ripple::hardened_hash< HashAlgorithm > Class Template Reference

Seed functor once per construction. More...

#include <hardened_hash.h>

Inheritance diagram for ripple::hardened_hash< HashAlgorithm >:

Collaboration diagram for ripple::hardened_hash< HashAlgorithm >:

Public Types
using	result_type = typename HashAlgorithm::result_type

Public Member Functions
	hardened_hash ()
template<class T >
result_type	operator() (T const &t) const noexcept

Private Attributes
detail::seed_pair	m_seeds

Detailed Description

template<class HashAlgorithm = beast::xxhasher>
class ripple::hardened_hash< HashAlgorithm >

Seed functor once per construction.

A std compatible hash adapter that resists adversarial inputs. For this to work, T must implement in its own namespace:

template <class Hasher>
void
hash_append (Hasher& h, T const& t) noexcept
{
    // hash_append each base and member that should
    //  participate in forming the hash
    using beast::hash_append;
    hash_append (h, static_cast<T::base1 const&>(t));
    hash_append (h, static_cast<T::base2 const&>(t));
    // ...
    hash_append (h, t.member1);
    hash_append (h, t.member2);
    // ...
}

Do not use any version of Murmur or CityHash for the Hasher template parameter (the hashing algorithm). For details see https://131002.net/siphash/#at

Definition at line 92 of file hardened_hash.h.

Member Typedef Documentation

result_type

template<class HashAlgorithm = beast::xxhasher>

using ripple::hardened_hash< HashAlgorithm >::result_type = typename HashAlgorithm::result_type

Definition at line 98 of file hardened_hash.h.

Constructor & Destructor Documentation

hardened_hash()

template<class HashAlgorithm = beast::xxhasher>

ripple::hardened_hash< HashAlgorithm >::hardened_hash

(

)

Definition at line 100 of file hardened_hash.h.

Member Function Documentation

operator()()

template<class HashAlgorithm = beast::xxhasher>

template<class T >

result_type ripple::hardened_hash< HashAlgorithm >::operator() ( T const &  t ) const

noexcept

Definition at line 106 of file hardened_hash.h.

Member Data Documentation

m_seeds

template<class HashAlgorithm = beast::xxhasher>

detail::seed_pair ripple::hardened_hash< HashAlgorithm >::m_seeds

private

Definition at line 95 of file hardened_hash.h.