Talk:SELF - SPRX

To be merged with SELF File Format and Decryption

NPDRM Header

typedef struct 
{	
u32 block_type;  // this is 3(NPDRM)	
u32 block_size;  // this is 0x90(sizeof(Self_NPDRM))	
u32 unknown1; //So far always 0	
u32 unknown2; //So far always 0	
u32 magic;       // 0x4E504400(NPD)	
u32 unknown3;    // So far always 1	
u32 license;    // 1 Network License, 2 Local License, 3 Free	
u32 type;    // 1 Executable, 21 Update for Disc Based Game	
u8 titleid[0x30];	
u8 hash_unknown[0x10];	
u8 hash1[0x10];	
u8 hash2[0x10];	
u8 padding[0x10];	
} Self_NPDRM

Located after the Self Control Info.

---

App Info header:

Aligned to 0x10 bytes.

field	offset	type	notes
authid	0x00	u64
unknown	0x08	u32
app_type	0x0c	u32	1 -- level 0 2 -- level 1 3 -- level 2 4 -- application 5 -- isolated SPU module 6 -- secure loader 8 -- NP-DRM application
app_version	0x10	u64

Encrypted phdr offset entry

There is one of these entries for each phdr entry in the elf file so that the ps3 knows where to decrypt the data from. (because it might also be compressed.)

field	offset	type	notes
Encrypted Data Offset	0x00	u64
Encrypted Data Size	0x08	u64
unknown	0x10	u32	This has been 1 in all the examples I have seen.
unknown	0x14	u32	Always 0, as far as I know.
unknown	0x18	u32	Always 0, as far as I know.
unknown	0x1c	u32	This is 2 for loadable segment types, and 0 for other types.

field	offset	type	notes
Magic	0x0	u32	Must be "SCE\0"
version	0x4	u32	This must be 2 or the Self loader will abort
flags	0x8	u16	0: retail type 0 1: retail 2: retail type 1 0x8000: devkit 4: unknown, games that require 3.42. 7: unknown, all games that require 3.50 have that flag. 0001: FW 1.00 (app version 1.0.0) 0001: FW 3.15 (app version 3.15.0) 0013: FW 3.65 (app version 3.65.0) 0016: FW 3.72 (app version 3.70.0)