com.entrust.toolkit.security.arithmetic.fields

Class FieldElementFactory

java.lang.Object

com.entrust.toolkit.security.arithmetic.fields.FieldElementFactory

Deprecated.

since 8.0; use Entrust's new EC architecture com.entrust.toolkit.security.crypto.ec instead

public class FieldElementFactory
extends java.lang.Object

The factory class offers various methods to retrieve an instance of the FieldElement interface.

Constructor Summary

Constructors

Constructor and Description
FieldElementFactory() Deprecated.

Method Summary

Methods

Modifier and Type	Method and Description
static FieldElement	getInstance(ASN1Object object, Field field) Deprecated. Returns a field element as an instance of the FieldElement interface.
static FieldElement	getInstance(byte[] value, Field field) Deprecated. Returns a field element as an instance of the FieldElement interface.

Methods inherited from class java.lang.Object

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

Constructor Detail

FieldElementFactory

public FieldElementFactory()

Deprecated.

Method Detail

getInstance

public static FieldElement getInstance(byte[] value,
                       Field field)
                                throws CodingException,
                                       java.lang.IllegalArgumentException

Deprecated.

Returns a field element as an instance of the FieldElement interface.

Parameters:

value - an ASN1 encoded value, given as a byte array, that represents a field element

Note

Precondition: Must be recognizable by one of the instance classes of the Field interface specified by the additional field argument.

field - a Field object — the field to which the element belongs

Returns:

an instance of the FieldElement interface

Throws:

CodingException - if problems occur when parsing the byte array (for example, if the object is ill formed)

java.lang.IllegalArgumentException - if field is neither GFp nor PolynomialField

getInstance

public static FieldElement getInstance(ASN1Object object,
                       Field field)
                                throws CodingException,
                                       java.lang.IllegalArgumentException

Deprecated.

Returns a field element as an instance of the FieldElement interface.

Parameters:

object - an ASN1 object that represents the field element

Note

Precondition: Must be recognizable by one of the instance classes of the Field interface specified by the additional field argument.

field - a Field object — the field to which the element belongs

Returns:

an instance of the FieldElement interface

Throws:

CodingException - if problems occur when parsing the byte array (for example, if the object is illformed)

java.lang.IllegalArgumentException - if field is neither GFp nor PolynomialField