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/*
* SipHash
* (C) 2014,2015 Jack Lloyd
*
* Botan is released under the Simplified BSD License (see license.txt)
*/
#ifndef BOTAN_SIPHASH_H_
#define BOTAN_SIPHASH_H_
#include <botan/mac.h>
BOTAN_FUTURE_INTERNAL_HEADER(siphash.h)
namespace Botan {
class BOTAN_PUBLIC_API(2,0) SipHash final : public MessageAuthenticationCode
{
public:
SipHash(size_t c = 2, size_t d = 4) : m_C(c), m_D(d) {}
void clear() override;
std::string name() const override;
MessageAuthenticationCode* clone() const override;
size_t output_length() const override { return 8; }
Key_Length_Specification key_spec() const override
{
return Key_Length_Specification(16);
}
private:
void add_data(const uint8_t[], size_t) override;
void final_result(uint8_t[]) override;
void key_schedule(const uint8_t[], size_t) override;
const size_t m_C, m_D;
secure_vector<uint64_t> m_V;
uint64_t m_mbuf = 0;
size_t m_mbuf_pos = 0;
uint8_t m_words = 0;
};
}
#endif
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