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/*
* KDF2
* (C) 1999-2007 Jack Lloyd
*
* Botan is released under the Simplified BSD License (see license.txt)
*/
#ifndef BOTAN_KDF2_H__
#define BOTAN_KDF2_H__
#include <botan/kdf.h>
#include <botan/hash.h>
namespace Botan {
/**
* KDF2, from IEEE 1363
*/
class BOTAN_DLL KDF2 final : public KDF
{
public:
std::string name() const override { return "KDF2(" + m_hash->name() + ")"; }
KDF* clone() const override { return new KDF2(m_hash->clone()); }
size_t kdf(byte key[], size_t key_len,
const byte secret[], size_t secret_len,
const byte salt[], size_t salt_len,
const byte label[], size_t label_len) const override;
/**
* @param h underlying hash function
*/
explicit KDF2(HashFunction* h) : m_hash(h) {}
private:
std::unique_ptr<HashFunction> m_hash;
};
}
#endif
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