SceNpDrm

Module

Version	World	Privilege
0.990.000-3.740.011	Non-secure	Kernel

Libraries

Known NIDs

Version	Name	World	Visibility	NID
1.000.071-3.740.011	SceNpDrm	Non-secure	User	0xF2799B1B
0.990.000-3.740.011	SceNpDrmForDriver	Non-secure	Kernel	0xD84DC44A
1.000.071-3.740.011	SceNpDrmPackage	Non-secure	User	0x88514DB2
1.800.071-3.570.011	ScePsmDrm	Non-secure	User	0x3F2B0888
1.800.071-3.740.011	ScePsmDrmForDriver	Non-secure	Kernel	0x9F4924F2

Data segment layout

Address	Size	Description
0x0000	0x4	SceNpDrm mutex SceUID
0x0004	0x4	ScePsmDrm mutex SceUID
0x0008	0x8	unknown
0x0010	0xC0	Static keys decrypted with sceSblAuthMgrGetEKcForDriver key 0. First 0x10 bytes are reencrypted with ConsoleId. First 0x10 bytes are aes_key used to decrypt 0x800 bytes of Primary Key Table from act.dat. Second 0x10 bytes are aes_key used to decrypt Primary Key Table index from rif.
0x00D0	0xCF8	unknown
0x0DC8	0x4	Game Exist flag
0x0DCC	0x4	Is DEX flag or Is Tool flag
0x0DD0	0x30	unknown
0x0E00	0x1040	tm0:/npdrm/act.dat data
0x1E40	0x400	tm0:/psmdrm/act.dat data
0x2240	0x10	OpenPsId This data is compared against OpenPsId in act.dat and under some conditions in .rif at offset 0xC0.
0x2250	0x4	act data Is Valid flag
0x2254	0x4	unknown
0x2258	0x8	/CONFIG/NP/account_id registry key
0x2260	0x4	Loose Account Bind flag
0x2264	0x4	/CONFIG/NP/debug_upgradable registry key
0x2268	0x20	sha256 digest of get_act_data
0x2288	0x20	hmac-sha256 digest of get_act_data
0x22A8	0x8	unknown
0x22B0	0x8	account_id
0x22B8	0x8	PSM activation start date
0x22C0	0x8	PSM activation end date
0x22C8	0x20	some key decrypted with 0x2288

Obtaining klicensee

Initialization steps (common):

1. Get the hardcoded encrypted EKc (0xC0 bytes). (on FW 3.60, 0xC0 bytes from SceNpDrm code segment at offset 0x111D0)

2. Decrypt the hardcoded encrypted EKc using sceSblAuthMgrGetEKcForDriver with key revision 0 (?or 1 or 2?).

Initialization steps (per-console):

3. Get ConsoleId (0x10 bytes) using sceSblAimgrGetConsoleIdForDriver.

4. Decrypt using AES128ECB first 0x10 bytes of EKc with ConsoleId as key.

5. Read 0x800 bytes of the encrypted Primary Key Table from act.dat file.

6. Decrypt 0x800 bytes of Primary Key Table with reencrypted static key using AES (need to figure out which AES exactly).

Initialization steps (per-content):

7. Get 0x98 / 0x200 bytes of RIF from the content's .rif file and select one of the 5 scenarios for decrypting RIF Key into klicensee based on License flags (need to figure out). In most cases only the first 0x70 bytes are needed for klicensee derivation because at 0x70 is the ECDSA signature which is not used for derivation, and after 0x98 is data only used for some PS Vita contents (maybe only PS Vita cartridges require a 0x200-byte RIF).

Scenario 1 - maybe DRM Free

Take RIF Key 2.

Take static keys 3, 4.

Take first 0x70 bytes of RIF.

Use SceSblAuthMgr#sceSblAuthMgrDecBindDataForDriver to decrypt RIF key 2 and obtain klicensee.

Scenario 2

Take RIF Key 2.

Take primary keys 1, 2.

Take first 0x70 bytes of RIF.

Use SceSblAuthMgr#sceSblAuthMgrDecBindDataForDriver to decrypt RIF key 2 and obtain klicensee.

Scenario 3 - Game Cartridge

Take RIF Key 2.

Take cmd56 handshake keys with get_5018_data.

Take first 0x70 bytes of RIF.

Use SceSblAuthMgr#sceSblAuthMgrDecBindDataForDriver to decrypt RIF key 2 and obtain klicensee.

Scenario 4 - Game Cartridge

Take RIF Key 1.

Take cmd56 handshake keys with get_5018_data.

Take first 0x70 bytes of RIF.

Erase RIF Key 1 from RIF.

Use SceSblAuthMgr#sceSblAuthMgrDecBindDataForDriver to decrypt RIF key 1 and obtain klicensee.

Scenario 5

Take RIF Key 1.

Decrypt Primary Table Key index from RIF with static key 2 using AES (need to figure out which AES exactly).

Take primary key using decrypted index.

Decrypt RIF key 1 with obtained primary key using AES (need to figure out which AES exactly).

