我目前正在学习Java的加密/解密技术,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过程中加载它。在我的调用类中,它调用构造函数,下面是它的代码:
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());
}
}
在调用类中启动此代码后,它返回的错误如下:keystore (The system cannot find the file specified)
在我的代码中,我创建了文件,那么为什么它会有问题呢?我查看了我的项目文件夹,它没有保存在那里,那么我必须做什么才能创建、存储和使用这个文件,而不会出现问题?
发布于 2018-06-01 06:04:44
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
吧?类似于下面处理FileOutputStream
的方式工作得很好:
try (FileInputStream fis = new FileInputStream(f)) {
keyStore.load(fis, "password".toCharArray());
}
作为参考,还有另一个错误等待着你。尝试在JKS密钥库中存储AES对称密钥会导致以下错误:
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存储类型只支持公钥/私钥- also here。
有了新的JCEKS密钥库,示例代码就可以正常工作了:
File f = new File("keystore.jceks");
KeyStore keyStore = KeyStore.getInstance("JCEKS");
https://stackoverflow.com/questions/50630811
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