@@ -213,11 +213,11 @@
 
 	/* Handle any remaining bytes of data. */
 	memcpy(_in.u8, buffer, length);
 }
 
-- (uint8_t*)digest
+- (const uint8_t*)digest
 {
 	uint8_t	*p;
 	size_t count;
 
 	if (_calculated)
@@ -258,13 +258,13 @@
 	md5_transform(_buffer, _in.u32);
 	BSWAP32_VEC_IF_BE(_buffer, 4);
 
 	_calculated = true;
 
-	return (uint8_t*)_buffer;
+	return (const uint8_t*)_buffer;
 }
 
 - (bool)isCalculated
 {
 	return _calculated;
 }
 @end