4 ms·
My memory is failing me... Is the scalar cryptography extension include the one that has the bitwise manipulation (rotations, etc) or is it that a separate spec
by ufo 5y ago
My memory is failing me... Is the scalar cryptography extension include the one that has the bitwise manipulation (rotations, etc) or is it that a separate spec?
- bem94 5y agoThere is some overlap. There's the "Zbkb" (horrible name, I know) extension which contains a subset of instructions from the larger bitmanip extensions which are very useful for cryptography. The more general bitmanip extensions contain other things useful for e.g. address arithmetic. These are somewhat orthogonal to scalar crypto.
- Pet_Ant 5y agoYoe maybe interested in the just ratified "RISC-V Bit-Manipulation ISA-extensions" https://github.com/riscv/riscv-bitmanip/releases/download/1.0.0/bitmanip-1.0.0-38-g865e7a7.pdf https://github.com/riscv/riscv-bitmanip/releases/download/1....