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/*
This code is written by kerukuro and released into public domain.
*/
#ifndef DIGESTPP_MIXINS_KMAC_HPP
#define DIGESTPP_MIXINS_KMAC_HPP
namespace digestpp
{
namespace mixin
{
/**
* \brief Defines additional public functions for KMAC family of algorithms.
* \sa hasher, kmac128, kmac256, kmac128_xof, kmac256_xof
*/
template<typename T>
class kmac_mixin
{
public:
/**
* \brief Set key from std::string
*
* \param[in] key Key string
* \return Reference to hasher
*/
inline hasher<T, mixin::kmac_mixin>& set_key(const std::string& key)
{
auto& kmac = static_cast<hasher<T, mixin::kmac_mixin>&>(*this);
kmac.provider.set_key(key);
kmac.provider.init();
return kmac;
}
/**
* \brief Set key from raw buffer
*
* \param[in] key Pointer to key bytes
* \param[in] key_len Key length (in bytes)
* \return Reference to hasher
*/
template<typename C, typename std::enable_if<detail::is_byte<C>::value>::type* = nullptr>
inline hasher<T, mixin::kmac_mixin>& set_key(const C* key, size_t key_len)
{
return set_key(std::string(reinterpret_cast<const char*>(key), key_len));
}
/**
* \brief Set customization from std::string
*
* \param[in] customization Customization string
* \return Reference to hasher
*/
inline hasher<T, mixin::kmac_mixin>& set_customization(const std::string& customization)
{
auto& kmac = static_cast<hasher<T, mixin::kmac_mixin>&>(*this);
kmac.provider.set_customization(customization);
kmac.provider.init();
return kmac;
}
/**
* \brief Set customization from raw buffer
*
* \param[in] customization Pointer to customization bytes
* \param[in] customization_len Customization length (in bytes)
* \return Reference to hasher
*/
template<typename C, typename std::enable_if<detail::is_byte<C>::value>::type* = nullptr>
inline hasher<T, mixin::kmac_mixin>& set_customization(const C* customization, size_t customization_len)
{
return set_customization(std::string(reinterpret_cast<const char*>(customization), customization_len));
}
};
} // namespace mixin
} // namespace digestpp
#endif // DIGESTPP_MIXINS_KMAC_HPP
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