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= IDStorage certified sections =
= IDStorage certified sections =


IDStorage certified sections are a security measure for critical information. For example PSID and OpenPSID are certified (leaves 0x100, 0x101, 0x120, 0x121). For PSPemu on PS3 and PS Vita, the same sort of certificates are contained in PS3 eEID and PS Vita ID Storage, and Kirk commands are implemented to handle them. Moreover, PS3 eEID certificates use almost the same structure and algorithms, whilst PS Vita extends block sizes from 128 to 192 and 256 bits.
IDStorage certified sections are a security measure for critical information. For example PSID and OpenPSID are certified (leaves 0x100, 0x101, 0x120, 0x121).


Kirk command 0x12 is used to verify IDStorage certificates.
KIRK command 0x12 is used to verify IDStorage certificates.


== Structure ==
== Structure ==
Some of the leaves contain certificates similar in PSP, PS3 and PSVita.
Size is 0xB8 bytes: 0x10 bytes of data and 0xA8 bytes of certificate.


{|class="wikitable"
{|class="wikitable"
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| omac/cmac1 || 0x10 || hash of the previous information in CMAC1/OMAC mode
| omac/cmac1 || 0x10 || hash of the previous information in CMAC1/OMAC mode
|}
|}
<source lang="C">
typedef struct ECDSA160_signature { // size is 0x28
  unsigned char r[0x14];
  unsigned char s[0x14];
} ECDSA160_signature;
typedef struct ids_cert_main_psp { // size is 0xA8
char data[0x10];
char pub_key[0x28]; // ?generated using Kirk command 0xC? sent to Kirk command 0x11 for verification
ECDSA160_signature signature;
char constant_pub_key[0x28]; // hardcoded constant, same in all PSP consoles but depends on the certificate index in ID Storage
char enc_priv_key[0x20]; // decrypted and verified by Kirk command 0x10
} ids_cert_main_psp;
typedef struct ids_cert_psp { // size is 0xB8
ids_cert_main_psp cert_data; // data input for generating enc_aes_cmac_hash
char aes_cmac[0x10]; // verified by Kirk command 0x12
} ids_cert_psp;
</source>


= Content =
= Content =
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