An encapsulated public key. More...

#include <pubkey.h>

Public Member Functions
	CPubKey ()
	Construct an invalid public key. More...

template<typename T >
void	Set (const T pbegin, const T pend)
	Initialize a public key using begin/end iterators to byte data. More...

template<typename T >
	CPubKey (const T pbegin, const T pend)
	Construct a public key using begin/end iterators to byte data. More...

	CPubKey (const std::vector< unsigned char > &_vch)
	Construct a public key from a byte vector. More...

unsigned int	size () const
	Simple read-only vector-like interface to the pubkey data. More...

const unsigned char *	data () const

const unsigned char *	begin () const

const unsigned char *	end () const

const unsigned char &	operator[] (unsigned int pos) const

template<typename Stream >
void	Serialize (Stream &s) const
	Implement serialization, as if this was a byte vector. More...

template<typename Stream >
void	Unserialize (Stream &s)

CKeyID	GetID () const
	Get the KeyID of this public key (hash of its serialization) More...

uint256	GetHash () const
	Get the 256-bit hash of this public key. More...

bool	IsValid () const

bool	IsFullyValid () const
	fully validate whether this is a valid public key (more expensive than IsValid()) More...

bool	IsCompressed () const
	Check whether this is a compressed public key. More...

bool	Verify (const uint256 &hash, const std::vector< unsigned char > &vchSig) const
	Verify a DER signature (~72 bytes). More...

bool	RecoverCompact (const uint256 &hash, const std::vector< unsigned char > &vchSig)
	Recover a public key from a compact signature. More...

bool	Decompress ()
	Turn this public key into an uncompressed public key. More...

bool	Derive (CPubKey &pubkeyChild, ChainCode &ccChild, unsigned int nChild, const ChainCode &cc) const
	Derive BIP32 child pubkey. More...

Static Public Member Functions
static bool	ValidSize (const std::vector< unsigned char > &vch)

static bool	CheckLowS (const std::vector< unsigned char > &vchSig)
	Check whether a signature is normalized (lower-S). More...

Static Public Attributes
static constexpr unsigned int	PUBLIC_KEY_SIZE = 65
	secp256k1: More...

static constexpr unsigned int	COMPRESSED_PUBLIC_KEY_SIZE = 33

static constexpr unsigned int	SIGNATURE_SIZE = 72

static constexpr unsigned int	COMPACT_SIGNATURE_SIZE = 65

Private Member Functions
void	Invalidate ()
	Set this key data to be invalid. More...

Static Private Member Functions
unsigned static int	GetLen (unsigned char chHeader)
	Compute the length of a pubkey with a given first byte. More...

Private Attributes
unsigned char	vch [PUBLIC_KEY_SIZE]
	see www.keylength.com script supports up to 75 for single byte push More...

Friends
bool	operator== (const CPubKey &a, const CPubKey &b)
	Comparator implementation. More...

bool	operator!= (const CPubKey &a, const CPubKey &b)

bool	operator< (const CPubKey &a, const CPubKey &b)

Detailed Description

An encapsulated public key.

Definition at line 30 of file pubkey.h.

Constructor & Destructor Documentation

◆ CPubKey() [1/3]

CPubKey::CPubKey ( )

inline

Construct an invalid public key.

Definition at line 79 of file pubkey.h.

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◆ CPubKey() [2/3]

template<typename T >

CPubKey::CPubKey	(	const T	pbegin,
		const T	pend
	)

inline

Construct a public key using begin/end iterators to byte data.

Definition at line 97 of file pubkey.h.

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◆ CPubKey() [3/3]

CPubKey::CPubKey ( const std::vector< unsigned char > & _vch )

inlineexplicit

Construct a public key from a byte vector.

Definition at line 103 of file pubkey.h.

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Member Function Documentation

◆ begin()

const unsigned char* CPubKey::begin ( ) const

inline

Definition at line 111 of file pubkey.h.

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◆ CheckLowS()

bool CPubKey::CheckLowS ( const std::vector< unsigned char > & vchSig )

static

Check whether a signature is normalized (lower-S).

Definition at line 274 of file pubkey.cpp.

◆ data()

const unsigned char* CPubKey::data ( ) const

inline

Definition at line 110 of file pubkey.h.

◆ Decompress()

bool CPubKey::Decompress ( )

Turn this public key into an uncompressed public key.

Definition at line 213 of file pubkey.cpp.

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◆ Derive()

bool CPubKey::Derive	(	CPubKey &	pubkeyChild,
		ChainCode &	ccChild,
		unsigned int	nChild,
		const ChainCode &	cc
	)		const

Derive BIP32 child pubkey.

Definition at line 227 of file pubkey.cpp.

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◆ end()

const unsigned char* CPubKey::end ( ) const

inline

Definition at line 112 of file pubkey.h.

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◆ GetHash()

uint256 CPubKey::GetHash ( ) const

inline

Get the 256-bit hash of this public key.

Definition at line 161 of file pubkey.h.

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◆ GetID()

CKeyID CPubKey::GetID ( ) const

inline

Get the KeyID of this public key (hash of its serialization)

Definition at line 155 of file pubkey.h.

