Abstract: A communication monitoring device is used in a network that includes a plurality of nodes. The communication monitoring device includes: a plurality of ports; and a processor. The processor is configured to execute a procedure including: detecting an abnormal frame from among received frames, a first arrival port at which the abnormal frame has arrived, and an order in which the abnormal frame arrived in received frames that have arrived at any of the plurality of ports, and transmitting order information that indicates the detected order to a node connected to the first arrival port.

Abstract: A communication control apparatus includes a receiver and a processor. The receiver receives, from a first node, data including first identification information or second identification information. The processor generates a first authentication code by using first data when the receiver has received the first data including the first identification information. The receiver receives, from the first node, second data including the second identification information and a second authentication code that the first node has generated by using the first data. The processor decides whether to make the second node abort a process of the data reported using the first identification information, on the basis of a result of a comparison between the first authentication code and the second authentication code.

Abstract: The base plate is transmissive to terahertz waves, and a sample is disposed at the base plate. In the conductive periodic structure, plural transmission portions that transmit terahertz waves are arrayed with a predetermined period. The conductive periodic structure is disposed apart from a position at which the sample is disposed. The waveguide includes a total reflection surface provided at a boundary face with the conductive periodic structure. The total reflection surface totally reflects incident terahertz waves, and the waveguide guides incident terahertz waves toward the total reflection surface. The magnitudes of one or more of a distance between the position at which the sample is disposed and the conductive periodic structure, a property of the base plate, and the predetermined period are set such that a dip showing a characteristic absorption is formed in a predetermined frequency region of a spectrum of terahertz waves.

Abstract: The base plate is transmissive to terahertz waves, and a sample is disposed at the base plate. In the conductive periodic structure, plural transmission portions that transmit terahertz waves are arrayed with a predetermined period. The conductive periodic structure is disposed apart from a position at which the sample is disposed. The waveguide includes a total reflection surface provided at a boundary face with the conductive periodic structure. The total reflection surface totally reflects incident terahertz waves, and the waveguide guides incident terahertz waves toward the total reflection surface. The magnitudes of one or more of a distance between the position at which the sample is disposed and the conductive periodic structure, a property of the base plate, and the predetermined period are set such that a dip showing a characteristic absorption is formed in a predetermined frequency region of a spectrum of terahertz waves.

Abstract: An advertisement management device generates and manages advertisement information and an advertisement identifier, a tag management unit generates a tag identifier and tag information unique to the tag identifier, and manages the tag identifier, the tag information, and the advertisement identifier generated by the advertisement management device in associated manner. The tag management unit sends the tag identifier and the advertisement identifier to the radio tag. A reader reads the tag identifier and the advertisement identifier from the radio tag, sends the tag identifier to the tag management unit, and sends the advertisement identifier to the advertisement management unit. The tag management unit sends tag information corresponding to the tag identifier received from the reading unit to a display unit, and the advertisement management unit sends advertisement information corresponding to the advertisement identifier received from the reading unit to the display unit.

Abstract: A storage medium on which is recorded a program for causing an information processing device. The program executes, an access right management information obtainment process for obtaining access right management information, a violation detection process for obtaining a policy from a policy storing unit for storing the policy set for the resource or the access to the resource, for checking whether or not the access right management information complies with the policy, and for detecting access right management information, a policy compliance level calculation process for calculating a risk score in accordance with a degree of risk of the violation, and for calculating a level of compliance with the policy.

Abstract: A management apparatus comprising memory to store owner information, dependence relationship information, and authorized user information are associated with file information identifying the secret file, an authorized user determination unit to determine whether a source user of the browse request is registered as the authorized user of the browse request file, a dependent file specifying unit to specify a dependent file having a dependence relationship with the browse request file by referring to the dependence relationship information when the source user is authorized; and a browse permission response transmitting unit to transmit the browse permission response to the source user based on whether or not the source user is registered as the authorized user of the dependent file by referring to the authorized user information.

Abstract: Encrypted music data and additional information necessary for accessing a server (30) are copied from a CD-ROM (200) onto a memory card (110). The memory card (110) receives via a digital portable phone network the distribution of a contents decoding key (Kc) necessary for decoding encrypted music data and control information data (AC1) for limiting the number of accesses to the memory card from the server (30).

Abstract: A storing unit stores a plurality of pieces of tag information to be stored in a single radio-frequency-identification tag. A responding unit transmits, in response to a request from a reader/writer, part of the stored tag information to the reader/writer.

Abstract: A memory card (110) stores access restriction information (AC1) to a license information hold unit (1440) arranged in a TRM area. Access restriction information (AC1) has information for example of a frequency of reproduction allowed and a number of licenses owned. A controller (1420) in reproducing and transferring content initially confirms access restriction information (AC1) and thereafter effects reproduction and transfer and after the reproduction and transfer are effected updates access restriction information (AC1), as required, for storage in a license information hold unit (1440).

