Botan::Kyber_PrivateKey Class Reference

#include <kyber.h>

Inheritance diagram for Botan::Kyber_PrivateKey:

Public Member Functions
std::string	algo_name () const override
AlgorithmIdentifier	algorithm_identifier () const override
bool	check_key (RandomNumberGenerator &, bool) const override
virtual std::unique_ptr< PK_Ops::Decryption >	create_decryption_op (RandomNumberGenerator &rng, std::string_view params, std::string_view provider) const
virtual std::unique_ptr< PK_Ops::Encryption >	create_encryption_op (RandomNumberGenerator &rng, std::string_view params, std::string_view provider) const
std::unique_ptr< PK_Ops::KEM_Decryption >	create_kem_decryption_op (RandomNumberGenerator &rng, std::string_view params, std::string_view provider) const override
std::unique_ptr< PK_Ops::KEM_Encryption >	create_kem_encryption_op (std::string_view params, std::string_view provider) const override
virtual std::unique_ptr< PK_Ops::Key_Agreement >	create_key_agreement_op (RandomNumberGenerator &rng, std::string_view params, std::string_view provider) const
virtual std::unique_ptr< PK_Ops::Signature >	create_signature_op (RandomNumberGenerator &rng, std::string_view params, std::string_view provider) const
virtual std::unique_ptr< PK_Ops::Verification >	create_verification_op (std::string_view params, std::string_view provider) const
virtual std::unique_ptr< PK_Ops::Verification >	create_x509_verification_op (const AlgorithmIdentifier &signature_algorithm, std::string_view provider) const
virtual Signature_Format	default_x509_signature_format () const
size_t	estimated_strength () const override
std::string	fingerprint_private (std::string_view alg) const
std::string	fingerprint_public (std::string_view alg="SHA-256") const
std::unique_ptr< Private_Key >	generate_another (RandomNumberGenerator &rng) const final
virtual const BigInt &	get_int_field (std::string_view field) const
OID	get_oid () const
size_t	key_length () const override
	Kyber_PrivateKey (const AlgorithmIdentifier &alg_id, std::span< const uint8_t > key_bits)
	Kyber_PrivateKey (RandomNumberGenerator &rng, KyberMode mode)
	Kyber_PrivateKey (std::span< const uint8_t > sk, KyberMode mode)
virtual size_t	message_part_size () const
virtual size_t	message_parts () const
KyberMode	mode () const
OID	object_identifier () const override
virtual AlgorithmIdentifier	pkcs8_algorithm_identifier () const
secure_vector< uint8_t >	private_key_bits () const override
secure_vector< uint8_t >	private_key_info () const
std::unique_ptr< Public_Key >	public_key () const override
std::vector< uint8_t >	public_key_bits () const override
secure_vector< uint8_t >	raw_private_key_bits () const override
virtual std::optional< uint64_t >	remaining_operations () const
	Retrieves the number of remaining operations if this is a stateful private key.
virtual bool	stateful_operation () const
std::vector< uint8_t >	subject_public_key () const
bool	supports_operation (PublicKeyOperation op) const override

Protected Member Functions
const std::vector< uint8_t > &	H_public_key_bits_raw () const
const std::vector< uint8_t > &	public_key_bits_raw () const

Static Protected Member Functions
static std::shared_ptr< Kyber_PublicKeyInternal >	initialize_from_encoding (std::span< const uint8_t > pub_key, KyberMode m)

Protected Attributes
std::shared_ptr< Kyber_PublicKeyInternal >	m_public

Friends
class	Kyber_KEM_Decryptor

Detailed Description

Definition at line 131 of file kyber.h.

Constructor & Destructor Documentation

Kyber_PrivateKey() [1/3]

Botan::Kyber_PrivateKey::Kyber_PrivateKey	(	RandomNumberGenerator &	rng,
		KyberMode	mode )

Definition at line 1287 of file kyber.cpp.

