public
class
ECParameterSpec
extends Object
implements
AlgorithmParameterSpec
java.lang.Object | |
↳ | java.security.spec.ECParameterSpec |
This immutable class specifies the set of domain parameters used with elliptic curve cryptography (ECC).
See also:
Public constructors | |
---|---|
ECParameterSpec(EllipticCurve curve, ECPoint g, BigInteger n, int h)
Creates elliptic curve domain parameters based on the specified values. |
Public methods | |
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int
|
getCofactor()
Returns the cofactor. |
EllipticCurve
|
getCurve()
Returns the elliptic curve that this parameter defines. |
ECPoint
|
getGenerator()
Returns the generator which is also known as the base point. |
BigInteger
|
getOrder()
Returns the order of the generator. |
Inherited methods | |
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From
class
java.lang.Object
|
ECParameterSpec (EllipticCurve curve, ECPoint g, BigInteger n, int h)
Creates elliptic curve domain parameters based on the specified values.
Parameters | |
---|---|
curve |
EllipticCurve :
the elliptic curve which this parameter
defines. |
g |
ECPoint :
the generator which is also known as the base point. |
n |
BigInteger :
the order of the generator g . |
h |
int :
the cofactor. |
Throws | |
---|---|
NullPointerException |
if curve ,
g , or n is null. |
IllegalArgumentException |
if n
or h is not positive.
|
EllipticCurve getCurve ()
Returns the elliptic curve that this parameter defines.
Returns | |
---|---|
EllipticCurve |
the elliptic curve that this parameter defines. |
ECPoint getGenerator ()
Returns the generator which is also known as the base point.
Returns | |
---|---|
ECPoint |
the generator which is also known as the base point. |
BigInteger getOrder ()
Returns the order of the generator.
Returns | |
---|---|
BigInteger |
the order of the generator. |