AES feature in STM32F733ZE

[Hau Lam]

Posted on April 02, 2018 at 08:32

I'm going to using AES feature in STM32F733ZE  but the the datasheet doesn't have much information regarding AES .

Do you know how much speed of AES in the 

STM32F733ZE  ?

And do we have any any demonstration evaluation kit which use AES feature in STM32F733ZE  ?

[Tesla DeLorean]

Posted on April 02, 2018 at 14:30

Last time I looked the CRYP/HASH units were clocked at 48 MHz

You'd likely want to use the

http://www.st.com/en/evaluation-tools/stm32756g-eval.html

 

Cross-posting

https://community.st.com/0D50X00009Xki9WSAR

 

[Hau Lam]

Posted on April 02, 2018 at 16:23

Turvey.Clive.002

‌ : Thanks for your information. Can we calculate it base on MB/s ?

[Tesla DeLorean]

Posted on April 02, 2018 at 17:29

One could certainly benchmark throughput in those terms, in a sustained sense the limitation is likely to be your ability to deliver data to the unit, and dispatch it some place else (network, sd card, etc..)

[Hau Lam]

Posted on April 02, 2018 at 17:55

Turvey.Clive.002

‌ : If i want to store the data in SD Card, so far do we have any method to estimate that speed ?

[Tesla DeLorean]

Posted on April 02, 2018 at 18:41

These things have many variables, different makes/models vary widely in write speed. You also have to work with large blocks of data to be efficient. The ceiling for an SDCard clocked at 24 MHz in 4-bit mode is 12 MBps, 8-10 MBps being achievable with high quality cards.

The F7 has a core cycle accurate counter for benchmarking.

There would be significant time/cost in generating actual numbers from a system using AES/SDMMC concurrently.

[Hau Lam]

Posted on April 04, 2018 at 10:57

Turvey.Clive.002

‌ :Wheredo we know the AES clock is 48 MHz, because from the Spec of STM32733 it said that the clock is 216Mhz. Actually I don't really understand bot these clocks .

Could you explain for me . Thank you very much and appreciate for ur information .

[Tesla DeLorean]

Posted on April 04, 2018 at 15:09

Most STM32 use a 48 MHz clock for USB, RNG, HASH, CRYP units.

Looking over RM0431 the AES uses aes_hclk, so 216 MHz should be workable.