#include <kyber_modern.h>

Inheritance diagram for Botan::Kyber_Modern_Symmetric_Primitives:

Public Member Functions
std::pair< KyberSharedSecret, KyberEncryptionRandomness >	G (StrongSpan< const KyberMessage > msg, StrongSpan< const KyberHashedPublicKey > pubkey_hash) const
std::pair< KyberSeedRho, KyberSeedSigma >	G (StrongSpan< const KyberSeedRandomness > seed, const KyberConstants &mode) const
KyberHashedCiphertext	H (StrongSpan< const KyberCompressedCiphertext > r) const
KyberMessage	H (StrongSpan< const KyberMessage > m) const
KyberHashedPublicKey	H (StrongSpan< const KyberSerializedPublicKey > pk) const
KyberSharedSecret	J (StrongSpan< const KyberImplicitRejectionValue > rejection_value, StrongSpan< const KyberCompressedCiphertext > ciphertext) const
void	KDF (StrongSpan< KyberSharedSecret > out, StrongSpan< const KyberSharedSecret > shared_secret, StrongSpan< const KyberHashedCiphertext > hashed_ciphertext) const
KyberSamplingRandomness	PRF (KyberSigmaOrEncryptionRandomness seed, const uint8_t nonce, const size_t outlen) const
void	setup_PRF (std::unique_ptr< Botan::XOF > &xof, std::span< const uint8_t > seed, uint8_t nonce) const
	Setup a seeded PRF XOF for polynomial sampling.
void	setup_XOF (std::unique_ptr< Botan::XOF > &xof, StrongSpan< const KyberSeedRho > seed, std::tuple< uint8_t, uint8_t > matrix_position) const
	Setup an XOF object for matrix sampling.

Protected Member Functions
std::unique_ptr< HashFunction >	create_G () const override
std::unique_ptr< HashFunction >	create_H () const override
std::unique_ptr< HashFunction >	create_J () const override
std::unique_ptr< HashFunction >	create_KDF () const override
std::unique_ptr< Botan::XOF >	create_PRF (std::span< const uint8_t > seed, const uint8_t nonce) const override
std::unique_ptr< Botan::XOF >	create_XOF (std::span< const uint8_t > seed, std::tuple< uint8_t, uint8_t > matrix_position) const override
void	init_PRF (Botan::XOF &xof, std::span< const uint8_t > seed, const uint8_t nonce) const override
void	init_XOF (Botan::XOF &xof, std::span< const uint8_t > seed, std::tuple< uint8_t, uint8_t > matrix_position) const override
std::optional< std::array< uint8_t, 1 > >	seed_expansion_domain_separator (const KyberConstants &) const override

Detailed Description

Definition at line 22 of file kyber_modern.h.

Member Function Documentation

◆ create_G()

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

inlineoverrideprotectedvirtual

Implements Botan::Kyber_Symmetric_Primitives.

Definition at line 29 of file kyber_modern.h.

29{ return HashFunction::create_or_throw("SHA-3(512)"); }

Botan::HashFunction::create_or_throw

static std::unique_ptr< HashFunction > create_or_throw(std::string_view algo_spec, std::string_view provider="")

Definition hash.cpp:308

References Botan::HashFunction::create_or_throw().

◆ create_H()

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

inlineoverrideprotectedvirtual

Implements Botan::Kyber_Symmetric_Primitives.

Definition at line 31 of file kyber_modern.h.

31{ return HashFunction::create_or_throw("SHA-3(256)"); }

References Botan::HashFunction::create_or_throw().

◆ create_J()

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

inlineoverrideprotectedvirtual

Implements Botan::Kyber_Symmetric_Primitives.

Definition at line 33 of file kyber_modern.h.

33{ throw Invalid_State("Kyber-R3 does not support J()"); }

◆ create_KDF()

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

inlineoverrideprotectedvirtual

Implements Botan::Kyber_Symmetric_Primitives.

Definition at line 35 of file kyber_modern.h.

                                                              {
         return HashFunction::create_or_throw("SHAKE-256(256)");
      }

References Botan::HashFunction::create_or_throw().

