8900 File Format - Revision history

Dialexio: Redirect to S5L File Formats#8900.

2010-08-24T19:39:44Z

Redirect to S5L File Formats#8900.

Geohot at 23:28, 27 July 2008

2008-07-27T23:28:07Z

Geohot at 23:19, 27 July 2008

2008-07-27T23:19:26Z

Geohot: New page: This is the file format used by the S5L8900 ==Header== typedef struct { uchar magic[4]; // string "8900" uchar version[3]; // string "1.0" uint8 form...

2008-07-27T23:18:39Z

New page: This is the file format used by the S5L8900 ==Header== typedef struct { uchar magic[4]; // string "8900" uchar version[3]; // string "1.0" uint8 form...

New page

This is the file format used by the [[S5L8900]]

==Header==
typedef struct {
uchar magic[4]; // string "8900"
uchar version[3]; // string "1.0"
uint8 format; // plaintext format is 0x4, encrypted format is 0x3
uint32 unknown1;
uint32 sizeOfData; // size of data (ie, filesize - header(0x800) - footer signature(0x80) - footer certificate(0xC0A))
uint32 footerSignatureOffset; // offset to footer signature
uint32 footerCertOffset; // offset to footer certificate, from end of header (0x800)
uint32 footerCertLen;
uchar salt[0x20]; // a seemingly random salt (an awfully big one though... needs more attention)
uint16 unknown2;
uint16 epoch; // the security epoch of the file
uchar headerSignature[0x10]; // encrypt(sha1(header[0:0x40])[0:0x10], key_0x837, zero_iv)
uchar padding[0x7B0];
} Apple8900Header;

==Resources==
[http://wikee.iphwn.org/s5l8900:8900_format The dev team's wiki page on the topic]

← Older revision		Revision as of 19:39, 24 August 2010
Line 1:		Line 1:
		+	#REDIRECT [[S5L File Formats#8900]]
−	This is the file format used by the [[S5L8900]]. Usually this wraps around an [[IMG2 File Format\|IMG2]] file.
−
−	==Header==
−	typedef struct {
−	uchar magic[4]; // string "8900"
−	uchar version[3]; // string "1.0"
−	uint8 format; // plaintext format is 0x4, encrypted with [[GID-key]] format is 0x3, boot plaintext is 0x2, boot encrypted with [[UID-key]] is 0x1.
−	uint32 unknown1;
−	uint32 sizeOfData; // size of data (ie, filesize - header(0x800) - footer signature(0x80) - footer certificate(0xC0A))
−	uint32 footerSignatureOffset; // offset to footer signature
−	uint32 footerCertOffset; // offset to footer certificate, from end of header (0x800)
−	uint32 footerCertLen;
−	uchar salt[0x20]; // a seemingly random salt (an awfully big one though... needs more attention)
−	uint16 unknown2;
−	uint16 epoch; // the security epoch of the file
−	uchar headerSignature[0x10]; // encrypt(sha1(header[0:0x40])[0:0x10], key_0x837, zero_iv)
−	uchar padding[0x7B0];
−	} Apple8900Header;
−
−	==Resources==
−	[http://wikee.iphwn.org/s5l8900:8900_format The dev team's wiki page on the topic]

← Older revision		Revision as of 23:28, 27 July 2008
Line 1:		Line 1:
−	This is the file format used by the [[S5L8900]]	+	This is the file format used by the [[S5L8900]]. Usually this wraps around an [[IMG2 File Format\|IMG2]] file.

	==Header==		==Header==

@@ Line 5: / Line 5: @@
   uchar  magic[4];              // string "8900"
   uchar  version[3];            // string "1.0"
-  uint8  format;                // plaintext format is 0x4, encrypted format is 0x3
+  uint8  format;                // plaintext format is 0x4, encrypted with [[GID-key]] format is 0x3, boot plaintext is 0x2, boot encrypted with [[UID-key]] is 0x1.
   uint32 unknown1;
   uint32 sizeOfData;            // size of data (ie, filesize - header(0x800) - footer signature(0x80) - footer certificate(0xC0A))