Bouncy Castle Cryptography Library 1.37

org.bouncycastle.asn1.x9
Class X9FieldID

java.lang.Object
  extended by org.bouncycastle.asn1.ASN1Encodable
      extended by org.bouncycastle.asn1.x9.X9FieldID
All Implemented Interfaces:
DEREncodable, X9ObjectIdentifiers

public class X9FieldID
extends ASN1Encodable
implements X9ObjectIdentifiers

ASN.1 def for Elliptic-Curve Field ID structure. See X9.62, for further details.


Field Summary
 
Fields inherited from class org.bouncycastle.asn1.ASN1Encodable
BER, DER
 
Fields inherited from interface org.bouncycastle.asn1.x9.X9ObjectIdentifiers
ansi_X9_62, c2onb191v4, c2onb191v5, c2onb239v4, c2onb239v5, c2pnb163v1, c2pnb163v2, c2pnb163v3, c2pnb176w1, c2pnb208w1, c2pnb272w1, c2pnb304w1, c2pnb368w1, c2tnb191v1, c2tnb191v2, c2tnb191v3, c2tnb239v1, c2tnb239v2, c2tnb239v3, c2tnb359v1, c2tnb431r1, characteristic_two_field, cTwoCurve, dhEphem, dhHybrid1, dhHybrid2, dhHybridOneFlow, dhOneFlow, dhpublicnumber, dhSinglePass_cofactorDH_sha1kdf_scheme, dhSinglePass_stdDH_sha1kdf_scheme, dhStatic, ecdsa_with_SHA1, ecdsa_with_SHA2, ecdsa_with_SHA224, ecdsa_with_SHA256, ecdsa_with_SHA384, ecdsa_with_SHA512, ellipticCurve, gnBasis, id_dsa, id_dsa_with_sha1, id_ecPublicKey, id_ecSigType, id_fieldType, id_publicKeyType, mqv1, mqv2, mqvSinglePass_sha1kdf_scheme, ppBasis, prime_field, prime192v1, prime192v2, prime192v3, prime239v1, prime239v2, prime239v3, prime256v1, primeCurve, tpBasis, x9_42_schemes, x9_63_scheme
 
Constructor Summary
X9FieldID(ASN1Sequence seq)
           
X9FieldID(java.math.BigInteger primeP)
          Constructor for elliptic curves over prime fields F2.
X9FieldID(int m, int k1, int k2, int k3)
          Constructor for elliptic curves over binary fields F2m.
 
Method Summary
 DERObjectIdentifier getIdentifier()
           
 DERObject getParameters()
           
 DERObject toASN1Object()
          Produce a DER encoding of the following structure.
 
Methods inherited from class org.bouncycastle.asn1.ASN1Encodable
equals, getDEREncoded, getDERObject, getEncoded, getEncoded, hashCode
 
Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

X9FieldID

public X9FieldID(java.math.BigInteger primeP)
Constructor for elliptic curves over prime fields F2.

Parameters:
primeP - The prime p defining the prime field.

X9FieldID

public X9FieldID(int m,
                 int k1,
                 int k2,
                 int k3)
Constructor for elliptic curves over binary fields F2m.

Parameters:
m - The exponent m of F2m.
k1 - The integer k1 where xm + xk3 + xk2 + xk1 + 1 represents the reduction polynomial f(z).
k2 - The integer k2 where xm + xk3 + xk2 + xk1 + 1 represents the reduction polynomial f(z).
k3 - The integer k3 where xm + xk3 + xk2 + xk1 + 1 represents the reduction polynomial f(z)..

X9FieldID

public X9FieldID(ASN1Sequence seq)
Method Detail

getIdentifier

public DERObjectIdentifier getIdentifier()

getParameters

public DERObject getParameters()

toASN1Object

public DERObject toASN1Object()
Produce a DER encoding of the following structure.
  FieldID ::= SEQUENCE {
      fieldType       FIELD-ID.&id({IOSet}),
      parameters      FIELD-ID.&Type({IOSet}{@fieldType})
  }
 

Specified by:
toASN1Object in class ASN1Encodable

Bouncy Castle Cryptography Library 1.37