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| Number | Title | Issue Date |
| 8355508 | Information processing apparatus, information processing method, and computer readable recording medium An information processing apparatus for collecting apparatus data from an apparatus connected through a network and sending the apparatus data to a server connected through the network includes a recording unit storing a secret key and a public key certificate which... | 01/15/2013 |
| 8351610 | Communication system and communication method To improve a communication system including two communication apparatuses so as to reduce a possibility of having communication decrypted by a third party. The communication system includes a first communication apparatus and a second communication apparatus, where ... | 01/08/2013 |
| 8325926 | Method for providing a broadcast encryption based home security system Provided is a method for providing a home or business security system that relies upon data encryption for both communication and the storage of content. The disclosed technology incorporates all the devices necessary for a comprehensive security system, including, ... | 12/04/2012 |
| 8315394 | Techniques for encrypting data on storage devices using an intermediate key A data storage device encrypts data stored in non-volatile memory using a bulk encryption key. The data storage device uses a key derivation function to generate an initial encryption key. The data storage device then wraps an intermediate encryption key with the in... | 11/20/2012 |
| 8295491 | Method for aggregating data in a network A method for aggregating data in a network, particularly in a wireless sensor network, wherein the network (1) includes a plurality of sensor nodes (Ni) to measure data and at least one sink node (S) at which the data measured by the sensor nodes (... | 10/23/2012 |
| 8249258 | Communication method and communication system using decentralized key management scheme A decentralized key management scheme that implements key management of a tree structure comprised of only group members without using a key management server is proposed, and communication method and system that can contribute to secure group communications is prov... | 08/21/2012 |
| 8234518 | Method for voting with secret shares in a distributed system A replicated decentralized storage system comprises a plurality of servers that locally store disk images for locally running virtual machines as well as disk images, for failover purposes, for remotely running virtual machines. To ensure that disk images stored for... | 07/31/2012 |
| 8170215 | Key management method for home network and home network device and system using the same A method of managing a home network key in a home network environment, which has a key management server for managing the home network key and a plurality of home network devices, includes: allowing a home network device to generate device unique information and to ... | 05/01/2012 |
| 8155321 | Methods and apparatus for protecting digital content A processing system to serve as a source device for protected digital content comprises a processor and control logic. The processing system may generate and save a first master key, and may transmit that key to a first receiving device for use during a first sessio... | 04/10/2012 |
| 8103004 | Method, apparatus and system for use in distributed and parallel decryption The present embodiments advantageously provide methods and systems for use in decrypting content, and in some preferred embodiments expanding a security environment to distribute the computational processing involved in decryption. In some embodiments, a method for ... | 01/24/2012 |
| 8090108 | Secure debug interface and memory of a media security circuit and method A method, system and apparatus of a secure debug interface and memory of a media security circuit and method are disclosed. In one embodiment, a host processor, an external hardware circuit to encrypt an incoming data bit communicated to a debug interface using a de... | 01/03/2012 |
| 8036388 | Information sending system, information sending device, information receiving device, information distribution system, information receiving system, information sending method, information receiving method, information distribution method, apparatus, sending method of information receiving device, playback method of apparatus, method of using contents and program storing medium Content data encrypted with a content key, the content key encrypted with an individual key specific to an information sending device, and the individual key encrypted with a distribution key that is updated in a predetermined cycle, and supplied are sent to an info... | 10/11/2011 |
| 7974416 | Providing a secure execution mode in a pre-boot environment In one embodiment, the present invention includes a method to establish a secure pre-boot environment in a computer system; and perform at least one secure operation in the secure environment. In one embodiment, the secure operation may be storage of a secret in the... | 07/05/2011 |
| 7949137 | Virtual disk management methods Virtual disks management methods and systems. First, a file space is set and a first password is set. A first device code is acquired. The file space is encrypted according to the first password and the first device code to obtain an encrypted file. Thereafter, a de... | 05/24/2011 |
| 7903821 | Method for managing key in multimedia broadcast and multicast service A method for managing key in Multimedia Broadcast/Multicast service comprising steps of defining a valid MTK ID interval for each generated MSK and sends it to a UE along with a MSK by a BMSC; after receiving the MSK, saving a valid MTK ID interval of the MSK by the... | 03/08/2011 |
| 7885413 | Hidden link dynamic key manager for use in computer systems with database structure for storage of encrypted data and method for storage and retrieval of encrypted data A computer system is disclosed that contains cryptographic keys and cryptographic key identifiers. The system has a repository cryptographic engine that communicates securely with a remote cryptographic engine, and the repository cryptographic engine is associated w... | 02/08/2011 |
| 7881478 | Method for controlling access to an encrypted programme An access control method is described for an encrypted program transmitted by an operator to a plurality of groups of subscribers, where each group of subscribers has a group key KG, and each subscriber is able to receive from the operator an operating key KT, encip... | 02/01/2011 |
| 7826620 | Information processor, information processing method, and computer program An information processor includes a data processing section that executes a processing of storing subsequently generated data, which is subsequently generated or acquired using information read from an information recording medium, onto a storage unit. The data proc... | 11/02/2010 |
| 7817802 | Cryptographic key management in a communication network A communication network (22) includes a central node (30) loaded with a trusted key (26) and key material (56) corresponding to an asymmetric key agreement protocol (48). The network (22) further includes vulnerable nodes ( | 10/19/2010 |
| 7813511 | Facilitating mobility for a mobile station Providing a mobility key for a communication session for a mobile station includes facilitating initiation of the communication session. A master key for the communication session is established, where the master key is generated at an authentication server in respo... | 10/12/2010 |
