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RT1020 Bus Encryption Engine

Question asked by rshipman on Feb 5, 2020
Latest reply on Feb 10, 2020 by Victor Jimenez



Does the Bus Encryption Engine encrypt as well as decrypt?


For example, if I was running an Encrypted XIP application (from serial nor flash), and I wanted it to write something to a different area of flash, what happens? Is it encrypted when writing, and decrypted when reading? Or are all read/writes to flash in plaintext, and only reads of the bootable image decrypted on the fly?


Many thanks.