Information-processing apparatus, control method, program and recording medium
    72.
    发明申请
    Information-processing apparatus, control method, program and recording medium 失效
    信息处理装置,控制方法,程序和记录介质

    公开(公告)号:US20050094805A1

    公开(公告)日:2005-05-05

    申请号:US10979708

    申请日:2004-11-02

    摘要: 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.

    摘要翻译: 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。

    Information processing apparatus, information processing method, information processing system and recording medium
    73.
    发明授权
    Information processing apparatus, information processing method, information processing system and recording medium 失效
    信息处理装置,信息处理方法,信息处理系统和记录介质

    公开(公告)号:US06697945B2

    公开(公告)日:2004-02-24

    申请号:US09059812

    申请日:1998-04-14

    IPC分类号: H04L900

    摘要: An information processing apparatus and an information processing method are capable of preventing information from being copied illegally. To put it in detail, a hash function and a service key are stored in advance in an EEPROM of a DVD player serving as a source. In an EEPROM of a personal computer (PC) serving as a sink, on the other hand, its ID and a license key are stored beforehand. The DVD player requests the PC to transmit the ID. The DVD player then applies the hash function to data resulting from concatenation of the ID with the service key to generate a license key (=hash (ID ∥ service-key)). Subsequently, the DVD player generates a source side common session key and encrypts the session key by using the generated license key. Then, the DVD player transmits the encrypted source side common session key to the PC. The PC decrypts the encrypted source side common session key by using the license key stored in its EEPROM to produce a sink side common session key which has a value equal to that of the source side common session key.

    摘要翻译: 信息处理装置和信息处理方法能够防止信息被非法复制。为了详细地将哈希函数和服务密钥预先存储在作为源的DVD播放器的EEPROM中。 另一方面,在用作信宿的个人计算机(PC)的EEPROM中,事先存储其ID和许可证密钥。 DVD播放器请求PC传送ID。 然后,DVD播放器将散列函数应用于由ID与服务密钥连接产生的数据,以产生许可密钥(= hash(ID∥service-key))。 随后,DVD播放器生成源侧公共对话密钥,并通过使用所生成的许可证密钥来加密会话密钥。 然后,DVD播放器将加密的源侧公共会话密钥发送到PC。 PC通过使用存储在其EEPROM中的许可证密钥来解密加密的源侧公共会话密钥,以产生具有等于源侧公共会话密钥的值的宿侧公共会话密钥。

    Appliance authentication system, and method of controlling power supply
    78.
    发明授权
    Appliance authentication system, and method of controlling power supply 失效
    设备认证系统和电源控制方法

    公开(公告)号:US08364961B2

    公开(公告)日:2013-01-29

    申请号:US13008483

    申请日:2011-01-18

    IPC分类号: G06F21/00

    摘要: Provided is a method where a power management apparatus (a) acquires, from a server managed by a manufacturer of an electronic appliance, a public key paired with a secret key that the electronic appliance and the server hold, (b) generates a ciphertext by generating a random number and encrypting the random number by the public key, and (c) transmits the ciphertext to the electronic appliance and the server, where the electronic appliance (d) restores the random number by decrypting the ciphertext transmitted in (c), (e) causes an electrical part to operate, based on the random number, and (f) transmits to the server the value of current flowing through the electrical part, and where the server (g) restores the random number by decrypting the ciphertext transmitted in (c), (h) calculates the value of current to flow through the electrical part based on the random number, and (i) compares values of current.

    摘要翻译: 提供一种方法,其中电源管理装置(a)从由电子设备的制造商管理的服务器中获取与电子设备和服务器保持的秘密密钥配对的公共密钥,(b)通过以下方式生成密文: 生成随机数,并通过公钥对随机数进行加密,(c)将密文发送到电子设备和服务器,电子设备(d)通过解密(c)中发送的密文来恢复随机数, (e)使电气部件基于随机数进行操作,并且(f)向服务器发送流过电气部件的电流的值,并且服务器(g)通过解密发送的密文来恢复随机数 在(c)中,(h)基于随机数计算流经电气部件的电流值,(i)比较电流值。

    Information playing/reproducing apparatus and method
    80.
    发明授权
    Information playing/reproducing apparatus and method 有权
    信息播放/再现装置和方法

    公开(公告)号:US08112811B2

    公开(公告)日:2012-02-07

    申请号:US12613255

    申请日:2009-11-05

    IPC分类号: H04L9/00

    摘要: A block key to encrypt block data is generated using an ATS (arrival time stamp) appended to each of TS (transport stream) packets included in a transport stream correspondingly to the arrival time of the TS packet. The ATS is a random data depending upon an arrival time, and so a block-unique key can be generated, which enhances the protection against data cryptanalysis. A block key is generated from a combination of an ATS with a key unique to a device, recording medium or the like such as a master key, disc-unique key, title-unique key or the like. Since an ATS is used to generate a block key, any area for storage of an encryption key for each block may not be provided in a recording medium.

    摘要翻译: 使用与TS分组的到达时间相对应的附加到包括在传输流中的每个TS(传输流)分组的ATS(到达时间戳)来生成加密块数据的块密钥。 ATS是根据到达时间的随机数据,因此可以生成块唯一密钥,这增强了对数据密码分析的保护。 块密钥是从ATS与设备唯一的密钥,诸如主密钥,盘唯一密钥,标题 - 唯一密钥等的记录介质等的组合生成的。 由于使用ATS来生成块密钥,因此可能不会在记录介质中提供用于存储每个块的加密密钥的任何区域。