In order to achieve small area implementation of encryption in resource-constrained smart cards, we studied the hardware optimal implementation of electronic product code block cipher(EPCBC) encryption algorithm. Firstly, each operation is accomplished only once, and the main program calls the 32 times to complete the encryption. Secondly, the same register is used in the S-box and key transformation so that the number of required registers is reduced. Thirdly, the cipher round operation and key update are put in the same module. Through field ...
