net.ymate.platform.commons.util

Class CodecUtils.CodecHelper

java.lang.Object

net.ymate.platform.commons.util.CodecUtils.CodecHelper

Direct Known Subclasses:

CodecUtils.AESCodecHelper, CodecUtils.PBECodecHelper, CodecUtils.RSACodecHelper

Enclosing class:

CodecUtils

public static class CodecUtils.CodecHelper
extends Object

Field Summary

Fields

Modifier and Type	Field and Description
protected String	CIPHER_ALGORITHM 加密/解密算法/工作模式/填充方式
protected String	KEY_ALGORITHM 密钥算法
protected int	KEY_SIZE

Constructor Summary

Constructors

Constructor and Description
CodecHelper(int keySize, String keyAlgorithm, String cipherAlgorithm)
CodecHelper(int keySize, String keyAlgorithm, String cipherAlgorithm, Provider provider)

Method Summary

Modifier and Type	Method and Description
byte[]	decrypt(byte[] data, byte[] key) 解密数据
String	decrypt(String data, String key)
byte[]	encrypt(byte[] data, byte[] key) 加密数据
String	encrypt(String data, String key)
protected Cipher	getCipherInstance()
byte[]	initKey() 生成密钥
String	initKeyToString()
Key	toKey(byte[] key) 转换密钥

Methods inherited from class java.lang.Object

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

Field Detail

KEY_ALGORITHM

protected final String KEY_ALGORITHM

密钥算法

CIPHER_ALGORITHM

protected final String CIPHER_ALGORITHM

加密/解密算法/工作模式/填充方式

KEY_SIZE

protected final int KEY_SIZE

Constructor Detail

CodecHelper

public CodecHelper(int keySize,
                   String keyAlgorithm,
                   String cipherAlgorithm)

CodecHelper

public CodecHelper(int keySize,
                   String keyAlgorithm,
                   String cipherAlgorithm,
                   Provider provider)

Method Detail

getCipherInstance

protected Cipher getCipherInstance()
                            throws NoSuchPaddingException,
                                   NoSuchAlgorithmException

Throws:

NoSuchPaddingException

NoSuchAlgorithmException

initKey

public byte[] initKey()
               throws Exception

生成密钥

Returns:

byte[] 二进制密钥

Throws:

Exception - if an error occurs.

initKeyToString

public String initKeyToString()
                       throws Exception

Throws:

Exception

toKey

public Key toKey(byte[] key)
          throws Exception

转换密钥

Parameters:

key - 二进制密钥

Returns:

Key 密钥

Throws:

Exception - if an error occurs.

encrypt

public byte[] encrypt(byte[] data,
                      byte[] key)
               throws Exception

加密数据

Parameters:

data - 待加密数据

key - 密钥

Returns:

byte[] 加密后的数据

Throws:

Exception - if an error occurs.

encrypt

public String encrypt(String data,
                      String key)
               throws Exception

Throws:

Exception

decrypt

public byte[] decrypt(byte[] data,
                      byte[] key)
               throws Exception

解密数据

Parameters:

data - 待解密数据

key - 密钥

Returns:

byte[] 解密后的数据

Throws:

Exception - if an error occurs.

decrypt

public String decrypt(String data,
                      String key)
               throws Exception

Throws:

Exception