i.MX RT Crossover MCUs中的主题 Re: RT116x/7x Inline Encryption Engine performance with SDRAM

RT116x/7x Inline Encryption Engine performance with SDRAM

stephenschwartz — Wed, 15 Jun 2022 13:55:34 GMT

Hello,

I have read in the Security Reference Manual for the i.MXRT1170 how the IEE peripheral can be used to decrypt data from SDRAM without software intervention. Is it possible to use the IEE to decrypt code that is executing from SDRAM? If so, is there any latency added by using the IEE?

Thanks,

Steve Schwartz-Fenwick

Re: RT116x/7x Inline Encryption Engine performance with SDRAM

Omar_Anguiano — Wed, 22 Jun 2022 21:09:56 GMT

Hello
Hope you are well.

IEE can be used when you have an encrypted XIP(execute in place) image booting from FlexSPI.
In SDRAM the IEE module can be used to encrypt/decrypt data.

If you have more questions do not hesitate to ask me.
Best regards,
Omar