def x25519_if
import bend-collections@1.0.0.0/src/crypto/curve25519/x25519.bend as X25519import Base
144def x25519_if(ok: Bool, k: List<&2, U32>, u: List<&2, U32>) -> Maybe<&2, List<&2, U32>>:
145 match ok:
146 case True{}:
147 Some{x25519_raw(k, u)}
148 case False{}:
149 None{}