Interface for domains of authenticated key agreement protocols. More...

#include <cryptlib.h>

Inheritance diagram for AuthenticatedKeyAgreementDomain:

Collaboration diagram for AuthenticatedKeyAgreementDomain:

Public Member Functions
virtual	~AuthenticatedKeyAgreementDomain ()

virtual unsigned int	AgreedValueLength () const =0
	Provides the size of the agreed value. More...

virtual unsigned int	StaticPrivateKeyLength () const =0
	Provides the size of the static private key. More...

virtual unsigned int	StaticPublicKeyLength () const =0
	Provides the size of the static public key. More...

virtual void	GenerateStaticPrivateKey (RandomNumberGenerator &rng, byte *privateKey) const =0
	Generate static private key in this domain. More...

virtual void	GenerateStaticPublicKey (RandomNumberGenerator &rng, const byte privateKey, byte publicKey) const =0
	Generate a static public key from a private key in this domain. More...

virtual void	GenerateStaticKeyPair (RandomNumberGenerator &rng, byte privateKey, byte publicKey) const
	Generate a static private/public key pair. More...

virtual unsigned int	EphemeralPrivateKeyLength () const =0
	Provides the size of ephemeral private key. More...

virtual unsigned int	EphemeralPublicKeyLength () const =0
	Provides the size of ephemeral public key. More...

virtual void	GenerateEphemeralPrivateKey (RandomNumberGenerator &rng, byte *privateKey) const =0
	Generate ephemeral private key. More...

virtual void	GenerateEphemeralPublicKey (RandomNumberGenerator &rng, const byte privateKey, byte publicKey) const =0
	Generate ephemeral public key. More...

virtual void	GenerateEphemeralKeyPair (RandomNumberGenerator &rng, byte privateKey, byte publicKey) const
	Generate private/public key pair. More...

virtual bool	Agree (byte agreedValue, const byte staticPrivateKey, const byte ephemeralPrivateKey, const byte staticOtherPublicKey, const byte *ephemeralOtherPublicKey, bool validateStaticOtherPublicKey=true) const =0
	Derive agreed value. More...

Public Member Functions inherited from KeyAgreementAlgorithm
virtual	~KeyAgreementAlgorithm ()

CryptoMaterial &	AccessMaterial ()
	Retrieves a reference to Crypto Parameters. More...

const CryptoMaterial &	GetMaterial () const
	Retrieves a reference to Crypto Parameters. More...

virtual CryptoParameters &	AccessCryptoParameters ()=0
	Retrieves a reference to Crypto Parameters. More...

virtual const CryptoParameters &	GetCryptoParameters () const
	Retrieves a reference to Crypto Parameters. More...

Public Member Functions inherited from AsymmetricAlgorithm
virtual	~AsymmetricAlgorithm ()

void	BERDecode (BufferedTransformation &bt)
	Loads this object from a BufferedTransformation. More...

void	DEREncode (BufferedTransformation &bt) const
	Saves this object to a BufferedTransformation. More...

Public Member Functions inherited from Algorithm
virtual	~Algorithm ()

	Algorithm (bool checkSelfTestStatus=true)
	Interface for all crypto algorithms. More...

virtual std::string	AlgorithmName () const
	Provides the name of this algorithm. More...

Public Member Functions inherited from Clonable
virtual	~Clonable ()

virtual Clonable *	Clone () const
	Copies this object. More...

Detailed Description

Interface for domains of authenticated key agreement protocols.

In an authenticated key agreement protocol, each party has two key pairs. The long-lived key pair is called the static key pair, and the short-lived key pair is called the ephemeral key pair.

Definition at line 2727 of file cryptlib.h.

Constructor & Destructor Documentation

virtual AuthenticatedKeyAgreementDomain::~AuthenticatedKeyAgreementDomain ( )

inlinevirtual

Definition at line 2730 of file cryptlib.h.

Member Function Documentation

virtual bool AuthenticatedKeyAgreementDomain::Agree	(	byte *	agreedValue,
		const byte *	staticPrivateKey,
		const byte *	ephemeralPrivateKey,
		const byte *	staticOtherPublicKey,
		const byte *	ephemeralOtherPublicKey,
		bool	validateStaticOtherPublicKey = `true`
	)		const

pure virtual

Derive agreed value.

Parameters

agreedValue	a byte buffer for the shared secret
staticPrivateKey	a byte buffer with your static private key in this domain
ephemeralPrivateKey	a byte buffer with your ephemeral private key in this domain
staticOtherPublicKey	a byte buffer with the other party's static public key in this domain
ephemeralOtherPublicKey	a byte buffer with the other party's ephemeral public key in this domain
validateStaticOtherPublicKey	a flag indicating if the other party's public key should be validated

Returns: true upon success, false in case of failure

Agree() derives an agreed value from your private keys and couterparty's public keys.

The other party's ephemeral public key is validated by default. If you have previously validated the static public key, use validateStaticOtherPublicKey=false to save time.

Precondition: COUNTOF(agreedValue) == AgreedValueLength(); COUNTOF(staticPrivateKey) == StaticPrivateKeyLength(); COUNTOF(ephemeralPrivateKey) == EphemeralPrivateKeyLength(); COUNTOF(staticOtherPublicKey) == StaticPublicKeyLength(); COUNTOF(ephemeralOtherPublicKey) == EphemeralPublicKeyLength()

Implemented in MQV_Domain< GROUP_PARAMETERS, COFACTOR_OPTION >, FHMQV_Domain< GROUP_PARAMETERS, COFACTOR_OPTION, HASH >, HMQV_Domain< GROUP_PARAMETERS, COFACTOR_OPTION, HASH >, and DH2.