Abstract: In an information reproducing apparatus having an open architecture, a secure module stores first information, and has a structure which does not allow access to the first information from outside, and a memory has a structure which can be accessed from outside. A decryption unit loaded in the memory decrypts an encryption applied to the first information by using a predetermined key. A key supply unit implemented in the secure module supplies the predetermined key to the decryption unit. An authentication unit implemented in the secure module supplies second information to the decryption unit, refers to third information returned in response to the second information, and checks for authenticity of the decryption unit. A key-supply stop unit implemented in the secure module stops supply of the predetermined key by the key supply unit when the authentication unit does not authenticate the decryption unit.

Abstract: A memory management unit manages a memory that stores a code, and sets that the memory that stores the code to be executed is valid to make a processor execute the code stores a verification key used to verify a validity of the code in a verification-key storing unit. When the code is stored in the memory and ready to be executed by the processor, the memory management unit verifies the validity of the code using the verification key stored in the verification-key storing unit and verification information assigned to the code. The memory management unit controls to set that the memory is valid when the validity is verified by the verifying unit, and not to set that the memory is valid when the validity is not verified by the verifying unit.

Abstract: A controller of a recording device issues a secure command to a storage device, and then waits the time estimated necessary for the storage device to execute the secure command before issuing the next secure command. When a controller of the storage device is executing the previous command, it notifies the recording device of being in process. When the previous command has been completed normally, the controller moves to the next process. Information for estimating the execution time of the command is obtained from the storage device in advance.

Abstract: A memory card 110 extracts a session key Ks from the data applied onto a data bus BS3 by carrying out a decryption process. An encryption processing unit 1406 encrypts a public encryption key KPcard(1) of memory card 110 based on session key Ks, and applies the encrypted key to a server via data bus BS3. A memory 1412 receives from a server data such as license key Kc, license ID data License-ID and user ID data User-ID encrypted with a public encryption key KPcard(1) differing for each memory card for storage, and receives encrypted content data [Dc]Kc encrypted with license key Kc from data bus BS3 for storage.

Abstract: A technology is provided to improve tamper resistance in encrypting data to be secured and inputting/outputting the data between a recording device and a host device. When the recording device issues an input/output command to a storage device to input/output data to be secured, the recording device attaches an ID to the command to identify to which cryptographic input/output processing the command belongs. Upon reception of a sequence command, the storage device receives the command if its ID has been allocated and the command is verified to have been issued in the correct sequence. The sequence ID is used to identify a process system while appropriately managing the steps of executing commands.

Abstract: A controller in a hard disk serving as a data storage device stores a license including a content key for decrypting encrypted content data E and others in a secure data storage portion. The license is managed in the secure data storage portion in accordance with a LBA, and the LBA for storing the license, which is being processed for transmission, is stored as a log in a log memory of the secure data storage portion. When a failure occurs during the transmission processing, the license, which was being processed for transmission, is specified based on the LBA stored in the log memory.

Abstract: A data storage device includes a secure data storage portion including a log memory. The log memory is formed of a plurality of banks, and stores history information in the plurality of banks in a ring-like fashion. The plurality of banks are designated by addresses (0?(N?1)), respectively. Each of the items of the history information respectively stored in the banks includes a management number region, a license ID (LID) region, a Ks2x region, an ST1 region, an ST2 region, a KPcmy region and a LBA region.

Abstract: A storage medium on which is recorded a program for causing an information processing device. The program executes, an access right management information obtainment process for obtaining access right management information, a violation detection process for obtaining a policy from a policy storing unit for storing the policy set for the resource or the access to the resource, for checking whether or not the access right management information complies with the policy, and for detecting access right management information, a policy compliance level calculation process for calculating a risk score in accordance with a degree of risk of the violation, and for calculating a level of compliance with the policy.

Abstract: A memory card (110) includes a memory (1415) to store encrypted content data, a license hold unit (1440) to store at least a portion of license information distributed by a distribution system, a plurality of authentication data hold units (1400.1, 1400.2), each storing a plurality of authentication data that are authenticated respectively by a plurality of public authentication keys KPma, KPmb common to the distribution system, and a switch (SW2) to selectively provide the data from the plurality of authentication data hold units outside of said recording apparatus according to a request external to the memory card (110).

Abstract: A management apparatus comprising memory to store owner information, dependence relationship information, and authorized user information are associated with file information identifying the secret file, an authorized user determination unit to determine whether a source user of the browse request is registered as the authorized user of the browse request file, a dependent file specifying unit to specify a dependent file having a dependence relationship with the browse request file by referring to the dependence relationship information when the source user is authorized; and a browse permission response transmitting unit to transmit the browse permission response to the source user based on whether or not the source user is registered as the authorized user of the dependent file by referring to the authorized user information.