From c2fcf2370dc8c3137ea77ba94f6a12f1ab01a415 Mon Sep 17 00:00:00 2001
From: Simon Rettberg
Date: Tue, 14 Oct 2014 19:20:26 +0200
Subject: Implement registerSatellite RPC

---
 .../java/org/openslx/imagemaster/util/Util.java    | 48 ++++++++++++++++++++++
 1 file changed, 48 insertions(+)

(limited to 'src/main/java/org/openslx/imagemaster/util')

diff --git a/src/main/java/org/openslx/imagemaster/util/Util.java b/src/main/java/org/openslx/imagemaster/util/Util.java
index ffd3106..a524953 100644
--- a/src/main/java/org/openslx/imagemaster/util/Util.java
+++ b/src/main/java/org/openslx/imagemaster/util/Util.java
@@ -1,6 +1,11 @@
 package org.openslx.imagemaster.util;
 
 import java.io.File;
+import java.math.BigInteger;
+import java.security.Key;
+import java.security.interfaces.RSAPrivateKey;
+import java.security.interfaces.RSAPublicKey;
+import java.util.Arrays;
 import java.util.Random;
 
 import org.apache.log4j.Logger;
@@ -120,6 +125,21 @@ public class Util
 		}
 	}
 
+	/**
+	 * Tries to parse a bigint. Returns null on error.
+	 * 
+	 * @param s The strig to parse
+	 * @return The parsed bigint
+	 */
+	public static BigInteger tryToParseBigInt( String s )
+	{
+		try {
+			return new BigInteger( s );
+		} catch ( NumberFormatException e ) {
+			return null;
+		}
+	}
+
 	public static int getNumberOfBlocks( long fileSize, int blockSize )
 	{
 		int blocks = (int) ( fileSize / blockSize );
@@ -136,4 +156,32 @@ public class Util
 		return fileName;
 	}
 
+	/**
+	 * Checks whether the two given keys are equal. Works for
+	 * public and private keys.
+	 * 
+	 * @param k1 first key
+	 * @param k2 second key
+	 * @return true if equal
+	 */
+	public static boolean keysEqual( Key k1, Key k2 )
+	{
+		if ( k1 instanceof RSAPublicKey && k2 instanceof RSAPublicKey )
+		{
+			RSAPublicKey rsa1 = (RSAPublicKey)k1;
+			RSAPublicKey rsa2 = (RSAPublicKey)k2;
+			return rsa1.getModulus().equals( rsa2.getModulus() )
+					&& rsa1.getPublicExponent().equals( rsa2.getPublicExponent() );
+		}
+
+		if ( k1 instanceof RSAPrivateKey && k2 instanceof RSAPrivateKey )
+		{
+			RSAPrivateKey rsa1 = (RSAPrivateKey)k1;
+			RSAPrivateKey rsa2 = (RSAPrivateKey)k2;
+			return rsa1.getModulus().equals( rsa2.getModulus() )
+					&& rsa1.getPrivateExponent().equals( rsa2.getPrivateExponent() );
+		}
+		return Arrays.equals( k1.getEncoded(), k2.getEncoded() );
+	}
+
 }
-- 
cgit v1.2.3-55-g7522