Abstract: A cryptographic management apparatus includes a storage unit which stores cryptographic key information containing a cryptographic key and cryptographic process condition information containing the cryptographic key information, a cryptographic process information input unit which receives an input of the object information and cryptographic key search request information, a cryptographic key information acquisition unit which acquires the cryptographic key information from the storage unit based on the search request information, a cryptographic module evaluation description information acquisition unit which acquires evaluation description information of the cryptographic module corresponding to the cryptographic key information, a cryptographic process ID creation unit which attaches an identifier of the cryptographic process condition information to the object information based on the cryptographic key information and the cryptographic module corresponding to the evaluation description information, and an

Abstract: A cryptographic module management apparatus searches for cryptographic module meta-information based on the category information of a requested cryptographic module and, if associated cryptographic module category information is contained in this cryptographic module meta-information, searches for the cryptographic module meta-information of an associated cryptographic module, to generate composite type cryptographic module evaluation information based on this cryptographic module meta-information, select a cryptographic module based on this composite type cryptographic module evaluation information, and read this cryptographic module from a cryptographic module storage portion and output such composite type cryptographic module evaluation information.

Abstract: In a cryptographic module distribution system, a cryptographic management server apparatus encrypts a cryptographic module using a key shared by a cryptographic apparatus, and transmits the encrypted cryptographic module to a client apparatus. The client apparatus transmits the encrypted cryptographic module to a cryptographic apparatus. The cryptographic apparatus decrypts the encrypted cryptographic module using the key shared by the cryptographic management server apparatus, and transmits the decrypted cryptographic module to the client apparatus. The client apparatus stores the received cryptographic module.

Abstract: A cryptographic module selecting device includes a cryptographic module evaluation information storage device configured to store identification information of a cryptographic module and cryptographic module evaluation information describing a function and/or performance of the cryptographic module in relation to each other, a condition information acquiring device configured to acquire condition information for specifying the condition of the cryptographic module to be selected, an extracting device configured to extract cryptographic module evaluation information conforming to the acquired condition information, from the stored cryptographic module evaluation information of the cryptographic module, and an output device configured to read out the identification information of the cryptographic module corresponding to the cryptographic module evaluation information selected by the extracting device from the cryptographic module evaluation information storage device and output the read identification informat

Abstract: A cryptographic module selecting device includes a cryptographic module evaluation information storage device configured to store identification information of a cryptographic module and cryptographic module evaluation information describing a function and/or performance of the cryptographic module in relation to each other, a condition information acquiring device configured to acquire condition information for specifying the condition of the cryptographic module to be selected, an extracting device configured to extract cryptographic module evaluation information conforming to the acquired condition information, from the stored cryptographic module evaluation information of the cryptographic module, and an output device configured to read out the identification information of the cryptographic module corresponding to the cryptographic module evaluation information selected by the extracting device from the cryptographic module evaluation information storage device and output the read identification informat

Abstract: A cryptographic management apparatus includes a storage unit which stores cryptographic key information containing a cryptographic key and cryptographic process condition information containing the cryptographic key information, a cryptographic process information input unit which receives an input of the object information and cryptographic key search request information, a cryptographic key information acquisition unit which acquires the cryptographic key information from the storage unit based on the search request information, a cryptographic module evaluation description information acquisition unit which acquires evaluation description information of the cryptographic module corresponding to the cryptographic key information, a cryptographic process ID creation unit which attaches an identifier of the cryptographic process condition information to the object information based on the cryptographic key information and the cryptographic module corresponding to the evaluation description information, and an

Abstract: In a cryptographic module distribution system, a cryptographic management server apparatus encrypts a cryptographic module using a key shared by a cryptographic apparatus, and transmits the encrypted cryptographic module to a client apparatus. The client apparatus transmits the encrypted cryptographic module to a cryptographic apparatus. The cryptographic apparatus decrypts the encrypted cryptographic module using the key shared by the cryptographic management server apparatus, and transmits the decrypted cryptographic module to the client apparatus. The client apparatus stores the received cryptographic module.

