Index: .gitignore
==================================================================
--- .gitignore
+++ .gitignore
@@ -38,7 +38,9 @@
 tests/tests.nds
 tests/EBOOT.PBP
 tests/PARAM.SFO
 tests/objc_sync/objc_sync
 utils/objfw-config
+utils/ofhash/ofhash
+utils/ofhash/ofhash.exe
 utils/ofzip/ofzip
 utils/ofzip/ofzip.exe

Index: configure.ac
==================================================================
--- configure.ac
+++ configure.ac
@@ -691,10 +691,11 @@
 AC_ARG_ENABLE(files,
 	AS_HELP_STRING([--disable-files], [disable file support]))
 AS_IF([test x"$enable_files" != x"no"], [
 	AC_DEFINE(OF_HAVE_FILES, 1, [Whether we have files])
 	AC_SUBST(USE_SRCS_FILES, '${SRCS_FILES}')
+	AC_SUBST(OFHASH, "ofhash")
 	AC_SUBST(OFZIP, "ofzip")
 
 	AC_CHECK_FUNCS(readdir_r)
 ])
 

Index: extra.mk.in
==================================================================
--- extra.mk.in
+++ extra.mk.in
@@ -28,10 +28,11 @@
 LOOKUP_ASM_LIB_A = @LOOKUP_ASM_LIB_A@
 LOOKUP_ASM_LOOKUP_ASM_A = @LOOKUP_ASM_LOOKUP_ASM_A@
 LOOKUP_ASM_LOOKUP_ASM_LIB_A = @LOOKUP_ASM_LOOKUP_ASM_LIB_A@
 MAP_LDFLAGS = @MAP_LDFLAGS@
 OFBLOCKTESTS_M = @OFBLOCKTESTS_M@
+OFHASH = @OFHASH@
 OFHTTPCLIENTTESTS_M = @OFHTTPCLIENTTESTS_M@
 OFPROCESS_M = @OFPROCESS_M@
 OFKERNELEVENTOBSERVER_KQUEUE_M = @OFKERNELEVENTOBSERVER_KQUEUE_M@
 OFKERNELEVENTOBSERVER_POLL_M = @OFKERNELEVENTOBSERVER_POLL_M@
 OFKERNELEVENTOBSERVER_SELECT_M = @OFKERNELEVENTOBSERVER_SELECT_M@

Index: utils/Makefile
==================================================================
--- utils/Makefile
+++ utils/Makefile
@@ -1,8 +1,9 @@
 include ../extra.mk
 
-SUBDIRS += ${OFZIP}
+SUBDIRS += ${OFHASH}	\
+	   ${OFZIP}
 
 include ../buildsys.mk
 
 DISTCLEAN = objfw-config
 

ADDED   utils/ofhash/Makefile
Index: utils/ofhash/Makefile
==================================================================
--- utils/ofhash/Makefile
+++ utils/ofhash/Makefile
@@ -0,0 +1,13 @@
+include ../../extra.mk
+
+PROG = ofhash${PROG_SUFFIX}
+SRCS = OFHash.m
+
+include ../../buildsys.mk
+
+${PROG}: ${LIBOBJFW_DEP_LVL2}
+
+CPPFLAGS += -I../../src -I../../src/runtime -I../../src/exceptions -I../..
+LIBS := -L../../src -lobjfw ${LIBS}
+LD = ${OBJC}
+LDFLAGS += ${LDFLAGS_RPATH}

