def cr.cts.b.go
import bend-osdev-crypto@0.1.0.0/cts.bend as Ctsimport Base
import bend-osdev-bytes@0.1.0.0/bytes.bend as B
25# a block of bytes encrypted or decrypted (f is the cipher's enc or dec)
26def cr.cts.b.go(~K: Data, ~Blk: Data, ~f: K -> Blk -> Blk, ~blk_to: Blk -> B.Octets, +k: K, x: Maybe<&2, Blk>, +o: B.Octets) -> B.Octets:
27 match x:
28 case None{}:
29 o
30 case Some{b}:
31 blk_to(f(k, b))