ch.epfl.dedis.calypso

Class Encryption.KeyIv

java.lang.Object

ch.epfl.dedis.calypso.Encryption.KeyIv

Enclosing class:

Encryption

public static class Encryption.KeyIv
extends Object

KeyIV represents a secret key and an IV.

Constructor Summary

Constructors

Constructor and Description
KeyIv() Default construct KeyIV with a random key and IV.
KeyIv(byte[] keyMaterial) Construct KeyIV from some keyMaterial, which is the concatenation of IV and Key.

Method Summary

Modifier and Type	Method and Description
byte[]	getKeyMaterial() Getter for the key material, which is a concatenation of IV and the key.

Methods inherited from class java.lang.Object

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

Constructor Detail

KeyIv

public KeyIv(byte[] keyMaterial)
      throws CothorityCryptoException

Construct KeyIV from some keyMaterial, which is the concatenation of IV and Key. The IV must not repeat. If there is no need to use a specific IV and Key, please use the default constructor, and then use extractKeyMaterial to get the keyMaterial.

Parameters:

keyMaterial - must be 28 bytes, the first 12 bytes is used as the IV, the second 16 bytes is the actual key.

Throws:

CothorityCryptoException - is something goes wrong.

KeyIv

public KeyIv()

Default construct KeyIV with a random key and IV. Use extractKeyMaterial to get the keyMaterial back.

Method Detail

getKeyMaterial

public byte[] getKeyMaterial()

Getter for the key material, which is a concatenation of IV and the key.