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◆ GetLen()

unsigned static int CPubKey::GetLen ( unsigned char chHeader )

inlinestaticprivate

Compute the length of a pubkey with a given first byte.

Definition at line 57 of file pubkey.h.

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◆ Invalidate()

void CPubKey::Invalidate ( )

inlineprivate

Set this key data to be invalid.

Definition at line 67 of file pubkey.h.

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◆ IsCompressed()

bool CPubKey::IsCompressed ( ) const

inline

Check whether this is a compressed public key.

Definition at line 180 of file pubkey.h.

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◆ IsFullyValid()

bool CPubKey::IsFullyValid ( ) const

fully validate whether this is a valid public key (more expensive than IsValid())

Definition at line 206 of file pubkey.cpp.

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◆ IsValid()

bool CPubKey::IsValid ( ) const

inline

Definition at line 171 of file pubkey.h.

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◆ operator[]()

const unsigned char& CPubKey::operator[] ( unsigned int pos ) const

inline

Definition at line 113 of file pubkey.h.

◆ RecoverCompact()

bool CPubKey::RecoverCompact	(	const uint256 &	hash,
		const std::vector< unsigned char > &	vchSig
	)

Recover a public key from a compact signature.

Definition at line 186 of file pubkey.cpp.

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◆ Serialize()

template<typename Stream >

void CPubKey::Serialize ( Stream & s ) const

inline

Implement serialization, as if this was a byte vector.

Definition at line 133 of file pubkey.h.

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◆ Set()

template<typename T >

void CPubKey::Set	(	const T	pbegin,
		const T	pend
	)

inline

Initialize a public key using begin/end iterators to byte data.

Definition at line 86 of file pubkey.h.

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◆ size()

unsigned int CPubKey::size ( ) const

inline

Simple read-only vector-like interface to the pubkey data.

Definition at line 109 of file pubkey.h.

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◆ Unserialize()

template<typename Stream >

void CPubKey::Unserialize ( Stream & s )

inline

Definition at line 140 of file pubkey.h.

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◆ ValidSize()

static bool CPubKey::ValidSize ( const std::vector< unsigned char > & vch )

inlinestatic

Definition at line 74 of file pubkey.h.

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◆ Verify()

bool CPubKey::Verify	(	const uint256 &	hash,
		const std::vector< unsigned char > &	vchSig
	)		const

Verify a DER signature (~72 bytes).

If this public key is not fully valid, the return value will be false.

Definition at line 169 of file pubkey.cpp.

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Friends And Related Function Documentation

◆ operator!=

bool operator!=	(	const CPubKey &	a,
		const CPubKey &	b
	)

friend

Definition at line 121 of file pubkey.h.

◆ operator<

bool operator<	(	const CPubKey &	a,
		const CPubKey &	b
	)

friend

Definition at line 125 of file pubkey.h.

◆ operator==

bool operator==	(	const CPubKey &	a,
		const CPubKey &	b
	)

friend

Comparator implementation.

Definition at line 116 of file pubkey.h.

Member Data Documentation

◆ COMPACT_SIGNATURE_SIZE

constexpr unsigned int CPubKey::COMPACT_SIGNATURE_SIZE = 65

static

Definition at line 39 of file pubkey.h.

◆ COMPRESSED_PUBLIC_KEY_SIZE

constexpr unsigned int CPubKey::COMPRESSED_PUBLIC_KEY_SIZE = 33

static

Definition at line 37 of file pubkey.h.

◆ PUBLIC_KEY_SIZE

constexpr unsigned int CPubKey::PUBLIC_KEY_SIZE = 65

static

secp256k1:

Definition at line 36 of file pubkey.h.

◆ SIGNATURE_SIZE

constexpr unsigned int CPubKey::SIGNATURE_SIZE = 72

static

Definition at line 38 of file pubkey.h.

◆ vch

unsigned char CPubKey::vch[PUBLIC_KEY_SIZE]

private

see www.keylength.com script supports up to 75 for single byte push

Just store the serialized data. Its length can very cheaply be computed from the first byte.

Definition at line 46 of file pubkey.h.

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

src/pubkey.h
src/pubkey.cpp

Public Member Functions

Static Public Member Functions

Static Public Attributes

Private Member Functions

Static Private Member Functions

Private Attributes

Friends

Detailed Description

Constructor & Destructor Documentation

◆ CPubKey() [1/3]

◆ CPubKey() [2/3]

◆ CPubKey() [3/3]

Member Function Documentation

◆ begin()

◆ CheckLowS()

◆ data()

◆ Decompress()

◆ Derive()

◆ end()

◆ GetHash()

◆ GetID()

◆ GetLen()

◆ Invalidate()

◆ IsCompressed()

◆ IsFullyValid()

◆ IsValid()

◆ operator[]()

◆ RecoverCompact()

◆ Serialize()

◆ Set()

◆ size()

◆ Unserialize()

◆ ValidSize()

◆ Verify()

Friends And Related Function Documentation

◆ operator!=

◆ operator<

◆ operator==

Member Data Documentation

◆ COMPACT_SIGNATURE_SIZE

◆ COMPRESSED_PUBLIC_KEY_SIZE

◆ PUBLIC_KEY_SIZE

◆ SIGNATURE_SIZE

◆ vch