SceSblGcAuthMgr

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

For example it is called from

Here is reversed code:

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

clear_sensitive_data
Clears some sensitive data.

Called after

clear_sensitive_data
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
This is a wrapper function that starts initialization subroutine through run_execlusive

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