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7319752 |
Information recording device, information playback device, information recording method, information playback method, and information recording medium and program providing medium used therewith
An information recording/playback device stores beforehand, on a recording medium, secret information in which a writing/reading method thereof cannot be analyzed and which can be read only by a...
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7319759 |
Producing a new black box for a digital rights management (DRM) system
A new ((n)th) black box is produced for a digital rights management (DRM) system. The (n)th black box is for being installed in and for performing decryption and encryption functions in the DRM...
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7317797 |
Seamless switching between multiple pre-encrypted video files
In a video on demand (VOD) system, methods and apparatus are provided for seamlessly switching back and forth between two pre-encrypted files having changing encryption keys. Such switching back...
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7317798 |
Communication processing system, communication processing method, server and computer program
A communication processing system which allows a secure communication with a mobile terminal via a network. The communication processing system includes a server which provides a common key used to...
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7315945 |
Directoryless public key cryptographic system and method
A method of operating an identity based directoryless key-code cryptographic communication system having two users A and B and a universal authority U, involving the generation of a public modulus...
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7313239 |
Method and system for data encryption/decryption key generation and distribution
Aspects of an encryption/decryption key generation and distribution may include generating one or more keys for use by one of a plurality of encryption/decryption devices coupled to a serial link...
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7313814 |
Scalable, error resilient DRM for scalable media
An exemplary digital rights management engine and related methods divides multimedia content into service level layers, encrypts at least some of the layers, and offers access to the encrypted...
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7313689 |
Method, system and service for the authentication of a public key certificate
A method, system, and service of authenticating a public key certificate for a relying party (RP). A Certificate Authority (CA), who issued the certificate, is a member of a Public Key...
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7313238 |
Method and system for relating cryptographic keys
A method and system for relating cryptographic keys. A method includes providing to a user a private share related to a key. The method also includes generating a new key based on a previous...
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7310424 |
Encryption key distribution and network registration system, apparatus and method
A control method, apparatus, and system capable of securely distributing a shared secret network encryption key from a host to a wireless peripheral device. The sharing of the secret network...
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7308097 |
Digital signature and authentication method and apparatus
A method, system and apparatus for performing user identification, digital signatures and other secure communication functions in which keys are chosen essentially at random from a large set of...
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7308583 |
Data distribution system
Each of a plurality of contents supply systems connected to a single user apparatus uses a group management method that employs flexible and unique tree structures. A manager in each contents...
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7305084 |
Fast encryption and authentication for data processing systems
Methods and apparatus are presented for secure, authenticated communication and data storage. The methods can be based on other methods such as IAPM, in which the encryption and authentication keys...
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7302572 |
Portable information storage medium and its authentication method
Authentification data (R) comprising random numbers generated by a reader/writer ( 200 ) is given to an IC card ( 100 ), encrypted by utilizing a secret key (a), and returned as encryption data...
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7298839 |
Squared Weil and Tate pairing techniques for use with elliptic curves
Methods and apparati are provided for use in determining “Squared Weil pairings” and/or “Squared Tate Pairing” based on an elliptic curve, for example, and which are then used to support...
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7298851 |
Electronic book security and copyright protection system
The invention, electronic book security and copyright protection system, provides for secure distribution of electronic text and graphics to subscribers and secure storage. The method may be...
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7298849 |
Method and apparatus for simultaneous encryption and decryption of publicly distributed media
The present invention provides secure communication from one encryption domain to another using a trusted module. In one embodiment, the invention includes generating a cipher stream based on a...
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7298850 |
Encrypting keypad module
An encrypting keypad module ( 30 ) comprising a keypad ( 40 ) and an encryption unit ( 42 ) is described. The encryption unit ( 42 ) includes an interpreter ( 56 ) for receiving a file ( 150 )...
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7295671 |
Advanced encryption standard (AES) hardware cryptographic engine
A cryptographic method and related implements the Rijndael—AES encryption standard. In one improvement, the decryption round keys are generated on a round by round basis from the final Nk round...
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7289632 |
System and method for distributed security
A security architecture in which a security module is integrated in a client machine, wherein the client machine includes a local host that is untrusted. The security module performs encryption and...
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7290135 |
Method and arrangement for data communication in a cryptographic system containing a plurality of entities
A method for data communication in a cryptographic system containing a plurality of entities is specified, in which the entities are arranged in a hierarchical structure. If a current entity in the...
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7287162 |
System and method for platform activation
A platform discrimination indication register is stored in a wireless network card. This register holds a platform discrimination indication that indicates whether the wireless network card can be...
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7284121 |
System and method for transmitting reduced information from a certificate to perform encryption operations
A certificate-based encryption mechanism in which a source client does not access the entire certificate corresponding to a destination client when encrypting an electronic message to be sent to...
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7284125 |
Method and apparatus for personal identification
A user-worn device 10 a that is to be installed in user-worn equipment 30 a that can be worn by a user, and a user device 20 a that is to be installed in user equipment 40 a to be used by...
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7281010 |
Trusted computing platform with dual key trees to support multiple public/private key systems
The present invention addresses the foregoing need by creating two identically structured storage trees with a single storage root key. As envisioned in the current art (e.g., the TCPA...
