org.bouncycastle.jcajce.provider.asymmetric.edec

Class AlgorithmParametersSpi

java.lang.Object

java.security.AlgorithmParametersSpi

org.bouncycastle.jcajce.provider.asymmetric.edec.AlgorithmParametersSpi

Direct Known Subclasses:

AlgorithmParametersSpi.Ed25519, AlgorithmParametersSpi.Ed448

public class AlgorithmParametersSpi
extends java.security.AlgorithmParametersSpi

AlgorithmParameters for the RFC 8032 EdDSA instance selectors (prehash / context) carried by EdDSAParameterSpec. On JDK 15+ the standard java.security.spec.EdDSAParameterSpec is also read and produced, via the multi-release EdDSAKeys twin. These parameters have no encoded form: RFC 8410 specifies the EdDSA AlgorithmIdentifier with absent parameters, and the prehash flag / context are not part of any standard ASN.1 parameter structure, so engineGetEncoded / engineInit(byte[]) throw IOException. The class exists as a spec container so that Signature.getParameters() can report the selected instance and callers can copy it between Signature objects.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	AlgorithmParametersSpi.Ed25519
static class	AlgorithmParametersSpi.Ed448

Method Summary

Modifier and Type	Method and Description
protected byte[]	engineGetEncoded()
protected byte[]	engineGetEncoded(java.lang.String format)
protected java.security.spec.AlgorithmParameterSpec	engineGetParameterSpec(java.lang.Class paramSpec)
protected void	engineInit(java.security.spec.AlgorithmParameterSpec paramSpec)
protected void	engineInit(byte[] params)
protected void	engineInit(byte[] params, java.lang.String format)
protected java.lang.String	engineToString()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

engineInit

protected void engineInit(java.security.spec.AlgorithmParameterSpec paramSpec)
                   throws java.security.spec.InvalidParameterSpecException

Specified by:

engineInit in class java.security.AlgorithmParametersSpi

Throws:

java.security.spec.InvalidParameterSpecException

engineInit

protected void engineInit(byte[] params)
                   throws java.io.IOException

Specified by:

engineInit in class java.security.AlgorithmParametersSpi

Throws:

java.io.IOException

engineInit

protected void engineInit(byte[] params,
                          java.lang.String format)
                   throws java.io.IOException

Specified by:

engineInit in class java.security.AlgorithmParametersSpi

Throws:

java.io.IOException

engineGetParameterSpec

protected java.security.spec.AlgorithmParameterSpec engineGetParameterSpec(java.lang.Class paramSpec)
                                                                    throws java.security.spec.InvalidParameterSpecException

Specified by:

engineGetParameterSpec in class java.security.AlgorithmParametersSpi

Throws:

java.security.spec.InvalidParameterSpecException

engineGetEncoded

protected byte[] engineGetEncoded()
                           throws java.io.IOException

Specified by:

engineGetEncoded in class java.security.AlgorithmParametersSpi

Throws:

java.io.IOException

engineGetEncoded

protected byte[] engineGetEncoded(java.lang.String format)
                           throws java.io.IOException

Specified by:

engineGetEncoded in class java.security.AlgorithmParametersSpi

Throws:

java.io.IOException

engineToString

protected java.lang.String engineToString()

Specified by:

engineToString in class java.security.AlgorithmParametersSpi