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package com.juick.server;
import com.juick.server.api.activity.model.objects.Person;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.core.io.Resource;
import org.springframework.util.Base64Utils;
import javax.net.ssl.KeyManagerFactory;
import java.io.IOException;
import java.io.InputStream;
import java.security.*;
import java.security.cert.Certificate;
import java.security.cert.CertificateException;
import java.security.spec.X509EncodedKeySpec;
import java.util.Arrays;
import java.util.stream.Collectors;
public class KeystoreManager {
private static final Logger logger = LoggerFactory.getLogger("ActivityPub");
private String keystorePassword;
private KeyStore ks;
public KeystoreManager(Resource keystore, String keystorePassword) {
this.keystorePassword = keystorePassword;
try (InputStream ksIs = keystore.getInputStream()) {
ks = KeyStore.getInstance("PKCS12");
ks.load(ksIs, keystorePassword.toCharArray());
KeyManagerFactory kmf = KeyManagerFactory.getInstance(KeyManagerFactory
.getDefaultAlgorithm());
kmf.init(ks, keystorePassword.toCharArray());
} catch (IOException | KeyStoreException | NoSuchAlgorithmException | UnrecoverableKeyException | CertificateException e) {
logger.error("Keystore error", e);
}
}
private KeyPair getKeyPair() {
Key privateKey;
try {
privateKey = ks.getKey("1", keystorePassword.toCharArray());
Certificate certificate = ks.getCertificate("1");
return new KeyPair(certificate.getPublicKey(), (PrivateKey) privateKey);
} catch (KeyStoreException | NoSuchAlgorithmException | UnrecoverableKeyException e) {
e.printStackTrace();
}
return null;
}
public PrivateKey getPrivateKey() {
return getKeyPair().getPrivate();
}
public PublicKey getPublicKey() {
return getKeyPair().getPublic();
}
public String getPublicKeyPem() {
String[] key = Base64Utils.encodeToString(getKeyPair().getPublic().getEncoded()).split("(?<=\\G.{64})");
return String.format("-----BEGIN PUBLIC KEY-----\n%s\n-----END PUBLIC KEY-----\n",
String.join("\n", key));
}
public static PublicKey publicKeyOf(Person person) {
String pubkeyPem = person.getPublicKey().getPublicKeyPem();
String[] rawKey = pubkeyPem.split("\\n");
String pubkeyData = String.join("", Arrays.asList(rawKey).subList(1, rawKey.length - 1));
try{
byte[] byteKey = Base64Utils.decodeFromString(pubkeyData);
X509EncodedKeySpec X509publicKey = new X509EncodedKeySpec(byteKey);
KeyFactory kf = KeyFactory.getInstance("RSA");
return kf.generatePublic(X509publicKey);
}
catch(Exception e){
e.printStackTrace();
}
return null;
}
}
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