| 7769177 | Method for managing digital rights in broadcast/multicast service A method of digital rights management for a broadcast-multicast service, the method comprising receiving a request from a terminal to join a service domain having a common group key; transmitting encryption of one or more service encryption keys using the common gro... | 08/03/2010 |
| 7724907 | Mechanism for protecting the transfer of digital content According to one embodiment, a method for delivering a mating key to a smart card coupled to a decoding device with a built-in descrambler. The mating key is used by the smart card to encrypt the derived descrambling key for the specific decoder with descrambler. Th... | 05/25/2010 |
| 7715565 | Information-centric security A system for encrypting a data encryption key includes a key encryption key generator configured to receive a public portion of a label, the label including an asymmetric key pair of the public portion and a private portion, the key encryption key generator being fu... | 05/11/2010 |
| 7693285 | Secure communication apparatus and method A method and apparatus, such as a secure distribution server, receives encrypted information from a sender, wherein the encrypted information is for transmission to a plurality of intended recipients. In addition to the encrypted information, the method includes rec... | 04/06/2010 |
| 7672460 | Mix-net system Each participant apparatus (103) encrypts a plaintext by using a secret key of secret key cryptography, encrypts the encryption key by a public key, and sends the plaintext and public key to a substitution/decryption apparatus (112). With this processi... | 03/02/2010 |
| 7657036 | Determining a session encryption key during a broadcast/multicast service session using secure real-time transport protocol Techniques are provided for determining an updated session encryption key. According to one embodiment, a packet index can be computed using a sequence number received in a session data packet during a SRTP session and a predetermined value. The predetermined value ... | 02/02/2010 |
| 7636441 | Method for secure key exchange Secure key exchange and protected content distribution between a first entity and a second entity in a processing system may be accomplished by generating, by the first entity, a first key, encrypting the first key with a public key of a third entity, and storing th... | 12/22/2009 |
| 7630498 | Engine, register and methods for the same An engine, register in a memory, and methods for the same are provided. The engine may include a data encryptor, a key encryptor, a data decryptor, a key decryptor, a register, and a control circuit. The data encryptor may encrypt data using a key. The key encryptor... | 12/08/2009 |
| 7613303 | Controlling delivery of broadcast encryption content for a network cluster from a content server outside the cluster Controlling delivery of broadcast encryption content for a network cluster from a content server outside the cluster that include receiving in the content server from the network device a key management block for the cluster, a unique data token for the cluster, and... | 11/03/2009 |
| 7587051 | System and method for securing information, including a system and method for setting up a correspondent pairing The present invention consists in a system for securing data exchanged between two users having a First Information Processing System (FIPS) and a Second Information Processing System (SIPS) that have been correspondently paired. To complete encryption, the system i... | 09/08/2009 |
| 7577258 | Apparatus and method for group session key and establishment using a certified migration key A method and apparatus for group session key and establishment using a certified migration key are described. In one embodiment, the method includes exporting of a protected certified migration key (CMK) to a target platform. In one embodiment, exporting of the prot... | 08/18/2009 |
| 7570768 | Systems, structures, and methods for decrypting encrypted digital content when a rights management server has been decommissioned A method is disclosed for rendering content encrypted according to a cryptographic key, where the content has corresponding rights data including a decryption key (KD) for decrypting the encrypted content, and where (KD) in the rights data is encrypted according to ... | 08/04/2009 |
| 7567674 | Content transmission apparatus, content reception apparatus, content transmission program, and content reception program A content transmission method, a content reception method, an apparatus and a computer program using same, that improve the efficiency of descrambling a scrambled content, make the management of cryptography keys for descrambling easy, and protect the copyright of c... | 07/28/2009 |
| 7512242 | Systems and methods for quantum cryptographic key transport A system transports a key between a first node (505) at one end of a path (500) through a quantum cryptographic key distribution (QKD) network to a second node (525) at an opposite end of the path (500), where the QKD network includes mul... | 03/31/2009 |
| 7499552 | Cipher method and system for verifying a decryption of an encrypted user data key A cipher method for verifying a decryption of an encrypted user data key used to encrypt user data prior to an encryption of the user data key with an encryption key. The cipher method involves a decryption of the encrypted user data key with a decryption key in res... | 03/03/2009 |
| 7457419 | Information processing method and apparatus for encrypting encoded data The present invention makes it possible to encrypt a portion of a tile image to be subject to wavelet transformation at or above a desired resolution level without the need to manage multiple encryption keys. The invention divides the sub-bands generated with each w... | 11/25/2008 |
| 7440574 | Content encryption using programmable hardware Methods and apparatus are disclosed for a content encryption scheme using programmable hardware. In one embodiment, a content request is transmitted to a content provider. In response to the content request, a session key is received and programmable hardware is con... | 10/21/2008 |
| 7437567 | Portable device and method for accessing data key actuated devices Data key actuated devices such as high security doors are modified so that they periodically transmit an identity pattern. An authorized user is provided with a portable access device storing keys for a number of such key actuated devices, with each key associated w... | 10/14/2008 |
| 7433474 | Method and apparatus of enciphering and deciphering data using keys enciphered and deciphered with other keys On a recording medium, first information obtained by enciphering data with the first key and second information obtained by enciphering the first key with each of the predetermined second keys are recorded. A deciphering method is characterized by comprising the ste... | 10/07/2008 |
| 7428637 | Dynamic authentication and initialization method A method for authentication of a first client in communication with a second client via an authentication server is disclosed, such that the first client and the second client are authenticated to each other, and the authentication server is authenticated to both th... | 09/23/2008 |
