//例如

cipher.init(Cipher.ENCRYPT_MODE,convertSecretKey);
byte[] result="哈哈哈".getBytes();
for(int i=0;i<5;i++){
    result=cipher.doFinal(result);
    System.out.println(HexBin.encode(result));
}

//解密
cipher.init(Cipher.DECRYPT_MODE,convertSecretKey);
for(int i=0;i<5;i++){
    result=cipher.doFinal(result);
    System.out.println(new String(result));
}
//最后能解密成功得到最开始的值