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virtual unsigned int AuthenticatedKeyAgreementDomain::AgreedValueLength ( ) const

pure virtual

Provides the size of the agreed value.

Returns: size of agreed value produced in this domain

Implemented in MQV_Domain< GROUP_PARAMETERS, COFACTOR_OPTION >, FHMQV_Domain< GROUP_PARAMETERS, COFACTOR_OPTION, HASH >, HMQV_Domain< GROUP_PARAMETERS, COFACTOR_OPTION, HASH >, and DH2.

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virtual unsigned int AuthenticatedKeyAgreementDomain::EphemeralPrivateKeyLength ( ) const

pure virtual

Provides the size of ephemeral private key.

Returns: the size of ephemeral private key in this domain

Implemented in MQV_Domain< GROUP_PARAMETERS, COFACTOR_OPTION >, FHMQV_Domain< GROUP_PARAMETERS, COFACTOR_OPTION, HASH >, HMQV_Domain< GROUP_PARAMETERS, COFACTOR_OPTION, HASH >, and DH2.

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virtual unsigned int AuthenticatedKeyAgreementDomain::EphemeralPublicKeyLength ( ) const

pure virtual

Provides the size of ephemeral public key.

Returns: the size of ephemeral public key in this domain

Implemented in MQV_Domain< GROUP_PARAMETERS, COFACTOR_OPTION >, FHMQV_Domain< GROUP_PARAMETERS, COFACTOR_OPTION, HASH >, HMQV_Domain< GROUP_PARAMETERS, COFACTOR_OPTION, HASH >, and DH2.

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void AuthenticatedKeyAgreementDomain::GenerateEphemeralKeyPair	(	RandomNumberGenerator &	rng,
		byte *	privateKey,
		byte *	publicKey
	)		const

virtual

Generate private/public key pair.

Parameters

rng	a RandomNumberGenerator derived class
privateKey	a byte buffer for the generated private key in this domain
publicKey	a byte buffer for the generated public key in this domain

GenerateEphemeralKeyPair() is equivalent to calling GenerateEphemeralPrivateKey() and then GenerateEphemeralPublicKey()

Reimplemented in DH2.

Definition at line 942 of file cryptlib.cpp.

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virtual void AuthenticatedKeyAgreementDomain::GenerateEphemeralPrivateKey	(	RandomNumberGenerator &	rng,
		byte *	privateKey
	)		const

pure virtual

Generate ephemeral private key.

Parameters

rng	a RandomNumberGenerator derived class
privateKey	a byte buffer for the generated private key in this domain

Precondition: COUNTOF(privateKey) == PrivateEphemeralKeyLength()

Implemented in MQV_Domain< GROUP_PARAMETERS, COFACTOR_OPTION >, FHMQV_Domain< GROUP_PARAMETERS, COFACTOR_OPTION, HASH >, HMQV_Domain< GROUP_PARAMETERS, COFACTOR_OPTION, HASH >, and DH2.

virtual void AuthenticatedKeyAgreementDomain::GenerateEphemeralPublicKey	(	RandomNumberGenerator &	rng,
		const byte *	privateKey,
		byte *	publicKey
	)		const

pure virtual

Generate ephemeral public key.

Parameters

rng	a RandomNumberGenerator derived class
privateKey	a byte buffer for the generated private key in this domain
publicKey	a byte buffer for the generated public key in this domain

Precondition: COUNTOF(publicKey) == PublicEphemeralKeyLength()

Implemented in MQV_Domain< GROUP_PARAMETERS, COFACTOR_OPTION >, FHMQV_Domain< GROUP_PARAMETERS, COFACTOR_OPTION, HASH >, HMQV_Domain< GROUP_PARAMETERS, COFACTOR_OPTION, HASH >, and DH2.

void AuthenticatedKeyAgreementDomain::GenerateStaticKeyPair	(	RandomNumberGenerator &	rng,
		byte *	privateKey,
		byte *	publicKey
	)		const

virtual

Generate a static private/public key pair.

Parameters

rng	a RandomNumberGenerator derived class
privateKey	a byte buffer for the generated private key in this domain
publicKey	a byte buffer for the generated public key in this domain

GenerateStaticKeyPair() is equivalent to calling GenerateStaticPrivateKey() and then GenerateStaticPublicKey().

Precondition: COUNTOF(privateKey) == PrivateStaticKeyLength(); COUNTOF(publicKey) == PublicStaticKeyLength()

Reimplemented in DH2.

Definition at line 936 of file cryptlib.cpp.

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virtual void AuthenticatedKeyAgreementDomain::GenerateStaticPrivateKey	(	RandomNumberGenerator &	rng,
		byte *	privateKey
	)		const

pure virtual

Generate static private key in this domain.

Parameters

rng	a RandomNumberGenerator derived class
privateKey	a byte buffer for the generated private key in this domain

Precondition: COUNTOF(privateKey) == PrivateStaticKeyLength()

Implemented in MQV_Domain< GROUP_PARAMETERS, COFACTOR_OPTION >, FHMQV_Domain< GROUP_PARAMETERS, COFACTOR_OPTION, HASH >, HMQV_Domain< GROUP_PARAMETERS, COFACTOR_OPTION, HASH >, and DH2.

virtual void AuthenticatedKeyAgreementDomain::GenerateStaticPublicKey	(	RandomNumberGenerator &	rng,
		const byte *	privateKey,
		byte *	publicKey
	)		const

pure virtual

Generate a static public key from a private key in this domain.

Parameters

rng	a RandomNumberGenerator derived class
privateKey	a byte buffer with the previously generated private key
publicKey	a byte buffer for the generated public key in this domain