CODEWITHSUNDEEP
javaencryptionaeskeystore
user3244519
user3244519

Reputation: 681

Storing AES Secret key using keystore in java

I am using Java keystore to store the secret key for AES encryption.

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.

Exception in thread "main" java.security.KeyStoreException: Uninitialized keystore
at java.security.KeyStore.setEntry(Unknown Source)

How to fix this error? Thanks in advance

Upvotes: 5

Views: 15650

Answers (1)

M Alok
M Alok

Reputation: 1081

According to the KeyStore documentation ,

Before a keystore can be accessed, it must be loaded.

In order to create an empty keystore, or if the keystore cannot be initialized from a stream, pass null as the stream argument.

so you are loading the KeyStore but what if a FileNotFoundException occures at fis = new java.io.FileInputStream("keyStoreName"); , hence if file does not exist we load the KeyStore with null values ,like , ks.load(null,null); .

Upvotes: 2

Related Questions