Class HKDFParameterSpec.ExtractThenExpand

java.lang.Object
javax.crypto.spec.HKDFParameterSpec.ExtractThenExpand
All Implemented Interfaces:
AlgorithmParameterSpec, HKDFParameterSpec
Enclosing interface:
HKDFParameterSpec
public static final class HKDFParameterSpec.ExtractThenExpand extends Object implements HKDFParameterSpec
Defines the input parameters of an Extract-then-Expand operation as defined in RFC 5869.
Since:
25

  • Nested Class Summary

    Nested classes/interfaces declared in interface HKDFParameterSpec

    HKDFParameterSpec.Builder, HKDFParameterSpec.Expand, HKDFParameterSpec.Extract, HKDFParameterSpec.ExtractThenExpand
    Modifier and Type
    Interface
    Description
    static final class 
    HKDFParameterSpec.Builder
    This Builder builds Extract and ExtractThenExpand objects.
    static final class 
    HKDFParameterSpec.Expand
    Defines the input parameters of an Expand operation as defined in RFC 5869.
    static final class 
    HKDFParameterSpec.Extract
    Defines the input parameters of an Extract operation as defined in RFC 5869.
    static final class 
    HKDFParameterSpec.ExtractThenExpand
    Defines the input parameters of an Extract-then-Expand operation as defined in RFC 5869.

  • Method Summary

    Modifier and Type
    Method
    Description
    List<SecretKey>
    ikms()
    Returns an unmodifiable List of input keying material values in the order they were added.
    byte[]
    info()
    Returns the optional context and application specific information.
    int
    length()
    Returns the length of the output keying material.
    List<SecretKey>
    salts()
    Returns an unmodifiable List of salt values in the order they were added.

    Methods declared in class Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
    Modifier and Type
    Method
    Description
    protected Object
    clone()
    Answers a new instance of the same class as the receiver, whose slots have been filled in with the values in the slots of the receiver.
    boolean
    equals(Object o)
    Compares the argument to the receiver, and answers true if they represent the same object using a class specific comparison.
    protected void
    finalize()
    Deprecated, for removal: This API element is subject to removal in a future version.
    May cause performance issues, deadlocks and hangs.
    final Class<? extends Object>
    getClass()
    Answers the unique instance of java.lang.Class which represents the class of the receiver.
    int
    hashCode()
    Answers an integer hash code for the receiver.
    final void
    notify()
    Causes one thread which is waiting on the receiver to be made ready to run.
    final void
    notifyAll()
    Causes all threads which are waiting on the receiver to be made ready to run.
    String
    toString()
    Answers a string containing a concise, human-readable description of the receiver.
    final void
    wait()
    Causes the thread which sent this message to be made not ready to run pending some change in the receiver (as indicated by notify or notifyAll).
    final void
    wait(long time)
    Causes the thread which sent this message to be made not ready to run either pending some change in the receiver (as indicated by notify or notifyAll) or the expiration of the timeout.
    final void
    wait(long time, int frac)
    Causes the thread which sent this message to be made not ready to run either pending some change in the receiver (as indicated by notify or notifyAll) or the expiration of the timeout.

  • Method Details

    • ikms

      public List<SecretKey> ikms()
      Returns an unmodifiable List of input keying material values in the order they were added. Returns an empty list if there are no input keying material values.

      Input keying material values added by HKDFParameterSpec.Builder.addIKM(byte[]) are converted to a SecretKeySpec object. Empty arrays are discarded.

      Implementation Note:
      An HKDF implementation should concatenate the input keying materials into a single value to be used in the HKDF-Extract phase.
      Returns:
      the unmodifiable List of input keying material values

    • salts

      public List<SecretKey> salts()
      Returns an unmodifiable List of salt values in the order they were added. Returns an empty list if there are no salt values.

      Salt values added by HKDFParameterSpec.Builder.addSalt(byte[]) are converted to a SecretKeySpec object. Empty arrays are discarded.

      Implementation Note:
      An HKDF implementation should concatenate the salts into a single value to be used in the HKDF-Extract phase.
      Returns:
      the unmodifiable List of salt values

    • info

      public byte[] info()
      Returns the optional context and application specific information.
      Returns:
      a clone of the optional context and application specific information, or null if not specified

    • length

      public int length()
      Returns the length of the output keying material.
      Returns:
      the length of the output keying material