def tag
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
60def tag(+key: List<&2, U32>, +msg: List<&2, U32>) -> List<&2, U32>:
61 +r = r_key(key)
62 +s = s_key(key)
63 +h = absorb(List.length(&2, U32, msg), msg, r, zero())
64 L.fin(h, s)