Abstract: Spread of a forged storage medium is prevented suppressing an authentic storage medium's damage and trouble of a owner to the minimum. When there is an update request of user key data, the update history of the user key data concerning the shown above-mentioned medium identifier IDm is referred to. When judged that the update of the user key data concerning the shown medium identifier IDm not being performed within a predetermined period, the update of user key data is performed. The request of a update is refused when judged that the update of the user key data concerning the shown medium identifier IDm being performed within a predetermined period.

Abstract: A semiconductor memory device comprising a substrate, a memory electrically connected to the substrate, a first and a second transmission/reception units transmitting a signal supplied by the memory and receiving a signal to be supplied to the memory, both arranged on a surface of the substrate, a branch circuit which is electrically connected to the first and the second transmission/reception units, and electrically discriminates the second transmission/reception unit from the memory, and a conversion circuit which converts the signal between the branch circuit and the memory into a signal in a predetermined format.

Abstract: A key memory medium stores a medium identifier, a medium inherent key based on the medium identifier, an encrypted user key of a user key based on the medium inherent key, and an encrypted contents key of a contents key based on the user key. A contents memory medium stores an encrypted contents software of the contents software based on the contents key. A start-up software of the contents software is executed. The medium inherent key is generated using the medium identifier. The user key is derived from the encrypted user key using the medium inherent key. The contents key is derived from the encrypted contents key using the user key. The contents software is derived from the encrypted contents using the contents key.

Abstract: A memory system receives data from a host device which requests data write, supplies data to a host device which requests data read, and includes a nonvolatile semiconductor memory and a controller. The memory stores supplied data, and outputs data stored in a designated address. The controller supplies the memory with data in an encrypted form in accordance with a DRM technique employed by a host device which requests data write, and outputs data in an encrypted form in accordance with a DRM technique employed by a host device which requests data read.

Abstract: Rental business of content data is adequately performed while preventing a improper use of rights or the like by a user. Rental user key data Kuren1-3, and rental content key data Kuren1-3 includes management metadata M1-M3 and M1?-M3?, respectively. The management metadata includes data use termination date/time indicating an expiration date or the like.

Abstract: User keys make sensitive management of users which are different per type of services. A SD card SDq may store plural kinds of service user keys Kus which are different per type of services. The service user key Kus is encrypted by a medium unique key Kmu and is stored in a protection area 3. The protection area 3 stores a master user key Kumst encrypted by the medium unique key Kmu, as well as the service user keys Kus. The master user key Kumst is a key used for encrypting the service user key Kus when obtaining a service user key Kus.

Abstract: When settling a purchase price, a troublesome input is omitted and an input mistake or the like is prevented. The content data delivery server 42 makes the QR code generation unit 49 generate a QR code including encoded URL data of the settlement unit 70, a medium identifier data IDm and so forth. The QR code is displayed on a display 26. After imaging the displayed QR code by a CCD camera 58, the QR code is analyzed and a data is read therefrom. It is transmitted to a settlement server 71 and a settlement request is performed.

Abstract: Data in a storage medium not using an encryption double key scheme is transferred to a storage medium using an encryption double key scheme. A title key Kt encrypting content data C in an SD audio card SDa is further encrypted by a user key Kua generated in a key generating unit 23e, and is stored in a user data area 4 in an SD card SDq. The generated user key Kua is encrypted by a medium unique key Kmuq in the SD card SDq, and is stored in a protection area 3.

Abstract: There is provided a content data reproducing system that allows, in a user terminal adapted to be able to read a recording medium storing a content data encrypted with a predetermined encrypted key data, the content data to be reproduced after a CM data is reproduced. The system includes a CM data transmission portion that transmits the CM data to the user terminal in response to a request from the user terminal. When the sensing portion senses that the reproducing of the CM data has been completed in the user terminal, a permission portion permits the user terminal to use the encrypted key data to decrypt and reproducing the content data.

Abstract: A method of delivering content data is provided that makes content data able to be reproduced at a user terminal by delivering content key data necessary to decrypt the content data. Specifically, portable storage media storing in advance the content data encrypted with the content key data is connected to the user terminal having a unique terminal ID. User key data that is provided with a predetermined expiration date and is necessary to encrypt the content key data is transmitted from a server to the user terminal. The user key data is stored in an internal memory in the user terminal in such a way that the user key data is unable to be read out of the internal memory. The content key data necessary to decrypt the content data stored in the portable storage media is encrypted with the user key data, and the encrypted content key data is stored in the user terminal or the portable storage media.

