Encryption of whole file stored in external flash memory.

[sne_333]

Hi All, 

           I am using NRF52840 with an external SPI NOR flash connected to it. I am also mounting file system on the flash memory. Inside the flash I will be creating files (csv/txt ) format and store some raw data in it. We want to encrypt the data of the file. I am planning to use AES- CBC with padding. Instead of encrypting the data row by row, is it possible to encrypt whole file in a single shot??

Thanks & Regards,

Snehal 

[Einar Thorsrud]

Hi Snehal,

There are no support for encrypted file systems in the SDK, unfortunately. You would have too look into how to achieve that yourself, or encrypt just the data as you originally planned.

Einar