8 #ifndef BOTAN_KEYED_FILTER_H__
9 #define BOTAN_KEYED_FILTER_H__
11 #include <botan/filter.h>
12 #include <botan/sym_algo.h>
41 virtual bool valid_keylength(
size_t length)
const = 0;
49 {
return (length == 0); }
virtual bool valid_iv_length(size_t length) const