Package 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 curdle WG draft, and is subject to change. See getEncoded().

For compatibility with older releases, decoding supports both the old and new draft specifications. See decode().

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

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

Author:
str4d
See Also:

  • 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/draft-ietf-curdle-pkix-04
      • 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

    • 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

    • equals

      public boolean equals(Object o)
      Overrides:
      equals in class Object