SoC SoC SOC HAVING DOUBLE SECURITY FEATURES AND DOUBLE SECURITY METHOD FOR SOC

摘要

SoC having a double security feature of the invention, according to the CPU for executing the program code, Boot ROM to store a boot code used to boot by the CPU when power is applied to the SoC that includes therein, a hash algorithm verified that the hash data generated from the program code that when a flash memory that is generated is encrypted by the encryption key, the signature key is stored at the time of SoC manufactured with the program code, a secure boot, the program code has not been tampered is provided with a secure engine, the secure engine only to be controlled to allow the booting by the CPU when, by the hash algorithm, a hash algorithm for generating the current hash data from the program code stored in the flash memory processing block and the decoding Key stored in the flash memory After generating the signature key decrypted by cognitive hit decode the key, characterized in yirueojim by the said current hash data with the decrypted signature keys including the signature verification processing block to verify that the non wherein the program code modulated in the same case do.