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7281132 |
Using token-based signing to install unsigned binaries
The present invention provides for token based signing of an unsigned binary which may be a stream of bits (e.g., 0's and 1's). The unsigned binary is signed using a secret key which resides in a...
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7280663 |
Encryption system based on crossed inverse quasigroups
Encryption is carried out based on a non field, non group algebraic structure. Preferably the algebraic structure is at least one of non-associative or non-commutative. An embodiment is described...
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7277549 |
System for implementing business processes using key server events
A key server ( 320 ) based communication system ( 310 ) wherewith communicating parties, originators ( 312 ) and recipients ( 314 ), exchange encrypted communications ( 324 ). An originator...
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7277871 |
Digital watermark system
A digital watermark embedding apparatus generates an echo signal, which is delayed a time period corresponding to digital watermark information to be embedded with respect to each tone signal that...
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7274791 |
Quantum cryptographic system and method for achieving unambiguous state discrimination measurement of coherent light states
A quantum cryptographic receiver, a method of achieving unambiguous state discrimination measurement of a coherent light state and a quantum cryptographic system incorporating the quantum...
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7272229 |
Digital work protection system, key management apparatus, and user apparatus
In a system composed of a recording apparatus that records digitized content such as a movie, or a reproduction apparatus that reproduces the digitized content, and a recording medium, a media key...
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7270193 |
Method and system for distributing programs using tamper resistant processor
A scheme for distributing executable programs through a network from a program distribution device to a client device having a tamper resistant processor which is provided with a unique secret key...
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7272230 |
Encryption system and control method thereof
To provide a cryptographic system capable of flexibly changing decryption authorization and preventing the action of a third person impersonating a user having the decryption authorization to...
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7269259 |
Methods and apparatus for authenticating data as originating from a storage and processing device and for securing software and data stored on the storage and processing device
Techniques are described for using unique features of a storage medium for authentication of data as originating from the storage medium, and also for installing software and data to a storage...
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7269736 |
Distributed cryptographic methods and arrangements
First and second computing devices are selectively operatively coupled together. The first device provides data to the second device. The second device can be a portable computing device. The...
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7269738 |
High throughput and flexible device to secure data communication
The present invention provides a device for securing data communication, said device being part of a system and comprising a dynamically reconfigurable logic array comprising separate blocks for...
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7269257 |
System and method for processing information using encryption key block
An information processing system and method using an encryption key block sets sub-trees classified based on data processing ability of the devices (capability) in a key tree in which respective...
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7266691 |
Contents providing system
After a reproduction program is installed on a PC, a key for CD ripping is furnished e.g., from an FD. With the key for CD ripping, the music contents in a CD can be copied to a PC, however, it is...
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7266687 |
Method and apparatus for storing and distributing encryption keys
A method of key distribution includes generating, by a first system device ( 101 ), key material and forwarding the key material from the first system device ( 101 ) to a second system device ( 107...
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7266201 |
Non-disruptive authentication administration
A configurable timer may be used for seamless authentication administration. A network administrator may set the timer value. Then the network administrator may begin to update the authentication...
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7266685 |
Time certification in a wireless communications network
The time reference of a user terminal that is derived from an unauthenticated access point can be certified by a trusted entity according to the present invention. In one embodiment, the present...
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7263192 |
Establishing an encrypted session
A method of establishing an encrypted session. An identifier is sent from a first node to a second node via a first connection. Either an encryption algorithm or an identifier of the encryption...
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RE39802 |
Storage medium for preventing an irregular use by a third party
A storage medium stores encrypted electronic data, a medium personal number which is unique for each storage medium and encrypted permission information. At least the medium personal number is...
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7263187 |
Batch mode session-based encryption of video on demand content
A Video On Demand (VOD) method consistent with certain embodiments involves processing content to be delivered in a VOD method by selecting first portions of the content for encryption under a...
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7260716 |
Method for overcoming the single point of failure of the central group controller in a binary tree group key exchange approach
An approach for managing addition or deletion of nodes in a multicast or broadcast group, which avoids introducing a single point of failure at a group controller, certificate authority, or key...
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7260552 |
Secure remote electronic voting system and cryptographic protocols and computer programs employed
The method employs interrelated cryptographic processes and protocols to provide reliability to vote casting, ballots recount, and verification of vote or poll results. These cryptographic...
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7257229 |
Apparatus and method for key scheduling
A key scheduler for encryption/decryption produces a new ciphering key by a key expansion process or recovers a previous ciphering key by an inverse expansion process. The key scheduler includes a...
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7254295 |
Optical fiber interferometer with relaxed loop tolerance and QKD system using the same
An optical fiber interferometer ( 10 ) with relaxed loop tolerance, and a quantum key distribution (QKD) system ( 200 ) using same is disclosed. The interferometer includes two optical fiber loops...
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7254237 |
System and method for establishing a secure connection
A system and method initiates secure sessions without occupying a process on the server until the premaster key is received from the client.
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7251326 |
Method and apparatus for data encryption
A method and apparatus for use in encrypting and decrypting digital communications converting an initial block to final block based on freely selectable control information and secret key...
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