Added ProxyKeys standalone for generating proxy keys

src/main/java/org/qora/ProxyKeys.java

@@ -0,0 +1,41 @@
+package org.qora;
+
+import java.io.IOException;
+import java.security.Security;
+
+import org.bouncycastle.jce.provider.BouncyCastleProvider;
+import org.bouncycastle.jsse.provider.BouncyCastleJsseProvider;
+import org.qora.account.PrivateKeyAccount;
+import org.qora.account.PublicKeyAccount;
+import org.qora.utils.Base58;
+
+public class ProxyKeys {
+
+	private static void usage() {
+		System.err.println("Usage: ProxyKeys <private-key> <public-key>");
+		System.err.println("Example: ProxyKeys pYQ6DpQBJ2n72TCLJLScEvwhf3boxWy2kQEPynakwpj 6rNn9b3pYRrG9UKqzMWYZ9qa8F3Zgv2mVWrULGHUusb");
+		System.exit(1);
+	}
+
+	public static void main(String argv[]) throws IOException {
+		if (argv.length != 2)
+			usage();
+
+		Security.insertProviderAt(new BouncyCastleProvider(), 0);
+		Security.insertProviderAt(new BouncyCastleJsseProvider(), 1);
+
+		PrivateKeyAccount privateAccount = new PrivateKeyAccount(null, Base58.decode(argv[0]));
+		PublicKeyAccount publicAccount = new PublicKeyAccount(null, Base58.decode(argv[1]));
+
+		byte[] proxyPrivateKey = privateAccount.getProxyPrivateKey(publicAccount.getPublicKey());
+
+		PrivateKeyAccount proxyAccount = new PrivateKeyAccount(null, proxyPrivateKey);
+
+		System.out.println(String.format("Private key account: %s", privateAccount.getAddress()));
+		System.out.println(String.format("Public key account: %s", publicAccount.getAddress()));
+
+		System.out.println(String.format("Proxy private key: %s", Base58.encode(proxyAccount.getPrivateKey())));
+		System.out.println(String.format("Proxy public key: %s", Base58.encode(proxyAccount.getPublicKey())));
+	}
+
+}