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/OpenJDK 21

Class KEM.Encapsulated

java.lang.Object
javax.crypto.KEM.Encapsulated
Enclosing class:
KEM
public static final class KEM.Encapsulated extends Object
This class specifies the return value of the encapsulate method of a Key Encapsulation Mechanism (KEM), which includes the shared secret (as a SecretKey), the key encapsulation message, and optional parameters.

Note: the key encapsulation message can be also referred to as ciphertext.

Since:
21
See Also:

Constructor Summary

Constructor Description
Encapsulated(SecretKey key, byte[] encapsulation, byte[] params)
Constructs an Encapsulated object.

Method Summary

Modifier and Type Method Description
byte[] encapsulation()
Returns the key encapsulation message.
SecretKey key()
Returns the SecretKey.
byte[] params()
Returns the optional parameters in a byte array.

Methods declared in class java.lang.Object

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

Constructor Details

Encapsulated

public Encapsulated(SecretKey key, byte[] encapsulation, byte[] params)
Constructs an Encapsulated object.
Parameters:
key - the shared secret as a key, must not be null.
encapsulation - the key encapsulation message, must not be null. The contents of the array are copied to protect against subsequent modification.
params - optional parameters, can be null. The contents of the array are copied to protect against subsequent modification.
Throws:
NullPointerException - if key or encapsulation is null

Method Details

key

public SecretKey key()
Returns the SecretKey.
Returns:
the secret key

encapsulation

public byte[] encapsulation()
Returns the key encapsulation message.
Returns:
the key encapsulation message. A new copy of the byte array is returned.

params

public byte[] params()
Returns the optional parameters in a byte array.
Returns:
the optional parameters in a byte array or null if not specified. A new copy of the byte array is returned.

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Documentation extracted from Debian's OpenJDK Development Kit package.
Licensed under the GNU General Public License, version 2, with the Classpath Exception.
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https://docs.oracle.com/en/java/javase/21/docs/api/java.base/javax/crypto/KEM.Encapsulated.html