SoC system and real-time encryption and decryption method based on PRINCE algorithm

The invention discloses an SoC system and a real-time encryption and decryption method based on a PRINCE algorithm, the SoC system comprises a kernel, a bus, a peripheral bus module and an external memory, the peripheral bus module carries out real-time encryption and decryption on important programs and data in the process that the kernel executes user software; and the external memory is used as a peripheral of the kernel, is accessed through a peripheral bus and is used for storing important programs and data subjected to encryption processing. According to the SoC system and the real-time encryption and decryption method, the 64-bit PRINCE algorithm is applied to an embedded system with the bus width of 32 bits, real-time data encryption and decryption of an external memory are achieved, the encryption and decryption process does not need software intervention and is automatically completed by hardware, the real-time requirement is well met, and the real-time performance of the system is improved. A data