                                                                          {
   KyberConstants mode(m);
 
   auto G = mode.G();
   auto seed = G->process(rng.random_vec(KyberConstants::kSymBytes));
 
   const auto middle = G->output_length() / 2;
 
   BufferSlicer s(seed);
   auto seed1 = s.copy_as_vector(middle);
   auto seed2 = s.take(middle);
   BOTAN_ASSERT_NOMSG(s.empty());
 
   auto a = PolynomialMatrix::generate(seed1, false, mode);
   auto skpv = PolynomialVector::getnoise_eta1(seed2, 0, mode);
   auto e = PolynomialVector::getnoise_eta1(seed2, mode.k(), mode);
 
   skpv.ntt();
   e.ntt();
 
   // matrix-vector multiplication
   auto pkpv = a.pointwise_acc_montgomery(skpv, true);
   pkpv += e;
   pkpv.reduce();
 
   m_public = std::make_shared<Kyber_PublicKeyInternal>(mode, std::move(pkpv), std::move(seed1));
   m_private = std::make_shared<Kyber_PrivateKeyInternal>(
      std::move(mode), std::move(skpv), rng.random_vec(KyberConstants::kZLength));
}

References BOTAN_ASSERT_NOMSG, Botan::BufferSlicer::copy_as_vector(), Botan::BufferSlicer::empty(), Botan::Kyber_PublicKey::m_public, Botan::Kyber_PublicKey::mode(), Botan::RandomNumberGenerator::random_vec(), and Botan::BufferSlicer::take().

Kyber_PrivateKey() [2/3]

Botan::Kyber_PrivateKey::Kyber_PrivateKey	(	std::span< const uint8_t >	sk,
		KyberMode	mode )

Definition at line 1320 of file kyber.cpp.

                                                                         {
   KyberConstants mode(m);
 
   if(mode.private_key_byte_length() != sk.size()) {
      throw Invalid_Argument("kyber private key does not have the correct byte count");
   }
 
   BufferSlicer s(sk);
 
   auto skpv = PolynomialVector::from_bytes(s.take(mode.polynomial_vector_byte_length()), mode);
   auto pub_key = s.take(mode.public_key_byte_length());
   s.skip(KyberConstants::kPublicKeyHashLength);
   auto z = s.copy_as_secure_vector(KyberConstants::kZLength);
 
   BOTAN_ASSERT_NOMSG(s.empty());
 
   m_public = initialize_from_encoding(pub_key, m);
   m_private = std::make_shared<Kyber_PrivateKeyInternal>(std::move(mode), std::move(skpv), std::move(z));
 
   BOTAN_ASSERT(m_private && m_public, "reading private key encoding");
}

References BOTAN_ASSERT, BOTAN_ASSERT_NOMSG, Botan::BufferSlicer::copy_as_secure_vector(), Botan::BufferSlicer::empty(), Botan::Kyber_PublicKey::initialize_from_encoding(), Botan::Kyber_PublicKey::m_public, Botan::Kyber_PublicKey::mode(), Botan::BufferSlicer::skip(), and Botan::BufferSlicer::take().

Kyber_PrivateKey() [3/3]

Botan::Kyber_PrivateKey::Kyber_PrivateKey	(	const AlgorithmIdentifier &	alg_id,
		std::span< const uint8_t >	key_bits )

Definition at line 1317 of file kyber.cpp.

                                                                                                     :
      Kyber_PrivateKey(key_bits, KyberMode(alg_id.oid())) {}

Member Function Documentation

algo_name()

std::string Botan::Kyber_PublicKey::algo_name ( ) const

inlineoverridevirtualinherited

Get the name of the underlying public key scheme.

Returns

name of the public key scheme

Implements Botan::Asymmetric_Key.

Definition at line 87 of file kyber.h.

{ return "Kyber"; }

Referenced by create_kem_decryption_op(), and Botan::Kyber_PublicKey::create_kem_encryption_op().

algorithm_identifier()

AlgorithmIdentifier Botan::Kyber_PublicKey::algorithm_identifier ( ) const

overridevirtualinherited

Returns

X.509 AlgorithmIdentifier for this key

Implements Botan::Public_Key.

Definition at line 1225 of file kyber.cpp.