Get rif name algorithm

uint8_t rif_name_keys[0x10] = {
	0x19, 0xDD, 0x4F, 0xB9, 0x89, 0x48, 0x2B, 0xD4,
	0xCB, 0x9E, 0xC9, 0xC7, 0x9A, 0x2E, 0xFB, 0xD0
};

int aes_encrypt(const void *buf, int size, uint8_t *keys) {
	AES_ctx ctx;
	AES_set_key(&ctx, rif_name_keys, 0x80);

	int i;
	for (i = 0; i < size; i += 0x10) {
		AES_encrypt(&ctx, buf+i, buf+i);
	}
}

typedef struct {
	uint64_t mode; // 0: bounded, 1: fixed
	uint64_t account_id;
} SceNpDrmRifName;

int getRifName(char *rif_name, int length, uint64_t account_id, uint64_t mode) {
	SceNpDrmRifName rif_name_work;
	rif_name_work.mode = mode;
	rif_name_work.account_id= account_id;
	aes_encrypt(&rif_name, sizeof(SceNpDrmRifName), rif_name_keys);
	
	snprintf(rif_name, length, "%016llx%016llx.rif", __builtin_bswap64(((uint64_t *)&rif_name_work)[0]), __builtin_bswap64(((uint64_t *)&rif_name_work)[1]));	
}

SceNpDrm

_sceNpDrmCheckDrmReset

Version	NID
1.000.071-3.740.011	0x4458812B

//opt is of size 0x18
int _sceNpDrmCheckDrmReset(int unk0, int unk1, void *opt);

_sceNpDrmRemoveActData

Version	NID
1.000.071-3.740.011	0x507D06A6

Removes NPDRM per-console activation data at tm0:/npdrm/act.dat.

// pAccountId of removed tm0:/npdrm/act.dat
>int _sceNpDrmRemoveActData(SceUInt64 *pAccountId);

_sceNpDrmGetRifName

Version	NID
1.000.071-3.740.011	0xB8C5DA7C

int _sceNpDrmGetRifName(char *rif_name, SceUInt64 account_id);

_sceNpDrmGetRifNameForInstall

Version	NID
1.000.071-3.740.011	0xD312424D

// rif_name is of size 0x30
// license is of size 0x200
// num must be 0 or 1
int _sceNpDrmGetRifNameForInstall(char *rif_name, void *license, int num);

_sceNpDrmGetRifInfo

Version	NID
1.000.071-3.740.011	0xE8343660

typedef struct rif_info { // size is 0x70
   char content_id[0x30];
   char version_number[4];
   char rif_lic_flags[4];
   char drm_type0[4]; // DRM type related
   char drm_type1[4]; // DRM type related
   char account_id[8];
   char rif_data_0x98[8];
   uint64_t lic_start_time;
   uint64_t lic_exp_time;
   char klicensee[0x10];
} rif_info;

typedef struct _sceNpDrmGetRifInfo_opt { // size is 0x28
  void* content_id;
  void* account_id;
  void* version_number;
  void* rif_lic_flags;
  void* lic_type0; // DRM type related
  void* lic_type1; // DRM type related
  void* lic_start_time;
  void* lic_exp_time;
  void* rif_data_0x98;
} _sceNpDrmGetRifInfo_opt;

// license is of size 0x200
int _sceNpDrmGetRifInfo(void *license, SceSize rif_size, SceUInt32 num, _sceNpDrmGetRifInfo_opt* pOpt);

_sceNpDrmGetFixedRifName

Version	NID
1.000.071-3.740.011	0xE935B0FC

int _sceNpDrmGetFixedRifName(char *rif_name, uint64_t account_id);

_sceNpDrmCheckActData

Version	NID
1.000.071-3.740.011	0xFEEBCD62

Calls #sceNpDrmCheckActDataForDriver.

typedef struct SceNpDrmCheckActDataOpt { // size is 0x10
SceUInt64 act_start_time;
SceUInt64 act_exp_time;
} SceNpDrmCheckActDataOpt;

int _sceNpDrmCheckActData(SceUInt32 *act_type, SceUInt32 *unk2, SceUInt64 *pAccountId, SceNpDrmCheckActDataOpt *pOpt);

_sceNpDrmPresetRifProvisionalFlag

Version	NID
0.931.010-1.692.000	not present
1.800.071-3.740.011	0x2523F57F

// license is of size 0x200
int _sceNpDrmPresetRifProvisionalFlag(void *license);

