EdDSAPublicKey (Javadocs [I2P+ 2.13.0+]

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.
See Also:
RFC 8410, Older draft specification, Serialized Form

Field Summary
- Fields inherited from interface net.i2p.crypto.eddsa.EdDSAKey
  KEY_ALGORITHM

Constructor Summary
Constructors
Constructor and Description
EdDSAPublicKey(EdDSAPublicKeySpec spec)
EdDSAPublicKey.
EdDSAPublicKey(X509EncodedKeySpec spec)
Create from X.509.

Constructors
Constructor and Description
`EdDSAPublicKey(EdDSAPublicKeySpec spec)` EdDSAPublicKey.
`EdDSAPublicKey(X509EncodedKeySpec spec)` Create from X.509.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`boolean`	`equals(Object o)` Whether this key is equal to the given key.
`GroupElement`	`getA()` The public key point A.
`byte[]`	`getAbyte()` The encoded public key.
`String`	`getAlgorithm()` The reported algorithm name for all EdDSA keys.
`byte[]`	`getEncoded()` Returns the public key in its canonical encoding.
`String`	`getFormat()` The encoding format of the key.
`GroupElement`	`getNegativeA()` The negated public key point.
`EdDSAParameterSpec`	`getParams()` The EdDSA domain parameters for the key.
`int`	`hashCode()` Hash code of the public key bytes, for use in hash tables.

Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - EdDSAPublicKey
```
public EdDSAPublicKey(EdDSAPublicKeySpec spec)
```
    EdDSAPublicKey.
    Parameters:
    spec - the public key specification
  - EdDSAPublicKey
```
public EdDSAPublicKey(X509EncodedKeySpec spec)
               throws InvalidKeySpecException
```
    Create from X.509.
    Parameters:
    spec - the X.509 key specification
    Throws:
    InvalidKeySpecException - if the spec is invalid
- Method Detail
  - equals
```
public boolean equals(Object o)
```
    Whether this key is equal to the given key.
    Overrides:
    equals in class Object
    Returns:
    true if equal
  - getA
```
public GroupElement getA()
```
    The public key point A.
    Returns:
    The public key point A.
  - getAbyte
```
public byte[] getAbyte()
```
    The encoded public key.
    Returns:
    The public key bytes.
  - getAlgorithm
```
public String getAlgorithm()
```
    The reported algorithm name for all EdDSA keys.
    Specified by:
    getAlgorithm in interface Key
    Returns:
    The algorithm.
  - 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
  - getFormat
```
public String getFormat()
```
    The encoding format of the key.
    Specified by:
    getFormat in interface Key
    Returns:
    The format.
  - getNegativeA
```
public GroupElement getNegativeA()
```
    The negated public key point.
    Returns:
    The negated public key point.
  - getParams
```
public EdDSAParameterSpec getParams()
```
    The EdDSA domain parameters for the key.
    Specified by:
    getParams in interface EdDSAKey
    Returns:
    The params.
  - hashCode
```
public int hashCode()
```
    Hash code of the public key bytes, for use in hash tables.
    Overrides:
    hashCode in class Object
    Returns:
    whether h code is present

Class EdDSAPublicKey

Field Summary

Fields inherited from interface net.i2p.crypto.eddsa.EdDSAKey

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

EdDSAPublicKey

EdDSAPublicKey

Method Detail

equals

getA

getAbyte

getAlgorithm

getEncoded

getFormat

getNegativeA

getParams

hashCode