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专利名称：ENCRYPTION/DECRYPTION DEVICE,
ENCRYPTION/DECRYPTION DEVICEMANUFACTURING DEVICE, AND METHOD,AND COMPUTER PROGRAM
发明人：SHIBUTANI, KYOJI,SHIRAI, TAIZO申请号：EP07706357申请日：20070104公开号：EP1978496A4公开日：20110608
摘要：A Feistel type common key block cipher process configuration capable ofmaintaining the involution property and safety and easily changing the number of roundsis realized. The Feistel type cipher process configuration having an SP type F functionwhich includes a nonlinear conversion section and a linear conversion section configuresan n-round basic unit which has a matrix arrangement satisfying involution property andODM-MR or SDM-MR which is a preset F function arrangement condition. For this unit, anF function satisfying the arrangement condition of the F function is selected and added ora plurality of basic units are connected so as to constitute the Feistel cipher configurationhaving an increased number of rounds having the arrangement satisfying the involutionproperty and the ODM-MR or the SDM-MR.
申请人：SONY CORPORATION
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