                                                                {
   return AlgorithmIdentifier(mode().object_identifier(), AlgorithmIdentifier::USE_EMPTY_PARAM);
}

References Botan::Kyber_PublicKey::mode(), Botan::Kyber_PublicKey::object_identifier(), and Botan::AlgorithmIdentifier::USE_EMPTY_PARAM.

check_key()

bool Botan::Kyber_PublicKey::check_key ( RandomNumberGenerator & , bool  ) const

overridevirtualinherited

Implements Botan::Public_Key.

Definition at line 1279 of file kyber.cpp.

                                                                  {
   return true;  // ??
}

create_decryption_op()

std::unique_ptr< PK_Ops::Decryption > Botan::Private_Key::create_decryption_op ( RandomNumberGenerator & rng, std::string_view params, std::string_view provider ) const

virtualinherited

This is an internal library function exposed on key types. In all cases applications should use wrappers in pubkey.h

Return an decryption operation for this key/params or throw

Parameters

rng	a random number generator. The PK_Op may maintain a reference to the RNG and use it many times. The rng must outlive any operations which reference it.
params	additional parameters
provider	the provider to use

Reimplemented in Botan::ElGamal_PrivateKey, Botan::RSA_PrivateKey, and Botan::SM2_PrivateKey.

Definition at line 111 of file pk_keys.cpp.

                                                                                              {
   throw Lookup_Error(fmt("{} does not support decryption", algo_name()));
}

References Botan::Asymmetric_Key::algo_name(), and Botan::fmt().

Referenced by Botan::PK_Decryptor_EME::PK_Decryptor_EME().

create_encryption_op()

std::unique_ptr< PK_Ops::Encryption > Botan::Public_Key::create_encryption_op ( RandomNumberGenerator & rng, std::string_view params, std::string_view provider ) const

virtualinherited

This is an internal library function exposed on key types. In almost all cases applications should use wrappers in pubkey.h

Return an encryption operation for this key/params or throw

Parameters

rng	a random number generator. The PK_Op may maintain a reference to the RNG and use it many times. The rng must outlive any operations which reference it.
params	additional parameters
provider	the provider to use

Reimplemented in Botan::ElGamal_PublicKey, Botan::RSA_PublicKey, and Botan::SM2_PublicKey.

Definition at line 90 of file pk_keys.cpp.

                                                                                             {
   throw Lookup_Error(fmt("{} does not support encryption", algo_name()));
}

References Botan::Asymmetric_Key::algo_name(), and Botan::fmt().

Referenced by Botan::PK_Encryptor_EME::PK_Encryptor_EME().

create_kem_decryption_op()

std::unique_ptr< PK_Ops::KEM_Decryption > Botan::Kyber_PrivateKey::create_kem_decryption_op ( RandomNumberGenerator & rng, std::string_view params, std::string_view provider ) const

overridevirtual

This is an internal library function exposed on key types. In all cases applications should use wrappers in pubkey.h

Return a KEM decryption operation for this key/params or throw

Parameters

rng	a random number generator. The PK_Op may maintain a reference to the RNG and use it many times. The rng must outlive any operations which reference it.
params	additional parameters
provider	the provider to use

Reimplemented from Botan::Private_Key.

Definition at line 1365 of file kyber.cpp.

                                                                                                                  {
   BOTAN_UNUSED(rng);
   if(provider.empty() || provider == "base") {
      return std::make_unique<Kyber_KEM_Decryptor>(*this, params);
   }
   throw Provider_Not_Found(algo_name(), provider);
}

References Botan::Kyber_PublicKey::algo_name(), and BOTAN_UNUSED.

create_kem_encryption_op()

std::unique_ptr< PK_Ops::KEM_Encryption > Botan::Kyber_PublicKey::create_kem_encryption_op ( std::string_view params, std::string_view provider ) const

overridevirtualinherited

This is an internal library function exposed on key types. In almost all cases applications should use wrappers in pubkey.h

Return a KEM encryption operation for this key/params or throw

Parameters

params	additional parameters
provider	the provider to use

Reimplemented from Botan::Public_Key.

Definition at line 1357 of file kyber.cpp.

