java.lang.Object
- org.bouncycastle.asn1.ASN1Object
- - org.bouncycastle.asn1.x9.X9Curve

All Implemented Interfaces:

ASN1Encodable, X9ObjectIdentifiers, Encodable
```
public class X9Curve
extends ASN1Object
implements X9ObjectIdentifiers
```
ASN.1 def for Elliptic-Curve Curve structure. See X9.62, for further details.

Field Summary
- Fields inherited from interface org.bouncycastle.asn1.x9.X9ObjectIdentifiers
  ansi_X9_42, 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_kdf_kdf2, id_kdf_kdf3, id_publicKeyType, mqv1, mqv2, mqvSinglePass_sha1kdf_scheme, ppBasis, prime_field, prime192v1, prime192v2, prime192v3, prime239v1, prime239v2, prime239v3, prime256v1, primeCurve, tpBasis, x9_42_schemes, x9_44, x9_44_components, x9_63_scheme

Constructor Summary

Constructors
Constructor	Description
`X9Curve(X9FieldID fieldID, java.math.BigInteger order, java.math.BigInteger cofactor, ASN1Sequence seq)`
`X9Curve(ECCurve curve)`
`X9Curve(ECCurve curve, byte[] seed)`

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`ECCurve`	`getCurve()`
`byte[]`	`getSeed()`
`ASN1Primitive`	`toASN1Primitive()`	Produce an object suitable for an ASN1OutputStream.

Methods inherited from class org.bouncycastle.asn1.ASN1Object
encodeTo, encodeTo, equals, getEncoded, getEncoded, hasEncodedTagValue, hashCode

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

Constructor Detail

X9Curve
```
public X9Curve(ECCurve curve)
```

X9Curve

public X9Curve(ECCurve curve,
               byte[] seed)

X9Curve

public X9Curve(X9FieldID fieldID,
               java.math.BigInteger order,
               java.math.BigInteger cofactor,
               ASN1Sequence seq)

Method Detail

getCurve
```
public ECCurve getCurve()
```

getSeed
```
public byte[] getSeed()
```

toASN1Primitive
```
public ASN1Primitive toASN1Primitive()
```
Produce an object suitable for an ASN1OutputStream.
```
  Curve ::= SEQUENCE {
      a               FieldElement,
      b               FieldElement,
      seed            BIT STRING      OPTIONAL
  }
 
```
Specified by:

toASN1Primitive in interface ASN1Encodable

Specified by:

toASN1Primitive in class ASN1Object

Returns:

a primitive representation of this object.

Class X9Curve

Field Summary

Fields inherited from interface org.bouncycastle.asn1.x9.X9ObjectIdentifiers

Constructor Summary

Method Summary

Methods inherited from class org.bouncycastle.asn1.ASN1Object

Methods inherited from class java.lang.Object

Constructor Detail

X9Curve

X9Curve

X9Curve

Method Detail

getCurve

getSeed

toASN1Primitive