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/*
This code is written by kerukuro and released into public domain.
*/
#ifndef DIGESTPP_MIXIN_SHAKE_HPP
#define DIGESTPP_MIXIN_SHAKE_HPP
namespace digestpp
{
namespace mixin
{
/**
* \brief Defines additional public functions for cSHAKE128 and cSHAKE256.
* \sa hasher, cshake128, cshake256
*/
template<typename T>
class cshake_mixin
{
public:
/**
* \brief Set NIST function name from std::string
*
* \param[in] function_name NIST function name string
* \return Reference to hasher
*/
inline hasher<T, mixin::cshake_mixin>& set_function_name(const std::string& function_name)
{
auto& shake = static_cast<hasher<T, mixin::cshake_mixin>&>(*this);
shake.provider.set_function_name(function_name);
shake.provider.init();
return shake;
}
/**
* \brief Set NIST function name from raw buffer
*
* \param[in] function_name Pointer to NIST function name bytes
* \param[in] function_name_len NIST function name 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::cshake_mixin>& set_function_name(const C* function_name, size_t function_name_len)
{
return set_function_name(std::string(reinterpret_cast<const char*>(function_name), function_name_len));
}
/**
* \brief Set customization from std::string
*
* \param[in] customization Customization string
* \return Reference to hasher
*/
inline hasher<T, mixin::cshake_mixin>& set_customization(const std::string& customization)
{
auto& shake = static_cast<hasher<T, mixin::cshake_mixin>&>(*this);
shake.provider.set_customization(customization);
shake.provider.init();
return shake;
}
/**
* \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::cshake_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_MIXIN_SHAKE_HPP
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