Botan::PolynomialMatrix Class Reference

#include <kyber_structures.h>

Public Member Functions
PolynomialVector	pointwise_acc_montgomery (const PolynomialVector &vec, const bool with_mont=false) const
	PolynomialMatrix ()=delete

Static Public Member Functions
static PolynomialMatrix	generate (StrongSpan< const KyberSeedRho > seed, const bool transposed, const KyberConstants &mode)

Detailed Description

Definition at line 513 of file kyber_structures.h.

Constructor & Destructor Documentation

PolynomialMatrix()

Botan::PolynomialMatrix::PolynomialMatrix ( )

delete

Member Function Documentation

generate()

static PolynomialMatrix Botan::PolynomialMatrix::generate ( StrongSpan< const KyberSeedRho > seed, const bool transposed, const KyberConstants & mode )

inlinestatic

Definition at line 517 of file kyber_structures.h.

                                                                   {
         BOTAN_ASSERT(seed.size() == KyberConstants::kSymBytes, "unexpected seed size");
 
         PolynomialMatrix matrix(mode);
 
         for(uint8_t i = 0; i < mode.k(); ++i) {
            for(uint8_t j = 0; j < mode.k(); ++j) {
               const auto pos = (transposed) ? std::tuple(i, j) : std::tuple(j, i);
               matrix.m_mat[i][j] = Polynomial::sample_rej_uniform(mode.symmetric_primitives().XOF(seed, pos));
            }
         }
 
         return matrix;
      }

References BOTAN_ASSERT, Botan::KyberConstants::k(), Botan::KyberConstants::kSymBytes, Botan::Polynomial::sample_rej_uniform(), Botan::StrongSpan< T >::size(), Botan::KyberConstants::symmetric_primitives(), and Botan::Kyber_Symmetric_Primitives::XOF().

Referenced by Botan::Kyber_PublicKeyInternal::indcpa_encrypt(), and Botan::Kyber_PrivateKey::Kyber_PrivateKey().

pointwise_acc_montgomery()

PolynomialVector Botan::PolynomialMatrix::pointwise_acc_montgomery ( const PolynomialVector & vec, const bool with_mont = false ) const

inline

Definition at line 534 of file kyber_structures.h.

                                                                                                                 {
         PolynomialVector result(m_mat.size());
 
         for(size_t i = 0; i < m_mat.size(); ++i) {
            result[i] = PolynomialVector::pointwise_acc_montgomery(m_mat[i], vec);
            if(with_mont) {
               result[i].tomont();
            }
         }
 
         return result;
      }

References Botan::PolynomialVector::pointwise_acc_montgomery().

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

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