Package net.lingala.zip4j.crypto

Class AESEncrypter

java.lang.Object

net.lingala.zip4j.crypto.AESEncrypter

All Implemented Interfaces:

Encrypter

public class AESEncrypter
extends java.lang.Object
implements Encrypter

AES Encrypter supports AE-1 and AE-2 encryption using AES-CTR with either 128 or 256 Key Strength

Field Summary

Fields

Modifier and Type	Field	Description
private AESEngine	aesEngine
private byte[]	counterBlock
private byte[]	derivedPasswordVerifier
private boolean	finished
private byte[]	iv
private int	loopCount
private MacBasedPRF	mac
private int	nonce
private java.security.SecureRandom	random
private byte[]	saltBytes

Constructor Summary

Constructors

Constructor	Description
AESEncrypter(char[] password, AesKeyStrength aesKeyStrength, boolean useUtf8ForPassword)

Method Summary

Modifier and Type	Method	Description
int	encryptData(byte[] buff)
int	encryptData(byte[] buff, int start, int len)
private byte[]	generateSalt(int size)
byte[]	getDerivedPasswordVerifier()
byte[]	getFinalMac()
byte[]	getSaltBytes()
private void	init(char[] password, AesKeyStrength aesKeyStrength, boolean useUtf8ForPassword)

Methods inherited from class java.lang.Object

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

Field Detail

aesEngine

private AESEngine aesEngine

mac

private MacBasedPRF mac

random

private final java.security.SecureRandom random

finished

private boolean finished

nonce

private int nonce

loopCount

private int loopCount

iv

private final byte[] iv

counterBlock

private final byte[] counterBlock

derivedPasswordVerifier

private byte[] derivedPasswordVerifier

saltBytes

private byte[] saltBytes

Constructor Detail

AESEncrypter

public AESEncrypter(char[] password,
                    AesKeyStrength aesKeyStrength,
                    boolean useUtf8ForPassword)
             throws ZipException

Throws:

ZipException

Method Detail

init

private void init(char[] password,
                  AesKeyStrength aesKeyStrength,
                  boolean useUtf8ForPassword)
           throws ZipException

Throws:

ZipException

encryptData

public int encryptData(byte[] buff)
                throws ZipException

Specified by:

encryptData in interface Encrypter

Throws:

ZipException

encryptData

public int encryptData(byte[] buff,
                       int start,
                       int len)
                throws ZipException

Specified by:

encryptData in interface Encrypter

Throws:

ZipException

generateSalt

private byte[] generateSalt(int size)
                     throws ZipException

Throws:

ZipException

getFinalMac

public byte[] getFinalMac()

getDerivedPasswordVerifier

public byte[] getDerivedPasswordVerifier()

getSaltBytes

public byte[] getSaltBytes()