def c6.sa

bend-osdev-legacy-ciphers@0.1.0.0 · cast6.bend:47

import Base
import bend-osdev-cipher-modes@0.1.0.0/cipher_modes.bend as M
import bend-osdev-legacy-ciphers@0.1.0.0/cast5.bend as C5

47def c6.sa(k: LcCast6Ks, s: M.CmBlock) -> M.CmBlock:
48  match k:
49    case LcCast6Ks{m0, m1, m2, m3, r0, r1, r2, r3, t}:
50      match s:
51        case M.CmBlock{a, +b, c, d}:
52          M.CmBlock{U32.xor(a, C5.cast.f(C5.LcCastF3{}, t, b, m2, r2)), b, c, d}