lol

src/zutil/Hasher.java

@@ -0,0 +1,64 @@
+package zutil;
+
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.Serializable;
+import java.math.BigInteger;
+import java.security.MessageDigest;
+import java.security.NoSuchAlgorithmException;
+
+import sun.misc.BASE64Encoder;
+
+public class Hasher {
+	
+	/**
+	 * Returns a hash of a file
+	 * 
+	 * @param file The path to the file
+	 * @param hashType The hash type
+	 * @return A String with the hash
+	 * @throws NoSuchAlgorithmException
+	 * @throws IOException 
+	 */
+	public static String hash(File file, String hashType) throws NoSuchAlgorithmException, IOException {
+		MessageDigest digest = MessageDigest.getInstance(hashType);//"MD5"
+		InputStream is = new FileInputStream(file);
+		String output = "";
+		byte[] buffer = new byte[8192];
+		int read = 0;
+		try {
+			while( (read = is.read(buffer)) > 0) {
+				digest.update(buffer, 0, read);
+			}		
+			byte[] md5sum = digest.digest();
+			BigInteger bigInt = new BigInteger(1, md5sum);
+			output = bigInt.toString(16);
+		}
+		catch(IOException e) {
+			throw new RuntimeException("Unable to process file for MD5", e);
+		}
+		is.close();
+		
+		MultiPrintStream.out.println("File Hash: "+output);
+		return output;
+	}
+
+	/**
+	 * Returns the hash of the given object
+	 * 
+	 * @param object The object to hash
+	 * @param hashType The hash method
+	 * @return String containing the hash
+	 * @throws NoSuchAlgorithmException
+	 */
+	public static String hash(Serializable object, String hashType) throws NoSuchAlgorithmException {
+		MessageDigest md = null;
+		md = MessageDigest.getInstance(hashType); //MD5 || SHA
+		md.update(Converter.toBytes(object));
+
+		byte raw[] = md.digest();
+		return (new BASE64Encoder()).encode(raw);
+	}
+}