Techniques for enhancing the security of a communication device when conducting a transaction using the communication device may include encrypting account information with a first encryption key to generate a second encryption key, and encrypting key index information using the second key to generate a limited-use key (LUK). The key index information may include a key index having information pertaining to generation of the LUK. The LUK and the key index can be provided to the communication device to facilitate generation of a transaction cryptogram for a transaction conducted using the communication device, and the transaction can be authorized based on the transaction cryptogram generated from the LUK.

A processor receives a signal representing data including event information detailing an event involving an entity having a registered ownership interest in a product and loads a portion of a distributed electronic ledger for tracking ownership information associated with the product. The distributed electronic ledger includes, within a block thereof and associated with the product, an event trigger list including entity data associated with each entity having a registered ownership interest in the product and a rules engine including rules associated with event triggers in the event trigger list. The processor determines whether a triggering event corresponding to the event is stored in the event trigger list and, when the event has a corresponding triggering event, determines the associated rule within the rules engine. The processor updates and saves the distributed electronic ledger by performing an action specified by the determined associated rule.

A system on a chip (SoC) includes a security processor configured to determine that a first channel ID describing a {source, destination} tuple for a crypto packet matches a second channel ID describing a corresponding {source, destination} tuple for a preceding crypto packet received immediately prior to the crypto packet. The SoC also includes a decryption engine configured to, responsive to the determination that the first channel ID matches the second channel ID: obtain a set of round keys applied to perform an add round key computational stage of a previous decryption datapath used to decrypt a preceding cipher text block obtained from the preceding crypto packet, and to reuse the set of round keys to perform a corresponding add round key computational stage of a current decryption datapath used to decrypt a cipher text block obtained from the crypto packet.

A computer-implemented method according to one aspect includes creating an initialization vector, utilizing an instance of plaintext and a secret key; encrypting the instance of plaintext, utilizing the initialization vector, the secret key, and the instance of plaintext; combining the initialization vector and the encrypted instance of plaintext to create a ciphertext string; and outputting the ciphertext string.

Systems, methods, and computer-readable media for communicating electronic device secure element data over multiple paths for online payments are provided. In one example embodiment, a method includes, inter alia, at a commercial entity subsystem, receiving, from an electronic device, device transaction data that includes credential data indicative of a payment credential on the electronic device for funding a transaction with a merchant subsystem, accessing a transaction identifier, deriving a transaction key based on transaction key data that includes the accessed transaction identifier, transmitting, to one of the merchant subsystem and the electronic device, merchant payment data that includes a first portion of the credential data and the accessed transaction identifier, and sharing, with a financial institution subsystem using the transaction key, commercial payment data that includes a second portion of the credential data that is different than the first portion of the credential data. Additional embodiments are also provided.

A hardware encryption module with reconfigurable security algorithms for randomly selecting block ciphers, stream ciphers, and their components, for internet of things (IoT) and data security applications. A corresponding system contains a hardware number generator for generating unique secrets in digital and wireless communication protocols. The system contains a cryptographically secure pseudorandom number generator for creating deterministic random sequences for the reconfigurable logic module. The system contains a multiplexing scheme to send keys and cipher texts in accordance with a wireless communication protocol. The hardware encryption module can be used to reconfigure block cipher algorithms, modes of operation, key scheduling algorithms, confusion functions, and/or round orders, based on reconfigurable logic. One type of reconfigurable logic allows stream cipher algorithms and key mixing keys to be changed at random.

Techniques for rapid video on demand (VOD) media content breach response are described. In some embodiments, during content preparation, a server generates an encrypted media content item by generating a first encrypted portion using a first key derived from a first seed that is of a first type and generating a second encrypted portion using a second key derived from a second seed that is of a second type. In some embodiments, the server classifies the first portion in a first category (e.g., a prioritized category) and the second portion in a second category (e.g., a non-prioritized category). During a breach response, the server repairs the encrypted media content item by re-encrypting portions in the first category, e.g., re-encrypting the first encrypted portion using a replacement key derived from a replacement seed that is of the first type, and updating encryption metadata.

A digital content distribution system uses a Digital Rights Management Controller that performs a set of arbitrary tests against the transfer request from one user to another such as user A to user B. Assuming these tests are successful, the DRM sends an encryption key to transferring user A. This encryption key E is taken from a table of encryption key/hash pairs which have been provided to the DRM Controller by an external authority such as the content rights holder. User A encrypts the content using they key provided by the DRM controller and then optionally calculates a hash over the encrypted form of the content E(X) and returns this value to the DRM Controller. On checking the returned hash against the hash from the table the DRM controller knows that user A does indeed have the digital content X in good condition. The DRM Controller then instructs both users A and B that the transfer may proceed. The encrypted form of the content E(X) is transferred from A to B. Once the content transfer has completed B ensures that the received content has been physically written to non-volatile storage (to account for crashes etc. during the next step). B then calculates a hash over the received content and returns this value to the DRM Controller. If this value matches the value previously given then the transfer has been successful and the DRM Controller updates whatever central records are appropriate, while also returning a decrypt key to B to allow it to decrypt the content.

A communication system is described in which user plane communication and control plane communication for a particular mobile communication device can be split between a base station that operates a small cell and a macro base station. Appropriate security for the user plane and control plane communications is safeguarded by ensuring that each base station is able to obtain or derive the correct security parameters for protecting the user plane or control plane communication for which it is responsible.

A method for performing a security chip protocol comprises receiving, by processing hardware of a security chip, a message from a first device as part of performing the security chip protocol. The processing hardware retrieves a secret value from secure storage hardware operatively coupled to the processing hardware. The processing hardware determines a path through a key tree based at least in part on the message. The processing hardware derives a validator at least in part from the secret value using a sequence of entropy redistribution operations associated with the path through the key tree. The processing hardware exchanges the validator between the security chip and the first device as part of the security chip protocol in order to authenticate at least one of the security chip or the first device.