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SHA-1 and AES-128 on CC2541

John Munroe
Intellectual 760 points
Other Parts Discussed in Thread: CC2541, AES-128, CC2540, CC2640

Hi

I'm hoping to use AES crypto to encrypt some small payload (a 64 char string) on CC2541. Does anyone know if this could potentially interfere with BLE communications? Does the AES-128 module keep the crypto workload separate in its own bubble?

Also, for SHA-1, could the CC2541/8051 actually cope (without interfering BLE communications)? Info on this subject (even encryption on CC2540/1 in general) is of very short supply, to say the least.

Does anyone know if there's any related benchmark available?

Thanks

  • 0
    TI__Guru** 105180 points
    Hello John,

    For AES on CC254x, you can use the HCI LE Encrypt command to encrypt a plaintext data packet.

    For SHA-1, I'm not aware of any benchmarks, but you will need to allow for sufficient time for the RF/Stack to run. If compute resources are a concern, I would suggest using the CC2640 which has a Cortex-M3 application processor.

    Best wishes