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7620820 Content data processing method, recording device, and reproduction device  
The present invention provides a data processing method for encrypting or decrypting contents data using contents key data. The method comprises generating the reference information including data...
7614077 Persistent access control of protected content  
A system for providing persistent access control of protected content is disclosed. The method on a client system includes sending a first request for authentication of the client to a server...
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...
7603557 Communication device, communication system and authentication method  
A communication device, a communication system and an authentication system for preventing a disguising act by an illegal man-in-the-middle and improving the safety and certainty of authentication...
7599493 Asymmetric key pair having a kiosk mode  
Techniques for providing different levels of access based upon a same authentication factor are provided. A first message is received that is transformed with a first portion of a split private...
7596697 Technique for providing multiple levels of security  
Techniques for authentication are provided. A first authentication request transformed with a private portion of a first type split private key is received. A first user is authenticated for a...
7596368 Wireless access point apparatus and method of establishing secure wireless links  
A wireless network is connectable to an authentication server. Each access point in the wireless network includes a supplicant processing unit, an authenticator processing unit, and a function...
7596222 Encrypting data for access by multiple users  
A method for protecting data for access by a plurality of users. A server encrypts data using a master key and a symmetric encryption algorithm. For each authorized user, a key encryption key (KEK)...
7593528 Managing device keys in cryptographic communication  
To delegate authority for cryptographic communication without increasing the risk of leaking a device key. A system and method including a first communication apparatus and a managing apparatus...
7590868 Method and apparatus for managing encrypted data on a computer readable medium  
A method and apparatus for managing encrypted data on a computer readable medium wherein an encryption key is determined for a received quantum of data. The quantum of data is encrypted according...
7590238 Managing device keys in cryptographic communication  
To delegate authority for cryptographic communication without increasing the risk of leaking a device key. A system and method including a first communication apparatus and a managing apparatus...
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...
7581244 IMX session control and authentication  
A secured network connection requires three authentication routines. A system access authentication routine requires a client network device to submit user authentication information to a network...
7580523 Distribution of video content using client to host pairing of integrated receivers/decoders  
A host receiver and a client receiver are operatively in a direct broadcast satellite system. Program materials received by the host receiver from the direct broadcast satellite system are...
7580521 Identity-based-encryption system with hidden public key attributes  
A system is provided that uses identity-based encryption (IBE) to allow a sender to securely convey information in a message to a recipient over a communications network. IBE public key information...
7577425 Method for securing access to mobile IP network  
Networks consist of administrative domains each including an administrative server and at least one mobility agent deployed therein. The mobility agents offer connectivity to a mobile node via...
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...
7574600 System and method for combining user and platform authentication in negotiated channel security protocols  
A security protocol for combining user and platform authentication. The security protocol includes a first handshake phase to issue attestation identity credentials, and a second handshake phase to...
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...
7568113 Reliable storage medium access control method and device  
A method of and device ( 110 ) for granting access to content on a storage medium ( 101 ), comprising obtaining cryptographic data (Y) from a property ( 102 ), such as a wobble, of the storage...
7568111 System and method for using DRM to control conditional access to DVB content  
A system and method is disclosed for providing DRM in a broadcast environment. In accordance with the embodiment, a DRM system distributes encrypted service keys over the mobile telephone network...
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...
7565135 Performing authentication in a communications system  
A method and apparatus for performing authentication in a communications system is provided. The method includes receiving a request for authentication from a server, the request for authentication...
7562211 Inspecting encrypted communications with end-to-end integrity  
Encrypted communications between peers are inspected by a proxy server, for bugs, viruses, malicious software and the like, while the proxy server is prevented from modifying the encrypted...
7561696 Delivering policy updates for protected content  
Various embodiments permit policy updates, such as DRM policy updates, to be delivered and updated for a given piece of protected content. In at least some embodiments, various protocols can be...
7548624 Distribution of broadcast content for remote decryption and viewing  
Program materials received from a direct broadcast satellite system are distributed between a host receiver and a client receiver for remote decryption. Using either a same pairing key or different...
7546468 Program update method and server  
A system including a secure LSI 1 establishes a communication path to/from a server 3 (UD 1 ), and receives a common key-encrypted program generated by encryption with a common key and...
