Index: src/OFZIPArchiveEntry+Private.h
==================================================================
--- src/OFZIPArchiveEntry+Private.h
+++ src/OFZIPArchiveEntry+Private.h
@@ -24,11 +24,11 @@
 - (uint16_t)OF_minVersion;
 - (uint16_t)OF_generalPurposeBitFlag;
 - (uint16_t)OF_compressionMethod;
 - (uint16_t)OF_lastModifiedFileTime;
 - (uint16_t)OF_lastModifiedFileDate;
-- (OFDataArray*)OF_extraField;
+- (OFDataArray*)OF_extraFieldNoCopy;
 - (uint16_t)OF_startDiskNumber;
 - (uint16_t)OF_internalAttributes;
 - (uint32_t)OF_externalAttributes;
 - (uint32_t)OF_localFileHeaderOffset;
 @end

Index: src/OFZIPArchiveEntry.h
==================================================================
--- src/OFZIPArchiveEntry.h
+++ src/OFZIPArchiveEntry.h
@@ -43,10 +43,11 @@
 #ifdef OF_HAVE_PROPERTIES
 @property (readonly, copy) OFString *fileName, *fileComment;
 @property (readonly) off_t compressedSize, uncompressedSize;
 @property (readonly, retain) OFDate *modificationDate;
 @property (readonly) uint32_t CRC32;
+@property (readonly, copy) OFDataArray *extraField;
 #endif
 
 /*!
  * @brief Returns the file name of the entry.
  *
@@ -86,6 +87,13 @@
  * @brief Returns the CRC32 checksum of the entry's file.
  *
  * @return The CRC32 checksum of the entry's file
  */
 - (uint32_t)CRC32;
+
+/*!
+ * @brief Returns the extra field of the entry.
+ *
+ * @return The extra field of the entry
+ */
+- (OFDataArray*)extraField;
 @end

Index: src/OFZIPArchiveEntry.m
==================================================================
--- src/OFZIPArchiveEntry.m
+++ src/OFZIPArchiveEntry.m
@@ -133,10 +133,15 @@
 
 - (uint32_t)CRC32
 {
 	return _CRC32;
 }
+
+- (OFDataArray*)extraField
+{
+	return [[_extraField copy] autorelease];
+}
 
 - (OFString*)description
 {
 	void *pool = objc_autoreleasePoolPush();
 	OFDate *modificationDate = [self modificationDate];
@@ -147,14 +152,15 @@
 	    @"\tFile comment = %@\n"
 	    @"\tCompressed size = %jd\n"
 	    @"\tUncompressed size = %jd\n"
 	    @"\tModification date = %@\n"
 	    @"\tCRC32 = %" @PRIu32 @"\n"
+	    @"\tExtra field = %@\n"
 	    @"}",
 	    [self class], self, _fileName, _fileComment,
 	    (intmax_t)_compressedSize, (intmax_t)_uncompressedSize,
-	    modificationDate, _CRC32];
+	    modificationDate, _CRC32, _extraField];
 
 	objc_autoreleasePoolPop(pool);
 
 	return [ret autorelease];
 }
@@ -187,11 +193,11 @@
 - (uint16_t)OF_lastModifiedFileDate
 {
 	return _lastModifiedFileDate;
 }
 
-- (OFDataArray*)OF_extraField
+- (OFDataArray*)OF_extraFieldNoCopy
 {
 	OF_GETTER(_extraField, true)
 }
 
 - (uint16_t)OF_startDiskNumber