EdDSAParameterSpec

open class EdDSAParameterSpec : AlgorithmParameterSpec
kotlin.Any
   ↳ java.security.spec.EdDSAParameterSpec

A class used to specify EdDSA signature and verification parameters. All algorithm modes in RFC 8032: Edwards-Curve Digital Signature Algorithm (EdDSA) can be specified using combinations of the settings in this class.

  • If prehash is true, then the mode is Ed25519ph or Ed448ph
  • Otherwise, if a context is present, the mode is Ed25519ctx or Ed448
  • Otherwise, the mode is Ed25519 or Ed448

Summary

Public constructors

Construct an EdDSAParameterSpec by specifying whether the prehash mode is used.
EdDSAParameterSpec(prehash: Boolean, context: ByteArray!)

Construct an EdDSAParameterSpec by specifying a context and whether the prehash mode is used.
Public methods
open Optional<ByteArray!>!

Get the context that the signature will use.
open Boolean

Get whether the prehash mode is specified.

Public constructors

EdDSAParameterSpec

Added in API level VanillaIceCream
EdDSAParameterSpec(prehash: Boolean)

Construct an EdDSAParameterSpec by specifying whether the prehash mode is used. No context is provided so this constructor specifies a mode in which the context is null. Note that this mode may be different than the mode in which an empty array is used as the context.

Parameters
prehash Boolean: whether the prehash mode is specified.

EdDSAParameterSpec

Added in API level VanillaIceCream
EdDSAParameterSpec(
    prehash: Boolean, 
    context: ByteArray!)

Construct an EdDSAParameterSpec by specifying a context and whether the prehash mode is used. The context may not be null, but it may be an empty array. The mode used when the context is an empty array may not be the same as the mode used when the context is absent.

Parameters
prehash Boolean: whether the prehash mode is specified.
context ByteArray!: the context is copied and bound to the signature.
Exceptions
java.lang.NullPointerException if context is null.
java.security.InvalidParameterException if context length is greater than 255.

Public methods

getContext

Added in API level VanillaIceCream
open fun getContext(): Optional<ByteArray!>!

Get the context that the signature will use.

Return
Optional<ByteArray!>! Optional contains a copy of the context or empty if context is null.

isPrehash

Added in API level VanillaIceCream
open fun isPrehash(): Boolean

Get whether the prehash mode is specified.

Return
Boolean whether the prehash mode is specified.