Abstract: A user terminal converts stored contents of an SD card to contain second encrypted content key data equivalent to an encrypted title key of SD Audio, and encrypted content equivalent to encrypted content of the SD Audio. Accordingly, compatibility can be realized between an encryption dual key system as a first encryption system and an encryption (single) key system as a second encryption system.

Abstract: The data delivery system is adapted to be able to communicate via a network with a data communication terminal adapted to be able to access first portable storage media that stores content data to be able to be ripped to digital recording equipment and second portable storage media adapted to be able to store content key data with which the digital recording equipment encrypts and stores the content data. The system generates different content key data for each set of content data and stores the content key data in a content key database.

Abstract: There is provided a content data delivery system including a playback equipment that is adapted to be able to decrypt a content data encrypted with a content key data and to play back the decrypted content data and that holds an equipment ID to identify itself; a handheld device that is adapted to be able to communicate data with the playback equipment and holds a handheld device ID to identify itself; and a server that delivers the content key data to the playback equipment via the handheld device. The server generates a first random number and transmits the first random number to the playback equipment via the handheld device. The playback equipment generates a second random number. The handheld device transmits to the server the equipment ID, handheld device ID, and second random number to provide a request for delivery of the content key data. The server and playback equipment use the first random number and second random number as a basis to generate a session key.

Abstract: A handheld device is configured to be connectable to a storage media that holds a unique media identifier and holds a content key data used to decrypt an encrypted content data. A content data delivery system is provided that is configured to be able to deliver various data to the handheld device and to make a content data available to the handheld device. The system includes a member-registration information database that holds member-registration information including a data pair of a handheld-device identifier related to the relevant handheld device and the relevant media identifier. The media identifier held by the storage media is verified with the member-registration information database.

Abstract: One aspect of the present invention is to provide a login system and method which can be easily applied to corporate members, and which can prevent unauthorized use even if authentication information is copied. Because of a configuration in which login is carried out by using service right data for each medium identifier of a secure storage medium, unless a dishonest person uses the secure storage medium, it is impossible to log in even if the dishonest person copies authentication information. Further, provided that the secure storage medium is distributed to every signal person belonging to a corporate body, it can be applied to corporate users in the same way as individual users.

Abstract: A solid state image sensor controlled by a command signal. An area sensor has pixels arranged two-dimensionally. An interface is configured to receive the command signal. A selector is configured to select one of a plurality of readout schemes of reading out a pixel signal from the area sensor in accordance with the received command signal. A scanner is configured to scan the area sensor in accordance with the selected scheme selected, to read out the pixel signal from the area sensor. Processors subject the pixel signal to signal processing and output a digital video signal having a predetermined signal format. A motion vector detector is configured to detect a motion vector of an image based on the digital video signal and to output motion vector data to the interface. The area sensor, selector, scanner, processors, motion vector detector, and interface are mounted on a single chip.

Abstract: A personal computer PC transmits to a server encoded user information and encoded license information, etc. contained in a secure recording medium. The server decodes the encoded license information to obtain license information. Then, the server deletes the encoded license information contained in the secure recording medium via the personal computer PC. The server decodes the decoded user information contained in a secure recording medium to obtain user information. Then, the server encodes the license information based on the user information to write the obtained encoded license information into the secure recording medium via the personal computer PC. In this manner, license information can be moved between two secure media and convenience can be improved.

Abstract: A content distribution method distributes a package containing a content from a content distribution apparatus to a terminal of a content distribution destination and causes the terminal to expand and display the content contained in the distributed package by using expansion software provided in the terminal. Update data of the expansion software is inserted in the package in addition to the content. When the terminal cannot expand the content by using the expansion software provided in it, the terminal updates the expansion software provided in it by using the update data contained in the distributed package and expands the content by using the updated expansion software.

Abstract: The present invention relates to an encoding and recording apparatus, a playback apparatus, and a program which solve the possibility of a capacity shortage of a protected area accompanying an increase in an information amount and the number of content keys. It is configured such that an encoded user identifier is recorded in a protected area of a key storage medium. The encoded user identifier is fixed information, and has the characteristic in which a data amount is not increased in connection with a utilization form. Therefore, a capacity shortage of the protected area is not brought about.

Abstract: A present invention is related to a management apparatus for a content distribution system, a browsing apparatus, a program and a method for further facilitating a distribution of content. A management apparatus comprises a function of managing a content ID indicating encrypted content information, a content ID indicating a user and a group of a distributor ID indicating a distribution agent or a distribution user of the content information and a function of transmit ting key information when receiving a transmission request including key price information equivalent to key price or key price paid information and each ID. Therefore, since a distribution route is specified only by the distributor ID different from conventional distribution information, the distribution system can be simplified.