Abstract: A reception device includes: a receiver unit which receives a program that is encrypted, handles confidential information and includes identification information for identifying a target of use of the program, and a notification signal for notifying of delivery of the program and including delivery destination information for identifying a delivery destination of the program; a processor which determines whether the reception device is a delivery target of the program on the basis of the delivery destination information included in the notification signal, and prepares for receiving the program when the reception device is the delivery target of the program; and an information protection unit which determines whether the reception device is the target of use of the program with reference to the identification information included in the program, and decrypts the program when the reception device is the target of use of the program.

Abstract: A security apparatus includes: a memory provided in a secure region and configured to store a plurality of programs which preforms respective security processes with an external apparatus in accordance with respective security methods, and security information which is used for the security processes; and a processor configured to: execute a first program among the plurality of programs; perform a first security process with a first external apparatus; acquire first secret information from the first external apparatus; execute a second program different from the first program among the plurality of programs; perform a second security process with a second external apparatus; and convert the first secret information into second secret information to be transmitted to the second external apparatus.

Abstract: An information processing device includes a first processor, an information protection circuit, and a first communication path which connects between the information protection circuit and the first processor. The information protection circuit includes an interface circuit which connects the information protection circuit to the first communication path, a second processor, and a first memory which is inaccessible from the first processor but accessible from the second processor. When a command received from the first communication path is a command destined for the information protection circuit, the interface circuit passes the command to the second processor and the second processor executes a process related to information stored in the first memory in accordance with the command, but when the command received from the first communication path is not a command destined for the information protection circuit, the interface circuit does not pass the command to the second processor.

Abstract: A secure area includes a processor that is included in a secure area and a first memory with storage capacity less than a predetermined amount. The processor decrypts, when encrypted first information and encrypted second information are input from a secret input path, the first information and the second information and stores the first information in the first memory. The processor encrypts, by using an encryption key obtained based on the decrypted first information, the decrypted second information and makes a request to store the encrypted second information in a second memory that is present outside the secure area.

Abstract: A security system includes: a first device that includes a first processor and a first target processor; and a second device that includes a second processor and a second target processor. The first processor executes a first process including: first protecting a first program as a monitoring target among programs operating on the first target processor; first decrypting encrypted data obtained by encrypting output data from the first program; and first encrypting the decrypted output data and causing the encrypted data of the output data to be transmitted to the second device. The second processor executes a second process including: second protecting a second program as a monitoring target among programs operating on the second target processor; second decrypting the transmitted encrypted data of the output data; and second encrypting the decrypted output data and outputting the encrypted data of the output data to the second program.

Abstract: A reception device includes: a receiver unit which receives a program that is encrypted, handles confidential information and includes identification information for identifying a target of use of the program, and a notification signal for notifying of delivery of the program and including delivery destination information for identifying a delivery destination of the program; a processor which determines whether the reception device is a delivery target of the program on the basis of the delivery destination information included in the notification signal, and prepares for receiving the program when the reception device is the delivery target of the program; and an information protection unit which determines whether the reception device is the target of use of the program with reference to the identification information included in the program, and decrypts the program when the reception device is the target of use of the program.

Abstract: An information processing device includes a first processor, an information protection circuit, and a first communication path which connects between the information protection circuit and the first processor. The information protection circuit includes an interface circuit which connects the information protection circuit to the first communication path, a second processor, and a first memory which is inaccessible from the first processor but accessible from the second processor. When a command received from the first communication path is a command destined for the information protection circuit, the interface circuit passes the command to the second processor and the second processor executes a process related to information stored in the first memory in accordance with the command, but when the command received from the first communication path is not a command destined for the information protection circuit, the interface circuit does not pass the command to the second processor.

Abstract: A secure module includes a generating unit that executes generation processing of generating a scanning program that causes scan processing, which generates unique code for a program under test, to be executed at a connected device and further executes update processing of randomly updating contents of the scanning program; a storage device storing therein the unique code for the program under test; and an authenticating unit that if the scanning program is executed by the connected device and executed with respect to the program under test stored at a designated storage area in the connected device, authenticates validity of the program under test stored at the designated storage area, based on the unique code stored in the storage device and execution results of the scanning program executed at the connected device.

Abstract: A communication apparatus includes: a secure module; a first storage device, provided outside the secure module, to store a program for encrypted communication with an apparatus external to the communication apparatus using a cryptographic key stored in the secure module; a detecting unit, provided in the secure module, to detect tampering of the program; and a setting unit, provided in the secure module, to disable the encrypted communication when the tampering of the program is detected.

Abstract: An information processing apparatus includes a secure module and a first control circuit provided external to the secure module and configured to input encrypted data to the secure module through a first communication channel. The secure module includes memory, a second control circuit, and an input unit. The memory is configured not to allow the first control circuit to read and write data therefrom and thereto and to store a key for decrypting the encrypted data. The second control circuit is configured to decrypt the encrypted data using the key and output the decrypted data to the first control circuit through the first communication channel. The input unit is configured to store, in the memory, the key input through a second communication channel provided separately from the first communication channel.

