12. Inv_fun_ctest_gfp

12.1. Function description:

This demo shows the operation of modular inversion in GF(p).

• Allocate enough memory space of SRAM used by internal logic during computation.

• Filling data to address of operand x, y for modular inversion, then configure & start modular inversion operation.

• Waiting process done to compare the result with the golden data to check.

12.2. Main Configuration:

12.2.1. INV operation:

Operation code	Option	Field	Operand x length	Operand y length
OP_INV	ordinary	GF(p)	6 words	6 words

Note

Operation code is OP_INV, the operand x is Gx, operand y is Gy, a = Gx^-1 mod Gy and b = Gy^-1 mod Gx.

12.3. Test result:

If the result is same as the standard data, then print pass, if not print fail.

12.4. IO connection:

None