Botan::Kyber_PrivateKeyInternal Class Reference

#include <kyber_keys.h>

Public Member Functions
void	_const_time_poison () const
void	_const_time_unpoison () const
KyberMessage	indcpa_decrypt (StrongSpan< const KyberCompressedCiphertext > ct) const
	Kyber_PrivateKeyInternal ()=delete
	Kyber_PrivateKeyInternal (KyberConstants mode, KyberPolyVecNTT s, KyberPrivateKeySeed seed)
const KyberConstants &	mode () const
KyberPolyVecNTT &	s ()
const KyberPolyVecNTT &	s () const
const KyberPrivateKeySeed &	seed () const
const KyberImplicitRejectionValue &	z () const

Detailed Description

Definition at line 81 of file kyber_keys.h.

Constructor & Destructor Documentation

Kyber_PrivateKeyInternal() [1/2]

Botan::Kyber_PrivateKeyInternal::Kyber_PrivateKeyInternal ( KyberConstants mode, KyberPolyVecNTT s, KyberPrivateKeySeed seed )

inline

Definition at line 83 of file kyber_keys.h.

                                                                                                 :
            m_mode(std::move(mode)), m_s(std::move(s)), m_seed(std::move(seed)) {}

References mode(), s(), and seed().

Kyber_PrivateKeyInternal() [2/2]

Botan::Kyber_PrivateKeyInternal::Kyber_PrivateKeyInternal ( )

delete

Member Function Documentation

_const_time_poison()

void Botan::Kyber_PrivateKeyInternal::_const_time_poison ( ) const

inline

Definition at line 100 of file kyber_keys.h.

{ CT::poison_all(m_s, m_seed.d, m_seed.z); }

References Botan::CT::poison_all().

_const_time_unpoison()

void Botan::Kyber_PrivateKeyInternal::_const_time_unpoison ( ) const

inline

Definition at line 102 of file kyber_keys.h.

{ CT::unpoison_all(m_s, m_seed.d, m_seed.z); }

References Botan::CT::unpoison_all().

indcpa_decrypt()

KyberMessage Botan::Kyber_PrivateKeyInternal::indcpa_decrypt

(

StrongSpan< const KyberCompressedCiphertext >

ct

)

const

NIST FIPS 203, Algorithm 15 (K-PKE.Decrypt)

s^T is already decoded and available as a member variable. This allows to reuse the structure for multiple decryptions.

Definition at line 158 of file kyber_keys.cpp.

                                                                                                          {
   auto [u, v] = Kyber_Algos::decompress_ciphertext(ct, m_mode);
   v -= inverse_ntt(m_s * ntt(std::move(u)));
   v.reduce();
   return Kyber_Algos::polynomial_to_message(v);
}

References Botan::Kyber_Algos::decompress_ciphertext(), and Botan::Kyber_Algos::polynomial_to_message().

mode()

const KyberConstants & Botan::Kyber_PrivateKeyInternal::mode ( ) const

inline

Definition at line 96 of file kyber_keys.h.

{ return m_mode; }

Referenced by Kyber_PrivateKeyInternal().

s() [1/2]

KyberPolyVecNTT & Botan::Kyber_PrivateKeyInternal::s ( )

inline

Definition at line 88 of file kyber_keys.h.

{ return m_s; }

Referenced by Kyber_PrivateKeyInternal().

s() [2/2]

const KyberPolyVecNTT & Botan::Kyber_PrivateKeyInternal::s ( ) const

inline

Definition at line 90 of file kyber_keys.h.

{ return m_s; }

seed()

const KyberPrivateKeySeed & Botan::Kyber_PrivateKeyInternal::seed ( ) const

inline

Definition at line 92 of file kyber_keys.h.

{ return m_seed; }

Referenced by Kyber_PrivateKeyInternal().

z()

const KyberImplicitRejectionValue & Botan::Kyber_PrivateKeyInternal::z ( ) const

inline

Definition at line 94 of file kyber_keys.h.

{ return m_seed.z; }

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

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