RAM Memory optimization for Crypto libraries.

[Srinivas V]

Hi Team,

We are using the NRF52832 for our application and we have enabled the crypto libraries for that.

For, 

    1. AES-ECB,CFG,CBC modules we are using the "mbed TLS " soft library.

    2. ECC functionalities we are using the "micro-ECC" library.

    3. RNG functionalities we have enabled the HW engine some times from CC310(nRF52840).

Once we enabled all of these libraries which are mentioned in above, RAM size is increased a lot , is there any way or procedures to optimize the RAM size with out impacting the crypto functionalities.

Regards,

Srinivas.V

[Vidar Berg]

Hi,

Did you consider using the nRF RNG instead of the RNG in cc310? I would expect some reduction in both RAM and FLASH usage if you can avoid having to link in the cc310 runtime library.

Regards,

Vidar

[Srinivas V]

Hi Vidar,

Currently we are using the nRF RNG only not cc310. We are not using CC310 Library, using the mbed TLS for our cypto functionalities.

You have any mechanism for this how to reduce RAM and Flash, could you please share to us, based on that we will do the modifications.

Regards,

Srinivas.V