java 3des 24位_java 中32位秘钥长度的 3des加密方法？

java

中 3des加密 默认是24位秘钥的

现在需求是 32位秘钥加密

尝试很多种方法 解决 结果都不正确

// 密钥

private final static String secretKey = "11111111111111111111111111111111";

// 向量

// private final static String iv = "01234567";

// 加解密统一使用的编码方式

private final static String encoding = "utf-8";

/**

* 3DES加密

*

* @param plainText 普通文本

* @return

* @throws Exception

*/

public static String encode(String plainText) throws Exception {

Key deskey = null;

DESedeKeySpec spec = new DESedeKeySpec(secretKey.getBytes());

SecretKeyFactory keyfactory = SecretKeyFactory.getInstance("desede");

deskey = keyfactory.generateSecret(spec);

Cipher cipher = Cipher.getInstance("desede/CBC/PKCS5Padding");

// IvParameterSpec ips = new IvParameterSpec(iv.getBytes());

cipher.init(Cipher.ENCRYPT_MODE, deskey);

byte[] encryptData = cipher.doFinal(plainText.getBytes(encoding));

return Deal8583.byte2HexStr(encryptData);

}

/**

* 3DES解密

*

* @param encryptText 加密文本

* @return

* @throws Exception

*/

public static String decode(String encryptText) throws Exception {

Key deskey = null;

DESedeKeySpec spec = new DESedeKeySpec(secretKey.getBytes());

SecretKeyFactory keyfactory = SecretKeyFactory.getInstance("desede");

deskey = keyfactory.generateSecret(spec);

Cipher cipher = Cipher.getInstance("desede/CBC/PKCS5Padding");

// IvParameterSpec ips = new IvParameterSpec(iv.getBytes());

cipher.init(Cipher.DECRYPT_MODE, deskey);

byte[] decryptData = cipher.doFinal(Base64.decode(encryptText));

return new String(decryptData, encoding);

}

我该 怎么处理？