aes64im
AES Decrypt KeySchedule MixColumns
Synopsis
This instruction must have data-independent timing when extension Zkt is enabled. |
The instruction applies the inverse MixColumns transformation to two columns of the state array, packed into a single 64-bit register. It is used to create the inverse cipher KeySchedule, according to the equivalent inverse cipher construction in (NIST, 2001) (Page 23, Section 5.3.5).