                                                                                                                 {
   if(provider.empty() || provider == "base") {
      return std::make_unique<Kyber_KEM_Encryptor>(*this, params);
   }
   throw Provider_Not_Found(algo_name(), provider);
}

References Botan::Kyber_PublicKey::algo_name().

create_key_agreement_op()

std::unique_ptr< PK_Ops::Key_Agreement > Botan::Private_Key::create_key_agreement_op ( RandomNumberGenerator & rng, std::string_view params, std::string_view provider ) const

virtualinherited

This is an internal library function exposed on key types. In all cases applications should use wrappers in pubkey.h

Return a key agreement operation for this key/params or throw

Parameters

rng	a random number generator. The PK_Op may maintain a reference to the RNG and use it many times. The rng must outlive any operations which reference it.
params	additional parameters
provider	the provider to use

Reimplemented in Botan::Curve25519_PrivateKey, Botan::X448_PrivateKey, Botan::DH_PrivateKey, and Botan::ECDH_PrivateKey.

Definition at line 129 of file pk_keys.cpp.

                                                                                                    {
   throw Lookup_Error(fmt("{} does not support key agreement", algo_name()));
}

References Botan::Asymmetric_Key::algo_name(), and Botan::fmt().

Referenced by Botan::PK_Key_Agreement::PK_Key_Agreement().

create_signature_op()

std::unique_ptr< PK_Ops::Signature > Botan::Private_Key::create_signature_op ( RandomNumberGenerator & rng, std::string_view params, std::string_view provider ) const

virtualinherited

This is an internal library function exposed on key types. In all cases applications should use wrappers in pubkey.h

Return a signature operation for this key/params or throw

Parameters

rng	a random number generator. The PK_Op may maintain a reference to the RNG and use it many times. The rng must outlive any operations which reference it.
params	additional parameters
provider	the provider to use

Reimplemented in Botan::Dilithium_PrivateKey, Botan::XMSS_PrivateKey, Botan::TPM_PrivateKey, Botan::Ed448_PrivateKey, Botan::DSA_PrivateKey, Botan::ECDSA_PrivateKey, Botan::ECGDSA_PrivateKey, Botan::ECKCDSA_PrivateKey, Botan::Ed25519_PrivateKey, Botan::GOST_3410_PrivateKey, Botan::RSA_PrivateKey, Botan::SM2_PrivateKey, and Botan::SphincsPlus_PrivateKey.

Definition at line 123 of file pk_keys.cpp.

                                                                                            {
   throw Lookup_Error(fmt("{} does not support signatures", algo_name()));
}

References Botan::Asymmetric_Key::algo_name(), and Botan::fmt().

Referenced by Botan::PK_Signer::PK_Signer().

create_verification_op()

std::unique_ptr< PK_Ops::Verification > Botan::Public_Key::create_verification_op ( std::string_view params, std::string_view provider ) const

virtualinherited

This is an internal library function exposed on key types. In all cases applications should use wrappers in pubkey.h

Return a verification operation for this key/params or throw

Parameters

params	additional parameters
provider	the provider to use

Reimplemented in Botan::Ed448_PublicKey, Botan::Dilithium_PublicKey, Botan::DSA_PublicKey, Botan::ECDSA_PublicKey, Botan::ECGDSA_PublicKey, Botan::ECKCDSA_PublicKey, Botan::Ed25519_PublicKey, Botan::GOST_3410_PublicKey, Botan::RSA_PublicKey, Botan::SM2_PublicKey, Botan::SphincsPlus_PublicKey, and Botan::XMSS_PublicKey.

Definition at line 101 of file pk_keys.cpp.

                                                                                                 {
   throw Lookup_Error(fmt("{} does not support verification", algo_name()));
}

References Botan::Asymmetric_Key::algo_name(), and Botan::fmt().

Referenced by Botan::PK_Verifier::PK_Verifier().

create_x509_verification_op()

std::unique_ptr< PK_Ops::Verification > Botan::Public_Key::create_x509_verification_op ( const AlgorithmIdentifier & signature_algorithm, std::string_view provider ) const

virtualinherited

This is an internal library function exposed on key types. In all cases applications should use wrappers in pubkey.h

Return a verification operation for this combination of key and signature algorithm or throw.

