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    • 2. 发明申请
    • INVERSE MIXCOLUMN BLOCK DEVICE AND METHOD OF PERFORMING MULTIPLICATION CALCULATION USING THE SAME
    • 反相混合胶片装置及使用其进行多项式计算的方法
    • WO2008069388A2
    • 2008-06-12
    • PCT/KR2007/003054
    • 2007-06-25
    • Electronics and Telecommunications Research InstituteSAMSUNG ELECTRONICS CO., LTD.OH, Jung-HoonLEE, Yong-SuKIM, Young-Il
    • OH, Jung-HoonLEE, Yong-SuKIM, Young-Il
    • H04L9/06
    • H04L9/0631H04L2209/12
    • The present invention relates to an Inverse MixColumn block device and a method of performing a multiplication operation using the same. According to an exemplary embodiment of the present invention, an Inverse MixColumn block device includes a storage unit that stores input data of a bit unit as a byte unit and outputs stored input bytes, a first multiplication operation block unit that performs and outputs multiplication operations of {01 }, {02}, {04}, and {08} as hexadecimal values for the input bytes that are received from the storage unit, a second multiplication operation block unit that performs and outputs multiplication operations of {09}, {0b}, {0d}, and {0e} as hexadecimal values by using the {01 }, {02}, {04}, and {08} multi¬ plication operation results received from the first multiplication operation block unit, and an exclusive logical sum operation unit that performs an exclusive logical sum operation on the {09}, {0b}, {0d}, and {0e} multiplication operation results received from the second multi¬ plication operation block unit and outputs output bytes for the input bytes. As such, if the Inverse MixColumn block device composed of a multiplier is implemented by simple hardware modules, encryption performance can be improved, and the Inverse MixColumn block device can be easily used in a portable apparatus that has a small size and low power consumption.
    • 本发明涉及一种反相混合块装置及使用其进行乘法运算的方法。 根据本发明的示例性实施例,反向混合块模块装置包括:存储单元,存储位单元的输入数据作为字节单元,并输出存储的输入字节;第一乘法运算块单元,其执行并输出乘法运算 {01},{02},{04}和{08}作为从存储单元接收的输入字节的十六进制值,第二乘法运算块单元,执行并输出{09},{0b },{0d}和{0e}作为十六进制值,使用从第一乘法运算块单元接收的{01},{02},{04}和{08}多重运算结果, 和操作单元,对从第二加倍运算块单元接收的{09},{0b},{0d}和{0e}乘法运算结果执行异或运算,并输出输入字节的输出字节。 这样,如果由简单的硬件模块实现由乘法器组成的反向混合块模块,则可以提高加密性能,并且可以容易地在具有小尺寸和低功耗的便携式设备中使用反向混合块模块装置。