PACEGMWithECDHAgreement (JMRTD 0.7.11 API)

java.lang.Object
- org.jmrtd.protocol.PACEGMWithECDHAgreement

```
public class PACEGMWithECDHAgreement
extends Object
```
An ECDH key agreement implementation, used by PACE protocol for the Generic Mapping case, which is able to return the shared secret in the form of an EC point. Specifically this implementation is able to keep both X and Y coordinate instead of only returning the X coordinate.

Version:

$Revision: 1751 $

Author:

The JMRTD team ([email protected])

Constructor Summary

Constructors
Constructor Description

PACEGMWithECDHAgreement()

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`ECPoint`	`doPhase(PublicKey publicKey)`	Performs a key agreement protocol.
`void`	`init(PrivateKey privateKey)`	Initializes the key agreement implementation.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - PACEGMWithECDHAgreement
```
public PACEGMWithECDHAgreement()
```
- Method Detail
  - init
```
public void init(PrivateKey privateKey)
          throws InvalidKeyException
```
    Initializes the key agreement implementation.
    
    Parameters:
    
    privateKey - this party's private key
    
    Throws:
    
    InvalidKeyException - if the private key is not an instance of ECPrivateKey
  - doPhase
```
public ECPoint doPhase(PublicKey publicKey)
                throws InvalidKeyException,
                       IllegalStateException
```
    Performs a key agreement protocol.
    
    Parameters:
    
    publicKey - the other party's public key
    
    Returns:
    
    the resulting shared secretin the form of an EC point
    
    Throws:
    
    InvalidKeyException - if the provided key is not an instance of ECPublicKey
    
    IllegalStateException - if this key agreement has not been initialized