在java中使用密钥库存储AES密钥
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Storing AES Secret key using keystore in java
提问by user3244519
I am using Java keystore to store the secret key for AES encryption.
我正在使用 Java 密钥库来存储 AES 加密的密钥。
final String strToEncrypt = "Hello World";
KeyGenerator kg = KeyGenerator.getInstance("AES");
kg.init(128);
SecretKey sk = kg.generateKey();
String secretKey = String.valueOf(Hex.encodeHex(sk.getEncoded()));
//Storing AES Secret key in keystore
KeyStore ks = KeyStore.getInstance("JCEKS");
char[] password = "keystorepassword".toCharArray();
java.io.FileInputStream fis = null;
try {
fis = new java.io.FileInputStream("keyStoreName");
ks.load(fis, password);
} finally {
if (fis != null) {
fis.close();
}
KeyStore.ProtectionParameter protParam =
new KeyStore.PasswordProtection(password);
KeyStore.SecretKeyEntry skEntry = new KeyStore.SecretKeyEntry(sk);
ks.setEntry("secretKeyAlias", skEntry, protParam);
But i am getting following Exception.
但我正在关注异常。
Exception in thread "main" java.security.KeyStoreException: Uninitialized keystore
at java.security.KeyStore.setEntry(Unknown Source)
线程“main”中的异常 java.security.KeyStoreException：java.security.KeyStore.setEntry 处的未初始化密钥库
（未知来源）
How to fix this error? Thanks in advance
如何修复此错误？提前致谢
回答by Alok Mishra
According to the KeyStoredocumentation ,
根据KeyStore文档，
Before a keystore can be accessed, it must be
loaded.
在可以访问密钥库之前，它必须是
loaded.
so you are loading the KeyStore but what if a FileNotFoundExceptionoccures at
fis = new java.io.FileInputStream("keyStoreName");, hence if file does not exist we load the KeyStore with nullvalues ,like , ks.load(null,null);.
所以你正在加载 KeyStore 但如果发生FileNotFoundException在
fis = new java.io.FileInputStream("keyStoreName");，因此如果文件不存在，我们会加载 KeyStore 的null值，如 , ks.load(null,null);。