◆ create_PRF()

std::unique_ptr< Botan::XOF > Botan::Kyber_Modern_Symmetric_Primitives::create_PRF	(	std::span< const uint8_t >	seed,
		const uint8_t	nonce ) const

inlineoverrideprotectedvirtual

Implements Botan::Kyber_Symmetric_Primitives.

Definition at line 39 of file kyber_modern.h.

                                                                                                          {
         auto xof = Botan::XOF::create_or_throw("SHAKE-256");
         init_PRF(*xof, seed, nonce);
         return xof;
      }

References Botan::XOF::create_or_throw(), and init_PRF().

◆ create_XOF()

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

inlineoverrideprotectedvirtual

Implements Botan::Kyber_Symmetric_Primitives.

Definition at line 51 of file kyber_modern.h.

                                                                                                        {
         auto xof = Botan::XOF::create_or_throw("SHAKE-128");
         init_XOF(*xof, seed, matrix_position);
         return xof;
      }

References Botan::XOF::create_or_throw(), and init_XOF().

◆ G() [1/2]

std::pair< KyberSharedSecret, KyberEncryptionRandomness > Botan::Kyber_Symmetric_Primitives::G	(	StrongSpan< const KyberMessage >	msg,
		StrongSpan< const KyberHashedPublicKey >	pubkey_hash ) const

inlineinherited

Definition at line 53 of file kyber_symmetric_primitives.h.

                                                                                                       {
         return G_split<KyberSharedSecret, KyberEncryptionRandomness>(msg, pubkey_hash);
      }

◆ G() [2/2]

std::pair< KyberSeedRho, KyberSeedSigma > Botan::Kyber_Symmetric_Primitives::G	(	StrongSpan< const KyberSeedRandomness >	seed,
		const KyberConstants &	mode ) const

inlineinherited

Definition at line 44 of file kyber_symmetric_primitives.h.

                                                                                  {
         if(auto domsep = seed_expansion_domain_separator(mode)) {
            return G_split<KyberSeedRho, KyberSeedSigma>(seed, *domsep);
         } else {
            return G_split<KyberSeedRho, KyberSeedSigma>(seed);
         }
      }

References seed_expansion_domain_separator().

Referenced by Botan::Kyber_KEM_Decryptor::decapsulate(), Botan::ML_KEM_Decryptor::decapsulate(), and Botan::Kyber_Algos::expand_keypair().

◆ H() [1/3]

KyberHashedCiphertext Botan::Kyber_Symmetric_Primitives::H ( StrongSpan< const KyberCompressedCiphertext > r ) const

inlineinherited

Definition at line 36 of file kyber_symmetric_primitives.h.

                                                                                   {
         return create_H()->process<KyberHashedCiphertext>(r);
      }

References create_H().

◆ H() [2/3]

KyberMessage Botan::Kyber_Symmetric_Primitives::H ( StrongSpan< const KyberMessage > m ) const

inlineinherited

Definition at line 33 of file kyber_symmetric_primitives.h.

33{ return create_H()->process<KyberMessage>(m); }

Botan::KyberMessage

Strong< secure_vector< uint8_t >, struct KyberMessage_ > KyberMessage

Random message value to be encrypted by the CPA-secure Kyber encryption scheme.

Definition kyber_types.h:45

References create_H().

◆ H() [3/3]

KyberHashedPublicKey Botan::Kyber_Symmetric_Primitives::H ( StrongSpan< const KyberSerializedPublicKey > pk ) const

inlineinherited

Definition at line 40 of file kyber_symmetric_primitives.h.

                                                                                  {
         return create_H()->process<KyberHashedPublicKey>(pk);
      }

References create_H().

◆ init_PRF()

void Botan::Kyber_Modern_Symmetric_Primitives::init_PRF	(	Botan::XOF &	xof,
		std::span< const uint8_t >	seed,
		const uint8_t	nonce ) const

inlineoverrideprotectedvirtual

Implements Botan::Kyber_Symmetric_Primitives.

Definition at line 45 of file kyber_modern.h.

                                                                                                    {
         xof.clear();
         xof.update(seed);
         xof.update({&nonce, 1});
      }

References Botan::XOF::clear(), and Botan::XOF::update().

Referenced by create_PRF().

◆ init_XOF()

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

inlineoverrideprotectedvirtual

Implements Botan::Kyber_Symmetric_Primitives.

Definition at line 58 of file kyber_modern.h.

