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)

  Constructor for elliptic curves over binary fields F2m.

  Parameters:

  m - The exponent m of F2m.

  k1 - The integer k1 where xm + xk1 + 1 represents the reduction polynomial f(z).

• 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)..

Method Detail

• getInstance

  public static X9FieldID getInstance​(java.lang.Object obj)

• getIdentifier

  public ASN1ObjectIdentifier getIdentifier()

• getParameters

  public ASN1Primitive getParameters()

• toASN1Primitive

  public ASN1Primitive toASN1Primitive()

  Produce a DER encoding of the following structure.

    FieldID ::= SEQUENCE {
        fieldType       FIELD-ID.&id({IOSet}),
        parameters      FIELD-ID.&Type({IOSet}{@fieldType})
    }
   

  Specified by:

  toASN1Primitive in interface ASN1Encodable

  Specified by:

  toASN1Primitive in class ASN1Object

  Returns:

  a primitive representation of this object.