Integrated circuit for performing confidential transaction, has central processing unit, random access memory and read only memory that are connected by data bus that routes encrypted data produced from plain data

摘要

The circuit has a central processing unit (CPU), a random access memory (RAM) and a read only memory (ROM) connected by a data bus that routes encrypted data. Each one of the CPU, RAM and ROM, has a dynamic encryption interface for producing the encrypted data from plain data. Each one of the CPU and RAM has dynamic decryption interface that are complementary to the encryption interfaces of the CPU and RAM.