Secure microprocessor with instructions verification

摘要

The microprocessor (MIC) has an interface (INT) with a program memory (MEM) comprising instructions. Each instruction is composed of an opcode and operands. An instruction verification module (VER) includes a reading module (FE) to read an additional verification information defining a check value permitting to validate or invalidate the opcode part of the instruction. An interrupting unit interrupts the execution of the instruction if the opcode assumed during reading is invalid.