Package org.springframework.security.crypto.encrypt

Class AesBytesEncryptor

java.lang.Object

org.springframework.security.crypto.encrypt.AesBytesEncryptor

All Implemented Interfaces:

BytesEncryptor

public final class AesBytesEncryptor
extends Object
implements BytesEncryptor

Encryptor that uses AES encryption.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static enum	AesBytesEncryptor.CipherAlgorithm

Constructor Summary

Constructors

Constructor	Description
AesBytesEncryptor(String password, CharSequence salt)	Constructs an encryptor that uses AES encryption.
AesBytesEncryptor(String password, CharSequence salt, BytesKeyGenerator ivGenerator)	Constructs an encryptor that uses AES encryption.
AesBytesEncryptor(String password, CharSequence salt, BytesKeyGenerator ivGenerator, AesBytesEncryptor.CipherAlgorithm alg)	Constructs an encryptor that uses AES encryption.
AesBytesEncryptor(SecretKey secretKey, BytesKeyGenerator ivGenerator, AesBytesEncryptor.CipherAlgorithm alg)	Constructs an encryptor that uses AES encryption.

Method Summary

Modifier and Type	Method	Description
byte[]	decrypt(byte[] encryptedBytes)	Decrypt the byte array.
byte[]	encrypt(byte[] bytes)	Encrypt the byte array.

Methods inherited from class java.lang.Object

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

Constructor Details

AesBytesEncryptor

public AesBytesEncryptor(String password,
 CharSequence salt)

Constructs an encryptor that uses AES encryption. Example: AesBytesEncryptor encryptor = new AesBytesEncryptor(yourPassword, 5c0744940b5c369b); Constructed encryptor uses a 16-byte IV and CBC mode encryption. To specify a custom length IV, use AesBytesEncryptor(String, CharSequence, BytesKeyGenerator). To specify both, a custom length IV and a different encryption mode, use AesBytesEncryptor(String, CharSequence, BytesKeyGenerator, CipherAlgorithm).

Parameters:

password - the password value

salt - the hex-encoded salt value

AesBytesEncryptor

public AesBytesEncryptor(String password,
 CharSequence salt,
 BytesKeyGenerator ivGenerator)

Constructs an encryptor that uses AES encryption. Example: AesBytesEncryptor encryptor = new AesBytesEncryptor(yourPassword, 5c0744940b5c369b, KeyGenerators.secureRandom(16)); Constructed encryptor uses CBC mode encryption. To specify a different encryption mode, use AesBytesEncryptor(String, CharSequence, BytesKeyGenerator, CipherAlgorithm).

Parameters:

password - the password value

salt - the hex-encoded salt value

ivGenerator - the generator used to generate the initialization vector

AesBytesEncryptor

public AesBytesEncryptor(String password,
 CharSequence salt,
 BytesKeyGenerator ivGenerator,
 AesBytesEncryptor.CipherAlgorithm alg)

Constructs an encryptor that uses AES encryption. Example: AesBytesEncryptor encryptor = new AesBytesEncryptor(yourPassword, 5c0744940b5c369b, KeyGenerators.secureRandom(16), CipherAlgorithm.GCM);

Parameters:

password - the password value

salt - the hex-encoded salt value

ivGenerator - the generator used to generate the initialization vector

alg - the AesBytesEncryptor.CipherAlgorithm to be used

AesBytesEncryptor

public AesBytesEncryptor(SecretKey secretKey,
 BytesKeyGenerator ivGenerator,
 AesBytesEncryptor.CipherAlgorithm alg)

Constructs an encryptor that uses AES encryption.

Parameters:

secretKey - the secret (symmetric) key

ivGenerator - the generator used to generate the initialization vector. If null, then a default algorithm will be used based on the provided AesBytesEncryptor.CipherAlgorithm

alg - the AesBytesEncryptor.CipherAlgorithm to be used

Method Details

encrypt

public byte[] encrypt(byte[] bytes)

Description copied from interface: BytesEncryptor

Encrypt the byte array.

Specified by:

encrypt in interface BytesEncryptor

decrypt

public byte[] decrypt(byte[] encryptedBytes)

Description copied from interface: BytesEncryptor

Decrypt the byte array.

Specified by:

decrypt in interface BytesEncryptor