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TDA4VM: Decryption over head while booting

Ahmed Wafaey
Prodigy 20 points

Part Number: TDA4VM

Hello , 

I want to know if the images for each core stored encrypted , what's the time overhead needed to decrypt the image within the BMGR context .

  • 0
    TI__Guru 66445 points

    HI Ahmed 

    Currently we don't have those number, but its also depend on the size of the image.

    In normal SDK boot flow with prebuild images  we don't encrypt any other images apart from TIFS on HS device 

    Regards
    Diwakar

  • 0
    Prodigy 20 points

    Hi Diwakar 

    Ok , let me understand more fro you is it something done by R5f or it will done by TIFS so it shouldn't put over head on the booting processor except waiting the decryption happend ,if so what's the rate that TIFS decrypt the image with it .

  • 0 in reply to Ahmed Wafaey
    TI__Guru 66445 points

    Hi Ahmed 

    Ahmed Wafaey said:
    Ok , let me understand more fro you is it something done by R5f or it will done by TIFS so it shouldn't put over head on the booting processor except waiting the decryption happend

    Authentication and the Decryption is done by the TIFS using hardware crypto accelerator during booting.

    Currently we don't have a number for the decryption but it depends on the size of the encrypted image larger the image size more is the time to decrypt the image.

    Regards
    Diwakar