/************************************************* * S2K Header File * * (C) 1999-2007 Jack Lloyd * *************************************************/ #ifndef BOTAN_S2K_H__ #define BOTAN_S2K_H__ #include <botan/symkey.h> #include <botan/rng.h> namespace Botan { /************************************************* * S2K Interface * *************************************************/ class BOTAN_DLL S2K { public: virtual S2K* clone() const = 0; virtual std::string name() const = 0; virtual void clear() {} OctetString derive_key(u32bit, const std::string&) const; void set_iterations(u32bit); void change_salt(const byte[], u32bit); void change_salt(const MemoryRegion<byte>&); void new_random_salt(RandomNumberGenerator& rng, u32bit); u32bit iterations() const { return iter; } SecureVector<byte> current_salt() const { return salt; } S2K() { iter = 0; } virtual ~S2K() {} private: virtual OctetString derive(u32bit, const std::string&, const byte[], u32bit, u32bit) const = 0; SecureVector<byte> salt; u32bit iter; }; } #endif