Abstract: An online service provisioning process is provided during which the service provider's knowledge about the user to whom the service is delivered does not increase. This is accomplished by presenting user attribute information to the service provider as obfuscated objects that can be independently verified and which are privacy preserving.

Abstract: Applications of the privacy switch technology are shown for handling data breaches in database systems, thereby providing fundamental improvements to the security and utility of database technology.

Abstract: A method is provided for validating an assertion provided by a web resource. The method includes: sending a first request to the web resource over a communications network; responsive to the first request, receiving a web page from the web resource, the web page including at least one user-selectable representation of a cryptographic credential, the cryptographic credential including at least one assertion that is based on underlying data and at least one proof that allows verification that the assertion accurately reflects the underlying data without revealing the underlying data; receiving a selection of the user-selectable representation that causes a second request for verification of the proof to be sent over the communications network; and responsive to the second request, receiving a response indicating whether or not the representation accurately reflects the underlying data.

Abstract: An online service provisioning process is provided during which the service provider's knowledge about the user to whom the service is delivered does not increase. This is accomplished by presenting user attribute information to the service provider as obfuscated objects that can be independently verified and which are privacy preserving.

Abstract: Applications of the privacy switch technology are shown for handling data breaches in database systems, thereby providing fundamental improvements to the security and utility of database technology.

Abstract: Applications of the privacy switch technology are shown for handling data breaches in database systems, thereby providing fundamental improvements to the security and utility of database technology.

Abstract: An online service provisioning process is provided during which the service provider's knowledge about the user to whom the service is delivered does not increase. This is accomplished by presenting user attribute information to the service provider as obfuscated objects that can be independently verified and which are privacy preserving.

Abstract: In accordance with a method of verifying a transaction between a user communication device and a third party, a request is received at each of a plurality of elector nodes to verify the transaction. A leader node is selected from among the elector nodes using a Proof of Elapsed Time (PoET) consensus decision-making algorithm in which each of the elector nodes is assigned a random wait time, the leader node being a first of the elector nodes whose wait time is exceeded. The leader node is used to select a subset of verifier nodes from among a plurality of verifier nodes in accordance with a second consensus decision-making algorithms different from the PoET consensus decision-making algorithm. The leader node is used to select a given verifier node from among the subset of nodes. The given verifier node is caused to verify the transaction.

Abstract: In accordance with a method of generating a cryptographic coin., a first spending right cryptographic credential is generated using a proof of zero knowledge protocol. The first spending right cryptographic credential includes a first cryptocurrency component and a proof that verifies that a first cryptocurrency transaction logic produced the first cryptocurrency component using as input a first spending right. A second spending right cryptographic credential is generated using the proof of zero knowledge protocol. The second spending right cryptographic credential includes a second cryptocurrency component and a proof that verifies that a second cryptocurrency transaction logic produced the first cryptocurrency component using as input a second spending right. A cryptographic coin is generated using service logic that encapsulates the first and second spending right cryptographic credentials using the proof of zero knowledge protocol.

Abstract: An online service provisioning process is provided during which the service provider's knowledge about the user to whom the service is delivered does not increase. This is accomplished by presenting user attribute information to the service provider as obfuscated objects that can be independently verified and which are privacy preserving.

Abstract: An online service provisioning process is provided during which the service provider's knowledge about the user to whom the service is delivered does not increase. This is accomplished by presenting user attribute information to the service provider as obfuscated objects that can be independently verified and which are privacy preserving.

Abstract: A method is provided for validating an assertion provided by a web resource. The method includes: sending a first request to the web resource over a communications network; responsive to the first request, receiving a web page from the web resource, the web page including at least one user-selectable representation of a cryptographic credential, the cryptographic credential including at least one assertion that is based on underlying data and at least one proof that allows verification that the assertion accurately reflects the underlying data without revealing the underlying data; receiving a selection of the user-selectable representation that causes a second request for verification of the proof to be sent over the communications network; and responsive to the second request, receiving a response indicating whether or not the representation accurately reflects the underlying data.

Abstract: Applications of the privacy switch technology are shown for handling data breaches in database systems, thereby providing fundamental improvements to the security and utility of database technology.

Abstract: An online service provisioning process is provided during which the service provider's knowledge about the user to whom the service is delivered does not increase. This is accomplished by presenting user attribute information to the service provider as obfuscated objects that can be independently verified and which are privacy preserving.

Abstract: Decentralization of application programs is a growing trend. It is known that user data communicated to different components of a transaction or application may be linked to derive a composite profile of users. A system and methods are presented that maintain user data privacy in decentralized networks, possibly containing multiple sensor devices. Applications to controlling smart devices and service portability across providers are shown.