A novel error correction and encryption algorithm combined fountain code and AES

Satellite broadcast communications make demand on reliable and secure data transmissions. Aiming at balancing data disorder and correlation from encryption and errors correction, this paper proposes a novel error correction and encryption algorithm combined fountain code and advanced encrypt standard (FC-AES), which constructs a 3-layer cascade framework for cryptosystem to harmonize the coding payloads of services, products, and users. Furtherly, distributed degree would be compensated with round key, which provides with entire security controls. Information degree is designed to limit data overhead and disorder. Sparsely coding control for product degree is developed to prevent decoding error avalanche. We also provide a suitable decryption scheme for FC-AES. The simulations show the new algorithm enhances the performance of data-recovery failure probability by 29.56% and average error symbol rate by 13.09%.