This is the Switch equivalent of 3DS exheader. This is the file with extension ".npdm" in {Switch ExeFS}. The size of this file varies.
| Offset
|
Size
|
Description
|
| 0x0
|
0x80
|
META
|
| 0x80
|
0x200
|
RSA-2048 signature, followed a RSA-2048 modulus for NCA header (like 3DS)
|
| 0x280
|
<Varies>
|
ACID
|
| <See META>
|
<See META>
|
ACI0
|
META
| Offset
|
Size
|
Description
|
| 0x0
|
0x4
|
Magicnum "META".
|
| 0x20
|
?
|
Name string
|
| 0x70
|
0x4
|
Absolute offset for ACI0.
|
| 0x74
|
0x4
|
Size of ACI0.
|
| 0x78
|
0x4
|
Absolute offset of the RSA signature.
|
| 0x7C
|
0x4
|
Size used with the above offset. Offset+size is normally ACI0_start-8.
|
Switch version of 3DS "System Control Info"?
ACID
| Offset
|
Size
|
Description
|
| 0x0
|
0x4
|
Magicnum "ACID".
|
| 0x4
|
0xEC
|
?
|
| 0xF0
|
<Varies>
|
Service Access Control
|
Switch version of AccessDesc?
ACI0
| Offset
|
Size
|
Description
|
| 0x0
|
0x4
|
Magicnum "ACI0".
|
| 0x4
|
0xB4
|
?
|
| 0x60
|
<Varies>
|
Service Access Control
|
Switch version of 3DS ACI(Access Control Info)?
Service Access Control
This is a list of service-name strings which the title has access to, with the following structure: +0 control_byte, +1 = {service-name without nul-terminator}. Bitmask 0xF in control_byte is the length of the service-name. Bitmask 0x80 is set for services which the title can register, while it's clear for services used with Services_API#GetService.