XECPublicKeySpec
public class XECPublicKeySpec
extends Object implements KeySpec
| java.lang.Object | |
| ↳ | java.security.spec.XECPublicKeySpec |
A class representing elliptic curve public keys as defined in RFC 7748, including the curve and other algorithm parameters. The public key is a particular point on the curve, which is represented using only its u-coordinate. A u-coordinate is an element of the field of integers modulo some value that is determined by the algorithm parameters. This field element is represented by a BigInteger which may hold any value. That is, the BigInteger is not restricted to the range of canonical field elements.
Summary
Public constructors | |
|---|---|
XECPublicKeySpec(AlgorithmParameterSpec params, BigInteger u) Construct a public key spec using the supplied parameters and u coordinate. | |
Public methods | |
|---|---|
AlgorithmParameterSpec | getParams() Get the algorithm parameters that define the curve and other settings. |
BigInteger | getU() Get the u coordinate of the point. |
Inherited methods | |
|---|---|
Public constructors
XECPublicKeySpec
public XECPublicKeySpec (AlgorithmParameterSpec params, BigInteger u)
Construct a public key spec using the supplied parameters and u coordinate.
| Parameters | |
|---|---|
params | AlgorithmParameterSpec: the algorithm parameters |
u | BigInteger: the u-coordinate of the point, represented using a BigInteger which may hold any value |
| Throws | |
|---|---|
NullPointerException | if params or u is null. |
Public methods
getParams
public AlgorithmParameterSpec getParams ()
Get the algorithm parameters that define the curve and other settings.
| Returns | |
|---|---|
AlgorithmParameterSpec | the parameters |
getU
public BigInteger getU ()
Get the u coordinate of the point.
| Returns | |
|---|---|
BigInteger | the u-coordinate, represented using a BigInteger which may hold any value |