Parameters

signature_algorithm	is the X.509 algorithm identifier encoding the padding scheme and hash hash function used in the signature if applicable.
provider	the provider to use

Reimplemented in Botan::RSA_PublicKey, Botan::XMSS_PublicKey, Botan::Ed448_PublicKey, Botan::Dilithium_PublicKey, Botan::DSA_PublicKey, Botan::ECDSA_PublicKey, Botan::ECGDSA_PublicKey, Botan::ECKCDSA_PublicKey, Botan::Ed25519_PublicKey, Botan::GOST_3410_PublicKey, and Botan::SphincsPlus_PublicKey.

Definition at line 106 of file pk_keys.cpp.

                                                                                                      {
   throw Lookup_Error(fmt("{} does not support X.509 verification", algo_name()));
}

References Botan::Asymmetric_Key::algo_name(), and Botan::fmt().

Referenced by Botan::PK_Verifier::PK_Verifier().

default_x509_signature_format()

virtual Signature_Format Botan::Public_Key::default_x509_signature_format ( ) const

inlinevirtualinherited

Reimplemented in Botan::GOST_3410_PublicKey.

Definition at line 190 of file pk_keys.h.

                                                                     {
         return (this->message_parts() >= 2) ? Signature_Format::DerSequence : Signature_Format::Standard;
      }

Referenced by Botan::X509_Object::choose_sig_format(), and Botan::PK_Verifier::PK_Verifier().

estimated_strength()

size_t Botan::Kyber_PublicKey::estimated_strength ( ) const

overridevirtualinherited

Return the estimated strength of the underlying key against the best currently known attack. Note that this ignores anything but pure attacks against the key itself and do not take into account padding schemes, usage mistakes, etc which might reduce the strength. However it does suffice to provide an upper bound.

Returns

estimated strength in bits

Implements Botan::Asymmetric_Key.

Definition at line 1233 of file kyber.cpp.

                                                 {
   return m_public->mode().estimated_strength();
}

References Botan::Kyber_PublicKey::m_public.

fingerprint_private()

std::string Botan::Private_Key::fingerprint_private ( std::string_view alg ) const

inherited

Returns

Hash of the PKCS #8 encoding for this key object

Definition at line 86 of file pk_keys.cpp.

                                                                         {
   return create_hex_fingerprint(private_key_bits(), hash_algo);
}

References Botan::create_hex_fingerprint(), and Botan::Private_Key::private_key_bits().

Referenced by Botan::Certificate_Store_In_SQL::find_certs_for_key(), Botan::Certificate_Store_In_SQL::insert_key(), and Botan::Certificate_Store_In_SQL::remove_key().

fingerprint_public()

std::string Botan::Public_Key::fingerprint_public ( std::string_view alg = "SHA-256" ) const

inherited

Returns

Hash of the subject public key

Definition at line 79 of file pk_keys.cpp.

                                                                       {
   return create_hex_fingerprint(subject_public_key(), hash_algo);
}

References Botan::create_hex_fingerprint(), and Botan::Public_Key::subject_public_key().

generate_another()

std::unique_ptr< Private_Key > Botan::Kyber_PublicKey::generate_another ( RandomNumberGenerator & rng ) const

finalvirtualinherited

Generate another (cryptographically independent) key pair using the same algorithm parameters as this key. This is most useful for algorithms that support PublicKeyOperation::KeyAgreement to generate a fitting ephemeral key pair. For other key types it might throw Not_Implemented.

Implements Botan::Asymmetric_Key.

Definition at line 1283 of file kyber.cpp.

                                                                                             {
   return std::make_unique<Kyber_PrivateKey>(rng, mode());
}

References Botan::Kyber_PublicKey::mode().

get_int_field()

const BigInt & Botan::Asymmetric_Key::get_int_field ( std::string_view field ) const

virtualinherited

Access an algorithm specific field

If the field is not known for this algorithm, an Invalid_Argument is thrown. The interpretation of the result requires knowledge of which algorithm is involved. For instance for RSA "p" represents one of the secret primes, while for DSA "p" is the public prime.

Some algorithms may not implement this method at all.

This is primarily used to implement the FFI botan_pubkey_get_field and botan_privkey_get_field functions.

