Class XECPublicKeySpec
- java.lang.Object
-
- java.security.spec.XECPublicKeySpec
- All Implemented Interfaces:
KeySpec
public class XECPublicKeySpec extends Object implements KeySpec
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.
- Since:
- 11
Constructors
| Constructor | Description |
|---|---|
XECPublicKeySpec(AlgorithmParameterSpec params,
BigInteger u) | Construct a public key spec using the supplied parameters and u coordinate. |
Methods
| Modifier and Type | Method | Description |
|---|---|---|
AlgorithmParameterSpec | getParams() | Get the algorithm parameters that define the curve and other settings. |
BigInteger | getU() | Get the u coordinate of the point. |
Methods declared in class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait Constructors
XECPublicKeySpec
public XECPublicKeySpec(AlgorithmParameterSpec params,
BigInteger u) Construct a public key spec using the supplied parameters and u coordinate.
- Parameters:
-
params- the algorithm parameters -
u- the u-coordinate of the point, represented using a BigInteger which may hold any value - Throws:
-
NullPointerException- ifparamsoruis null.
Methods
getParams
public AlgorithmParameterSpec getParams()
Get the algorithm parameters that define the curve and other settings.
- Returns:
- the parameters
getU
public BigInteger getU()
Get the u coordinate of the point.
- Returns:
- the u-coordinate, represented using a BigInteger which may hold any value
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https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/security/spec/XECPublicKeySpec.html