Add functions to read and write the AUPD (flash update) image. "--read-aupd aupd.bin" will read (and decrypt) the AUPD image, and "--write-aupd aupd.bin" will write (and encrypt) an image. Also fix a bug in the "diskmove" function which corrupted the AUPD image when a bootloader was installed. So in order to manipulate the aupd image, you need to restore a clean firmware partition, and install the bootloader with this version of ipodpatcher. Decryption functions based on the description and sample code at http://ipodlinux.org/Flash_Decryption
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@14644 a1c6a512-1295-4272-9138-f99709370657
diff --git a/rbutil/ipodpatcher/arc4.h b/rbutil/ipodpatcher/arc4.h
new file mode 100644
index 0000000..8bff0e2
--- /dev/null
+++ b/rbutil/ipodpatcher/arc4.h
@@ -0,0 +1,47 @@
+/*
+ arc4.h - based on matrixssl-1-8-3-open
+
+*/
+
+/*
+ * Copyright (c) PeerSec Networks, 2002-2007. All Rights Reserved.
+ * The latest version of this code is available at http://www.matrixssl.org
+ *
+ * This software is open source; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This General Public License does NOT permit incorporating this software
+ * into proprietary programs. If you are unable to comply with the GPL, a
+ * commercial license for this software may be purchased from PeerSec Networks
+ * at http://www.peersec.com
+ *
+ * This program is distributed in WITHOUT ANY WARRANTY; without even the
+ * implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+ * See the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ * http://www.gnu.org/copyleft/gpl.html
+ */
+/*****************************************************************************/
+
+#ifndef _ARC4_H
+
+#include <stdint.h>
+
+struct rc4_key_t
+{
+ unsigned char state[256];
+ uint32_t byteCount;
+ unsigned char x;
+ unsigned char y;
+};
+
+void matrixArc4Init(struct rc4_key_t *ctx, unsigned char *key, int32_t keylen);
+int32_t matrixArc4(struct rc4_key_t *ctx, unsigned char *in,
+ unsigned char *out, int32_t len);
+
+#endif