Reimplemented in Botan::EC_PrivateKey, Botan::DH_PublicKey, Botan::DH_PrivateKey, Botan::DSA_PublicKey, Botan::DSA_PrivateKey, Botan::EC_PublicKey, Botan::ElGamal_PublicKey, Botan::ElGamal_PrivateKey, Botan::RSA_PublicKey, and Botan::RSA_PrivateKey.

Definition at line 18 of file pk_keys.cpp.

                                                                      {
   throw Unknown_PK_Field_Name(algo_name(), field);
}

References Botan::Asymmetric_Key::algo_name().

Referenced by Botan::EC_PublicKey::get_int_field(), and Botan::RSA_PublicKey::get_int_field().

get_oid()

OID Botan::Public_Key::get_oid ( ) const

inlineinherited

Deprecated version of object_identifier

Definition at line 132 of file pk_keys.h.

{ return this->object_identifier(); }

H_public_key_bits_raw()

const std::vector< uint8_t > & Botan::Kyber_PublicKey::H_public_key_bits_raw ( ) const

protectedinherited

Definition at line 1271 of file kyber.cpp.

                                                                       {
   return m_public->H_public_key_bits_raw();
}

References Botan::Kyber_PublicKey::m_public.

Referenced by private_key_bits().

initialize_from_encoding()

std::shared_ptr< Kyber_PublicKeyInternal > Botan::Kyber_PublicKey::initialize_from_encoding ( std::span< const uint8_t > pub_key, KyberMode m )

staticprotectedinherited

Definition at line 1237 of file kyber.cpp.

                                                                                                {
   KyberConstants mode(m);
 
   if(pub_key.size() != mode.public_key_byte_length()) {
      throw Invalid_Argument("kyber public key does not have the correct byte count");
   }
 
   BufferSlicer s(pub_key);
 
   auto poly_vec = s.take(mode.polynomial_vector_byte_length());
   auto seed = s.copy_as_vector(KyberConstants::kSeedLength);
   BOTAN_ASSERT_NOMSG(s.empty());
 
   return std::make_shared<Kyber_PublicKeyInternal>(std::move(mode), poly_vec, std::move(seed));
}

References BOTAN_ASSERT_NOMSG, Botan::BufferSlicer::copy_as_vector(), Botan::BufferSlicer::empty(), Botan::Kyber_PublicKey::mode(), and Botan::BufferSlicer::take().

Referenced by Kyber_PrivateKey().

key_length()

size_t Botan::Kyber_PublicKey::key_length ( ) const

overridevirtualinherited

Return an integer value best approximating the length of the primary security parameter. For example for RSA this will be the size of the modulus, for ECDSA the size of the ECC group, and for McEliece the size of the code will be returned.

Implements Botan::Public_Key.

Definition at line 1275 of file kyber.cpp.

                                         {
   return m_public->mode().public_key_byte_length();
}

References Botan::Kyber_PublicKey::m_public.

message_part_size()

virtual size_t Botan::Public_Key::message_part_size ( ) const

inlinevirtualinherited

Returns how large each of the message parts refered to by message_parts() is

This function is public but applications should have few reasons to ever call this.

Returns

size of the message parts in bits

Reimplemented in Botan::DSA_PublicKey, Botan::ECDSA_PublicKey, Botan::ECGDSA_PublicKey, Botan::ECKCDSA_PublicKey, Botan::GOST_3410_PublicKey, and Botan::SM2_PublicKey.

Definition at line 188 of file pk_keys.h.

{ return 0; }

Referenced by Botan::PK_Signer::PK_Signer(), Botan::PK_Verifier::PK_Verifier(), and Botan::PK_Verifier::PK_Verifier().

message_parts()

virtual size_t Botan::Public_Key::message_parts ( ) const

inlinevirtualinherited

Returns more than 1 if the output of this algorithm (ciphertext, signature) should be treated as more than one value. This is used for algorithms like DSA and ECDSA, where the (r,s) output pair can be encoded as either a plain binary list or a TLV tagged DER encoding depending on the protocol.

This function is public but applications should have few reasons to ever call this.

Returns

number of message parts

Reimplemented in Botan::DSA_PublicKey, Botan::ECDSA_PublicKey, Botan::ECGDSA_PublicKey, Botan::ECKCDSA_PublicKey, Botan::GOST_3410_PublicKey, and Botan::SM2_PublicKey.

