Native android service implemented

client/android/src/com/wireguard/crypto/KeyPair.java

@@ -0,0 +1,52 @@
+/*
+ * Copyright © 2017-2019 WireGuard LLC. All Rights Reserved.
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+package com.wireguard.crypto;
+
+/**
+ * Represents a Curve25519 key pair as used by WireGuard.
+ * <p>
+ * Instances of this class are immutable.
+ */
+
+public class KeyPair {
+  private final Key privateKey;
+  private final Key publicKey;
+
+  /**
+   * Creates a key pair using a newly-generated private key.
+   */
+  public KeyPair() {
+    this(Key.generatePrivateKey());
+  }
+
+  /**
+   * Creates a key pair using an existing private key.
+   *
+   * @param privateKey a private key, used to derive the public key
+   */
+  public KeyPair(final Key privateKey) {
+    this.privateKey = privateKey;
+    publicKey = Key.generatePublicKey(privateKey);
+  }
+
+  /**
+   * Returns the private key from the key pair.
+   *
+   * @return the private key
+   */
+  public Key getPrivateKey() {
+    return privateKey;
+  }
+
+  /**
+   * Returns the public key from the key pair.
+   *
+   * @return the public key
+   */
+  public Key getPublicKey() {
+    return publicKey;
+  }
+}