Abstract:

On the basis of analyzing the theories and characteristics of matrix multiplicative which is used in block ciphers and the characters of logic circuit, the authors presented a theory and method of designing a dynamic reconfigurable hardware architecture of matrix multiplicative. The analog circuit on computer proves that the circuit which is designed according to the method presented in this paper is effective in keeping the efficiency of circuit and  improves the flexibility of the circuit.

Key words: block cipher, matrix multiplicative, galois field