Definition at line 177 of file pk_keys.h.

{ return 1; }

Referenced by Botan::PK_Signer::PK_Signer(), Botan::PK_Verifier::PK_Verifier(), and Botan::PK_Verifier::PK_Verifier().

mode()

KyberMode Botan::Kyber_PublicKey::mode ( ) const

inherited

Definition at line 1221 of file kyber.cpp.

                                      {
   return m_public->mode().mode();
}

References Botan::Kyber_PublicKey::m_public, and Botan::KyberMode::mode().

Referenced by Botan::Kyber_PublicKey::algorithm_identifier(), Botan::Kyber_PublicKey::generate_another(), Botan::Kyber_PublicKey::initialize_from_encoding(), Kyber_PrivateKey(), Kyber_PrivateKey(), and Botan::Kyber_PublicKey::object_identifier().

object_identifier()

OID Botan::Kyber_PublicKey::object_identifier ( ) const

overridevirtualinherited

Get the OID of the underlying public key scheme.

Returns

OID of the public key scheme

Reimplemented from Botan::Asymmetric_Key.

Definition at line 1229 of file kyber.cpp.

                                             {
   return mode().object_identifier();
}

References Botan::Kyber_PublicKey::mode(), and Botan::KyberMode::object_identifier().

Referenced by Botan::Kyber_PublicKey::algorithm_identifier().

pkcs8_algorithm_identifier()

virtual AlgorithmIdentifier Botan::Private_Key::pkcs8_algorithm_identifier ( ) const

inlinevirtualinherited

Returns

PKCS #8 AlgorithmIdentifier for this key Might be different from the X.509 identifier, but normally is not

Reimplemented in Botan::GOST_3410_PrivateKey.

Definition at line 285 of file pk_keys.h.

{ return algorithm_identifier(); }

Referenced by Botan::Private_Key::private_key_info().

private_key_bits()

secure_vector< uint8_t > Botan::Kyber_PrivateKey::private_key_bits ( ) const

overridevirtual

Returns

BER encoded private key bits

Implements Botan::Private_Key.

Definition at line 1350 of file kyber.cpp.

                                                                {
   return concat(m_private->polynomials().to_bytes<secure_vector<uint8_t>>(),
                 public_key_bits_raw(),
                 H_public_key_bits_raw(),
                 m_private->z());
}

References Botan::concat(), Botan::Kyber_PublicKey::H_public_key_bits_raw(), and Botan::Kyber_PublicKey::public_key_bits_raw().

Referenced by raw_private_key_bits().

private_key_info()

secure_vector< uint8_t > Botan::Private_Key::private_key_info ( ) const

inherited

Returns

PKCS #8 private key encoding for this key object

Definition at line 60 of file pk_keys.cpp.

                                                           {
   const size_t PKCS8_VERSION = 0;
 
   return DER_Encoder()
      .start_sequence()
      .encode(PKCS8_VERSION)
      .encode(pkcs8_algorithm_identifier())
      .encode(private_key_bits(), ASN1_Type::OctetString)
      .end_cons()
      .get_contents();
}

References Botan::DER_Encoder::encode(), Botan::DER_Encoder::end_cons(), Botan::DER_Encoder::get_contents(), Botan::OctetString, Botan::Private_Key::pkcs8_algorithm_identifier(), Botan::Private_Key::private_key_bits(), and Botan::DER_Encoder::start_sequence().

Referenced by Botan::PKCS8::BER_encode(), Botan::PKCS8::BER_encode_encrypted_pbkdf_iter(), Botan::PKCS8::BER_encode_encrypted_pbkdf_msec(), and Botan::PKCS8::PEM_encode().

public_key()

std::unique_ptr< Public_Key > Botan::Kyber_PrivateKey::public_key ( ) const

overridevirtual

Allocate a new object for the public key associated with this private key.

Returns

public key

Implements Botan::Private_Key.

Definition at line 1342 of file kyber.cpp.

