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Cryptography > Key Management > Key Distribution > Key Distribution Center > By Public Key Method By Public Key MethodBy Public Key Method patent applications listed are from June 2005 to current and include Date, Patent Application Number, Patent Title, Patent Abstract summary and are linked to the corresponding patent application page.08/30/07 - 20070201702 - 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 executed at a content provider's site, at an operations center, over a video distribution system or over a variety of alternative distribution systems, ... 06/14/07 - 20070133807 - Tag authentication apparatus and method for radio frequency identification system A radio frequency identification (RFID) tag authentication apparatus and method for accomplishing quick authentication and solving privacy problems using a hash algorithm are provided. An RFID tag includes a memory unit storing a tag's secret information and a group's secret information and a hash chain computation unit encrypting secret information ... 05/03/07 - 20070098178 - Method and apparatus for automatic and secure distribution of an asymmetric key security credential in a utility computing environment Embodiments of the invention provide a method and an apparatus for automatic, secure, and confidential distribution of an asymmetric key security credential in a utility computing environment. In one method embodiment, the present invention provides an asymmetric key at a management server, the asymmetric key automatically associated with a logical ... 04/19/07 - 20070086592 - Determining the reputation of a sender of communications A method and system for determining the reputation of a sender for sending desirable communications is provided. The reputation system identifies senders of communications by keys sent along with the communications. The reputation system then may process a communication to determine whether it is a desirable communication. The reputation system ... 09/14/06 - 20060204011 - System and method for sending encrypted messages to a distribution list A system and method for sending encrypted messages to a distribution list that facilitates the sending of such messages only to individuals or other entities associated with the distribution list that will be able to read the message. In one embodiment, the method comprises the steps of: identifying a distribution ... 08/10/06 - 20060177068 - Methods and apparatus for facilitating a secure processor functional transition A processor and associated local memory are capable of operative connection to a main memory such that data may be read from the main memory for use in the local memory, and the processor is operable to carry out actions, including: entering a secure mode of operation where externally initiated ... 05/11/06 - 20060098824 - Method and apparatus for providing short-term private keys in public key-cryptographic systems A computing entity has an associated static public/private key-pair formed by a static private key comprising a secret, and a static public key comprising both a first element and that element combined with the secret. The secret is stored in higher-security storage provided, for example, by a smartcard. A short-term ... 05/04/06 - 20060093150 - Off-loading data re-encryption in encrypted data management systems Described is a solution for maintaining the security of encrypted data despite a compromised private key by using a re-encryption process that does not require decryption of the encrypted data. The compromised private key is re-encrypted using a new public key as is the encrypted symmetric key which the compromised ... 03/23/06 - 20060062394 - Encrypted communication for selectively delivering a message to multiple decrypting devices Reduces message length of encrypted message to be transmitted selectively to plurality of decrypting devices. An encrypting device includes a generating unit for generating node associating information configured to associate respective terminal nodes in a tree structure with each decrypting device in relation to a group of decrypting devices enabled ... 01/19/06 - 20060013402 - Method of delivering direct proof private keys to devices using an on-line service Delivering a Direct Proof private key to a device installed in a client computer system in the field may be accomplished in a secure manner without requiring significant non-volatile storage in the device. A unique pseudo-random value is generated and stored in the device at manufacturing time. The pseudo-random value ... 09/29/05 - 20050213769 - Cryptographic method and devices for facilitating calculations during transactions The cryptographic method is used in transactions for which a first entity generates, by means of a private RSA key, a proof verifiable by a second entity by means of a public RSA key associated with said private key. The public key includes an exponent and a module. The first ... ### FreshPatents.com Support |