Zbkx Extension
Versions
- 1.0.0
-
- State
-
ratified
- Ratification date
-
== Synopsis
Adds instructions to implement a "lookup table" for 4 and 8 bit elements inside the general purpose registers.
These instructions are useful for expressing N-bit to N-bit boolean operations, and implementing cryptographic code with secret dependent memory accesses (particularly SBoxes) such that the execution latency does not depend on the (secret) data being operated on.