Patent application number | Description | Published |
20100135436 | SIGNAL PROCESSING SYSTEM AND INFORMATION STORAGE MEDIUM - According to one embodiment, a first encoder encodes main information, a second encoder encodes sub-information, a first modulator modulates a carrier based on an output of the first encoder, a duplicating module duplicates an output of the second encoder to generate encoded sub-information units, and a second modulator amplitude-modulates an output of the first modulator based on the encoded sub-information units. The second modulator amplitude-modulates with σ/(μ×(2 | 06-03-2010 |
20110091032 | METHOD AND APPARATUS FOR INFORMATION REPRODUCTION - According to one embodiment, a content recording apparatus including, a key preparing section configured to prepare a key to encrypt an acquired stream, a file preparing section configured to add identification information to the acquired stream to prepare a file, a hash calculating section configured to calculate a hash value concerning the identification information added to the stream by the file preparing section, a key file preparing section configured to integrate the hash value calculated by the hash calculating section and the key prepared by the key preparing section to prepare a key file, and a writing section configured to write the key file prepared by the key file preparing section in the protected area of a recording medium. | 04-21-2011 |
20130054961 | AUTHENTICATOR, AUTHENTICATEE AND AUTHENTICATION METHOD - According to one embodiment, an authenticator which authenticates an authenticatee, which stores first key information (NKey) that is hidden, includes a memory configured to store second key information (HKey) which is hidden, a random number generation module configured to generate random number information, and a data generation module configured to generate a session key (SKey) by using the second key information (HKey) and the random number information. The authenticator is configured such that the second key information (HKey) is generated from the first key information (NKey) but the first key information (NKey) is not generated from the second key information (HKey). | 02-28-2013 |
20130124854 | AUTHENTICATOR - According to one embodiment, a method for authenticating a device, wherein the device holds secret identification information, encrypted secret identification information, and key management information, and an authenticator holds an identification key, the method includes reading, by the authenticator, the encrypted secret identification information and the key management information from the device, and obtaining, by the authenticator, a family key by using the key management information, the family key being capable of being decrypted with the identification key. The method further includes obtaining, by the authenticator, the secret identification information by decrypting the encrypted secret identification information with the family key. | 05-16-2013 |
20130142324 | DEVICE AND AUTHENTICATION METHOD THEREFOR - According to one embodiment, an authentication method includes generating, by the memory, first authentication information by calculating secret identification information with a memory session key in one-way function operation, transmitting encrypted secret identification information, a family key block, and the first authentication information to a host, and generating, by the host, second authentication information by calculating the secret identification information generated by decrypting the encrypted secret identification information with the host session key in one-way function operation. The method further includes comparing, by the host, the first authentication information with the second authentication information. | 06-06-2013 |
20130142325 | MEMORY - According to one embodiment, a memory includes a first storage region capable of storing first key (NKey) information, and secret identification information (SecretID) unique to the authenticate, reading and writing data from and to the first storage region from an outside of the authenticatee being inhibited at least after the authenticatee is shipped. | 06-06-2013 |
20130142333 | SEMICONDUCTOR STORAGE DEVICE - According to one embodiment, a device includes a storage and an authenticator. The storage includes a first area, a second area and a third area. The first area stores NKey and SecretID, the second area stores index information. E-SecretID is generated by SecretID. The third area stores FKB including information generated by FKey. The authenticator authenticates the external device. HKey is generated by an AES encryption calculating using NKey and HC. A SKey is generated by an AES encryption process using HKey and RN. A one-way conversion calculating is performed. E-SecretID, FKB and Oneway-ID are output to the external device. The index information is read from the second area. | 06-06-2013 |
20130145162 | DEVICE AND AUTHENTICATION METHOD THEREFOR - According to one embodiment, a device includes first and second data generator, a one-way function processor, and a data output interface. The first data generator generates a second key by encrypting a host constant with a first key in AES operation. The second data generator generates a session key by encrypting a random number with a second key in AES operation. The one-way function processor generates authentication information by processing secret identification information with the session key in one-way function operation. The data output interface outputs the encrypted secret identification information, a family key block, and the authentication information to outside of the device. | 06-06-2013 |
