java - 如何将 GeneratedKey 添加到 config.properties 文件？

Question

我正在尝试加密和解密密码，到目前为止，这些生成的 key 一直很好。现在我需要将这个 key 存储在属性文件中，但是当我添加 key 时，它看起来像这样:

#Tue Nov 01 08:22:52 EET 2016
KEY=\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000

所以我怀疑我的代码可能有问题？!？!

还有一部分是我的代码=

private byte[] key = new byte[16];

public void addProperties(String x, String z) {
    Properties properties = new Properties();
    String propertiesFileName = "config.properties";
    try {
        OutputStream out = new FileOutputStream(propertiesFileName);
        properties.setProperty(x, z);
        properties.store(out, null);
    } catch (IOException e) {
        e.printStackTrace();
    }
}

public void generateKey() {
    KeyGenerator keygen;
    SecretKey secretKey;
    byte[] keybyte = new byte[64];
    try {
        keygen = KeyGenerator.getInstance("AES");
        keygen.init(128);
        secretKey = keygen.generateKey();
        keybyte = secretKey.getEncoded();
        key = keybyte;

 //THIS METHOD ADDING PROP TO PROPERTIES FILE
        addProperties("KEY", new String(key));

    } catch (NoSuchAlgorithmException e) {
        e.printStackTrace();
    }

}

感谢您的帮助。所有答案均可接受。

Answer 1

KeyGenerator#generateKey() 的返回类型为 SecretKey来自 javadocs

Keys that implement this interface return the string RAW as their encoding format (see getFormat), and return the raw key bytes as the result of a getEncoded method call. (The getFormat and getEncoded methods are inherited from the java.security.Key parent interface.)

So you need to convert them and there is already asked question on this


String encodedKey = Base64.getEncoder().encodeToString(secretKey.getEncoded());

SecretKey originalKey = new SecretKeySpec(decodedKey, 0, decodedKey.length, "AES");