ADDED   utils/ofhash/OFHash.m
Index: utils/ofhash/OFHash.m
==================================================================
--- utils/ofhash/OFHash.m
+++ utils/ofhash/OFHash.m
@@ -0,0 +1,145 @@
+/*
+ * Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013, 2014
+ *   Jonathan Schleifer <js@webkeks.org>
+ *
+ * All rights reserved.
+ *
+ * This file is part of ObjFW. It may be distributed under the terms of the
+ * Q Public License 1.0, which can be found in the file LICENSE.QPL included in
+ * the packaging of this file.
+ *
+ * Alternatively, it may be distributed under the terms of the GNU General
+ * Public License, either version 2 or 3, which can be found in the file
+ * LICENSE.GPLv2 or LICENSE.GPLv3 respectively included in the packaging of this
+ * file.
+ */
+
+#include "config.h"
+
+#import "OFApplication.h"
+#import "OFArray.h"
+#import "OFFile.h"
+#import "OFMD5Hash.h"
+#import "OFRIPEMD160Hash.h"
+#import "OFSHA1Hash.h"
+#import "OFSHA224Hash.h"
+#import "OFSHA256Hash.h"
+#import "OFSHA384Hash.h"
+#import "OFSHA512Hash.h"
+#import "OFStdIOStream.h"
+
+#import "OFOpenFileFailedException.h"
+#import "OFReadFailedException.h"
+
+@interface OFHash: OFObject
+@end
+
+OF_APPLICATION_DELEGATE(OFHash)
+
+static void
+help(void)
+{
+	[of_stderr writeFormat:
+	    @"Usage: %@ [md5|rmd160|sha1|sha224|sha256|sha384|sha512] "
+	    @"file1 [file2 ...]\n",
+	    [OFApplication programName]];
+
+	[OFApplication terminateWithStatus: 1];
+}
+
+static Class
+hashClassForName(OFString *name)
+{
+	if ([name isEqual: @"md5"])
+		return [OFMD5Hash class];
+	else if ([name isEqual: @"rmd160"] || [name isEqual: @"ripemd160"])
+		return [OFRIPEMD160Hash class];
+	else if ([name isEqual: @"sha1"])
+		return [OFSHA1Hash class];
+	else if ([name isEqual: @"sha224"])
+		return [OFSHA224Hash class];
+	else if ([name isEqual: @"sha256"])
+		return [OFSHA256Hash class];
+	else if ([name isEqual: @"sha384"])
+		return [OFSHA384Hash class];
+	else if ([name isEqual: @"sha512"])
+		return [OFSHA512Hash class];
+
+	return nil;
+}
+
+@implementation OFHash
+- (void)applicationDidFinishLaunching
+{
+	OFArray *arguments = [OFApplication arguments];
+	Class <OFHash> hashClass;
+	OFEnumerator *enumerator;
+	OFString *path;
+	int exitStatus = 0;
+
+	if ([arguments count] < 2)
+		help();
+
+	if ((hashClass = hashClassForName([arguments objectAtIndex: 0])) == Nil)
+		help();
+
+	enumerator = [[arguments objectsInRange:
+	    of_range(1, [arguments count] - 1)] objectEnumerator];
+	while ((path = [enumerator nextObject]) != nil) {
+		void *pool = objc_autoreleasePoolPush();
+		id <OFHash> hash = [hashClass hash];
+		OFStream *file;
+		const uint8_t *digest;
+		size_t i, digestSize;
+
+		if ([path isEqual: @"-"])
+			file = of_stdin;
+		else {
+			@try {
+				file = [OFFile fileWithPath: path
+						       mode: @"rb"];
+			} @catch (OFOpenFileFailedException *e) {
+				[of_stderr writeFormat:
+				    @"Failed to open file %@: %s\n",
+				    [e path], strerror([e errNo])];
+
+				exitStatus = 1;
+				goto outer_loop_end;
+			}
+		}
+
+		while (![file isAtEndOfStream]) {
+			uint8_t buffer[1024];
+			size_t length;
+
+			@try {
+				length = [file readIntoBuffer: buffer
+						       length: 1024];
+			} @catch (OFReadFailedException *e) {
+				[of_stderr writeFormat:
+				    @"Failed to read %@: %s\n",
+				    path, strerror([e errNo])];
+
+				exitStatus = 1;
+				goto outer_loop_end;
+			}
+
+			[hash updateWithBuffer: buffer
+					length: length];
+		}
+		[file close];
+
+		digest = [hash digest];
+		digestSize = [hashClass digestSize];
+		for (i = 0; i < digestSize; i++)
+			[of_stdout writeFormat: @"%02x", digest[i]];
+
+		[of_stdout writeFormat: @"  %@\n", path];
+
+outer_loop_end:
+		objc_autoreleasePoolPop(pool);
+	}
+
+	[OFApplication terminateWithStatus: exitStatus];
+}
+@end