org.spongycastle.asn1.x9

Class X9FieldElement

java.lang.Object

org.spongycastle.asn1.ASN1Object

org.spongycastle.asn1.x9.X9FieldElement

All Implemented Interfaces:

ASN1Encodable, Encodable

public class X9FieldElement
extends ASN1Object

class for processing an FieldElement as a DER object.

Field Summary

Fields

Modifier and Type	Field and Description
protected ECFieldElement	f

Constructor Summary

Constructors

Constructor and Description
X9FieldElement(java.math.BigInteger p, ASN1OctetString s)
X9FieldElement(ECFieldElement f)
X9FieldElement(int m, int k1, int k2, int k3, ASN1OctetString s)

Method Summary

Modifier and Type	Method and Description
ECFieldElement	getValue()
ASN1Primitive	toASN1Primitive() Produce an object suitable for an ASN1OutputStream.

Methods inherited from class org.spongycastle.asn1.ASN1Object

equals, getEncoded, getEncoded, hasEncodedTagValue, hashCode, toASN1Object

Methods inherited from class java.lang.Object

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

Field Detail

f

protected ECFieldElement f

Constructor Detail

X9FieldElement

public X9FieldElement(ECFieldElement f)

X9FieldElement

public X9FieldElement(java.math.BigInteger p,
                      ASN1OctetString s)

X9FieldElement

public X9FieldElement(int m,
                      int k1,
                      int k2,
                      int k3,
                      ASN1OctetString s)

Method Detail

getValue

public ECFieldElement getValue()

toASN1Primitive

public ASN1Primitive toASN1Primitive()

Produce an object suitable for an ASN1OutputStream.

  FieldElement ::= OCTET STRING
 

1. if q is an odd prime then the field element is processed as an Integer and converted to an octet string according to x 9.62 4.3.1.
2. if q is 2^m then the bit string contained in the field element is converted into an octet string with the same ordering padded at the front if necessary.

Specified by:

toASN1Primitive in interface ASN1Encodable

Specified by:

toASN1Primitive in class ASN1Object

Returns:

a primitive representation of this object.