20130145164 | SEMICONDUCTOR MEMORY DEVICE - According to one embodiment, a device includes a first memory area to store a first key. A second memory area stores encrypted secret identification (ID) information generated from secret ID information with a family key. A third memory area stores a family key block including data generated from the family key with an ID key. An authentication module performs authentication. A second key is generated from a first number with the first key, a session key is generated from a random number with the second key, and authentication information is generated from the secret ID information with the session key. The encrypted secret ID information, family key block and the authentication information is output. | 06-06-2013 |
20130163755 | PROTECTION METHOD, DECRYPTION METHOD, PLAYER, STORAGE MEDIUM, AND ENCRYPTION APPARATUS OF DIGITAL CONTENT - A digital content protection method includes distributing, together with an encrypted content, an encrypted protected program key, a protected content key, and a protected code including an individual instruction code, at least some elements of which are designed according to a unique operation code specification for each content player or for each content player group. | 06-27-2013 |
20130185562 | HOST DEVICE, SEMICONDUCTOR MEMORY DEVICE, AND AUTHENTICATION METHOD - According to one embodiment, encrypted secret identification information (E-SecretID) and the key management information (FKB) are read from a memory device. Encrypted management key (E-FKey) is obtained using the key management information (FKB) and index information (k). The index information (k) and the encrypted management key (E-FKey) are transmitted to the semiconductor memory device. An index key (INK) is generated using the first key information (NKey) and the received index information (k). The encrypted management key (E-FKey) is decrypted using the index key (INK) to obtain management key (FKey), which is transmitted to the host device. | 07-18-2013 |
20140032910 | STORAGE SYSTEM IN WHICH FICTITIOUS INFORMATION IS PREVENTED - According to one embodiment, a storage system includes a host device, a secure storing medium, and a non-secure storing medium. The secure storing medium includes a memory provided with a protected first storing region which stores secret information sent from the host device, and a second storing region which stores encoded contents, and a controller which carries out authentication processing for accessing the first storing region. The host device and the secure storing medium produce a bus key which is shared only by the host device and the secure storing medium by authentication processing, and which is used for encoding processing when information of the first storing region is sent and received between the host device and the secure storing medium. The host device has the capability to request the secure storing medium to send a status. | 01-30-2014 |
20140032934 | STORAGE SYSTEM IN WHICH FICTITIOUS INFORMATION IS PREVENTED - According to one embodiment, a storage system includes a host device and a secure storage. The host device and the secure storage produce a bus key which is shared only by the host device and the secure storage by authentication processing, and which is used for encoding processing. The host device produces a message authentication code including a message which can be stored in the secure storage based on the bus key, and sends the produced message authentication code to the secure storage. The secure storage stores the message included in the message authentication code in accordance with instructions of the host device. The host device verifies whether the message stored in the secure storage is intended contents. | 01-30-2014 |
20140047239 | AUTHENTICATOR, AUTHENTICATEE AND AUTHENTICATION METHOD - According to one embodiment, an authenticatee includes a memory configured to store a plurality of pieces of secret information XY and a plurality of pieces of secret information XY | 02-13-2014 |
20140047240 | DATA RECORDING DEVICE, AND METHOD OF PROCESSING DATA RECORDING DEVICE - A controller is provided with a controller key and a first controller identification information unique to the controller. The controller generates a controller unique key unique to a respective controller based on the controller key and the first controller identification information, and a second controller identification information based on the first controller identification information. A decryptor decrypts the encrypted medium device key using the controller unique key to obtain a medium device key. An authentication/key exchange process unit performs authentication/key exchange process with the host device through an interface unit using the medium device key, the medium device key certificate and the second controller identification information to establish a secure channel. | 02-13-2014 |
20140047241 | DATA RECORDING DEVICE, HOST DEVICE AND METHOD OF PROCESSING DATA RECORDING DEVICE - A data storage unit can store an encrypted medium device key Enc (Kcu, Kmd_i), and a medium device key certificate (Certmedia). A controller can include an information recording unit to store a controller key (Kc) and first controller identification information (IDcu). A key generation unit executes a one-way function calculation based on the controller key and the first controller identification information to generate a controller unique key (Kcu). An identification information generating unit executes a one-way function calculation based on the controller key and the first controller identification information to generate second controller identification information (IDcntr). A key encryption unit encrypts the medium device key (Kmd_i) by the controller unique key (Kcu) to generate encrypted medium device key Enc (Kcu, Kmd_i). A key exchange unit executes an authentication key exchange process with a host device using the medium device key (Kmd_i) and the medium device key certificate (Certmedia). | 02-13-2014 |
