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authorPaul Selkirk <paul@psgd.org>2020-03-25 13:14:15 -0400
committerPaul Selkirk <paul@psgd.org>2020-03-25 13:14:15 -0400
commit4333178c6a8f467ddacc13ddae0bed588b6bdcf3 (patch)
tree1d1cb71086366b862053efa2df536773fd5c29ef /README.md
parent7d0ab8d8fc7c56d4256df55ab46681740b350ab6 (diff)
Move keywrap from user/js to core/util.
Also remove the auto_zeroise code, since that's behaving badly, and it's not used anyway in the integrate_mkmif branch.
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chapter 2.2.2 of RFC 3394.)
-### Auto Zeroise
-The core implements an auto zeroise functionality for secret key. This
-means that any loaded wrapping key will automatically be wiped from all
-registers storing key information after a specified timeout. Timeout
-countdown is halted when the core is performing any wrap/unwrap operation,
-and the timeout is reset to its defined start value after an operation
-has been completed.
-
-SW can set the timout value (in cycles), SW can also inspect the key
-status and timeout status. Reading status also triggers a reset of the
-timeout counter. This allows SW to keep a loaded key alive by simply
-checking status. Finally SW can actively trigger a key zeroisation
-operation.
-
-
## Implementation results
The core has been implemented for Xilinx Artix7-t200 using ISE with the
following results: