Botan::Kyber_Modern_Symmetric_Primitives Class Reference

#include <kyber_modern.h>

Inheritance diagram for Botan::Kyber_Modern_Symmetric_Primitives:

Public Member Functions
std::unique_ptr< HashFunction >	G () const override
std::unique_ptr< HashFunction >	H () const override
std::unique_ptr< HashFunction >	KDF () const override
	Kyber_Modern_Symmetric_Primitives ()
secure_vector< uint8_t >	PRF (std::span< const uint8_t > seed, const uint8_t nonce, const size_t outlen) const override
Botan::XOF &	XOF (std::span< const uint8_t > seed, std::tuple< uint8_t, uint8_t > matrix_position) const override

Detailed Description

Definition at line 24 of file kyber_modern.h.

Constructor & Destructor Documentation

Kyber_Modern_Symmetric_Primitives()

Botan::Kyber_Modern_Symmetric_Primitives::Kyber_Modern_Symmetric_Primitives ( )

inline

Definition at line 26 of file kyber_modern.h.

                                          :
            m_sha3_512(HashFunction::create_or_throw("SHA-3(512)")),
            m_sha3_256(HashFunction::create_or_throw("SHA-3(256)")),
            m_shake256_256(HashFunction::create_or_throw("SHAKE-256(256)")),
            m_shake128(Botan::XOF::create_or_throw("SHAKE-128")) {}

Member Function Documentation

G()

std::unique_ptr< HashFunction > Botan::Kyber_Modern_Symmetric_Primitives::G ( ) const

inlineoverridevirtual

Implements Botan::Kyber_Symmetric_Primitives.

Definition at line 32 of file kyber_modern.h.

{ return m_sha3_512->new_object(); }

H()

std::unique_ptr< HashFunction > Botan::Kyber_Modern_Symmetric_Primitives::H ( ) const

inlineoverridevirtual

Implements Botan::Kyber_Symmetric_Primitives.

Definition at line 34 of file kyber_modern.h.

{ return m_sha3_256->new_object(); }

KDF()

std::unique_ptr< HashFunction > Botan::Kyber_Modern_Symmetric_Primitives::KDF ( ) const

inlineoverridevirtual

Implements Botan::Kyber_Symmetric_Primitives.

Definition at line 36 of file kyber_modern.h.

{ return m_shake256_256->new_object(); }

PRF()

secure_vector< uint8_t > Botan::Kyber_Modern_Symmetric_Primitives::PRF ( std::span< const uint8_t > seed, const uint8_t nonce, const size_t outlen ) const

inlineoverridevirtual

Implements Botan::Kyber_Symmetric_Primitives.

Definition at line 48 of file kyber_modern.h.

                                                                     {
         SHAKE_256 kdf(outlen * 8);
         kdf.update(seed.data(), seed.size());
         kdf.update(nonce);
         return kdf.final();
      }

References Botan::Buffered_Computation::final(), and Botan::Buffered_Computation::update().

XOF()

Botan::XOF & Botan::Kyber_Modern_Symmetric_Primitives::XOF ( std::span< const uint8_t > seed, std::tuple< uint8_t, uint8_t > matrix_position ) const

inlineoverridevirtual

Implements Botan::Kyber_Symmetric_Primitives.

Definition at line 38 of file kyber_modern.h.

                                                                                                            {
         m_shake128->clear();
         m_shake128->update(seed);
 
         const std::array<uint8_t, 2> matrix_position_buffer{std::get<0>(matrix_position),
                                                             std::get<1>(matrix_position)};
         m_shake128->update(matrix_position_buffer);
         return *m_shake128;
      }

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

• src/lib/pubkey/kyber/kyber/kyber_modern.h