RISC-V ISA Explorer · Cryptography (Zk*)

Zbkc: Crypto Bitmanip (carryless)

Ratified 2022-02 · version 1.0.1

Carry-less multiplication over GF(2) polynomials, the core operation behind AES-GCM's GHASH.

Typical use: Carryless ops for crypto

Specification

Open Zbkc in the explorer

Dependencies

Required by

Instructions (2)

MnemonicNameEncodingMatchMask
CLMULCarry-less multiply (low-part)0000101----------001-----01100110xa0010330xfe00707f
CLMULHCarry-less multiply (high-part)0000101----------011-----01100110xa0030330xfe00707f