wiiqt/WiiQt/nandspare.h

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#ifndef NANDSPARE_H
#define NANDSPARE_H
//some class to handle the ecc & hmac data in the nandBin
#include "includes.h"
#include "sha1.h"
class NandSpare
{
public:
NandSpare();
void SetHMacKey( const QByteArray key );
QByteArray Get_hmac_data( const QByteArray cluster, quint32 uid, const unsigned char *name, quint32 entry_n, quint32 x3, quint16 blk );
QByteArray Get_hmac_meta( const QByteArray cluster, quint16 super_blk );
static QByteArray CalcEcc( QByteArray in );
static quint8 Parity( quint8 x );
private:
QByteArray hmacKey;
};
#endif // NANDSPARE_H
/*
spare data...
0x40 bytes
0x30 = hmac
0x10 = ecc
block 0 ( boot1 )
all hmac is 0xffs
all ecc is calc'd. after the first 9 pages, it works out to all 0s
block 1 ( boot2v2 )
all hmac is 0xff and then 0s
block 2
same as above until page 2
starting at page 2, no ecc or hmac is written. its all 0xff
spare data is only written for pages used, not on a cluster basis
block 3 ( bootmii )
same as block 1
block 4
same as above( hmac starts with 0xff then all 0s. after page2 cluster 2 all ecc works at to 0s as well )
spare data is written for clusters used, not on a page basis
block 5 ( never been used )
all spare data is 0xffs, nothing is calculated
block 6 ( boot2 copy )
same as block 2
block 7
same as block 1
super blocks
hmac data is only on
block ff1 cluster 7 page: 6 ( 3fc7e )
block ff1 cluster 7 page: 7 ( 3fc7f )
block ff3 cluster 7 page: 6 ( 3fcfe )
block ff3 cluster 7 page: 7 ( 3fcff )
block ff5 cluster 7 page: 6 ( 3fd7e )
block ff5 cluster 7 page: 7 ( 3fd7f )
block ff7 cluster 7 page: 6 ( 3fdfe )
block ff7 cluster 7 page: 7 ( 3fdff )
block ff9 cluster 7 page: 6 ( 3fe7e )
block ff9 cluster 7 page: 7 ( 3fe7f )
block ffb cluster 7 page: 6 ( 3fefe )
block ffb cluster 7 page: 7 ( 3feff )
block ffd cluster 7 page: 6 ( 3ff7e )
block ffd cluster 7 page: 7 ( 3ff7f )
block fff cluster 7 page: 6 ( 3fffe )
block fff cluster 7 page: 7 ( 3ffff )
*/