public final class SecretKey

  1. Object
  2. Key
  3. SecretKey

A symmetric secret key. Used with Cipher (AES) and Hmac (via raw bytes). For asymmetric algorithms use PublicKey / PrivateKey.

Keys carry the raw key material plus the algorithm name they are intended for. They do not enforce length or strength – that is the caller’s responsibility, although KeyGenerator will produce keys of standard lengths.

Constructors

public SecretKey(String algorithm, byte[] keyBytes)Wraps existing key material.

Methods

public int getBitLength()Returns the length of the key in bits.

Inherited methods

From Key

getEncoded, getAlgorithm, getFormat

From Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait, clone

Constructor details

SecretKey

public SecretKey(String algorithm, byte[] keyBytes)
Wraps existing key material.

Parameters

algorithm String
algorithm identifier (e.g. “AES”)
keyBytes byte[]
raw key material – defensively copied

Method details

getBitLength

public int getBitLength()
Returns the length of the key in bits.