drms.c File Reference

Include dependency graph for drms.c:

Data Structures
struct	aes_s
struct	md5_s
struct	shuffle_s
struct	drms_s
Defines
#define	SWAP(a, b)   { (a) ^= (b); (b) ^= (a); (a) ^= (b); }
#define	REVERSE(p, n)
#define	F1(x, y, z)   ((z) ^ ((x) & ((y) ^ (z))))
#define	F2(x, y, z)   F1((z), (x), (y))
#define	F3(x, y, z)   ((x) ^ (y) ^ (z))
#define	F4(x, y, z)   ((y) ^ ((x) | ~(z)))
#define	MD5_DO(f, w, x, y, z, data, s)   ( w += f(x, y, z) + data, w = w<<s | w>>(32-s), w += x )
#define	ROT13(c)
#define	DRMS_DIRNAME   ".drms"
#define	ISCINFO   "iSCInfo"
#define	PROD_NAME   "iPod"
#define	VENDOR_NAME   "Apple Computer, Inc."
Functions
static void	InitAES (struct aes_s *, uint32_t *)
static void	DecryptAES (struct aes_s *, uint32_t *, const uint32_t *)
static void	InitMD5 (struct md5_s *)
static void	AddMD5 (struct md5_s *, const uint8_t *, uint32_t)
static void	EndMD5 (struct md5_s *)
static void	Digest (struct md5_s *, uint32_t *)
static void	InitShuffle (struct shuffle_s *, uint32_t *, uint32_t)
static void	DoShuffle (struct shuffle_s *, uint32_t *, uint32_t)
static uint32_t	FirstPass (uint32_t *)
static void	SecondPass (uint32_t *, uint32_t)
static void	ThirdPass (uint32_t *)
static void	FourthPass (uint32_t *)
static void	TinyShuffle1 (uint32_t *)
static void	TinyShuffle2 (uint32_t *)
static void	TinyShuffle3 (uint32_t *)
static void	TinyShuffle4 (uint32_t *)
static void	TinyShuffle5 (uint32_t *)
static void	TinyShuffle6 (uint32_t *)
static void	TinyShuffle7 (uint32_t *)
static void	TinyShuffle8 (uint32_t *)
static void	DoExtShuffle (uint32_t *)
static int	GetSystemKey (uint32_t *, bool)
static int	WriteUserKey (void *, uint32_t *)
static int	ReadUserKey (void *, uint32_t *)
static int	GetUserKey (void *, uint32_t *)
static int	GetSCIData (char *, uint32_t **, uint32_t *)
static int	HashSystemInfo (uint32_t *)
static int	GetiPodID (int64_t *)
static void	BlockXOR (uint32_t *p_dest, uint32_t *p_s1, uint32_t *p_s2)
void *	drms_alloc (const char *psz_homedir)
void	drms_free (void *_p_drms)
void	drms_decrypt (void *_p_drms, uint32_t *p_buffer, uint32_t i_bytes)
int	drms_init (void *_p_drms, uint32_t i_type, uint8_t *p_info, uint32_t i_len)

---

Define Documentation

#define DRMS_DIRNAME   ".drms"

#define F1	(	x,
		y,
		z		)	((z) ^ ((x) & ((y) ^ (z))))

#define F2	(	x,
		y,
		z		)	F1((z), (x), (y))

#define F3	(	x,
		y,
		z		)	((x) ^ (y) ^ (z))

#define F4	(	x,
		y,
		z		)	((y) ^ ((x) | ~(z)))

#define ISCINFO   "iSCInfo"

#define MD5_DO	(	f,
		w,
		x,
		y,
		z,
		data,
		s		)	( w += f(x, y, z) + data, w = w<<s | w>>(32-s), w += x )

#define PROD_NAME   "iPod"

#define REVERSE	(	p,
		n		)

#define ROT13

(

c

)

Value:

(((c)>='A'&&(c)<='Z')?(((c)-'A'+13)%26)+'A':\
                      ((c)>='a'&&(c)<='z')?(((c)-'a'+13)%26)+'a':c)

#define SWAP	(	a,
		b		)	{ (a) ^= (b); (b) ^= (a); (a) ^= (b); }

#define VENDOR_NAME   "Apple Computer, Inc."

---

Function Documentation

static void AddMD5	(	struct md5_s *	,
		const uint8_t *	,
		uint32_t
	)			[static]

static void BlockXOR	(	uint32_t *	p_dest,
		uint32_t *	p_s1,
		uint32_t *	p_s2
	)			[inline, static]

static void DecryptAES	(	struct aes_s *	,
		uint32_t *	,
		const uint32_t *
	)			[static]

static void Digest	(	struct md5_s *	,
		uint32_t *
	)			[static]

static void DoExtShuffle

(

uint32_t *

)

[static]

static void DoShuffle	(	struct shuffle_s *	,
		uint32_t *	,
		uint32_t
	)			[static]

void* drms_alloc

(

const char *

psz_homedir

)

void drms_decrypt	(	void *	_p_drms,
		uint32_t *	p_buffer,
		uint32_t	i_bytes
	)

void drms_free

(

void *

_p_drms

)

int drms_init	(	void *	_p_drms,
		uint32_t	i_type,
		uint8_t *	p_info,
		uint32_t	i_len
	)

static void EndMD5

(

struct md5_s *

)

[static]

static uint32_t FirstPass

(

uint32_t *

)

[static]

static void FourthPass

(

uint32_t *

)

[static]

static int GetiPodID

(

int64_t *

)

[static]

static int GetSCIData	(	char *	,
		uint32_t **	,
		uint32_t *
	)			[static]

static int GetSystemKey	(	uint32_t *	,
		bool
	)			[static]

static int GetUserKey	(	void *	,
		uint32_t *
	)			[static]

static int HashSystemInfo

(

uint32_t *

)

[static]

static void InitAES	(	struct aes_s *	,
		uint32_t *
	)			[static]

static void InitMD5

(

struct md5_s *

)

[static]

static void InitShuffle	(	struct shuffle_s *	,
		uint32_t *	,
		uint32_t
	)			[static]

static int ReadUserKey	(	void *	,
		uint32_t *
	)			[static]

static void SecondPass	(	uint32_t *	,
		uint32_t
	)			[static]

static void ThirdPass

(

uint32_t *

)

[static]

static void TinyShuffle1

(

uint32_t *

)

[static]

static void TinyShuffle2

(

uint32_t *

)

[static]

static void TinyShuffle3

(

uint32_t *

)

[static]

static void TinyShuffle4

(

uint32_t *

)

[static]

static void TinyShuffle5

(

uint32_t *

)

[static]

static void TinyShuffle6

(

uint32_t *

)

[static]

static void TinyShuffle7

(

uint32_t *

)

[static]

static void TinyShuffle8

(

uint32_t *

)

[static]

static int WriteUserKey	(	void *	,
		uint32_t *
	)			[static]

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