Abstract: Provided is a secondary battery cell that can certainly prevent detachment of an integrated circuit from the secondary battery cell and attachment of the integrated circuit to another secondary battery cell, a battery pack including such secondary battery cells, and an electric power consumption device including such a battery pack. A secondary battery cell 20 of the present invention includes an integrated circuit (an IC chip) 50 that has stored identification information, and the integrated circuit 50 is driven by power from the secondary battery cell. A battery pack of the present invention includes secondary battery cells each including an integrated circuit (an IC chip) that has stored identification information, and the integrated circuits are driven by power from the secondary battery cells.

Abstract: There is realized a data conversion device that performs generation of a hash value with improved analysis resistance and a high degree of safety. There are provided a stirring processing section performing a data stirring process on input data; and a compression processing section performing a data compression process on input data including data segments which are divisions of message data, the message data being a target of a data conversion. Part of multi-stage compression subsections is configured to perform a data compression process based on both of output of the stirring processing section and the data segments in the message data. There is provided such a configuration that the stirring process is executed at least on fixed timing of a compression processing round of plural rounds and thus, there is realized a data conversion device that performs generation of a hash value with improved analysis resistance and a high degree of safety.

Abstract: A data conversion algorithm achieving efficient data diffusion is achieved. For example, in a configuration where a various processes are executed on two data segments which are resultants of dividing a rectangular matrix of data containing arranged one-byte data blocks into two parts to perform data conversion, efficient data scrambling with less operation cost is achieved by executing a linear conversion process on one of the data segments, an exclusive OR operation between the two data segments, a shift process on one of the data segments, and a swap process between the two data segments. Moreover, cryptographic processing with a high security level is achieved by including nonlinear conversion or key application operation on the data segments.

Abstract: A configuration that efficiently executes cryptographic processing to which a plurality of different F-functions are applied is provided. In a configuration that executes cryptographic processing by performing round operations to which different F-functions are selectively applied, a plurality of F-function correspondence tables, each corresponding to one of the F-functions, in which input values and output values or intermediate values are associated with each other are stored in a memory; in accordance with a prescribed cryptographic processing sequence, addresses corresponding to F-functions for the respective rounds are applied to read F-function correspondence tables from the memory; and output values or intermediate values for input values are acquired on the basis of reference to the tables to obtain data transformation results in accordance with the respective F-functions.

Abstract: There is realized a data conversion device that performs generation of a hash value with improved analysis resistance and a high degree of safety. There are provided a stirring processing section performing a data stirring process on input data; and a compression processing section performing a data compression process on input data including data segments which are divisions of message data, the message data being a target of a data conversion. Part of multi-stage compression subsections is configured to perform a data compression process based on both of output of the stirring processing section and the data segments in the message data. There is provided such a configuration that the stirring process is executed at least on fixed timing of a compression processing round of plural rounds and thus, there is realized a data conversion device that performs generation of a hash value with improved analysis resistance and a high degree of safety.

Abstract: A data conversion algorithm achieving efficient data diffusion is achieved. For example, in a configuration where a various processes are executed on two data segments which are resultants of dividing a rectangular matrix of data containing arranged one-byte data blocks into two parts to perform data conversion, efficient data scrambling with less operation cost is achieved by executing a linear conversion process on one of the data segments, an exclusive OR operation between the two data segments, a shift process on one of the data segments, and a swap process between the two data segments. Moreover, cryptographic processing with a high security level is achieved by including nonlinear conversion or key application operation on the data segments.

Abstract: A common-key blockcipher processing structure that makes analysis of key more difficult and enhances security and implementation efficiency is realized. In a key scheduling part in an encryption processing apparatus that performs common-key blockcipher processing, a secret key is input to an encryption function including a round function employed in an encryption processing part to generate an intermediate key, and the result of performing bijective transformation based on the intermediate key, the secret key, and the like and the result of performing an exclusive-OR operation on the bijective-transformed data are applied to round keys. With this structure, generation of round keys based on the intermediate key generated using the encryption function whose security has been ensured is performed, thereby making it possible to make analysis of the keys more difficult. The structure of the key scheduling part can be simplified, thereby making it possible to improve the implementation efficiency.

Abstract: There is provided an information processing apparatus including a similar tag list acquiring unit that acquires a similar tag list from which wireless tags having similar tracking information are extracted, a tracker extracting unit that extracts users permitted to access information of the wireless tags included in the similar tag list, a determining unit that determines whether a suspicious tag, which is a wireless tag included in the similar tag list that does not permit the user to access the information of the wireless tag, is included, with respect to each of the extracted users, and a notifying unit that transmits a notification to the user for whom it is determined that the suspicious tag is included in the similar tag list.

Abstract: Provided is a method where a power management apparatus (a) acquires, from a server managed by a manufacturer of an electronic appliance, a public key paired with a secret key that the electronic appliance and the server hold, (b) generates a ciphertext by generating a random number and encrypting the random number by the public key, and (c) transmits the ciphertext to the electronic appliance and the server, where the electronic appliance (d) restores the random number by decrypting the ciphertext transmitted in (c), (e) causes an electrical part to operate, based on the random number, and (f) transmits to the server the value of current flowing through the electrical part, and where the server (g) restores the random number by decrypting the ciphertext transmitted in (c), (h) calculates the value of current to flow through the electrical part based on the random number, and (i) compares values of current.

