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Girao
Joao Girao, Ludwigshafen DE
| Patent application number | Description | Published |
|---|---|---|
| 20100008508 | METHOD FOR ESTABLISHING A SECRET KEY BETWEEN TWO NODES IN A COMMUNICATION NETWORK - A method for establishing a secret key between two nodes in a communication network, in particular in a wireless local area network (WLAN), includes concealment of the fact that a key exchange occurs, one of the nodes—first node (B)—broadcasts one or more packets (P | 01-14-2010 |
| 20100319068 | METHOD AND SYSTEM FOR PERFORMING DELEGATION OF RESOURCES - A method for performing delegation of resources, in particular services, wherein a user—resource owner—has access to a resource offered by a service provider and wherein the resource is delegated to at least one other user—delegate—by using delegation credentials, is characterized in that the method includes the steps of defining authorization rules for the delegate regarding resource access restrictions and registering the authorization rules at an identity provider thereby employing the delegation credentials, performing an authentication of the delegate at the service provider, and performing an authorization of the delegate at the identity provider based on the authorization rules. Furthermore, a corresponding system is disclosed. | 12-16-2010 |
Joao Girao, Heidelberg DE
| Patent application number | Description | Published |
|---|---|---|
| 20100180119 | KEY EXCHANGING APPARATUS - A key exchanging apparatus transmits the contribution data to the plurality of counterpart apparatuses, generates a signer contribution confirmation signature with respect to a contribution data set including all the contribution data received from the plurality of counterpart apparatuses, generates auxiliary data and auxiliary data validity certification sentence from the contribution data set and the contribution random number, transmits the auxiliary data, the auxiliary data validity certification sentence and the contribution confirmation signature to the plurality of counterpart apparatuses, verifies validity of auxiliary data by using the counterpart identifier set, the counterpart public key set, the contribution confirmation signature set including the data received from the plurality of counterpart apparatuses, the auxiliary data set and the auxiliary data validity certification sentence set, and generates a public key from the contribution data set and the auxiliary data received from the plurality of counterpart apparatuses. | 07-15-2010 |
Joao Girao, Leimen DE
| Patent application number | Description | Published |
|---|---|---|
| 20090268909 | METHOD FOR OPERATING A WIRELESS SENSOR NETWORK - A method for operating a wireless sensor network, wherein the sensor network includes a multitude of distributed sensor nodes for sensing data within a pre-definable environment, and wherein the sensor nodes can exchange information via encrypted data transmissions over a radio Channel is—regarding the fact that during the operational phase of the network the Performance of changes in the network, in particular the composition of the sensor nodes that are integrated in the network, is allowed in a flexible way—characterized in that a subset of sensor nodes of the network is manipulated in order to establish a shared secret (x) by transferring a defined information to the sensor nodes of the subset over a secure out of band (OOB) Channel. | 10-29-2009 |
| 20100135494 | METHOD FOR AGGREGATING DATA IN A NETWORK - A method for aggregating data in a network, particularly in a wireless sensor network, wherein the network ( | 06-03-2010 |