将私钥和3个主题的证书存储到密钥库JAVA

Question

我想将3个证书和3个私钥保存到密钥库中。

KeyStore store;
        PrivateKeyEntry CAprivKeyEntry = new PrivateKeyEntry(pair.getPrivate(), (X509Certificate[]) chain);
        TrustedCertificateEntry CAcertEntry = new TrustedCertificateEntry(caCert);
        PrivateKeyEntry interPrivKeyEntry = new PrivateKeyEntry(interPair.getPrivate(), chain);
        TrustedCertificateEntry interCertEntry = new TrustedCertificateEntry(interCert);
        PrivateKeyEntry subjectPrivKeyEntry = new PrivateKeyEntry(subPair.getPrivate(), chain);
        TrustedCertificateEntry subjectCertEntry = new TrustedCertificateEntry(subjectCert);


        try {
            store = KeyStore.getInstance(storeType);
            store.load(null, storePassword.toCharArray());
            store.setEntry("CA", CAprivKeyEntry, new KeyStore.PasswordProtection(storePassword.toCharArray()));  
            store.setEntry("CA", CAcertEntry, null);

            store.setEntry("Intermediate", interPrivKeyEntry, new KeyStore.PasswordProtection(storePassword.toCharArray()));  
            store.setEntry("Intermediate", interCertEntry, null);

            store.setEntry("Subject", subjectPrivKeyEntry, new KeyStore.PasswordProtection(storePassword.toCharArray()));  
            store.setEntry("Subject", subjectCertEntry, null);

            FileOutputStream out = new FileOutputStream(new File(storePath));

            store.store(out, storePassword.toCharArray());


        } catch (Exception e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } 

它带来KeyStoreException：无法覆盖自己的证书
我该如何解决这个问题？