org.jmrtd.lds
Class ChipAuthenticationInfo

java.lang.Object
  org.jmrtd.lds.SecurityInfo
      org.jmrtd.lds.ChipAuthenticationInfo

public class ChipAuthenticationInfo
extends SecurityInfo

A concrete SecurityInfo structure that stores chip authentication info, see EAC 1.11 specification. This data structure provides detailed information on an implementation of Chip Authentication.

• The object identifier protocol SHALL identify the algorithms to be used (i.e. key agreement, symmetric cipher and MAC).
• The integer version SHALL identify the version of the protocol. Currently, versions 1 and 2 are supported.
• The integer keyId MAY be used to indicate the local key identifier. It MUST be used if the MRTD chip provides multiple public keys for Chip Authentication.

Author:

Wojciech Mostowski (woj@cs.ru.nl) FIXME: dependency on BC?

Field Summary

static int

VERSION_NUM

Constructor Summary

ChipAuthenticationInfo(String oid, int version)
Constructs a new object.

ChipAuthenticationInfo(String oid, int version, int keyId)
Constructs a new object.

Method Summary

protected void	checkFields() Checks the correctness of the data for this instance of SecurityInfo
DERObject	getDERObject() Returns a DER object with this SecurityInfo data (DER sequence)
Integer	getKeyId() Returns a key identifier stored in this ChipAuthenticationInfo structure, null if not present
String	getObjectIdentifier() Returns the object identifier of this SecurityInfo
String	toString()

Methods inherited from class org.jmrtd.lds.SecurityInfo

lookupMnemonicByOID

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

VERSION_NUM

public static final int VERSION_NUM

See Also:

Constant Field Values

Constructor Detail

ChipAuthenticationInfo

public ChipAuthenticationInfo(String oid,
                              int version,
                              int keyId)

Constructs a new object.

Parameters:

oid - a proper EAC identifier

version - has to be 1

keyId - the key identifier

ChipAuthenticationInfo

public ChipAuthenticationInfo(String oid,
                              int version)

Constructs a new object.

Parameters:

oid - a proper EAC identifier

version - has to be 1

Method Detail

getDERObject

public DERObject getDERObject()

Description copied from class: SecurityInfo

Returns a DER object with this SecurityInfo data (DER sequence)

Returns:

a DER object with this SecurityInfo data

getObjectIdentifier

public String getObjectIdentifier()

Description copied from class: SecurityInfo

Returns the object identifier of this SecurityInfo

Specified by:

getObjectIdentifier in class SecurityInfo

Returns:

this SecurityInfo object identifier

getKeyId

public Integer getKeyId()

Returns a key identifier stored in this ChipAuthenticationInfo structure, null if not present

Returns:

key identifier stored in this ChipAuthenticationInfo structure

checkFields

protected void checkFields()

Checks the correctness of the data for this instance of SecurityInfo

toString

public String toString()

Overrides:

toString in class Object