Constant-Time Memory Comparison

[BillyBobJoe]

Hi,

I am looking for a constant-time memory comparison is a function that compares memory for equality in a fixed amount of time, regardless of the data's content. I am sure there is something is the encryption library but I am not able to find it.

Anyone with any advice/guidance?

Billy..

[BillyBobJoe]

I have found a number of methods to write one but I assume there must be already in the Zephyr RTOS. ie github.com/.../cst_time_memcmp