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1. 发明授权

US07290148B2 Encryption and decryption communication semiconductor device and recording/reproducing apparatus 失效
标题翻译：加密和解密通信半导体器件和记录/再现装置
公开(公告)号：US07290148B2
公开(公告)日：2007-10-30
申请号：US10352876
申请日：2003-01-29
申请人： Jun Tozawa , Hiroshi Nogami , Tetsuya Shibayama , Tomohiro Kataoka , Hiroshi Fujio
发明人： Jun Tozawa , Hiroshi Nogami , Tetsuya Shibayama , Tomohiro Kataoka , Hiroshi Fujio
IPC分类号： H04L9/00 , H04K1/00
CPC分类号： H04N5/913 , G11B20/00086 , G11B20/0021 , G11B20/00246 , G11B20/00413 , H04N5/765 , H04N5/775 , H04N5/781 , H04N9/8042 , H04N2005/91364
摘要： Disclosed herein is an encryption and decryption communication semiconductor device comprising at least, a communication interface for performing a transfer of data according to a predetermined communication system, one or two or more encryption/decryption circuits which encrypt or decrypt input data in accordance with a predetermined algorithm, and a plurality of external interfaces for performing the input/output of data from and to external devices. The communication interface, the encryption/decryption circuits and the plurality of external interfaces are formed on one semiconductor chip. In the cryption and decryption communication semiconductor device, input data sent from any one of the plurality of external interfaces is encrypted or decrypted by at least one of the encryption/decryption circuits and is capable of being outputted to any different one of the plurality of external interfaces.
摘要翻译：本文公开了一种加密和解密通信半导体装置，至少包括用于根据预定通信系统执行数据传输的通信接口，根据预定的加密/解密电路对输入数据进行加密或解密的一个或两个以上加密/解密电路算法和用于执行从外部设备到外部设备的数据的输入/输出的多个外部接口。通信接口，加密/解密电路和多个外部接口形成在一个半导体芯片上。在加密解密通信半导体装置中，从多个外部接口中的任何一个发送的输入数据由加密/解密电路中的至少一个加密或解密，并能够输出到多个外部接口中的任意一个接口

2. 发明授权

US07107458B2 Authentication communicating semiconductor device 失效
标题翻译：认证通信半导体器件
公开(公告)号：US07107458B2
公开(公告)日：2006-09-12
申请号：US09864304
申请日：2001-05-25
申请人： Toshihisa Oishi , Jun Tozawa , Tetsuya Shibayama , Masato Hamada
发明人： Toshihisa Oishi , Jun Tozawa , Tetsuya Shibayama , Masato Hamada
IPC分类号： H04L9/32
CPC分类号： H04L63/0428 , H04L63/08 , H04L63/14 , H04N5/765 , H04N5/77 , H04N5/775 , H04N5/913 , H04N2005/91364
摘要： In an authentication communicating semiconductor device to enhance protection against illegal copying, a logic analyzer probe or the like is connected to a CPU bus to suppress possibility in which the authentication process is intercepted and is analyzed to break the mechanism of illegal copy protection and the electronic device is modified to set a tampered encryption key to the CPU bus. The authentication communicating semiconductor device includes a semiconductor chip, a main processing unit formed on the chip for generating a key code according to a predetermined algorithm, for determining approval/non-approval of communication of data with an external device, and for controlling the communication; an encryption unit formed on the chip for encrypting and decoding communication data using the key code generated by the main processing unit, and an interface unit formed on the chip for conducting communication with an upper-layer or a lower-layer according to a predetermined protocol.
摘要翻译：在加密认证通信半导体装置中，为了防止非法复制，逻辑分析器探头等连接到CPU总线，以抑制认证过程被拦截的可能性，并被分析以破坏非法拷贝保护的机制和电子设备被修改为将篡改的加密密钥设置到CPU总线。认证通信半导体装置包括半导体芯片，形成在芯片上的主处理单元，用于根据预定算法生成密钥代码，用于确定与外部设备的数据通信的批准/不批准，以及用于控制通信 ; 在芯片上形成的加密单元，用于使用由主处理单元生成的密钥代码对通信数据进行加密和解码;以及接口单元，形成在芯片上，用于根据预定协议进行与上层或下层的通信。

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