL function of Camellia. We use a heuristic method to count the minimum number of active substitution box at Feistel Network. And we also construct a new key schedule that is fast and secure.

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