A system for controlling access to encrypted vehicular data employs a hierarchical access control method that allows select encrypted vehicular data stored in a cloud server to be accessed by an authorized user in a hierarchical manner whereby the authorized user is then able to decrypt the select encrypted data and all child data associated with the select encrypted data.

Systems and methods for authentication generate keys from secret credentials shared between authenticating parties and authenticators. Generation of the keys may involve utilizing specialized information in the form of parameters that are used to specialize keys. Keys and/or information derived from keys held by multiple authorities may be used to generate other keys such that signatures requiring such keys and/or information can be verified without access to the keys. Keys may also be derived to form a hierarchy of keys that are distributed such that a key holder's ability to decrypt data depends on the key's position in the hierarchy relative to the position of a key used to encrypt the data. Key hierarchies may also be used to distribute key sets to content processing devices to enable the devices to decrypt content such that sources or potential sources of unauthorized content are identifiable from the decrypted content.

Systems and methods are provided for securing data using a mobile device. The method may include determining securing global positioning data values of the mobile device; measuring a securing direction of the mobile device relative to a magnetic north direction; capturing a securing password by the mobile device; and securing the data against unauthorized access using the determined global positioning data values, the securing password, and the securing direction as a combined password.

A method and system may allow for authenticating a computing device. A computing device may send an authentication request over a network to an authentication computing device. The authentication request may include a user name and a password. The user name may include a credential and the password may be a digitally signed version of the user name. The authentication computing device may authenticate the requesting computing device by decrypting the password and comparing the received user name to the decrypted password.

Systems and methods are described for securely and efficiently processing electronic content. In one embodiment, a first application running on a first computing system establishes a secure channel with a second computing system, the secure channel being secured by one or more cryptographic session keys. The first application obtains a license from the second computing system via the secure channel, the license being encrypted using at least one of the one or more cryptographic session keys, the license comprising a content decryption key, the content decryption key being further encrypted using at least one of the one or more cryptographic session keys or one or more keys derived therefrom. The first application invokes a second application to decrypt the license using at least one of the one or more cryptographic session keys, and further invokes the second application to decrypt the content decryption key using at least one of the one or more cryptographic session keys or one or more keys derived therefrom, and to decrypt a piece of content using the content decryption key. The first application then provides access to the decrypted piece of content in accordance with the license.

A system is configured for detecting a point of sale, receiving a personal identification number (PIN), generating a PIN based key using a message digest of the PIN, decrypting a data encryption key (DEK) using the PIN based key, and generating a DEK based dynamic key using the PIN based key. The system may also decrypt a session key using the DEK based dynamic key, generate a cryptogram from the session key, and send the cryptogram to the point of sale.

A method of operating a second network access node comprises configuring the second network access node to act as a secondary network access node for a dual connectivity mode for a terminal device in which a first network access node acts as a master network access node. The method further comprises establishing, while acting as a secondary network access node for the dual connectivity mode, that the second network access node should switch to acting as a master network access node, deriving a new master network access node security key for use by the second network access node when switched to acting as a master network access node for the dual connectivity mode, and configuring the second network access node to act a master network access node for the dual connectivity mode using the new master network access node security key.

A method of a communication device of requesting data of a destination network node via at least one intermediate node in a service chain. The method comprises acquiring a secret session key configured to subsequently verify authenticity of the requested data and first seed data to be used by the at least one intermediate node and the destination node to generate the session key, transmitting the data request, an indication of the service chain to be traversed, and the first seed data to a next-hop node in the service chain, receiving, in response to the forwarded data request, the requested data having been provided with an indication of authenticity by the next-hop node, and verifying the authenticity of the received data using the acquired session key, wherein the received requested data is considered authenticated.

A method in a User Equipment (UE) of an Evolved Packet System (EPS) establishes a security key (K_eNB) for protecting Radio Resource Control/User Plane (RRC/UP) traffic exchanged with a serving eNodeB. The method comprises sending a Non-Access Stratum (NAS) Service Request to a Mobility Management Entity (MME), the request indicating a NAS uplink sequence number (NAS_U_SEQ). The method further comprises receiving an indication of the NAS_U_SEQ of the NAS Service Request sent to the MME, back from the MME via the eNodeB. The method further comprises deriving the K_eNB from at least the received indication of the NAS_U_SEQ and from a stored Access Security Management Entity-key (K_ASME) shared with said MME.

A method for device authentication comprises receiving, by processing hardware of a first device, a message from a second device to authenticate the first device. The processing hardware retrieves a secret value from secure storage hardware operatively coupled to the processing hardware. The processing hardware derives a validator from the secret value using a path through a key tree. The first device then sends the validator to the second device.