7543159 Device and method with reduced information leakage  
Provides a data processing system comprising a processor and encrypted information in a first persistent memory whose level of information leakage is higher than that of a second persistent memory....
7536540 Method of hardware driver integrity check of memory card controller firmware  
A memory system comprises an encryption engine implemented in the hardware of a controller. In starting up the memory system, a boot strapping mechanism is implemented wherein a first portion of...
RE40708 Dual encryption protocol for scalable secure group communication  
A logical tree structure and method for managing membership in a multicast group provides scalability and security from internal attacks. The structure defines key groups and subgroups, with each...
7523303 System and method for distributing digital works, apparatus and method for reproducing digital works, and computer program product  
An editing apparatus generates a capsular work with usage conditions for each of plural usages and usage secret information. A ticket server apparatus issues a ticket containing a ticket key in the...
7522727 Method and apparatus for providing authentication in a communication system  
A method includes receiving an authentication request from a mobile station ( 401 ) and determining whether to forward the request to an authentication agent. When it is determined to forward the...
7516321 Method, system and device for enabling delegation of authority and access control methods based on delegated authority  
A trusted authority delegates authority to a device. This delegation of authority is effected by providing a yet-to-be completed chain of public/private cryptographic key pairs linked in a...
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...
7512237 Encryption for optical communications using dynamic subcarrier multiplexing  
A multiplexing technique for optical communications used to create a pseudo-random communications signal in the optical domain such that only the sender and/or receiver can decode the signal. The...
7509492 Distributed scalable cryptographic access control  
Published resources are made available in an encrypted form, using corresponding resource keys, published through resource key files, with the publications effectively restricted to authorized peer...
7509292 Authentication of consumable items  
This invention concerns a consumable authentication method for validating the existence of an untrusted chip. A random number is encrypted using a first key and sent to an untrusted chip. In the...
7505584 Contents management method, contents management apparatus, and recording medium  
An apparatus generates first shared information that is shared by the apparatus and a recording medium by performing a first bilateral authentication. The apparatus encrypts overwrite data that is...
7500101 Recording/reproduction device, data processing device, and recording/reproduction system  
A device key 46 is implemented on a drive 4 side. To securely transmit the device key 46 to a host 5, the device key 46 is encrypted with a bus key. The host 5 side decrypts the device...
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...
7499551 Public key infrastructure utilizing master key encryption  
The disclosure encrypts and decrypts data using public key infrastructure with and allows an authorized third party to access and decrypt the encrypted data as required without requiring private...
7493429 Communication of information via a side-band channel, and use of same to verify positional relationship  
The present invention provides for trusted side-band communications between components in a computer system, so that use of the system bus may be avoided. Two components may be connected by means...
7492895 Data recording method and apparatus, data reproducing method and apparatus, and data recording and/or reproducing system  
Even though data transmitted between a data processing apparatus and disc recording and/or reproducing apparatus is monitored, copying the data is effectively prevented and the data can be...
7490242 Secure management of authentication information  
A system, method and computer program product are provided for managing authentication information for a user. According to the method, a master digital key is received from the user, and...
7487349 Method for securing a ciphered content transmitted by a broadcaster  
A method is for protecting an encrypted content, by use of at least one encryption key. The method includes generation of a temporary encryption key, encryption by the temporary key of a value...
7486792 Terrestrial broadcast copy protection system for digital television  
According to the invention, a method for protecting digital television from unauthorized digital receivers within a population of digital receivers is disclosed. Each digital receiver in the...
7477743 Hybrid network encrypt/decrypt scheme  
A hybrid method for a service provider to transmit decryption information (e.g., algorithms, parameters, keys) to clients in a secure manner and at low cost for use in decrypting broadcast...
7475247 Method for using a portable computing device as a smart key device  
A first data processing system, which includes a first cryptographic device, is communicatively coupled with a second data processing system, which includes a second cryptographic device. The...
7469263 Content management system for archiving data, managing histories, validity of content registration certification wherein the management device encrypts the content in response to a content storage, encrypts the encryption key with the media ID  
A content management system manages an original of electronic data content and is capable of handling increases in the volume of electronic data and maintains uniqueness of the original. Serial...
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...
Matches 1 - 50 out of 290 1 2 3 4 5 6 >