Botan::MerkleDamgard_Hash< MD > Class Template Reference

#include <mdx_hash.h>

Public Member Functions
void	clear ()
void	final (std::span< uint8_t > output)
	MerkleDamgard_Hash ()
void	update (std::span< const uint8_t > input)

Detailed Description

template<md_hash_implementation MD>
class Botan::MerkleDamgard_Hash< MD >

Definition at line 40 of file mdx_hash.h.

Constructor & Destructor Documentation

MerkleDamgard_Hash()

template<md_hash_implementation MD>

Botan::MerkleDamgard_Hash< MD >::MerkleDamgard_Hash ( )

inline

Definition at line 42 of file mdx_hash.h.

{ clear(); }

References Botan::MerkleDamgard_Hash< MD >::clear().

Member Function Documentation

clear()

template<md_hash_implementation MD>

void Botan::MerkleDamgard_Hash< MD >::clear ( )

inline

Definition at line 70 of file mdx_hash.h.

                   {
         MD::init(m_digest);
         m_buffer.clear();
         m_count = 0;
      }

References Botan::AlignmentBuffer< T, BLOCK_SIZE, FINAL_BLOCK_STRATEGY >::clear().

Referenced by Botan::MerkleDamgard_Hash< MD >::final(), and Botan::MerkleDamgard_Hash< MD >::MerkleDamgard_Hash().

final()

template<md_hash_implementation MD>

void Botan::MerkleDamgard_Hash< MD >::final ( std::span< uint8_t > output )

inline

Definition at line 63 of file mdx_hash.h.

                                          {
         append_padding_bit();
         append_counter_and_finalize();
         copy_output(output);
         clear();
      }

References Botan::MerkleDamgard_Hash< MD >::clear().

update()

template<md_hash_implementation MD>

void Botan::MerkleDamgard_Hash< MD >::update ( std::span< const uint8_t > input )

inline

Definition at line 44 of file mdx_hash.h.

                                                {
         BufferSlicer in(input);
 
         while(!in.empty()) {
            if(const auto one_block = m_buffer.handle_unaligned_data(in)) {
               MD::compress_n(m_digest, one_block.value(), 1);
            }
 
            if(m_buffer.in_alignment()) {
               const auto [aligned_data, full_blocks] = m_buffer.aligned_data_to_process(in);
               if(full_blocks > 0) {
                  MD::compress_n(m_digest, aligned_data, full_blocks);
               }
            }
         }
 
         m_count += input.size();
      }

References Botan::AlignmentBuffer< T, BLOCK_SIZE, FINAL_BLOCK_STRATEGY >::aligned_data_to_process(), Botan::BufferSlicer::empty(), Botan::AlignmentBuffer< T, BLOCK_SIZE, FINAL_BLOCK_STRATEGY >::handle_unaligned_data(), and Botan::AlignmentBuffer< T, BLOCK_SIZE, FINAL_BLOCK_STRATEGY >::in_alignment().

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The documentation for this class was generated from the following file:

• src/lib/hash/mdx_hash/mdx_hash.h