系统找不到指定的文件试图创建 .jks 文件

Question

我目前正在 Java 中学习 encryption/decryption 技术，我遇到的一个主要问题是将密钥存储在 .jks 文件中并能够在不同的启动期间加载它。在我的调用中 class 它调用构造函数，这是它的代码：

public Encrypt_Decrypt() throws NoSuchAlgorithmException, NoSuchPaddingException
{
    Cipher cipher = Cipher.getInstance("AES");
    SecureRandom randomSecureRandom = SecureRandom.getInstance("SHA1PRNG");
    byte[] iv = new byte[cipher.getBlockSize()];
    randomSecureRandom.nextBytes(iv);
    IvParameterSpec ivParams = new IvParameterSpec(iv);
    ivSpec = ivParams;

    SecretKey secretKey = KeyGenerator.getInstance("AES").generateKey();
    byte[] keyBytes = secretKey.getEncoded();
    SecretKeySpec sks = new SecretKeySpec(keyBytes, "AES");
    key = sks;
    KeyStore.SecretKeyEntry entry = new KeyStore.SecretKeyEntry(key);
    KeyStore.ProtectionParameter protParam = new KeyStore.PasswordProtection("password".toCharArray());
    try
    {
        File f = new File("keystore.jks");
        KeyStore keyStore = KeyStore.getInstance("JKS");
        java.io.FileInputStream fis = null;
        try
        {
            fis = new java.io.FileInputStream("keystore");
        }
        finally
        {
            if (fis != null)
            {
                fis.close();
            }
        }
        keyStore.load(fis, "password".toCharArray());

        keyStore.setEntry("key", entry, protParam);

        try (FileOutputStream fout = new FileOutputStream(f))
        {
            keyStore.store(fout, "password".toCharArray());
            ;
        }
    }
    catch (Exception e)
    {
        System.out.println(e.getMessage());
    }
}

在调用 class 中启动此代码后，这是错误 returns： keystore (The system cannot find the file specified)

在我的代码中我创建了文件，为什么它有问题？我查看了我的项目文件夹，发现它没有保存在那里，所以我需要做什么才能顺利创建、存储和使用这个文件？

Answer 1

keystore (The system cannot find the file specified) 消息与此行相关：

new java.io.FileInputStream("keystore");

看起来应该一直在使用File f？类似于下面 FileOutputStream 的处理方式效果很好：

try (FileInputStream fis = new FileInputStream(f)) {
    keyStore.load(fis, "password".toCharArray());
}

供参考，还有另一个错误等在那里。尝试将 AES 对称密钥存储在 JKS 密钥库中会导致此错误：

java.security.KeyStoreException: Cannot store non-PrivateKeys
    at sun.security.provider.JavaKeyStore.engineSetKeyEntry(JavaKeyStore.java:258)
    at sun.security.provider.JavaKeyStore$JKS.engineSetKeyEntry(JavaKeyStore.java:56)
    at java.security.KeyStoreSpi.engineSetEntry(KeyStoreSpi.java:550)
    at sun.security.provider.KeyStoreDelegator.engineSetEntry(KeyStoreDelegator.java:179)
    at sun.security.provider.JavaKeyStore$DualFormatJKS.engineSetEntry(JavaKeyStore.java:70)
    at java.security.KeyStore.setEntry(KeyStore.java:1557)
    at KeystoreTest.main(KeystoreTest.java:44)

这是因为 JKS 存储类型仅支持 public/private 键 - also here.

使用新的 JCEKS 密钥库，您的示例代码可以正常工作：

File f = new File("keystore.jceks");
KeyStore keyStore = KeyStore.getInstance("JCEKS");

系统找不到指定的文件试图创建 .jks 文件

The system cannot find the file specified trying to create .jks file

java

encryption

keystore