发明名称 |
ENCRYPTION/DECRYPTION DEVICE, ENCRYPTION/DECRYPTION METHOD, AND COMPUTER PROGRAM |
摘要 |
It is possible to realize a Feistel-type common key block encryption/decryption processing configuration capable of reducing data stored in a memory at a low cost. The Feistel-type common key block encryption/decryption processing repeatedly executes an SP-type F function having nonlinear and linear transform sections by several rounds. At least one of the nonlinear and linear transform processes executed in the F function in each round is executed as a transform process identical with a transform process applied to an encryption/decryption algorithm other than a Feistel-type common key block encryption/decryption algorithm and/or another hash function such as AES and Whirlpool. With this configuration, it is possible to reduce the design cost and the amount of data stored in a memory.
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申请公布号 |
US2010226493(A1) |
申请公布日期 |
2010.09.09 |
申请号 |
US20070160895 |
申请日期 |
2007.01.04 |
申请人 |
SONY CORPORATION |
发明人 |
SHIRAI TAIZO;SHIBUTANI KYOJI |
分类号 |
H04L9/28 |
主分类号 |
H04L9/28 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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