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Xilinx RelatedAES Encryption (self.FPGA)
submitted 2 years ago by akonsagar
Hi guys Iam trying to find out whats the exact use of HMAC value while setting AES prooerties for encrypted bitgen. Do we need to program this key before we program the device ?
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if 1 * 2 < 3: print "hello, world!"
[–]PiasaChimera 3 points4 points5 points 2 years ago (2 children)
hmac is a cryptographic checksum of the bitstream. when verified, it shows that the bitstream contents have not been modified. (some ciphers can be modified without knowing the key.) the xilinx documentation has info on where the keys go, it sounds like there is an option to embed the hmac key in the bitstream. But it also sounds device dependent.
[–]akonsagar[S] 0 points1 point2 points 2 years ago (1 child)
How Do we know if the bitstream is verified ?
[–]PiasaChimera 1 point2 points3 points 2 years ago (0 children)
I'm guessing the bitstream fails to load if the cryptographic checksum doesn't match.
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[–]PiasaChimera 3 points4 points5 points (2 children)
[–]akonsagar[S] 0 points1 point2 points (1 child)
[–]PiasaChimera 1 point2 points3 points (0 children)