20140052988 | AUTHENTICATOR, AUTHENTICATEE AND AUTHENTICATION METHOD - According to one embodiment, an authenticatee includes, a memory configured to store secret information XYmain, XYsub, and secret information XYmain | 02-20-2014 |
20140075190 | AUTHENTICATOR, AUTHENTICATEE AND AUTHENTICATION METHOD - According to one embodiment, an authenticatee includes, a memory configured to store secret information XY, secret information XY which is created by multiply duplicating, at least twice, the secret information XY, and secret information XY | 03-13-2014 |
20140086411 | SEMICONDUCTOR STORAGE DEVICE - According to one embodiment, a device includes a storage and an authenticator. The storage includes a first area, a second area and a third area. The first area stores NKey and SecretID, the second area stores index information. E-SecretID is generated by SecretID. The third area stores FKB including information generated by FKey. The authenticator authenticates the external device. HKey is generated by an AES encryption calculating using NKey and HC. A SKey is generated by an AES encryption process using HKey and RN. A one-way conversion calculating is performed. E-SecretID, FKB and Oneway-ID are output to the external device. The index information is read from the second area. | 03-27-2014 |
20140089675 | AUTHENTICATOR, AUTHENTICATEE AND AUTHENTICATION METHOD - According to one embodiment, an authenticator which authenticates an authenticatee, which stores first key information (NKey) that is hidden, includes a memory configured to store second key information (HKey) which is hidden, a random number generation module configured to generate random number information, and a data generation module configured to generate a session key (SKey) by using the second key information (HKey) and the random number information. The authenticator is configured such that the second key information (HKey) is generated from the first key information (NKey) but the first key information (NKey) is not generated from the second key information (HKey). | 03-27-2014 |
20140108808 | HOST DEVICE, SEMICONDUCTOR MEMORY DEVICE, AND AUTHENTICATION METHOD - According to one embodiment, encrypted secret identification information (E-SecretID) and the key management information (FKB) are read from a memory device. Encrypted management key (E-FKey) is obtained using the key management information (FKB) and index information (k). The index information (k) and the encrypted management key (E-FKey) are transmitted to the semiconductor memory device. An index key (INK) is generated using the first key information (NKey) and the received index information (k). The encrypted management key (E-FKey) is decrypted using the index key (INK) to obtain management key (FKey), which is transmitted to the host device. | 04-17-2014 |
20140122868 | AUTHENTICATOR - According to one embodiment, a method for authenticating a device, wherein the device holds secret identification information, encrypted secret identification information, and key management information, and an authenticator holds an identification key, the method includes reading, by the authenticator, the encrypted secret identification information and the key management information from the device, and obtaining, by the authenticator, a family key by using the key management information, the family key being capable of being decrypted with the identification key. The method further includes obtaining, by the authenticator, the secret identification information by decrypting the encrypted secret identification information with the family key. | 05-01-2014 |
20140223173 | INFORMATION RECORDING DEVICE - A controller is provided with a controller key and a first controller identification information unique to the controller. The controller generates a controller unique key unique to a respective controller based on the controller key and the first controller identification information, and a second controller identification information based on the first controller identification information. A decryptor decrypts the encrypted medium device key using the controller unique key to obtain a medium device key. An authentication/key exchange process unit performs authentication/key exchange process with the host device through an interface unit using the medium device key and the medium device key certificate to establish the secure channel. | 08-07-2014 |
20140237244 | DEVICE AND AUTHENTICATION METHOD THEREFOR - According to one embodiment, an authentication method includes generating, by the memory, first authentication information by calculating secret identification information with a memory session key in one-way function operation, transmitting encrypted secret identification information, a family key block, and the first authentication information to a host, and generating, by the host, second authentication information by calculating the secret identification information generated by decrypting the encrypted secret identification information with the host session key in one-way function operation. The method further includes comparing, by the host, the first authentication information with the second authentication information. | 08-21-2014 |
