sd_ecb_block_encrypt Results in HardFault

[Marciano-PL]

I'm attempting to send a time sync message in a mesh packet. When I construct the packet during it's timeslot (for timing determinism) the system faults during encryption. When I perform the same system calls outside of a timeslot there is no issue. How can I still send my time sync messages reliably, and still be able to encrypt them?

Setup
nRF52840-DK
SDK v16.0.0
Mesh v4.0.0
S140 v7.0.1

Location
Utah

[Marciano-PL]

[ ] Option 2: Using CC310 AEAD CCM

Since the CCM peripheral doesn't support 64 bit MAC/MIC, and the Softdevice S140 restricts ECB during timeslots, and the CC310 is open during softdevice activity, it looks like this is the route to take. I will update with progress as I go forward.

[Marciano-PL]

This proved to be the most effective method and I am now sending sync packets as I wish. To obfuscate the net header, CC310 AES ECB must be used also.