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embeded encription devices for secure updates

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  • Charles Leo
    replied
    Yes. If unencrypted data is transferred via SPI (or I2C), it is relatively easy to intercept.

    I can only follow so far and it seems you're way ahead of me.

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  • longpole001
    replied
    Try to follow.its going work for updates to both a external flash and more important CPU code space , cos no encryption chip can't hold the entire pic code , and if I monitored caputured the spi bus I would have a complete copy of the decripted code anyway ???

    Leave a comment:


  • Charles Leo
    replied
    I haven't encountered anyone using a device like this. I've used a similar method (if I'm understanding this correctly) that involved encrypted files on an SD card.

    Leave a comment:


  • longpole001
    started a topic embeded encription devices for secure updates

    embeded encription devices for secure updates

    Hi charles , have you or any one else used an external IC
    ATAES132A to protect and update the firmware of 18F chip


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