20140237245 | DEVICE AND AUTHENTICATION METHOD THEREFOR - According to one embodiment, an authentication method includes generating, by the memory, first authentication information by calculating secret identification information with a memory session key in one-way function operation, transmitting encrypted secret identification information, a family key block, and the first authentication information to a host, and generating, by the host, second authentication information by calculating the secret identification information generated by decrypting the encrypted secret identification information with the host session key in one-way function operation. The method further includes comparing, by the host, the first authentication information with the second authentication information. | 08-21-2014 |
20140237249 | DEVICE AND AUTHENTICATION METHOD THEREFOR - According to one embodiment, an authentication method includes generating, by the memory, first authentication information by calculating secret identification information with a memory session key in one-way function operation, transmitting encrypted secret identification information, a family key block, and the first authentication information to a host, and generating, by the host, second authentication information by calculating the secret identification information generated by decrypting the encrypted secret identification information with the host session key in one-way function operation. The method further includes comparing, by the host, the first authentication information with the second authentication information. | 08-21-2014 |
20140237258 | DEVICE AND AUTHENTICATION METHOD THEREFOR - According to one embodiment, an authentication method includes generating, by the memory, first authentication information by calculating secret identification information with a memory session key in one-way function operation, transmitting encrypted secret identification information, a family key block, and the first authentication information to a host, and generating, by the host, second authentication information by calculating the secret identification information generated by decrypting the encrypted secret identification information with the host session key in one-way function operation. The method further includes comparing, by the host, the first authentication information with the second authentication information. | 08-21-2014 |
20140237263 | NONVOLATILE SEMICONDUCTOR MEMORY DEVICE AND MEMORY SYSTEM USING THE SAME - According to one embodiment, a nonvolatile semiconductor memory device includes a memory cell array and an encryption arithmetic module. The memory cell array includes a first storage area and a second storage area. The first storage area is inhibited from being written into and read from and stores secret key data. The second storage area is inhibited from being written into and permitted to be read from and stores encrypted key data and an expected value. The encryption arithmetic module carries out an authentication operation based on the secret key data and message data. The expected value is the result of carrying out the authentication operation. | 08-21-2014 |
20140241527 | DEVICE AND AUTHENTICATION METHOD THEREFOR - According to one embodiment, an authentication method includes generating, by the memory, first authentication information by calculating secret identification information with a memory session key in one-way function operation, transmitting encrypted secret identification information, a family key block, and the first authentication information to a host, and generating, by the host, second authentication information by calculating the secret identification information generated by decrypting the encrypted secret identification information with the host session key in one-way function operation. The method further includes comparing, by the host, the first authentication information with the second authentication information. | 08-28-2014 |
20140245010 | DEVICE AND AUTHENTICATION METHOD THEREFOR - According to one embodiment, an authentication method includes generating, by the memory, first authentication information by calculating secret identification information with a memory session key in one-way function operation, transmitting encrypted secret identification information, a family key block, and the first authentication information to a host, and generating, by the host, second authentication information by calculating the secret identification information generated by decrypting the encrypted secret identification information with the host session key in one-way function operation. The method further includes comparing, by the host, the first authentication information with the second authentication information. | 08-28-2014 |
20140245011 | DEVICE AND AUTHENTICATION METHOD THEREFOR - According to one embodiment, an authentication method includes generating, by the memory, first authentication information by calculating secret identification information with a memory session key in one-way function operation, transmitting encrypted secret identification information, a family key block, and the first authentication information to a host, and generating, by the host, second authentication information by calculating the secret identification information generated by decrypting the encrypted secret identification information with the host session key in one-way function operation. The method further includes comparing, by the host, the first authentication information with the second authentication information. | 08-28-2014 |
