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    • 72. 发明申请
    • Information-processing apparatus, control method, program and recording medium
    • 信息处理装置,控制方法,程序和记录介质
    • US20050094805A1
    • 2005-05-05
    • US10979708
    • 2004-11-02
    • Satoshi KitaniTomoyuki Asano
    • Satoshi KitaniTomoyuki Asano
    • G06F12/14G09C1/00H04L9/00H04L9/06H04L9/10H04L9/12H04L9/22H04L9/32H04N5/91H04K1/00
    • H04L9/0662H04L9/0637H04L9/0844H04L9/3242
    • A 4-byte LBA (logical block address) specified in a read command is supplied to first and second IV (initialization vector) generation units. The initialization-vector generation units each extend the LBA to data with a size of 16 bytes by applying typically a hash function to the LBA. The first initialization-vector generation unit outputs the data with a size of 16 bytes to an encryption unit as an initialization vector IV. On the other hand, the second initialization-vector generation unit outputs the data with a size of 16 bytes to a decryption unit as an initialization vector IV. The encryption unit encrypts input data by using the initialization vector IV and a session key Ks received from a first authentication-processing unit. On the other hand, the decryption unit decrypts input data by using the initialization vector IV and the session key Ks received from a second authentication-processing unit. In this way, data can be encrypted and decrypted by using the initialization vector IV. The present invention can be applied to a personal computer and a drive, which exchange data with each other by way of a predetermined interface.
    • 在读命令中指定的4字节LBA(逻辑块地址)被提供给第一和第二IV(初始化向量)生成单元。 初始化向量生成单元通过将典型的哈希函数应用于LBA,将LBA扩展为具有16字节大小的数据。 第一初始化向量生成单元将具有16字节大小的数据作为初始化向量IV输出到加密单元。 另一方面,第二初始化向量生成单元将具有16字节大小的数据作为初始化向量IV输出到解密单元。 加密单元通过使用从第一认证处理单元接收到的初始化向量IV和会话密钥Ks来加密输入数据。 另一方面,解密单元通过使用从第二认证处理单元接收的初始化向量IV和会话密钥Ks来解密输入数据。 以这种方式,可以使用初始化向量IV对数据进行加密和解密。 本发明可以应用于通过预定接口彼此交换数据的个人计算机和驱动器。