                                                                               {
         xof.clear();
         xof.update(seed);
 
         const std::array<uint8_t, 2> pos = {std::get<0>(matrix_position), std::get<1>(matrix_position)};
         xof.update(pos);
      }

References Botan::XOF::clear(), and Botan::XOF::update().

Referenced by create_XOF().

◆ J()

KyberSharedSecret Botan::Kyber_Symmetric_Primitives::J	(	StrongSpan< const KyberImplicitRejectionValue >	rejection_value,
		StrongSpan< const KyberCompressedCiphertext >	ciphertext ) const

inlineinherited

Definition at line 58 of file kyber_symmetric_primitives.h.

                                                                                        {
         auto j = create_J();
         j->update(rejection_value);
         j->update(ciphertext);
         return j->final<KyberSharedSecret>();
      }

References create_J().

◆ KDF()

void Botan::Kyber_Symmetric_Primitives::KDF	(	StrongSpan< KyberSharedSecret >	out,
		StrongSpan< const KyberSharedSecret >	shared_secret,
		StrongSpan< const KyberHashedCiphertext >	hashed_ciphertext ) const

inlineinherited

Definition at line 67 of file kyber_symmetric_primitives.h.

                                                                                {
         auto kdf = create_KDF();
         kdf->update(shared_secret);
         kdf->update(hashed_ciphertext);
         kdf->final(out);
      }

References create_KDF().

◆ PRF()

KyberSamplingRandomness Botan::Kyber_Symmetric_Primitives::PRF	(	KyberSigmaOrEncryptionRandomness	seed,
		const uint8_t	nonce,
		const size_t	outlen ) const

inlineinherited

Definition at line 76 of file kyber_symmetric_primitives.h.

                                                             {
         auto bare_seed_span = std::visit([&](const auto s) { return s.get(); }, seed);
         return create_PRF(bare_seed_span, nonce)->output<KyberSamplingRandomness>(outlen);
      }

References create_PRF().

◆ seed_expansion_domain_separator()

std::optional< std::array< uint8_t, 1 > > Botan::Kyber_Modern_Symmetric_Primitives::seed_expansion_domain_separator ( const KyberConstants & ) const

inlineoverrideprotectedvirtual

Implements Botan::Kyber_Symmetric_Primitives.

Definition at line 24 of file kyber_modern.h.

                                                 {
         return {};
      }

◆ setup_PRF()

void Botan::Kyber_Symmetric_Primitives::setup_PRF	(	std::unique_ptr< Botan::XOF > &	xof,
		std::span< const uint8_t >	seed,
		uint8_t	nonce ) const

inlineinherited

Setup a seeded PRF XOF for polynomial sampling.

Definition at line 95 of file kyber_symmetric_primitives.h.

                                                                                                     {
         if(!xof) {
            xof = create_PRF(seed, nonce);
         } else {
            init_PRF(*xof, seed, nonce);
         }
      }

References create_PRF(), and init_PRF().

◆ setup_XOF()

void Botan::Kyber_Symmetric_Primitives::setup_XOF	(	std::unique_ptr< Botan::XOF > &	xof,
		StrongSpan< const KyberSeedRho >	seed,
		std::tuple< uint8_t, uint8_t >	matrix_position ) const

inlineinherited

Setup an XOF object for matrix sampling.

Definition at line 84 of file kyber_symmetric_primitives.h.

                                                                       {
         if(!xof) {
            xof = create_XOF(seed, matrix_position);
         } else {
            init_XOF(*xof, seed, matrix_position);
         }
      }

References create_XOF(), and init_XOF().

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

src/lib/pubkey/kyber/kyber_round3/kyber/kyber_modern.h

Public Member Functions

Protected Member Functions

Detailed Description

Member Function Documentation

◆ create_G()

◆ create_H()

◆ create_J()

◆ create_KDF()

◆ create_PRF()

◆ create_XOF()

◆ G() [1/2]

◆ G() [2/2]

◆ H() [1/3]

◆ H() [2/3]

◆ H() [3/3]

◆ init_PRF()

◆ init_XOF()

◆ J()

◆ KDF()

◆ PRF()

◆ seed_expansion_domain_separator()

◆ setup_PRF()

◆ setup_XOF()