com.baidubce.services.iothisk.device.crypto

Class AesEncrypt

java.lang.Object

com.baidubce.services.iothisk.device.crypto.AesEncrypt

public class AesEncrypt
extends Object

Provides AES crypto functions

Constructor Summary

Constructors

Constructor and Description
AesEncrypt()

Method Summary

Modifier and Type	Method and Description
static byte[]	decrypt(byte[] data, SecretKey key, IvParameterSpec iv, String cipherName) Decrypt message with specified secret key, cipher name, init vector and cipher name.
static byte[]	decryptByCTRNoPadding(byte[] data, byte[] key, byte[] iv) Decrypt message with AES/CTR/NoPadding cipher
static byte[]	encrypt(byte[] data, SecretKey key, IvParameterSpec iv, String cipherName) Encrypt message with specified secret key, cipher name, init vector and cipher name.
static byte[]	encrypt(byte[] data, SecretKey key, String cipherName) Encrypt message with specified secret key and cipher name.
static byte[]	encryptByCTRNoPadding(byte[] data, byte[] key, byte[] iv) Encrypt message with AES/CTR/NoPadding cipher
static SecretKey	loadKey(byte[] key, String algorithm) Load secret key with provided key data and specified algorithm

Methods inherited from class java.lang.Object

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

Constructor Detail

AesEncrypt

public AesEncrypt()

Method Detail

loadKey

public static SecretKey loadKey(byte[] key,
                                String algorithm)

Load secret key with provided key data and specified algorithm

Parameters:

key - specified key data in btye array

algorithm - specified algorithm

Returns:

secret key

encrypt

public static byte[] encrypt(byte[] data,
                             SecretKey key,
                             String cipherName)

Encrypt message with specified secret key and cipher name.

Parameters:

data - specified message data in byte array

key - specified secret key

cipherName - specified cipher name

Returns:

cipher message in byte array

encrypt

public static byte[] encrypt(byte[] data,
                             SecretKey key,
                             IvParameterSpec iv,
                             String cipherName)

Encrypt message with specified secret key, cipher name, init vector and cipher name.

Parameters:

data - specified message data in byte array

key - specified secret key

iv - specified init vector

cipherName - specified cipher name

Returns:

cipher message in byte array

decrypt

public static byte[] decrypt(byte[] data,
                             SecretKey key,
                             IvParameterSpec iv,
                             String cipherName)

Decrypt message with specified secret key, cipher name, init vector and cipher name.

Parameters:

data - specified cipher message data in byte array

key - specified secret key

iv - specified init vector

cipherName - specified cipher name

Returns:

plain message in byte array

encryptByCTRNoPadding

public static byte[] encryptByCTRNoPadding(byte[] data,
                                           byte[] key,
                                           byte[] iv)

Encrypt message with AES/CTR/NoPadding cipher

Parameters:

data - specified message data in byte array

key - specified key in byte array

iv - specified init vector

Returns:

cipher message in byte array

decryptByCTRNoPadding

public static byte[] decryptByCTRNoPadding(byte[] data,
                                           byte[] key,
                                           byte[] iv)

Decrypt message with AES/CTR/NoPadding cipher

Parameters:

data - specified message data in byte array

key - specified key in byte array

iv - specified init vector

Returns:

plain message in byte array