                                                             {
   return std::make_unique<Kyber_PublicKey>(*this);
}

public_key_bits()

std::vector< uint8_t > Botan::Kyber_PublicKey::public_key_bits ( ) const

overridevirtualinherited

Returns

BER encoded public key bits

Implements Botan::Public_Key.

Definition at line 1263 of file kyber.cpp.

                                                          {
   return public_key_bits_raw();
}

References Botan::Kyber_PublicKey::public_key_bits_raw().

public_key_bits_raw()

const std::vector< uint8_t > & Botan::Kyber_PublicKey::public_key_bits_raw ( ) const

protectedinherited

Definition at line 1267 of file kyber.cpp.

                                                                     {
   return m_public->public_key_bits_raw();
}

References Botan::Kyber_PublicKey::m_public.

Referenced by private_key_bits(), and Botan::Kyber_PublicKey::public_key_bits().

raw_private_key_bits()

secure_vector< uint8_t > Botan::Kyber_PrivateKey::raw_private_key_bits ( ) const

overridevirtual

Returns

binary private key bits, with no additional encoding

Note: some algorithms (for example RSA) do not have an obvious encoding for this value due to having many different values, and thus not implement this function. The default implementation throws Not_Implemented

Reimplemented from Botan::Private_Key.

Definition at line 1346 of file kyber.cpp.

                                                                    {
   return this->private_key_bits();
}

References private_key_bits().

remaining_operations()

virtual std::optional< uint64_t > Botan::Private_Key::remaining_operations ( ) const

inlinevirtualinherited

Retrieves the number of remaining operations if this is a stateful private key.

Returns

the number of remaining operations or std::nullopt if not applicable.

Reimplemented in Botan::XMSS_PrivateKey.

Definition at line 298 of file pk_keys.h.

{ return std::nullopt; }

stateful_operation()

virtual bool Botan::Private_Key::stateful_operation ( ) const

inlinevirtualinherited

Indicates if this key is stateful, ie that performing a private key operation requires updating the key storage.

Reimplemented in Botan::XMSS_PrivateKey.

Definition at line 291 of file pk_keys.h.

{ return false; }

subject_public_key()

std::vector< uint8_t > Botan::Public_Key::subject_public_key ( ) const

inherited

Returns

X.509 subject key encoding for this key object

Definition at line 48 of file pk_keys.cpp.

                                                        {
   std::vector<uint8_t> output;
 
   DER_Encoder(output)
      .start_sequence()
      .encode(algorithm_identifier())
      .encode(public_key_bits(), ASN1_Type::BitString)
      .end_cons();
 
   return output;
}

References Botan::Public_Key::algorithm_identifier(), Botan::BitString, Botan::DER_Encoder::encode(), Botan::DER_Encoder::end_cons(), Botan::Public_Key::public_key_bits(), and Botan::DER_Encoder::start_sequence().

Referenced by Botan::X509::BER_encode(), Botan::PKCS10_Request::create(), Botan::Public_Key::fingerprint_public(), and Botan::X509::PEM_encode().

supports_operation()

bool Botan::Kyber_PublicKey::supports_operation ( PublicKeyOperation op ) const

inlineoverridevirtualinherited

Return true if this key could be used for the specified type of operation.

Implements Botan::Asymmetric_Key.

Definition at line 103 of file kyber.h.

                                                                    {
         return (op == PublicKeyOperation::KeyEncapsulation);
      }

Friends And Related Symbol Documentation

Kyber_KEM_Decryptor

friend class Kyber_KEM_Decryptor

friend

Definition at line 151 of file kyber.h.

Member Data Documentation

m_public

std::shared_ptr<Kyber_PublicKeyInternal> Botan::Kyber_PublicKey::m_public

protectedinherited

Definition at line 125 of file kyber.h.

Referenced by Botan::Kyber_PublicKey::estimated_strength(), Botan::Kyber_PublicKey::H_public_key_bits_raw(), Botan::Kyber_PublicKey::key_length(), Kyber_PrivateKey(), Kyber_PrivateKey(), Botan::Kyber_PublicKey::mode(), and Botan::Kyber_PublicKey::public_key_bits_raw().

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

• src/lib/pubkey/kyber/kyber_common/kyber.h
• src/lib/pubkey/kyber/kyber_common/kyber.cpp