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.

For compatibility with older releases, decoding supports both RFC 8410 and an older draft specification.

Since:
0.9.15
Author:
str4d
See Also:
RFC 8410, Older draft specification, Serialized Form
  • Constructor Details

  • Method Details

    • getAlgorithm

      public String getAlgorithm()
      Specified by:
      getAlgorithm in interface Key
    • getFormat

      public String getFormat()
      Specified by:
      getFormat in interface Key
    • getEncoded

      public byte[] getEncoded()
      Returns the public key in its canonical encoding.

      This implements the following specs:

      • General encoding: https://tools.ietf.org/html/rfc8410
      • Key encoding: https://tools.ietf.org/html/rfc8032

      For keys in older formats, decoding and then re-encoding is sufficient to migrate them to the canonical encoding.

      Relevant spec quotes:

        In the X.509 certificate, the subjectPublicKeyInfo field has the
        SubjectPublicKeyInfo type, which has the following ASN.1 syntax:
      
        SubjectPublicKeyInfo  ::=  SEQUENCE  {
          algorithm         AlgorithmIdentifier,
          subjectPublicKey  BIT STRING
        }
       
        AlgorithmIdentifier  ::=  SEQUENCE  {
          algorithm   OBJECT IDENTIFIER,
          parameters  ANY DEFINED BY algorithm OPTIONAL
        }
      
        For all of the OIDs, the parameters MUST be absent.
       
        id-Ed25519   OBJECT IDENTIFIER ::= { 1 3 101 112 }
       
      Specified by:
      getEncoded in interface Key
      Returns:
      44 bytes for Ed25519, null for other curves
      Since:
      implemented in 0.9.25
    • getParams

      public EdDSAParameterSpec getParams()
      Specified by:
      getParams in interface EdDSAKey
      Returns:
      a parameter specification representing the EdDSA domain parameters for the key.
    • getA

      public GroupElement getA()
    • getNegativeA

      public GroupElement getNegativeA()
    • getAbyte

      public byte[] getAbyte()
    • hashCode

      public int hashCode()
      Overrides:
      hashCode in class Object
      Since:
      0.9.25
    • equals

      public boolean equals​(Object o)
      Overrides:
      equals in class Object
      Since:
      0.9.25