SceSblGcAuthMgr

Module

Known NIDs

Version	Name	World	Privilege	NID
1.69	SceSblGcAuthMgr	Non-secure	Kernel	0x4B777EBC
3.60	SceSblGcAuthMgr	?	Kernel	0xDB1A9016

Libraries

Known NIDs

Version	Name	World	Visibility	NID
1.69	SceSblGcAuthMgrDrmBBForDriver	Non-secure	Kernel	0x1926B182
3.60	SceSblGcAuthMgrDrmBBForDriver	?	Kernel	0x1926B182
1.69	SceSblGcAuthMgrPcactForDriver	Non-secure	Kernel	0xB8600A5
1.69	SceSblGcAuthMgrMlnpsnlForDriver	Non-secure	Kernel	0x29ED0109
3.60	SceSblGcAuthMgrMlnpsnlForDriver	?	Kernel	0x29ED0109
1.69	SceSblGcAuthMgrAdhocBBForDriver	Non-secure	Kernel	0x2EFA9203
1.69	SceSblGcAuthMgrPkgForDriver	Non-secure	Kernel	0x82FBA7D
3.60	SceSblGcAuthMgrPkgForDriver	?	Kernel	0x082FBA7D
1.69	SceSblGcAuthMgrSclkForDriver	Non-secure	Kernel	0xF24F760D
3.60	SceSblGcAuthMgrSclkForDriver	?	Kernel	0xF24F760D
1.69	SceSblGcAuthMgrGcAuthForDriver	Non-secure	Kernel	0xC6627F5E
3.60	SceSblGcAuthMgrGcAuthForDriver	?	Kernel	0xC6627F5E
1.69	SceSblGcAuthMgr	Non-secure	User	0x7B13BCF7
3.60	SceSblGcAuthMgr	?	?	0x7B13BCF7
3.60	SceSblGcAuthMgrPsmactForDriver	?	Kernel	0x1C53F37D
3.60	SceSblGcAuthMgrMsSaveBBForDriver	?	Kernel	0x5032E8D4

Data segment layout

Address	Size	Description
0x0000	0x4BC4	unknown
0x4BC4	0x30	temp buffer for storing parts of cmd56 packets
0x4BF4	0x200	cmd56 request buffer
0x4DF4	0x04	packet6 gc parameter
0x4DF8	0x200	temp buffer for initializing cm56 req packets
0x4FF8	0x20	temp buffer for storing parts of cmd56 packets
0x5018	0x34	one of kirk responses
0x504C	0x200	cmd56 response buffer 1
0x524C	0x200	cmd56 response buffer 2
0x544C	0x20	one of kirk responses
0x546C	0x898	unknown

SceSblGcAuthMgrDrmBBForDriver

verify_checksum

Version	NID
3.60	0x22FD5D23

This function verifies that last responce from the card (cmd56) is valid

For example it is called from sceAppMgrGameDataMount

int verify_checksum(char* in_data);

Here is reversed code:

char resp_buffer[0x14]; //static buffer with response data

int verify_checksum(char* in_data)
{
   char* ib = in_data;
   char* rb = resp_buffer;
   char* rbe = rb + 0x14;
   
   int crc = 0;
   
   while(rb != rbe)
   {
       crc = crc | ((*ib) ^ (*rb));
       rb++;
       ib++;
   }
   
   if(crc == 0)
     return 0;
   else
     return 0x808A040A;
}

This is a timing safe memcmp. Xyz (talk) 10:02, 1 May 2017 (UTC)

clear_sensitive_data

Version	NID
3.60	0x812B2B5C

Clears some sensitive data.

Called after verify_checksum

int clear_sensitive_data(int* value);

clear_sensitive_data

Version	NID
3.60	0xBB451E83

Clears sensitive data that is left after cmd56 custom initialization.

This includes data generated by Kirk services 0x1C, 0x1F, 0x20 and packet6.

Called after initialize_sd_device

int clear_sensitive_data();

get_5018_data

Version	NID
3.60	0xBB70DDC0

This function copies first 0x20 bytes of the buffer to destination.

int get_5018_data(char* dest);

SceSblGcAuthMgrGcAuthForDriver

initialize_sd_device

Version	NID
3.60	0x68781760

This is a wrapper function that starts initialization subroutine through run_execlusive

int initialize_sd_device(int sd_ctx_index);

SceSblGcAuthMgr

_sceSblGcAuthMgrPcactActivation

Version	NID
1.69	0x32E7CEA

_sceSblGcAuthMgrGetMediaIdType01

Version	NID
1.69	0xAC64154

_sceSblGcAuthMgrAdhocBB224Auth1

Version	NID
1.69	0x307FD67C

_sceSblGcAuthMgrPkgVry

Version	NID
1.69	0x3E168BC4

_sceSblGcAuthMgrAdhocBB224Auth5

Version	NID
1.69	0x459F5503

_sceSblGcAuthMgrAdhocBB224Init

Version	NID
1.69	0x5AB126A7

_sceSblGcAuthMgrAdhocBB224Auth4

Version	NID
1.69	0x5CCC216C

_sceSblGcAuthMgrAdhocBB224Auth2

Version	NID
1.69	0x788C0517

_sceSblGcAuthMgrSclkSetData2

Version	NID
1.69	0x837D0FB6

_sceSblGcAuthMgrSclkGetData1

Version	NID
1.69	0x8A3AF1E8

_sceSblGcAuthMgrAdhocBB224Shutdown

Version	NID
1.69	0x8ECEACF9

_sceSblGcAuthMgrPcactGetChallenge

Version	NID
1.69	0x98153286

_sceSblGcAuthMgrAdhocBB224GetKeys

Version	NID
1.69	0xC236FB28

_sceSblGcAuthMgrAdhocBB224Auth3

Version	NID
1.69	0xD3F95259

gcauth_sm "KIRK" calls to F00D

The use of os0:sm/gcauthmgr_sm.self is to support the next generation of KIRK. It uses a similar input structure to the original KIRK on the PSP.

PSP support

4,7,0xC,0xD,0xE, 0x10, 0x11, 0x12 are the classic PSP KIRK Services supported by gcauth_sm.

New PSVita Codes

0x14-0x19, 0x1b-0x23 are the new KIRK Services supported by gcauth_sm.

0x14 is the 224bit ecdsa keypair gen. The only input is an empty buffer size (3*0x1C) it returns 3 values. Private key, Public X point, Public Y point. Each value is 0x1C bytes long.

0x16 is random 224bit generator. It will return 0x1C bytes of random data into the buffer. 0x17 -0x19 are the 224bit ecdsa versions of psp's 160bit 0x10-0x12