topic Re: LP5528 AES support in LPC Microcontrollers

LP5528 AES support

bressan — Tue, 24 May 2022 15:07:37 GMT

UM11126 chapter 1.1 says: ".. the LPC55S6x/LPC55S2x/LPC552x
also offers support for HASH, AES, RSA, ..:"

In chapter 1.2 is written: "AES-256 encryption/decryption engine with keys fed directly from PUF or a
software supplied key (not available on LPC552x) "

Does this mean, there is a restricted AES support? Or is chapter 1.1 wrong?

With LPC55S28.h I can build with fsl_hashcrypt.c

For LPC55S28 the "HASHCRYPT.." are defined in LPC55S28.h

For LPC5528 a lot of "HASHCRYPT..." defines are missing in file LPC5528.h, so fsl_hashcrypt.c can't be build.

fsl_hashcrypt.c is Copyright 2017-2020 NXP. No other Version information found in file.
LPC5528.h is rev. 1.1, 2019-05-16

Is there a new version or a patch for LPC5528.h or fsl_hashcrypt.c?

Re: LP5528 AES support

xiangjun_rong — Wed, 25 May 2022 02:09:04 GMT

Hi,

Pls refer to section 3.1 Ordering options in data sheet of LPC55S28/LPC5528, which can be downloaded from the link:

https://www.nxp.com.cn/docs/en/nxp/data-sheets/LPC55S2x_LPC552x_DS.pdf

Unfortunately, the LPC5528 does not have Hash/AES module, so the corresponding lpc5528.h does not include the hash and aes items.

Hope it can help you

XiangJun Rong

Re: LP5528 AES support

bressan — Wed, 25 May 2022 07:22:05 GMT

Thanks.

Can you forward this information to the writers of the datasheet, to fix the chapter 1.1?

UM11126 chapter 1.1 says: ".. the LPC55S6x/LPC55S2x/LPC552x"

Have a successful day!

Bernhard