def s_key
import bend-collections@1.0.0.0/src/crypto/poly1305/poly1305.bend as Poly1305import Base
import bend-collections@1.0.0.0/src/crypto/poly1305/limbs.bend as L
57def s_key(+key: List<&2, U32>) -> List<&2, U32>:
58 mask(L.take(16n, L.skip(16n, key)))