net.i2p.crypto.eddsa

Class EdDSAPublicKey

java.lang.Object

net.i2p.crypto.eddsa.EdDSAPublicKey

All Implemented Interfaces:

Serializable, Key, PublicKey, EdDSAKey

public class EdDSAPublicKey
extends Object
implements EdDSAKey, PublicKey

An EdDSA public key.

Warning: Public key encoding is is based on the current IETF draft, and is subject to change. See getEncoded().

Ref: https://tools.ietf.org/html/draft-josefsson-pkix-eddsa-04

Author:

str4d

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
EdDSAPublicKey(EdDSAPublicKeySpec spec)
EdDSAPublicKey(X509EncodedKeySpec spec)

Method Summary

Methods

Modifier and Type	Method and Description
boolean	equals(Object o)
GroupElement	getA()
byte[]	getAbyte()
String	getAlgorithm()
byte[]	getEncoded() This follows the spec at ref: https://tools.ietf.org/html/draft-josefsson-pkix-eddsa-04 which matches the docs from java.security.spec.X509EncodedKeySpec quote:
String	getFormat()
GroupElement	getNegativeA()
EdDSAParameterSpec	getParams() return a parameter specification representing the EdDSA domain parameters for the key.
int	hashCode()

Methods inherited from class java.lang.Object

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

Constructor Detail

EdDSAPublicKey

public EdDSAPublicKey(EdDSAPublicKeySpec spec)

EdDSAPublicKey

public EdDSAPublicKey(X509EncodedKeySpec spec)
               throws InvalidKeySpecException

Throws:

InvalidKeySpecException

Method Detail

getAlgorithm

public String getAlgorithm()

Specified by:

getAlgorithm in interface Key

getFormat

public String getFormat()

Specified by:

getFormat in interface Key

getEncoded

public byte[] getEncoded()

This follows the spec at ref: https://tools.ietf.org/html/draft-josefsson-pkix-eddsa-04 which matches the docs from java.security.spec.X509EncodedKeySpec quote:

 The SubjectPublicKeyInfo syntax is defined in the X.509 standard as follows:
  SubjectPublicKeyInfo ::= SEQUENCE {
    algorithm AlgorithmIdentifier,
    subjectPublicKey BIT STRING }

  AlgorithmIdentifier ::= SEQUENCE
  {
    algorithm           OBJECT IDENTIFIER,
    parameters          ANY OPTIONAL
  }

Specified by:

getEncoded in interface Key

Returns:

47 bytes for Ed25519, null for other curves

getParams

public EdDSAParameterSpec getParams()

Description copied from interface: EdDSAKey

return a parameter specification representing the EdDSA domain parameters for the key.

Specified by:

getParams in interface EdDSAKey

getA

public GroupElement getA()

getNegativeA

public GroupElement getNegativeA()

getAbyte

public byte[] getAbyte()

hashCode

public int hashCode()

Overrides:

hashCode in class Object

equals

public boolean equals(Object o)

Overrides:

equals in class Object