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# AuthenticatedKeyAgreementDomain Class Reference

`#include <cryptlib.h>`

Inheritance diagram for AuthenticatedKeyAgreementDomain:

List of all members.

## 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 1407 of file cryptlib.h.

## Public Member Functions
virtual unsigned int | AgreedValueLength () const=0
| return length of agreed value produced
virtual unsigned int | StaticPrivateKeyLength () const=0
| return length of static private keys in this domain
virtual unsigned int | StaticPublicKeyLength () const=0
| return length of static public keys in this domain
virtual void | GenerateStaticPrivateKey (RandomNumberGenerator &rng, byte *privateKey) const=0
| generate static private key
virtual void | GenerateStaticPublicKey (RandomNumberGenerator &rng, const byte *privateKey, byte *publicKey) const=0
| generate static public key
virtual void | GenerateStaticKeyPair (RandomNumberGenerator &rng, byte *privateKey, byte *publicKey) const
| generate private/public key pair
virtual unsigned int | EphemeralPrivateKeyLength () const=0
| return length of ephemeral private keys in this domain
virtual unsigned int | EphemeralPublicKeyLength () const=0
| return length of ephemeral public keys in this domain
virtual void | GenerateEphemeralPrivateKey (RandomNumberGenerator &rng, byte *privateKey) const=0
| generate ephemeral private key
virtual void | GenerateEphemeralPublicKey (RandomNumberGenerator &rng, const byte *privateKey, byte *publicKey) const=0
| generate ephemeral public key
virtual void | GenerateEphemeralKeyPair (RandomNumberGenerator &rng, byte *privateKey, byte *publicKey) const
| generate private/public key pair
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 from your private keys and couterparty's public keys, return false in case of failure
CryptoMaterial & | AccessMaterial ()
| returns a reference to the crypto material used by this object
const CryptoMaterial & | GetMaterial () const
| returns a const reference to the crypto material used by this object
virtual CryptoParameters & | AccessCryptoParameters ()=0
virtual const CryptoParameters & | GetCryptoParameters () const
void | BERDecode (BufferedTransformation &bt)
| for backwards compatibility, calls AccessMaterial().Load(bt)
void | DEREncode (BufferedTransformation &bt) const
| for backwards compatibility, calls GetMaterial().Save(bt)
virtual std::string | AlgorithmName () const
| returns name of this algorithm, not universally implemented yet
virtual Clonable * | Clone () const
| this is not implemented by most classes yet

## Member Function Documentation

virtual void AuthenticatedKeyAgreementDomain::GenerateStaticPrivateKey | ( | RandomNumberGenerator & | rng,
|  | byte * | privateKey
| ) | const`[pure virtual]`

| generate static private key Precondition: size of privateKey == PrivateStaticKeyLength() Implemented in DH2, and MQV_Domain< GROUP_PARAMETERS, COFACTOR_OPTION >. Referenced by GenerateStaticKeyPair().

virtual void AuthenticatedKeyAgreementDomain::GenerateStaticPublicKey | ( | RandomNumberGenerator & | rng,
|  | const byte * | privateKey,
|  | byte * | publicKey
| ) | const`[pure virtual]`

| generate static public key Precondition: size of publicKey == PublicStaticKeyLength() Implemented in DH2, and MQV_Domain< GROUP_PARAMETERS, COFACTOR_OPTION >. Referenced by GenerateStaticKeyPair().

void AuthenticatedKeyAgreementDomain::GenerateStaticKeyPair | ( | RandomNumberGenerator & | rng,
|  | byte * | privateKey,
|  | byte * | publicKey
| ) | const`[virtual]`

| generate private/public key pair Note: equivalent to calling GenerateStaticPrivateKey() and then GenerateStaticPublicKey() Reimplemented in DH2. Definition at line 651 of file cryptlib.cpp. References GenerateStaticPrivateKey(), and GenerateStaticPublicKey().

virtual void AuthenticatedKeyAgreementDomain::GenerateEphemeralPrivateKey | ( | RandomNumberGenerator & | rng,
|  | byte * | privateKey
| ) | const`[pure virtual]`

| generate ephemeral private key Precondition: size of privateKey == PrivateEphemeralKeyLength() Implemented in DH2, and MQV_Domain< GROUP_PARAMETERS, COFACTOR_OPTION >. Referenced by GenerateEphemeralKeyPair().

virtual void AuthenticatedKeyAgreementDomain::GenerateEphemeralPublicKey | ( | RandomNumberGenerator & | rng,
|  | const byte * | privateKey,
|  | byte * | publicKey
| ) | const`[pure virtual]`

| generate ephemeral public key Precondition: size of publicKey == PublicEphemeralKeyLength() Implemented in DH2, and MQV_Domain< GROUP_PARAMETERS, COFACTOR_OPTION >. Referenced by GenerateEphemeralKeyPair().

void AuthenticatedKeyAgreementDomain::GenerateEphemeralKeyPair | ( | RandomNumberGenerator & | rng,
|  | byte * | privateKey,
|  | byte * | publicKey
| ) | const`[virtual]`

| generate private/public key pair Note: equivalent to calling GenerateEphemeralPrivateKey() and then GenerateEphemeralPublicKey() Reimplemented in DH2. Definition at line 657 of file cryptlib.cpp. References GenerateEphemeralPrivateKey(), and GenerateEphemeralPublicKey().

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 from your private keys and couterparty's public keys, return false in case of failure Note: The ephemeral public key will always be validated. If you have previously validated the static public key, use validateStaticOtherPublicKey=false to save time. Precondition: size of agreedValue == AgreedValueLength() length of staticPrivateKey == StaticPrivateKeyLength() length of ephemeralPrivateKey == EphemeralPrivateKeyLength() length of staticOtherPublicKey == StaticPublicKeyLength() length of ephemeralOtherPublicKey == EphemeralPublicKeyLength() Implemented in DH2, and MQV_Domain< GROUP_PARAMETERS, COFACTOR_OPTION >.

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

- cryptlib.h
- cryptlib.cpp