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AES256 benchmarks without accelerator

David M. Alter
Guru 61235 points


TI MSP Team,

We have the HW AES256 accelerator in a number of MSP430 devices, for example FR6989.  The user's guide SLAU367L, section 14.2 provides benchmark information for AES256 encryption and decryption using the accelerator.  Excellent.

QUESTION: Do we have MSP430 benchmarks for the encryption and decryption WITHOUT the accelerator?

Thank you,

David

  • 0
    TI__Guru 56685 points
    David,

    Without the AES accelerator you will have to use a SW version of the algorithm. We do not have a SW version of AES256 available, but we do have a SW version of AES128. Benchmarks for this SW code can be found int he following application note. http://www.ti.com/lit/slaa547

    Using the HW accelerator is highly encouraged when it is available as it speeds up the (d)encrypt process by a lot.
  • 0 in reply to Jace H
    Guru 34503 points

    Jace H said:
    Using the HW accelerator is highly encouraged when it is available as it speeds up the (d)encrypt process by a lot.

    It is faster and saves memory. But sometimes software implementation (on devices without hardware module) can be fast enough. For example my CDC BSL writing rate is 32 KByte/s with included software AES implementation.

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