Botan 3.8.1
Crypto and TLS for C&
Public Member Functions | Static Public Member Functions | List of all members
Botan::EC_Scalar_Data_BN Class Referencefinal

#include <ec_inner_bn.h>

Inheritance diagram for Botan::EC_Scalar_Data_BN:
Botan::EC_Scalar_Data

Public Member Functions

std::unique_ptr< EC_Scalar_Data > add (const EC_Scalar_Data &other) const override
 
void assign (const EC_Scalar_Data &y) override
 
size_t bytes () const override
 
std::unique_ptr< EC_Scalar_Data > clone () const override
 
 EC_Scalar_Data_BN (std::shared_ptr< const EC_Group_Data > group, BigInt v)
 
const std::shared_ptr< const EC_Group_Data > & group () const override
 
std::unique_ptr< EC_Scalar_Data > invert () const override
 
std::unique_ptr< EC_Scalar_Data > invert_vartime () const override
 
bool is_eq (const EC_Scalar_Data &y) const override
 
bool is_zero () const override
 
std::unique_ptr< EC_Scalar_Data > mul (const EC_Scalar_Data &other) const override
 
std::unique_ptr< EC_Scalar_Data > negate () const override
 
void serialize_to (std::span< uint8_t > bytes) const override
 
void square_self () override
 
std::unique_ptr< EC_Scalar_Data > sub (const EC_Scalar_Data &other) const override
 
const BigInt & value () const
 

Static Public Member Functions

static const EC_Scalar_Data_BN & checked_ref (const EC_Scalar_Data &data)
 

Detailed Description

Definition at line 15 of file ec_inner_bn.h.

Constructor & Destructor Documentation

◆ EC_Scalar_Data_BN()

Botan::EC_Scalar_Data_BN::EC_Scalar_Data_BN ( std::shared_ptr< const EC_Group_Data > group,
BigInt v )
inline

Definition at line 17 of file ec_inner_bn.h.

17 :
18 m_group(std::move(group)), m_v(std::move(v)) {}
Botan::EC_Scalar_Data_BN::group
const std::shared_ptr< const EC_Group_Data > & group() const override
Definition ec_inner_bn.cpp:22

References group().

Referenced by checked_ref().

Member Function Documentation

◆ add()

std::unique_ptr< EC_Scalar_Data > Botan::EC_Scalar_Data_BN::add ( const EC_Scalar_Data & other) const
overridevirtual

Implements Botan::EC_Scalar_Data.

Definition at line 62 of file ec_inner_bn.cpp.

62 {
63 return std::make_unique<EC_Scalar_Data_BN>(m_group, m_group->mod_order().reduce(m_v + checked_ref(other).value()));
64}
Botan::EC_Scalar_Data_BN::value
const BigInt & value() const
Definition ec_inner_bn.h:50
Botan::EC_Scalar_Data_BN::checked_ref
static const EC_Scalar_Data_BN & checked_ref(const EC_Scalar_Data &data)
Definition ec_inner_bn.cpp:14

References checked_ref(), and value().

◆ assign()

void Botan::EC_Scalar_Data_BN::assign ( const EC_Scalar_Data & y)
overridevirtual

Implements Botan::EC_Scalar_Data.

Definition at line 42 of file ec_inner_bn.cpp.

42 {
43 m_v = checked_ref(other).value();
44}

References checked_ref(), and value().

◆ bytes()

size_t Botan::EC_Scalar_Data_BN::bytes ( ) const
overridevirtual

Implements Botan::EC_Scalar_Data.

Definition at line 26 of file ec_inner_bn.cpp.

26 {
27 return this->group()->order_bytes();
28}

References group().

Referenced by serialize_to().

◆ checked_ref()

const EC_Scalar_Data_BN & Botan::EC_Scalar_Data_BN::checked_ref ( const EC_Scalar_Data & data)
static

Definition at line 14 of file ec_inner_bn.cpp.

14 {
15 const auto* p = dynamic_cast<const EC_Scalar_Data_BN*>(&data);
16 if(!p) {
17 throw Invalid_State("Failed conversion to EC_Scalar_Data_BN");
18 }
19 return *p;
20}
Botan::EC_Scalar_Data_BN::EC_Scalar_Data_BN
EC_Scalar_Data_BN(std::shared_ptr< const EC_Group_Data > group, BigInt v)
Definition ec_inner_bn.h:17

References EC_Scalar_Data_BN().

Referenced by add(), assign(), Botan::EC_Group_Data::gk_x_mod_order(), is_eq(), Botan::EC_AffinePoint_Data_BN::mul(), mul(), Botan::EC_Mul2Table_Data_BN::mul2_vartime(), Botan::EC_Mul2Table_Data_BN::mul2_vartime_x_mod_order_eq(), Botan::EC_Group_Data::mul_px_qy(), Botan::EC_AffinePoint_Data_BN::mul_x_only(), Botan::EC_Group_Data::point_g_mul(), and sub().

◆ clone()

std::unique_ptr< EC_Scalar_Data > Botan::EC_Scalar_Data_BN::clone ( ) const
overridevirtual

Implements Botan::EC_Scalar_Data.

