Function aes_sub_shift_kernel 

pub fn aes_sub_shift_kernel(state: [b8; 16]) -> [b8; 16]

First half of an AESENC round, with conventional AES column-major bytes.

SubBytes then ShiftRows on one 16-byte AES lane: 16 S-boxes, and wiring. Combinational; the pipeline puts a register after it.