/************************************************* * Basic Filters Source File * * (C) 1999-2007 The Botan Project * *************************************************/ #include namespace Botan { /************************************************* * Chain Constructor * *************************************************/ Chain::Chain(Filter* f1, Filter* f2, Filter* f3, Filter* f4) { if(f1) { attach(f1); incr_owns(); } if(f2) { attach(f2); incr_owns(); } if(f3) { attach(f3); incr_owns(); } if(f4) { attach(f4); incr_owns(); } } /************************************************* * Chain Constructor * *************************************************/ Chain::Chain(Filter* filters[], u32bit count) { for(u32bit j = 0; j != count; ++j) if(filters[j]) { attach(filters[j]); incr_owns(); } } /************************************************* * Fork Constructor * *************************************************/ Fork::Fork(Filter* f1, Filter* f2, Filter* f3, Filter* f4) { Filter* filters[4] = { f1, f2, f3, f4 }; set_next(filters, 4); } /************************************************* * Fork Constructor * *************************************************/ Fork::Fork(Filter* filters[], u32bit count) { set_next(filters, count); } /************************************************* * Set the algorithm key * *************************************************/ void Keyed_Filter::set_key(const SymmetricKey& key) { if(base_ptr) base_ptr->set_key(key); else throw Invalid_State("Keyed_Filter::set_key: No base algorithm set"); } /************************************************* * Check if a keylength is valid * *************************************************/ bool Keyed_Filter::valid_keylength(u32bit n) const { if(base_ptr) return base_ptr->valid_keylength(n); throw Invalid_State("Keyed_Filter::valid_keylength: No base algorithm set"); } }