Abstract: An information processing apparatus securely stores a program group comprising one or more programs and includes a first detector that detects an execution waiting state of a given program among the program group; a secure module that is configured such that information stored therein cannot be referred to by an external device, and when the execution waiting state is detected by the first detector, that encrypts the given program and writes the encrypted given program to a storage area that is different from that of the program group; a second detector that detects an execution request concerning the given program; a decrypter that decrypts the given program encrypted by the secure module and writes the decrypted given program to the storage area, when the execution request concerning the given program is detected by the second detector; and a program executor that executes the given program decrypted by the decrypter.

Abstract: A data transmitting device transmits section information, a data broadcasting content, and a broadcasting content in a multiplexed manner. The data transmitting device includes a specified-information embedding unit that embeds information related to a specified image into the section information; a multiplexing unit that multiplexes the section information embedded with the specified information by the specified-information embedding unit, the data broadcasting content, and the broadcasting content; and a transmitting unit that transmits data multiplexed by the multiplexing unit to a data receiving device.

Abstract: A digital broadcast method includes receiving audio and video data that form a predetermined content for digital broadcasting; receiving related data indicating a content related to the predetermined content; performing a control that transmits the received related data to a data receiving device prior to transmitting the received audio data and video data; receiving the audio and video data that form the predetermined content and the related data of the predetermined content that have been subject to the control; changing a viewing channel in response to a changing instruction of the viewing channel from a viewer; and outputting, when the viewing channel is changed from a first channel number to a second channel number at the changing and then changed to the first channel number again, the received related data with audio and video data corresponding to the first channel number to an output unit.

Abstract: An information processing apparatus capable of effectively preventing unauthorized use of content distributed through a network when playing the content. The information processing apparatus includes a tamper-resistant secure module, a receiving block, and a playback block. The secure module includes a key storage block for storing a decryption key, a decryption block, and an encryption block. The receiving block receives distribution data distributed through the network and transfers the data to the decryption block. The decryption block decrypts the distribution data to obtain content by using the decryption key. The encryption block divides the content to a plurality of split pieces of content and encrypts them by using a temporary encryption key. Information on a temporary decryption key is output each time the temporary encryption key is changed. The playback block decrypts the encrypted pieces of content by using the temporary decryption key and combines and plays them.

Abstract: An information processing apparatus securely stores a program group comprising one or more programs and includes a first detector that detects an execution waiting state of a given program among the program group; a secure module that is configured such that information stored therein cannot be referred to by an external device, and when the execution waiting state is detected by the first detector, that encrypts the given program and writes the encrypted given program to a storage area that is different from that of the program group; a second detector that detects an execution request concerning the given program; a decrypter that decrypts the given program encrypted by the secure module and writes the decrypted given program to the storage area, when the execution request concerning the given program is detected by the second detector; and a program executor that executes the given program decrypted by the decrypter.

Abstract: A communication apparatus includes: a secure module; a first storage device, provided outside the secure module, to store a program for encrypted communication with an apparatus external to the communication apparatus using a cryptographic key stored in the secure module; a detecting unit, provided in the secure module, to detect tampering of the program; and a setting unit, provided in the secure module, to disable the encrypted communication when the tampering of the program is detected.

Abstract: A secure module includes a generating unit that executes generation processing of generating a scanning program that causes scan processing, which generates unique code for a program under test, to be executed at a connected device and further executes update processing of randomly updating contents of the scanning program; a storage device storing therein the unique code for the program under test; and an authenticating unit that if the scanning program is executed by the connected device and executed with respect to the program under test stored at a designated storage area in the connected device, authenticates validity of the program under test stored at the designated storage area, based on the unique code stored in the storage device and execution results of the scanning program executed at the connected device.

Abstract: An information reproducing apparatus of the present invention includes a secure module and a main memory. The information in the secure module can not be accessed from outside. The secure module reads, using a direct access method, information relating to software stored in the main memory. The secure module checks a falsification of the software by comparing the information read with the information stored in advance in the secure module.

Abstract: An information reproducing apparatus of the present invention includes a secure module and a main memory. The information in the secure module can not be accessed from outside. The secure module reads, using a direct access method, information relating to software stored in the main memory. The secure module checks a falsification of the software by comparing the information read with the information stored in advance in the secure module.

Abstract: A digital broadcast method includes receiving audio and video data that form a predetermined content for digital broadcasting; receiving related data indicating a content related to the predetermined content; performing a control that transmits the received related data to a data receiving device prior to transmitting the received audio data and video data; receiving the audio and video data that form the predetermined content and the related data of the predetermined content that have been subject to the control; changing a viewing channel in response to a changing instruction of the viewing channel from a viewer; and outputting, when the viewing channel is changed from a first channel number to a second channel number at the changing and then changed to the first channel number again, the received related data with audio and video data corresponding to the first channel number to an output unit.