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def sm4.t2

bend-osdev-legacy-ciphers@0.1.0.0 · sm4.bend:53

import bend-osdev-legacy-ciphers@0.1.0.0/sm4.bend as Sm4
import Base
import bend-osdev-legacy-ciphers@0.1.0.0/legacy_ciphers.bend as L

53# T' of the key schedule: L'(B) = B xor B<<<13 xor B<<<23
54def sm4.t2(+tab: L.LcTab, x: U32) -> U32:
55  +b = sm4.tau(tab, x)
56  U32.xor(U32.xor(b, L.lc.rotl(b, 13n)), L.lc.rotl(b, 23n))

Uses (5)

Used by (1)