From 7aaa3f9a29c280f01c677c918932620be45cdbd7 Mon Sep 17 00:00:00 2001
From: Vitaly Takmazov
Date: Thu, 8 Nov 2018 21:38:27 +0300
Subject: Merge everything into single Spring Boot application

---
 .../java/com/juick/server/KeystoreManager.java     | 92 ++++++++++++++++++++++
 1 file changed, 92 insertions(+)
 create mode 100644 src/main/java/com/juick/server/KeystoreManager.java

(limited to 'src/main/java/com/juick/server/KeystoreManager.java')

diff --git a/src/main/java/com/juick/server/KeystoreManager.java b/src/main/java/com/juick/server/KeystoreManager.java
new file mode 100644
index 00000000..97c3a224
--- /dev/null
+++ b/src/main/java/com/juick/server/KeystoreManager.java
@@ -0,0 +1,92 @@
+package com.juick.server;
+
+import com.juick.server.api.activity.model.objects.Person;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.stereotype.Component;
+import org.springframework.util.Base64Utils;
+
+import javax.annotation.PostConstruct;
+import javax.net.ssl.KeyManagerFactory;
+import java.io.FileInputStream;
+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;
+
+@Component
+public class KeystoreManager {
+    private static final Logger logger = LoggerFactory.getLogger("com.juick.server");
+    @Value("${keystore:../juick.p12}")
+    private String keystore;
+    @Value("${keystore_password:secret}")
+    private String keystorePassword;
+
+    private KeyStore ks;
+
+    private KeyManagerFactory kmf;
+
+    @PostConstruct
+    public void init() {
+        try (InputStream ksIs = new FileInputStream(keystore)) {
+            ks = KeyStore.getInstance("PKCS12");
+            ks.load(ksIs, keystorePassword.toCharArray());
+            kmf = KeyManagerFactory.getInstance(KeyManagerFactory
+                    .getDefaultAlgorithm());
+            kmf.init(ks, keystorePassword.toCharArray());
+        } catch (IOException | KeyStoreException | NoSuchAlgorithmException | UnrecoverableKeyException | CertificateException e) {
+            logger.error("Keystore error", e);
+        }
+    }
+
+    public KeyStore getKeystore() {
+        return ks;
+    }
+
+    public KeyManagerFactory getKeymanagerFactory() {
+        return kmf;
+    }
+
+    private KeyPair getKeyPair() {
+        Key privateKey = null;
+        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",
+                Arrays.asList(key).stream().collect(Collectors.joining("\n")));
+    }
+    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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