`sig
module Cryptsystem : Cryptsystem_64.T
module Cryptmodes :
sig
type key = Cryptsystem.key
val encrypt_cbc :
key ->
int * int * int * int -> string -> (int * int * int * int) * string
val decrypt_cbc :
key ->
int * int * int * int -> string -> (int * int * int * int) * string
val encrypt_cfb8 :
key ->
int * int * int * int -> string -> (int * int * int * int) * string
val decrypt_cfb8 :
key ->
int * int * int * int -> string -> (int * int * int * int) * string
val encrypt_cfb64 :
key ->
int * int * int * int ->
int -> string -> (int * int * int * int) * int * string
val decrypt_cfb64 :
key ->
int * int * int * int ->
int -> string -> (int * int * int * int) * int * string
val crypt_ofb :
key ->
int * int * int * int ->
int -> string -> (int * int * int * int) * int * string
end
val check_parity : string -> unit
val set_parity : string -> string
end`