다음은 RSA 암호화가있는 jks 키 저장소를 사용하여 함께 해결할 수있는 솔루션입니다.

import javax.crypto.Cipher;
import javax.xml.bind.DatatypeConverter;
import java.security.Key;
import java.security.KeyPair;
import java.security.KeyPairGenerator;
import java.security.KeyStore;
import java.security.cert.Certificate;

public class Main {

    public static void main(String[] args) {

        byte[] txt = "This is a secret message for your own eyes only".getBytes();
        byte[] encText;
        try{

            // Load the keystore
            KeyStore ks = KeyStore.getInstance(KeyStore.getDefaultType());
            char[] password = "keystorePassword".toCharArray();
            java.io.FileInputStream fis = new java.io.FileInputStream("/path/to/keystore/myKeyStore.jks");
            ks.load(fis, password);
            fis.close();

            Key rsakey = ks.getKey("mykeyalias", password);
            Cipher cipher = Cipher.getInstance("RSA/ECB/PKCS1Padding");

            // Encrypt
            Certificate cert = ks.getCertificate("mykeyalias");
            try
            {
                cipher.init(Cipher.ENCRYPT_MODE, cert.getPublicKey());
                encText = cipher.doFinal(txt);
                System.out.println(encText.toString());
            }
            catch (Throwable e)
            {
                e.printStackTrace();
                return;
            }

            // Decrypt
            cipher.init(Cipher.DECRYPT_MODE, rsakey);
            String decrypted = new String(cipher.doFinal(encText));
            System.out.println(decrypted);


        } catch (Exception e) {
            System.out.println("error" + e);
        }
}