Definition at line 30 of file ec_inner_bn.cpp.

30 {
31 return std::make_unique<EC_Scalar_Data_BN>(this->group(), this->value());
32}

References group(), and value().

◆ group()

const std::shared_ptr< const EC_Group_Data > & Botan::EC_Scalar_Data_BN::group ( ) const
overridevirtual

Implements Botan::EC_Scalar_Data.

Definition at line 22 of file ec_inner_bn.cpp.

22 {
23 return m_group;
24}

Referenced by bytes(), clone(), and EC_Scalar_Data_BN().

◆ invert()

std::unique_ptr< EC_Scalar_Data > Botan::EC_Scalar_Data_BN::invert ( ) const
overridevirtual

Implements Botan::EC_Scalar_Data.

Definition at line 54 of file ec_inner_bn.cpp.

54 {
55 return std::make_unique<EC_Scalar_Data_BN>(m_group, inverse_mod_public_prime(m_v, m_group->order()));
56}
Botan::inverse_mod_public_prime
BigInt inverse_mod_public_prime(const BigInt &x, const BigInt &p)
Definition mod_inv.cpp:291

References Botan::inverse_mod_public_prime().

◆ invert_vartime()

std::unique_ptr< EC_Scalar_Data > Botan::EC_Scalar_Data_BN::invert_vartime ( ) const
overridevirtual

Implements Botan::EC_Scalar_Data.

Definition at line 58 of file ec_inner_bn.cpp.

58 {
59 return std::make_unique<EC_Scalar_Data_BN>(m_group, inverse_mod_public_prime(m_v, m_group->order()));
60}

References Botan::inverse_mod_public_prime().

◆ is_eq()

bool Botan::EC_Scalar_Data_BN::is_eq ( const EC_Scalar_Data & y) const
overridevirtual

Implements Botan::EC_Scalar_Data.

Definition at line 38 of file ec_inner_bn.cpp.

38 {
39 return (value() == checked_ref(other).value());
40}

References checked_ref(), and value().

◆ is_zero()

bool Botan::EC_Scalar_Data_BN::is_zero ( ) const
overridevirtual

Implements Botan::EC_Scalar_Data.

Definition at line 34 of file ec_inner_bn.cpp.

34 {
35 return this->value().is_zero();
36}
Botan::BigInt::is_zero
bool is_zero() const
Definition bigint.h:457

References Botan::BigInt::is_zero(), and value().

◆ mul()

std::unique_ptr< EC_Scalar_Data > Botan::EC_Scalar_Data_BN::mul ( const EC_Scalar_Data & other) const
overridevirtual

Implements Botan::EC_Scalar_Data.

Definition at line 71 of file ec_inner_bn.cpp.

71 {
72 return std::make_unique<EC_Scalar_Data_BN>(m_group, m_group->mod_order().multiply(m_v, checked_ref(other).value()));
73}

References checked_ref(), and value().

◆ negate()

std::unique_ptr< EC_Scalar_Data > Botan::EC_Scalar_Data_BN::negate ( ) const
overridevirtual

Implements Botan::EC_Scalar_Data.

Definition at line 50 of file ec_inner_bn.cpp.

50 {
51 return std::make_unique<EC_Scalar_Data_BN>(m_group, m_group->mod_order().reduce(m_group->order() - m_v));
52}

◆ serialize_to()

void Botan::EC_Scalar_Data_BN::serialize_to ( std::span< uint8_t > bytes) const
overridevirtual

Implements Botan::EC_Scalar_Data.

Definition at line 75 of file ec_inner_bn.cpp.

75 {
76 BOTAN_ARG_CHECK(bytes.size() == m_group->order_bytes(), "Invalid output length");
77 m_v.serialize_to(bytes);
78}
BOTAN_ARG_CHECK
#define BOTAN_ARG_CHECK(expr, msg)
Definition assert.h:31
Botan::EC_Scalar_Data_BN::bytes
size_t bytes() const override
Definition ec_inner_bn.cpp:26

References BOTAN_ARG_CHECK, and bytes().

◆ square_self()

void Botan::EC_Scalar_Data_BN::square_self ( )
overridevirtual

Implements Botan::EC_Scalar_Data.

Definition at line 46 of file ec_inner_bn.cpp.

46 {
47 m_group->mod_order().square(m_v);
48}

References Botan::BigInt::square().

◆ sub()

std::unique_ptr< EC_Scalar_Data > Botan::EC_Scalar_Data_BN::sub ( const EC_Scalar_Data & other) const
overridevirtual

Implements Botan::EC_Scalar_Data.

Definition at line 66 of file ec_inner_bn.cpp.

66 {
67 return std::make_unique<EC_Scalar_Data_BN>(
68 m_group, m_group->mod_order().reduce(m_v + (m_group->order() - checked_ref(other).value())));
69}

References checked_ref(), and value().

◆ value()

const BigInt & Botan::EC_Scalar_Data_BN::value ( ) const
inline

Definition at line 50 of file ec_inner_bn.h.

50{ return m_v; }

Referenced by add(), assign(), clone(), is_eq(), is_zero(), mul(), and sub().

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