Abstract: A cryptographic module management apparatus searches for cryptographic module meta-information based on the category information of a requested cryptographic module and, if associated cryptographic module category information is contained in this cryptographic module meta-information, searches for the cryptographic module meta-information of an associated cryptographic module, to generate composite type cryptographic module evaluation information based on this cryptographic module meta-information, select a cryptographic module based on this composite type cryptographic module evaluation information, and read this cryptographic module from a cryptographic module storage portion and output such composite type cryptographic module evaluation information.

Abstract: An information recording method for recording content information in a recording medium having at least re-readable area, comprising converting, based on a first conversion rule ?1, first information including a first component for obtaining content control information, converting, based on a second conversion rule ?2, second information including a second component for obtaining the first information, and writing the converted first information and the converted second information into the re-recordable area of the recording medium.

Abstract: A signal processing method multiplexes/arranges digital data of a specific unit to form a predetermined unit, adds an error correction code to the predetermined unit to constitute an error correction coded block, replaces a part of the error correction coded block with specific data, and outputs the error correction coded block with the specific data being replaced to a transmission medium or a recording medium.

Abstract: A cryptographic communication terminal serving as one of information transmitting and receiving terminals in cryptographic communication includes a cryptographic algorithm storage section for storing one or more types of cryptographic algorithm used for cryptographic communication, and outputting a designated cryptographic algorithm, a key information storage section for storing a key used for cryptographic communication corresponding to the cryptographic algorithm, and outputting a designated key, a control section for designating, with respect to the cryptographic algorithm storage section and the key information storage section, which cryptographic algorithm and key are to be used in the cryptographic communication, and an encryption/decryption section for decrypting received encryption information by using the cryptographic algorithm designated with respect to the cryptographic algorithm storage section and the key designated with respect to the key information storage section, and encrypting information

Abstract: An encryption algorithm management system has a terminal unit and a center unit that have a common cipher-key to a ciphered encryption algorithm. The terminal unit includes a transmitter configured to transmit a demand to the center unit for obtaining an encrypted data needed for decrypting the ciphered encryption algorithm when the ciphered encryption algorithm is decrypted, and an encryption controller configured to renew the common cipher-key in case of receiving the encrypted data from the center unit in response to the demand, and to produce an encryption algorithm by decrypting the encrypted data with the renewed common cipher-key. The center unit includes a key controller configured to renew the common cipher-key so as to be identical with the renewed common cipher-key in case of receiving the demand from the transmitter and an encoder configured to produce the encrypted data by encrypting a cipher-key with the renewed common cipher-key and to transmit the encrypted data to the terminal unit.

Abstract: A signal processing method multiplexes/arranges digital data of a specific unit to form a predetermined unit, adds an error correction code to the predetermined unit to constitute an error correction coded block, replaces a part of the error correction coded block with specific data, and outputs the error correction coded block with the specific data being replaced to a transmission medium or a recording medium.

Abstract: A signal processing method multiplexes/arranges digital data of a specific unit to form a predetermined unit, adds an error correction code to the predetermined unit to constitute an error correction coded block, replaces a part of the error correction coded block with specific data, and outputs the error correction coded block with the specific data being replaced to a transmission medium or a recording medium.

Abstract: A signal processing method multiplexes/arranges digital data of a specific unit to form a predetermined unit, adds an error correction code to the predetermined unit to constitute an error correction coded block, replaces a part of the error correction coded block with specific data, and outputs the error correction coded block with the specific data being replaced to a transmission medium or a recording medium.

Abstract: An information recording method for recording content information in a recording medium having at least re-readable area, comprising converting, based on a first conversion rule &phgr;1, first information including a first component for obtaining content control information, converting, based on a second conversion rule &phgr;2, second information including a second component for obtaining the first information, and writing the converted first information and the converted second information into the re-recordable area of the recording medium.

Abstract: In a signal processing system in which a data block containing encrypted main data and error correction codes is formed of symbols of M rows×N columns (M×N), one row is divided into R frames, a synchronous signal is added to each frame, data of each frame is modulated by a modulator, and the data is recorded on a recording medium or transmitted on a transmission path, an encrypted key encrypting the main data is modulated by a modulator other than the modulator of the data block signal. Copying of a recording medium, on which information for which copyright protection is required is recorded, can be easily prevented.