java - how to store a key in keystore

Question

I\'ve need to store 2 keys into KeyStore Here\'s the relevant code:

KeyStore ks = KeyStore.getInstance(\"JKS\");
String password = \"password\";
char[] ksPass =          


        

Answer 1

You need to also provide the certificate (public key) for the private key entry. For a certificate signed by a CA, the chain is the CA's certificate and the end-certificate. For a self-signed certificate you only have the self-signed certificate
Example:

KeyPair keyPair = ...;//You already have this  
X509Certificate certificate = generateCertificate(keyPair);  
KeyStore keyStore = KeyStore.getInstance("JKS");  
keyStore.load(null,null);  
Certificate[] certChain = new Certificate[1];  
certChain[0] = certificate;  
keyStore.setKeyEntry("key1", (Key)keyPair.getPrivate(), pwd, certChain);  

To generate the certificate follow this link:
Example:

public X509Certificate generateCertificate(KeyPair keyPair){  
   X509V3CertificateGenerator cert = new X509V3CertificateGenerator();   
   cert.setSerialNumber(BigInteger.valueOf(1));   //or generate a random number  
   cert.setSubjectDN(new X509Principal("CN=localhost"));  //see examples to add O,OU etc  
   cert.setIssuerDN(new X509Principal("CN=localhost")); //same since it is self-signed  
   cert.setPublicKey(keyPair.getPublic());  
   cert.setNotBefore();  
   cert.setNotAfter();  
   cert.setSignatureAlgorithm("SHA1WithRSAEncryption");   
    PrivateKey signingKey = keyPair.getPrivate();    
   return cert.generate(signingKey, "BC");  
}