Abstract: Systems and methods for encrypted content management are provided and include generating a user private key, a user public key, and a symmetric encryption key. A group private key, a group public key, and a group symmetric encryption key are generated and the group private key is encrypted with the group symmetric encryption key. A first shared-secret key is generated based on the user public key and the group private key using a diffie-hellman exchange algorithm. The group symmetric encryption key is encrypted using the first shared-secret key to generate an escrow key. Plaintext data is encrypted using a content symmetric key. A second shared-secret key is generated based on an ephemeral private key and the group public key using a diffie-hellman exchange algorithm. The content symmetric key is encrypted using the second shared-secret key.

Abstract: A system for synchronizing communication between devices includes a first cellular network antenna, and a second cellular network antenna in communication with the first cellular network antenna via a cellular network, each of the first cellular network antenna and the second cellular network antenna configured to broadcast outbound signals. The system includes a first communication device configured to receive outbound signals broadcast by the first cellular network antenna, and a second communication device configured to receive outbound signals broadcast by the second cellular network antenna, the first communication device and the second communication device configured to synchronize communication between one another according to at least one parameter of the received outbound signals.

Abstract: Systems and methods for encrypted content management are provided and include generating a user private key, a user public key, and a symmetric encryption key. A group private key, a group public key, and a group symmetric encryption key are generated and the group private key is encrypted with the group symmetric encryption key. A first shared-secret key is generated based on the user public key and the group private key using a diffie-hellman exchange algorithm. The group symmetric encryption key is encrypted using the first shared-secret key to generate an escrow key. Plaintext data is encrypted using a content symmetric key. A second shared-secret key is generated based on an ephemeral private key and the group public key using a diffie-hellman exchange algorithm. The content symmetric key is encrypted using the second shared-secret key.

Abstract: Systems and methods for encrypted content management are provided and include generating a user private key, a user public key, and a symmetric encryption key. A group private key, a group public key, and a group symmetric encryption key are generated and the group private key is encrypted with the group symmetric encryption key. A first shared-secret key is generated based on the user public key and the group private key using a diffie-hellman exchange algorithm. The group symmetric encryption key is encrypted using the first shared-secret key to generate an escrow key. Plaintext data is encrypted using a content symmetric key. A second shared-secret key is generated based on an ephemeral private key and the group public key using a diffie-hellman exchange algorithm. The content symmetric key is encrypted using the second shared-secret key.

Abstract: Systems and methods for encrypted content management are provided and include generating a user private key, a user public key, and a symmetric encryption key. A group private key, a group public key, and a group symmetric encryption key are generated and the group private key is encrypted with the group symmetric encryption key. A first shared-secret key is generated based on the user public key and the group private key using a diffie-hellman exchange algorithm. The group symmetric encryption key is encrypted using the first shared-secret key to generate an escrow key. Plaintext data is encrypted using a content symmetric key. A second shared-secret key is generated based on an ephemeral private key and the group public key using a diffie-hellman exchange algorithm. The content symmetric key is encrypted using the second shared-secret key.

Abstract: Systems and methods for encrypted content management are provided and include generating an asymmetric key pair for a user, including a user private key and a user public key. A symmetric encryption key is generated based on unique information known to the user. The user private key is encrypted using the symmetric encryption key to generate a user escrow key. Plaintext data is encrypted into ciphertext data using a content symmetric key and stored in a data storage unit. An ephemeral pair of keys is generated and includes an ephemeral public key and an ephemeral private key. A shared-secret key is generated based on the ephemeral private key and the user public key using a diffie-hellman exchange algorithm and the content symmetric key is encrypted using the shared-secret key. The encrypted content symmetric key and the ephemeral public key are stored in an encrypted content management storage unit.

Abstract: Systems and methods for encrypted content management are provided and include generating an asymmetric key pair for a user, including a user private key and a user public key. A symmetric encryption key is generated based on unique information known to the user. The user private key is encrypted using the symmetric encryption key to generate a user escrow key. Plaintext data is encrypted into ciphertext data using a content symmetric key and stored in a data storage unit. An ephemeral pair of keys is generated and includes an ephemeral public key and an ephemeral private key. A shared-secret key is generated based on the ephemeral private key and the user public key using a diffie-hellman exchange algorithm and the content symmetric key is encrypted using the shared-secret key. The encrypted content symmetric key and the ephemeral public key are stored in an encrypted content management storage unit.

Abstract: Systems and methods for encrypted content management are provided and include generating an asymmetric key pair for a user, including a user private key and a user public key. A symmetric encryption key is generated based on unique information known to the user. The user private key is encrypted using the symmetric encryption key to generate a user escrow key. Plaintext data is encrypted into ciphertext data using a content symmetric key and stored in a data storage unit. An ephemeral pair of keys is generated and includes an ephemeral public key and an ephemeral private key. A shared-secret key is generated based on the ephemeral private key and the user public key using a diffie-hellman exchange algorithm and the content symmetric key is encrypted using the shared-secret key. The encrypted content symmetric key and the ephemeral public key are stored in an encrypted content management storage unit.

Abstract: A thermal pump system energized by a daytime heating phase and a night time cooling phase associated with a naturally occurring environmental heating and cooling cycle includes a hydraulic fluid source, a thermal fluid expansion chamber having a fixed internal volume, and a hydraulic accumulator at least partially filled by a compressible gas. A first unidirectional flow valve connected to a first duct permits flow only out of the hydraulic fluid source during the night time cooling phase. A second unidirectional flow valve connected to a second duct permits flow only out of the thermal fluid expansion chamber upon expansion of the hydraulic fluid trapped in the thermal fluid expansion chamber due to heating during the daytime heating phase. The thermal fluid expansion chamber has a thermally conductive wall communicating thermal energy from the naturally occurring heating and cooling cycle to the hydraulic fluid trapped in the fixed internal volume.

Abstract: An acoustic detector assembly for detecting a leak of a pressurized mixture of liquids and gases in a pipeline or pressurized vessel that includes an ultrasonic acoustic transducer generating an output in response to receiving an acoustical signal associated with the leaking mixture of liquids and gases, a detector connected with the acoustic transducer.