Cryptographic flow-based security protocol for aerospace communication

A computer system implemented on a satellite, the computer system comprising:

• at least one hardware processor;
• and
• at least one non-transitory memory storing instructions, which, when executed by the at least one hardware processor, cause the computer system to:
• receive, from a ground station, multiple first commands out-of-order for replicating a conflict-free replicated dataset at the satellite,
• wherein the multiple first commands are transmitted out-of-order, and
• wherein an authority to access the conflict-free replicated dataset is retrievable from a block of a blockchain;
• reorder the multiple first commands based on an ordering specified by a causal tree received from the ground station;
• replicate a global state of the conflict-free replicated dataset locally at the satellite based on the multiple first commands reordered in accordance with the causal tree;
• receive, from the ground station, multiple second commands for performing operations on the conflict-free replicated dataset;
• and
• perform the operations on the conflict-free replicated dataset, using the multiple second commands, based on the authority retrieved from the blockchain.

At least one non-transitory, computer-readable storage medium storing instructions, which, when executed by at least one data processor of a computer system, cause the computer system to:

• generate, by a ground station, a conflict-free replicated dataset for replication at one or more aerial vehicles;
• store an authority to access the conflict-free replicated dataset in a block of a blockchain;
• generate multiple commands for replication of the conflict-free replicated dataset at the one or more aerial vehicles,
• wherein the multiple commands have an ordering specified by a causal tree;
• transmit the multiple commands out-of-order to the one or more aerial vehicles,
• wherein the conflict-free replicated dataset is configured to be replicated based on the multiple commands reordered based on the causal tree;
• and
• cause the one or more aerial vehicles to:
• reorder the multiple commands based on the causal tree;
• retrieve the authority stored in the blockchain;
• and
• replicate a global state of the conflict-free replicated dataset locally at the one or more aerial vehicles based on the authority and the multiple commands reordered in accordance with the causal tree.