Data converter
    11.
    发明专利

    公开(公告)号:AU2004306594B2

    公开(公告)日:2010-05-20

    申请号:AU2004306594

    申请日:2004-09-28

    Applicant: PANASONIC CORP

    Abstract: A data converter (1) capable of reducing a size of the total implementation in a device is a processing apparatus that performs secret converting processing predetermined to input data with 64 bits, the data converter including a finite field polynomial cubing unit (10), data integrating units (11a) to (11d), (12) and (13), a first converter (14), a second converter (15), a data splitting unit (16), and a data integrating unit (17). The finite field polynomial cubing unit (10) performs cubing, on the 32 bits data, in the polynomial residue class ring with a value in the finite field GF (28) as a coefficient and respectively outputs data with 32 bits.

    SISTEMA DE PROTECCION DE CONTENIDO, APARATO TERMINAL, METODO DEL APARATO TERMINAL Y SOPORTE DE REGISTRO.

    公开(公告)号:ES2352052T3

    公开(公告)日:2011-02-15

    申请号:ES04701676

    申请日:2004-01-13

    Applicant: PANASONIC CORP

    Abstract: Un sistema de protección de contenido incluyendo un aparato de generación de datos de clave (100) que usa una estructura de árbol para gestionar una pluralidad de claves de dispositivo mantenidas por un aparato terminal (200), y el aparato terminal (200), el aparato de generación de datos de clave (100) para generar información de cabecera basada en una información posicional de claves de dispositivo seleccionadas en la estructura de árbol, una unidad de selección (102), operable para seleccionar una o más claves de dispositivo correspondientes a información de revocación, una unidad de conversión (103) operable para convertir primeros datos de clave usados para encriptar contenido, realizando una conversión predeterminada con el uso de información de conversión generada para una clave de dispositivo seleccionada usada para el encriptado de los primeros datos de clave, generando por ello segundos datos de clave; una unidad de encriptado (105) operable para encriptar los segundos datos de clave usando la clave de dispositivo, generando por ello datos de clave encriptados; una unidad de salida (110) operable para enviar los datos de clave encriptados, que tiene la información de cabecera anexa y el aparato terminal (200) incluye: una unidad de conservación (202) operable para mantener una pluralidad de claves de dispositivo y para mantener información posicional de las claves de dispositivo del aparato terminal en la estructura de árbol; una unidad de obtención (207) operable para obtener los datos de clave encriptados y la información de cabecera que está anexa a los datos de clave encriptados; una unidad de selección (201) operable para seleccionar una de las claves de dispositivo correspondientes a información de revocación, una unidad de desencriptado (203) operable para desencriptar los datos de clave encriptados usando la clave de dispositivo seleccionada mantenida por la unidad de conservación (202), generando por ello los segundos datos de clave; una unidad de conversión (204) operable para generar información de conversión a partir de la información de cabecera y la información posicional, y convertir los segundos datos de clave, realizando una conversión predeterminada con el uso de la información de conversión generada; generando por ello los primeros datos de clave; y una unidad de uso de contenido (205, 206, 208) operable para enviar el contenido desencriptado usando los primeros datos de clave.

    13.
    发明专利
    未知

    公开(公告)号:DE60320612T2

    公开(公告)日:2009-06-10

    申请号:DE60320612

    申请日:2003-03-14

    Applicant: PANASONIC CORP

    Abstract: A service user's personal information that has been verified and to which a digital signature has been attached by a personal information verification apparatus 11 (signed-personal information) is stored in a highly secure form within a service user apparatus 12. For receiving services, the service user apparatus 12 transmits the signed-personal information stored therein, to a service provider apparatus 13. The service provider apparatus 13 verifies the signed-personal information based on the digital signature, and then provides services based on the personal information.

    Information processing unit
    15.
    发明专利
    Information processing unit 有权
    信息处理单元

    公开(公告)号:JP2009070408A

    公开(公告)日:2009-04-02

    申请号:JP2008307370

    申请日:2008-12-02

    Abstract: PROBLEM TO BE SOLVED: To provide a secure device that can download a program exceeding the capacity of the storage area implemented on the TRM, while assuring security required by the administrator of each program. SOLUTION: This information processing unit is provided with: a tamper resistant integrated circuit; and an external storage means outside the tamper resistant integrated circuit, wherein the tamper resistant integrated circuit is provided with: an internal storage means for storing data; a key holding means for holding key information; encryption processing means for encrypting the data stored in the internal storage means using the key information held by the key holding means to store the data in an external storage means; and an error output means for outputting an error to the outside of the tamper resistant integrated circuit when the error occurs in processing performed by the encryption processing means, the external storage means stores the data obtained by encrypting the data stored in the internal storage means using the key information held by the key holding means by the encryption processing means, and stores another piece of data in a free area where the data in the internal storage data are stored. COPYRIGHT: (C)2009,JPO&INPIT

