Botan::McEliece_PublicKeyInternal Class Reference

#include <mce_internal.h>

Public Member Functions
size_t	code_length () const
	McEliece_PublicKeyInternal (std::vector< uint8_t > public_matrix, size_t t, size_t code_length)
size_t	message_word_bit_length () const
const std::vector< uint8_t > &	public_matrix () const
secure_vector< uint8_t >	random_plaintext_element (RandomNumberGenerator &rng) const
size_t	t () const

Detailed Description

Definition at line 34 of file mce_internal.h.

Constructor & Destructor Documentation

McEliece_PublicKeyInternal()

Botan::McEliece_PublicKeyInternal::McEliece_PublicKeyInternal ( std::vector< uint8_t > public_matrix, size_t t, size_t code_length )

inline

Definition at line 36 of file mce_internal.h.

                                                                                                 :
            m_public_matrix(std::move(public_matrix)), m_t(t), m_code_length(code_length) {}

References code_length(), public_matrix(), and t().

Member Function Documentation

code_length()

size_t Botan::McEliece_PublicKeyInternal::code_length ( ) const

inline

Definition at line 43 of file mce_internal.h.

{ return m_code_length; }

Referenced by Botan::mceliece_encrypt(), and McEliece_PublicKeyInternal().

message_word_bit_length()

size_t Botan::McEliece_PublicKeyInternal::message_word_bit_length

(

)

const

Definition at line 253 of file mceliece_key.cpp.

                                                                 {
   const size_t codimension = ceil_log2(m_code_length) * m_t;
   return m_code_length - codimension;
}

References Botan::ceil_log2().

Referenced by random_plaintext_element().

public_matrix()

const std::vector< uint8_t > & Botan::McEliece_PublicKeyInternal::public_matrix ( ) const

inline

Definition at line 39 of file mce_internal.h.

{ return m_public_matrix; }

Referenced by Botan::mceliece_encrypt(), and McEliece_PublicKeyInternal().

random_plaintext_element()

secure_vector< uint8_t > Botan::McEliece_PublicKeyInternal::random_plaintext_element

(

RandomNumberGenerator &

rng

)

const

Definition at line 258 of file mceliece_key.cpp.

                                                                                                            {
   const size_t bits = message_word_bit_length();
 
   secure_vector<uint8_t> plaintext((bits + 7) / 8);
   rng.randomize(plaintext.data(), plaintext.size());
 
   // unset unused bits in the last plaintext byte
   if(const uint32_t used = bits % 8) {
      const uint8_t mask = (1 << used) - 1;
      plaintext[plaintext.size() - 1] &= mask;
   }
 
   return plaintext;
}

References message_word_bit_length(), and Botan::RandomNumberGenerator::randomize().

t()

size_t Botan::McEliece_PublicKeyInternal::t ( ) const

inline

Definition at line 41 of file mce_internal.h.

{ return m_t; }

Referenced by Botan::mceliece_encrypt(), and McEliece_PublicKeyInternal().

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

• src/lib/pubkey/mce/mce_internal.h
• src/lib/pubkey/mce/mceliece_key.cpp