Nokia Technologies Oy

Olli Oskari Koskimies

Markus Isomäki

Lioudmila Lucy Blants

Juha Tapani Uola

Timo Tapani Mikola

Pekka Juhani Reijula

Lauri Petteri Paimen

Johan Wilhelm Rainersson Wikman

According to an example aspect of the present invention, there is provided an apparatus comprising a memory configured to store an encryption key and a list of access tokens and at least one processing core configured to select a first access token from the list of access tokens based, at least partly, on at least one of a current time and a sequence number, decide, based at least partly on the first access token, whether to grant a user device access to the apparatus, and cause the apparatus to receive a second list of access tokens from at least one of the user device and a second user device.

Access management

According to an example aspect of the present invention, there is provided an apparatus comprising at least one processing core, at least one memory including computer program code, the at least one memory and the computer program code being configured to, with the at least one processing core, cause the apparatus at least to compile, from information comprised in a message received in the apparatus, a protection bit sequence, the protection bit sequence comprising a first part and a second part, identify a sender of the message based on identifying a secret key that decrypts the first part into a plaintext bit sequence comprised in the message, and verify the protection bit sequence has been advanced with respect to a protection bit sequence in a previous message from the same sender.

Message authentication

According to an example aspect of the present invention, there is provided an apparatus comprising at least one processing core configured to obtain, from a timestamp, a truncated timestamp comprising a first number of least significant bits of the timestamp and not comprising at least one most significant bit of the timestamp, to derive a hash value based at least in part on the timestamp, a payload and a secret value, and to compile a first message comprising the truncated timestamp, the payload and, at least in part, the hash value, and a transmitter configured to be directed by the at least one processing core, to transmit the first message toward a recipient.

Message verification

This specification relates to a method and apparatus for receiving user tracking data from a user tracking system, the user tracking data comprising at least one tracking parameter relating to a user position; determining whether one or more tracking parameters are missing; in response to determining that one or more tracking parameters are missing, sending a request to a server for a prediction model for estimating the one or more missing tracking parameters; receiving the prediction model from the server; and calculating an estimated position in respect of each of the one or more missing tracking parameters based on the received prediction model. This specification also relates to a method and apparatus for receiving, from a first application, a request for a prediction model for at least one of a plurality of tracking parameters, the request indicating that at least one tracking parameter of user movement tracking data is missing, retrieving a prediction model corresponding to the request; and sending the prediction model to the first application.

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Helsinki, Finland

Olli Oskari Koskimies