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/*
* Copyright (c) 2009 Thomas Schmitt
*
* This file is part of the libisofs project; you can redistribute it and/or
* modify it under the terms of the GNU General Public License version 2
* or later as published by the Free Software Foundation.
* See COPYING file for details.
*/
#ifndef LIBISO_MD5_H_
#define LIBISO_MD5_H_
/* The MD5 computation API is in libisofs.h : iso_md5_start() et.al. */
/** Create a writer object for checksums and add it to the writer list of
the given Ecma119Image.
*/
int checksum_writer_create(Ecma119Image *target);
/* Write stream detectable checksum tag to extra block.
* All tag ranges start at the beginning of the System Area (i.e. t->ms_block)
* and stem from the same MD5 computation context. Tag types 2 and 3 are
* intermediate checksums. Type 2 announces the existence of type 3.
* If both match, then at least the directory tree is trustworthy.
* Type 1 is written at the very end of the session. If it matches, then
* the whole image is trustworthy.
* @param t The image being written
* @flag bit0-7= tag type
* 1= session tag (End checksumming.)
* 2= superblock tag (System Area and Volume Descriptors)
* 3= tree tag (ECMA-119 and Rock Ridge tree)
*/
int iso_md5_write_tag(Ecma119Image *t, int flag);
#endif /* ! LIBISO_MD5_H_ */