    Abstract translation: 要解决的问题:提供可以下载超过在TRM上实现的存储区域的容量的程序的安全装置,同时确保每个程序的管理员所要求的安全性。 该信息处理单元具有防篡改集成电路; 以及在防篡改集成电路之外的外部存储装置,其中所述防篡改集成电路设置有:用于存储数据的内部存储装置; 用于保存关键信息的关键握持装置; 加密处理装置,用于使用由密钥保持装置保存的密钥信息来加密存储在内部存储装置中的数据,以将数据存储在外部存储装置中; 以及错误输出装置,用于当由加密处理装置执行的处理中发生错误时,将错误输出到防篡改集成电路的外部,外部存储装置存储通过加密存储在内部存储装置中的数据而获得的数据,使用 由密钥保存装置由密码处理装置保持的密钥信息,并且将另一条数据存储在存储内部存储数据中的数据的空闲区域中。 版权所有(C)2009,JPO&INPIT

    Encryption method, decryption method, secret key generation method, and program
    16.
    发明专利
    Encryption method, decryption method, secret key generation method, and program 审中-公开
    加密方法,分解方法,秘密密钥生成方法和程序

    公开(公告)号:JP2009044773A

    公开(公告)日:2009-02-26

    申请号:JP2008298842

    申请日:2008-11-21

    CPC classification number: G11B20/00086 H04L9/0891 H04L9/3268 H04L2209/603

    Abstract: PROBLEM TO BE SOLVED: To provide an encryption method capable of defending against an attack enacted by replacing a public key certificate revocation list, and transferring a digital work safely. SOLUTION: In an encryption apparatus that encrypts a digital work and outputs the encrypted digital work to a storage medium or a transmission medium, the encryption method repeats, among a first through an n-1th of n secret keys (n≥2), a sequence of encrypting the digital work using the first secret key, and encrypting an i-1th secret key using an i-th (2≤i≤n) secret key, and outputs the encrypted first through n-1th secret keys to the medium. The encrypting using at least one of the first through n-th secret keys includes a first step of modifying the secret key using an attribute value which depends on the contents of the public key revocation list that is a list of information for specifying revoked public key certificates, prior to the encryption. COPYRIGHT: (C)2009,JPO&INPIT

    Abstract translation: 要解决的问题:提供一种能够防止通过更换公钥证书撤销列表而制定的攻击并安全地传送数字作业的加密方法。 解决方案:在加密数字作业并将加密的数字作品输出到存储介质或传输介质的加密装置中,加密方法在n个秘密密钥(n≥2)中的第一到第n-1个中重复 ),使用第一秘密密钥对数字作品进行加密的序列,以及使用第i(2≤i≤n)个秘密密钥对第i-1个秘密密钥进行加密,并将加密的第一至第n第1秘密密钥输出到 介质。 使用第一至第n秘密密钥中的至少一个的加密包括:第一步骤,使用依赖于作为用于指定撤销的公钥的信息的列表的公钥撤销列表的内容的属性值来修改密钥 证书,加密之前。 版权所有(C)2009,JPO&INPIT

    Storage medium and content protection method
    17.
    发明专利
    Storage medium and content protection method 有权
    存储介质和内容保护方法

    公开(公告)号:JP2009015873A

    公开(公告)日:2009-01-22

    申请号:JP2008270330

    申请日:2008-10-20

    Abstract: PROBLEM TO BE SOLVED: To provide a storage medium, capable of protecting contents by preliminarily registering revocation information in a specific storage area of the storage medium to thereby invalidate, when the storage medium is installed to unauthorized electronic equipment shown by the revocation information and used, the electronic equipment.
    SOLUTION: A revocation list RL from which PD (recording and reproducing device) to be invalidated for content protection can be discriminated is preliminarily registered in a read-only disclosure ROM area 132 ensured on PM (storage medium) 13. When the PM 13 is installed to LCM (content use management system) or PD and used, a controller 130 provided on the PM 13 receives information showing the equipment from the LCM or PD, refers to the revocation list RL based on the information, and determines whether the equipment is invalidated or not according to the reference result.
    COPYRIGHT: (C)2009,JPO&INPIT

    Abstract translation: 要解决的问题:提供一种存储介质,其能够通过在存储介质的特定存储区域中预先登记撤销信息来保护内容,从而使存储介质安装到撤销所示的未经授权的电子设备时无效 信息和使用,电子设备。 解决方案:可以识别要从内容保护无效的PD(记录和再现装置)的撤销列表RL被预先登记在PM(存储介质)13上确保的只读公开ROM区域132中。当 PM 13被安装到LCM(内容使用管理系统)或PD并使用,PM 13上提供的控制器130从LCM或PD接收显示设备的信息,根据该信息参考撤销列表RL,并且确定是否 根据参考结果,设备无效。 版权所有(C)2009,JPO&INPIT

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