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Added in API level 33

Summary: Ctors | Methods | Inherited Methods

EdECPrivateKeySpec

public final class EdECPrivateKeySpec
extends Object implements KeySpec

java.lang.Object
↳	java.security.spec.EdECPrivateKeySpec

A class representing elliptic curve private keys as defined in RFC 8032: Edwards-Curve Digital Signature Algorithm (EdDSA), including the curve and other algorithm parameters. The private key is a bit string represented using a byte array. This class only supports bit string lengths that are a multiple of 8.

Summary

Public constructors
`EdECPrivateKeySpec(NamedParameterSpec params, byte[] bytes)` Construct a private key spec using the supplied parameters and bit string.

Public methods
`byte[]`	`getBytes()` Get the byte array representing the private key.
`NamedParameterSpec`	`getParams()` Get the algorithm parameters that define the curve and other settings.

Inherited methods

From class


        
          java.lang.Object

`Object`	`clone()` Creates and returns a copy of this object.
`boolean`	`equals(Object obj)` Indicates whether some other object is "equal to" this one.
`void`	`finalize()` Called by the garbage collector on an object when garbage collection determines that there are no more references to the object.
`final Class<?>`	`getClass()` Returns the runtime class of this `Object`.
`int`	`hashCode()` Returns a hash code value for the object.
`final void`	`notify()` Wakes up a single thread that is waiting on this object's monitor.
`final void`	`notifyAll()` Wakes up all threads that are waiting on this object's monitor.
`String`	`toString()` Returns a string representation of the object.
`final void`	`wait(long timeoutMillis, int nanos)` Causes the current thread to wait until it is awakened, typically by being notified or interrupted, or until a certain amount of real time has elapsed.
`final void`	`wait(long timeoutMillis)` Causes the current thread to wait until it is awakened, typically by being notified or interrupted, or until a certain amount of real time has elapsed.
`final void`	`wait()` Causes the current thread to wait until it is awakened, typically by being notified or interrupted.

Public constructors

EdECPrivateKeySpec

Added in API level 33

public EdECPrivateKeySpec (NamedParameterSpec params, 
                byte[] bytes)

Construct a private key spec using the supplied parameters and bit string.

Parameters
`params`	`NamedParameterSpec`: the algorithm parameters.
`bytes`	`byte`: the key as a byte array. This array is copied to protect against subsequent modification.

Throws
`NullPointerException`	if `params` or `bytes` is null.

Public methods

getBytes

Added in API level 33

public byte[] getBytes ()

Get the byte array representing the private key. A new copy of the array is returned each time this method is called.

Returns
`byte[]`	the private key as a byte array.

getParams

Added in API level 33

public NamedParameterSpec getParams ()

Get the algorithm parameters that define the curve and other settings.

Returns
`NamedParameterSpec`	the algorithm parameters.

Content and code samples on this page are subject to the licenses described in the Content License. Java and OpenJDK are trademarks or registered trademarks of Oracle and/or its affiliates.

Last updated 2026-08-03 UTC.

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