Botan::CRYSTALS::detail Namespace Reference

Functions
constexpr auto	as_byte_source (BufferSlicer &slicer)
template<Domain To, template< typename, Domain > class StructureT, crystals_trait Trait, Domain From> requires (To != From)
StructureT< Trait, To >	domain_cast (StructureT< Trait, From > &&p)
template<crystals_trait Trait>
void	dot_product (Polynomial< Trait, Domain::NTT > &out, const PolynomialVector< Trait, Domain::NTT > &a, const PolynomialVector< Trait, Domain::NTT > &b)
template<crystals_trait Trait, Domain D>
void	montgomery (Polynomial< Trait, D > &p)

Function Documentation

as_byte_source()

auto Botan::CRYSTALS::detail::as_byte_source ( BufferSlicer & slicer )

constexpr

Definition at line 30 of file pqcrystals_encoding.h.

                                                    {
   return [&](std::span<uint8_t> out) { slicer.copy_into(out); };
}

References Botan::BufferSlicer::copy_into().

Referenced by Botan::CRYSTALS::unpack().

domain_cast()

template<Domain To, template< typename, Domain > class StructureT, crystals_trait Trait, Domain From>
requires (To != From)

StructureT< Trait, To > Botan::CRYSTALS::detail::domain_cast

(

StructureT< Trait, From > &&

p

)

Converts polynomials or polynomial vectors from one domain to another.

Definition at line 161 of file pqcrystals.h.

                                                               {
   // The public factory method `from_domain_cast` is just a workaround for
   // Xcode and NDK not understanding the friend declaration to allow this
   // to directly call the private constructor.
   return StructureT<Trait, To>::from_domain_cast(std::move(p));
}

Referenced by Botan::CRYSTALS::inverse_ntt(), Botan::CRYSTALS::inverse_ntt(), Botan::CRYSTALS::ntt(), and Botan::CRYSTALS::ntt().

dot_product()

template<crystals_trait Trait>

void Botan::CRYSTALS::detail::dot_product	(	Polynomial< Trait, Domain::NTT > &	out,
		const PolynomialVector< Trait, Domain::NTT > &	a,
		const PolynomialVector< Trait, Domain::NTT > &	b )

Definition at line 544 of file pqcrystals.h.

                                                              {
   BOTAN_ASSERT(a.size() == b.size(), "Dot product requires equally sized PolynomialVectors");
   for(size_t i = 0; i < a.size(); ++i) {
      out += a[i] * b[i];
   }
   out.reduce();
}

References Botan::b, BOTAN_ASSERT, Botan::CRYSTALS::Polynomial< Trait, D >::reduce(), and Botan::CRYSTALS::PolynomialVector< Trait, D >::size().

Referenced by Botan::CRYSTALS::operator*().

montgomery()

template<crystals_trait Trait, Domain D>

void Botan::CRYSTALS::detail::montgomery

(

Polynomial< Trait, D > &

p

)

Definition at line 537 of file pqcrystals.h.

                                         {
   for(auto& c : p) {
      c = Trait::to_montgomery(c);
   }
}

Referenced by Botan::CRYSTALS::montgomery(), and Botan::CRYSTALS::montgomery().