Abstract: An energy control device, an energy management device, an energy control method, and an energy management system are provided. The energy management system includes the energy management device and the energy control device. The energy management device includes an electric power management unit configured to generate an instruction specifying a supply destination for electric power generated by an electric power generator, and includes a communication unit configured to transmit the instruction to the energy control device. The energy control device includes a power conditioner configured to distribute the electric power to the supply destination based on the instruction, and includes a control unit configured to control an operation of the power conditioner.

Abstract: A power control device forms energy storage equipment together with a storage battery. The power control device includes: a communication portion that communicates with a power management device, which manages charge and discharge of the storage battery; a power conditioner that supplies electricity to a predetermined destination for supply; a control portion that controls operation of the power conditioner based on instructions from the power management device that are received by the communication portion; and an authentication processing portion that performs authentication processing with the power management device.

Abstract: There is provided a power management system including a power receiving unit for receiving power from outside according to consumption of power, an electrical storage unit for storing the power received by the power receiving unit, and a discharge control unit for controlling a second power amount discharged from the electrical storage unit so that a first power amount provided by the power receiving unit attains a predetermined time-series pattern.

Abstract: An encryption processing apparatus for performing common-key blockcipher processing, the encryption processing apparatus includes an encryption processing part that performs data transformation in which a round function is iterated for a plurality of rounds; and a key scheduling part that generates round keys used to execute the round function. The key scheduling part is configured to repeatedly apply an xs times multiplication over an extension field GF(2m), generated by an m-th order irreducible polynomial f(x) defined over GF(2), to an m-bit intermediate key generated by transformation of a secret key to generate a plurality of different round intermediate keys serving as data for generating a plurality of different round keys.

Abstract: Disclosed herein is an electrical-charging/discharging control apparatus composing an electric-power accumulation facility in conjunction with an electric-power accumulation battery and including: a communication section configured to receive a command to carry out either of electrical charging and discharging operations on the electric-power accumulation battery from an electric-power management apparatus for managing the electrical charging and discharging operations carried out on the electric-power accumulation battery; a control section configured to control the electrical charging and discharging operations carried out on the electric-power accumulation battery on the basis of the command; and a power conditioner for supplying electric power from an electric-power network to the electric-power accumulation battery and transferring electric power accumulated in the electric-power accumulation battery to the electric-power network in accordance with control carried out by the control section.

Abstract: In extended Feistel type common key block cipher processing, a configuration is realized in which an encryption function and a decryption function are commonly used. In a cryptographic processing configuration to which an extended Feistel structure in which the number of data lines d is set to an integer satisfying d?3 is applied, involution properties, that is, the application of a common function to encryption processing and decryption processing, can be achieved. With a configuration in which round keys are permuted or F-functions are permuted in the decryption processing, processing using a common function can be performed by setting swap functions for the encryption processing and the decryption processing to have the same processing style.

Abstract: A task management system includes a capacity information acquisition section which acquires, from a computation device which executes a computation using electrical power derived from renewable energy, capacity information which shows the computation capacity of the computation device which is predicted based on weather information of a region where the computation device is disposed, and a task management section which allocates a computation task to a plurality of the computation devices based on the capacity information which is acquired from the plurality of computation devices using the capacity information acquisition section.

Abstract: Provided is an authentication system capable of identifying a cause of a failure when authentication fails. A data structure of data to be authenticated has a header authentication data area (D2), and an authentication data area (D4) in addition to a header area (D1) and a data area (D3). The header authentication data area (D2) authenticates validity of the header area (D1), and the authentication data area (D4) authenticates the validity of the header authentication header area (D2) and the data area (D3). Since two kinds of authentication are carried out, the cause of the failure in authentication can be identified easily when authentication is failed.

Abstract: A service providing system includes a portable communication terminal operated by a user; a service providing apparatus providing a service to the user, and a server managing the service providing apparatus, wherein the service providing apparatus calculates a response using a challenge, and the portable communication terminal transmits a challenge generated by the server to the service providing apparatus subjected to a legitimacy check of the service providing apparatus and presents a result of the legitimacy check based on a response calculated by the service providing apparatus subjected to the legitimacy check using the transmitted challenge.

Abstract: In extended Feistel type common key block cipher processing, a configuration is realized in which an encryption function and a decryption function are commonly used. In a cryptographic processing configuration to which an extended Feistel structure in which the number of data lines d is set to an integer satisfying d?3 is applied, involution properties, that is, the application of a common function to encryption processing and decryption processing, can be achieved. With a configuration in which round keys are permuted or F-functions are permuted in the decryption processing, processing using a common function can be performed by setting swap functions for the encryption processing and the decryption processing to have the same processing style.

Abstract: A distributed processing system includes a plurality of operation devices that perform an operation using power derived from natural energy; and an operation control device that includes a task assigning unit that assigns the same operation task to the plurality of operation devices, and an operation control unit that controls the plurality of operation devices to perform the operation task assigned by the task assigning unit.