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Newbie
Newbie
1,349 Views
Registered: ‎08-04-2017

prohibit chipscope download

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Hi!

 

My problem is i wish to use a board where UART and JTAG are on the same USB cable. I would like to create a security applicaton, and store a hardwired key in the FPGA. My question is if it is theoretically possible to read this key from the FPGA by downloading Chipscope through partial reconfiguration? And if i can prohibit that anyhow, like encrypting the bitstream, or in worst case i just cut the JTAG wire on the board when finished?

 

Thanx for the answer in advance!

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Voyager
Voyager
2,258 Views
Registered: ‎06-24-2013

Re: prohibit chipscope download

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Hey @feketebv

 

Check out XAPP1084, specifically the section starting at page 9 about disabling JTAG.

 

Hope this helps,

Herbert

-------------- Yes, I do this for fun!

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Voyager
Voyager
2,259 Views
Registered: ‎06-24-2013

Re: prohibit chipscope download

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Hey @feketebv

 

Check out XAPP1084, specifically the section starting at page 9 about disabling JTAG.

 

Hope this helps,

Herbert

-------------- Yes, I do this for fun!

View solution in original post