20140245023 | DEVICE AND AUTHENTICATION METHOD THEREFOR - According to one embodiment, an authentication method includes generating, by the memory, first authentication information by calculating secret identification information with a memory session key in one-way function operation, transmitting encrypted secret identification information, a family key block, and the first authentication information to a host, and generating, by the host, second authentication information by calculating the secret identification information generated by decrypting the encrypted secret identification information with the host session key in one-way function operation. The method further includes comparing, by the host, the first authentication information with the second authentication information. | 08-28-2014 |
20140245024 | DEVICE AND AUTHENTICATION METHOD THEREFOR - According to one embodiment, an authentication method includes generating, by the memory, first authentication information by calculating secret identification information with a memory session key in one-way function operation, transmitting encrypted secret identification information, a family key block, and the first authentication information to a host, and generating, by the host, second authentication information by calculating the secret identification information generated by decrypting the encrypted secret identification information with the host session key in one-way function operation. The method further includes comparing, by the host, the first authentication information with the second authentication information. | 08-28-2014 |
20140281551 | DATA RECORDING DEVICE, AND METHOD OF PROCESSING DATA RECORDING DEVICE - A controller is provided with a controller key and a first controller identification information unique to the controller. The controller generates a controller unique key unique to a respective controller based on the controller key and the first controller identification information, and a second controller identification information based on the first controller identification information. A decryptor decrypts the encrypted medium device key using the controller unique key to obtain a medium device key. An authentication/key exchange process unit performs authentication/key exchange process with the host device through an interface unit using the medium device key, the medium device key certificate and the second controller identification information to establish a secure channel. | 09-18-2014 |
20140289526 | AUTHENTICATOR, AUTHENTICATEE AND AUTHENTICATION METHOD - According to one embodiment, an authentication method between an authenticatee which stores key information having a data structure composed of a key transition record, secret information XY of a matrix form, and secret information XYE which is created by encrypting the secret information XY, and an authenticator which authenticates the authenticatee, includes selecting, by the authenticator, a record corresponding to a device index of the authenticator from the key information which is received from the authenticatee, and decrypting the record by a device key, thereby taking out a key transition, and executing, by the authenticator, a decryption process on the secret information XYE, which is received from the authenticatee, by using the corresponding key transition, and sharing the secret information XY. | 09-25-2014 |
20150046720 | HOST DEVICE, SEMICONDUCTOR MEMORY DEVICE, AND AUTHENTICATION METHOD - According to one embodiment, encrypted secret identification information (E-SecretID) and the key management information (FKB) are read from a memory device. Encrypted management key (E-FKey) is obtained using the key management information (FKB) and index information (k). The index information (k) and the encrypted management key (E-FKey) are transmitted to the semiconductor memory device. An index key (INK) is generated using the first key information (NKey) and the received index information (k). The encrypted management key (E-FKey) is decrypted using the index key (INK) to obtain management key (FKey), which is transmitted to the host device. | 02-12-2015 |
20150074394 | HOST DEVICE AND AUTHENTICATION METHOD FOR HOST DEVICE - A first data generation unit generates identification key information (FKey) that may be decrypted from the identification key information (IDKey) using key management information (FKB) read from an authenticatee. A decryption unit decrypts encrypted secret identification information (E-SecretID) using the identification key information (FKey) to generate secret identification information (SecretID). A second data generation unit generates a first session key (Skey) using the first key information (Hkey) and a random number. A one-way conversion unit performs a one-way conversion process on the secret identification information (SecretID) using the generated first session key (SKey) to generate first one-way conversion data (Oneway-ID). | 03-12-2015 |
20150074406 | MEMORY DEVICE AND MEMORY SYSTEM - For authentication of the host device, the memory device is configured to output the encrypted second key information (FKB) to the host device, output the encrypted identification information (E-SecretID) to the host device, generate third third key information (Hkey) using information (HC) received from the host device and the first key information, generate a session key (Skey) using a random number (RN) received from the host device, and the third key information,
| 03-12-2015 |
20150074421 | SECURITY SYSTEM - A security system includes a controller manufacturer, a key issuer, and a medium manufacturer. The controller manufacturer writes a controller key Kc and a controller unique ID (IDcu) in the controller at the time of manufacturing the controller, and transmits the controller key Kc to the key issuer. The key issuer generates a medium device key Kmd_i and a medium device key certificate Cert | 03-12-2015 |