SceNpDrmForDriver

sceNpDrmGetRifInfoForDriver

Version	NID
3.60	0xDB406EAE

 
// content_id is of size 0x30
int sceNpDrmGetRifInfoForDriver(const void *license, SceSize license_size, int check_sign, char *content_id, SceUInt64 *pAccountId, int *pLicenseVersion, int *pLicenseFlags, int *flags, int *sku_flags, SceUInt64 *lic_start_time, SceUInt64 *lic_exp_time, SceUInt64 *flags2);

sceNpDrmPackageSetGameExistForDriver

Version	NID
3.60	0x3BFD2850

int sceNpDrmPackageSetGameExistForDriver(int value);

sceNpDrmGetFixedRifNameForDriver

Version	NID
3.60	0x5D73448C

// name is of size 0x30
int sceNpDrmGetFixedRifNameForDriver(char *rif_name, SceUInt64 account_id);

sceNpDrmGetRifNameForDriver

Version	NID
3.60	0xDF62F3B8

// name is of size 0x30
int sceNpDrmGetRifNameForDriver(char *rif_name, SceUInt64 account_id);

sceNpDrmGetRifNameForInstallForDriver

Version	NID
3.60	0x17573133

// rif_name is of size 0x30
// if is_fixed is set, the Content ID is not used
int sceNpDrmGetRifNameForInstallForDriver(char *rif_name, const void *license, SceBool is_fixed);

sceNpDrmPresetRifProvisionalFlagForDriver

Version	NID
3.60	0xC070FE89

Updating license data.

int sceNpDrmPresetRifProvisionalFlagForDriver(void *license, int unk2);

sceNpDrmCheckActDataForDriver

Version	NID
3.60	0x9265B350

Gets information about NPDRM per-console activation data at tm0:/npdrm/act.dat.

int sceNpDrmCheckActDataForDriver(SceUInt32 *act_type, SceUInt32 *unk2, SceUInt64 *pAccountId, SceUInt64 *act_start_time, SceUInt64 *act_exp_time);

sceNpDrmRemoveActDataForDriver

Version	NID
3.60	0x8B85A509

Removes NPDRM per-console activation data at tm0:/npdrm/act.dat.

// pAccountId of removed tm0:/npdrm/act.dat
int sceNpDrmRemoveActDataForDriver(SceUInt64 *pAccountId);

sceNpDrmUpdateAccountIdForDriver

Version	NID
3.60	0x116FC0D6

int sceNpDrmUpdateAccountIdForDriver(SceUInt64 account_id);

sceNpDrmEbootSigGenMultiDiscForDriver

Version	NID
3.60	0x39A7A666

// dst is of size 0x200
int sceNpDrmEbootSigGenMultiDiscForDriver(const char *path, const void *some_sig, void *dst, SceUInt32 systemSwVersion);

sceNpDrmEbootSigGenPs1ForDriver

Version	NID
3.60	0x6D9223E1

// dst is of size 0x200
int sceNpDrmEbootSigGenPs1ForDriver(const char *path, const void *hash_sha256, void *dst, SceUInt32 systemSwVersion);

sceNpDrmGetLegacyDocKeyForDriver

Version	NID
3.60	0x4E321BDE

Gets klicensee to decrypt encrypted DOCUMENT.DAT.

// pLegacyDocKey is of size 0x10 bytes
int sceNpDrmGetLegacyDocKeyForDriver(void *pRif, void *pDocEdat, SceSize docEdatSize, void *pLegacyDocKey);

sceNpDrmEbootSigVerifyForDriver

Version	NID
3.60	0x7A319692

drm_data - __sce_ebootpbp or license data, size is 0x200.

int sceNpDrmEbootSigVerifyForDriver(const char *path, void *drm_data);

sceNpDrmEbootSigGenPspForDriver

Version	NID
3.60	0x90B1A6D3

// dst is of size 0x200
int sceNpDrmEbootSigGenPspForDriver(const char *path, const void *hash_sha256, void *dst, SceUInt32 systemSwVersion);

sceNpDrmEbootSigConvertForDriver

Version	NID
3.60	0xA29B75F9

// dst is of size 0x200
int sceNpDrmEbootSigConvertForDriver(const char *path, const void *some_sig, void *dst);

sceNpDrmPspEbootVerifyForDriver

Version	NID
3.60	0xB6CA3A2C

int sceNpDrmPspEbootVerifyForDriver(const char *path, const void *some_sig);

sceNpDrmPspEbootSigGenForDriver

Version	NID
3.60	0xEF387FC4

// dst is of size 0x100
int sceNpDrmPspEbootSigGenForDriver(const char *path, const void *hash_sha256, void *dst);

sceNpDrmIsLooseAccountBindForDriver

Version	NID
3.60	0xFC84CA1A

int sceNpDrmIsLooseAccountBindForDriver(void);

sceNpDrmUpdateDebugSettingsForDriver

Version	NID
3.60	0xA91C7443

checks /CONFIG/NP debug_upgradable and /CONFIG/NP2 debug_drm_loose_bind registry values

int sceNpDrmUpdateDebugSettingsForDriver(void);

sceNpDrmGetRifPspKeyForDriver

Version	NID
3.60	0xDACB71F4

int sceNpDrmGetRifPspKeyForDriver(const void *license, void *klicensee, SceUInt32 *flags, SceUInt64 *lic_start_time, SceUInt64 *lic_exp_time);

sceNpDrmGetRifVitaKeyForDriver

Version	NID
3.60	0x723322B5

It uses #sceNpDrmGetRifInfoForDriver to get required fields.

int sceNpDrmGetRifVitaKeyForDriver(const void *license, void *klicensee, SceUInt32 *flags, SceUInt32 *sku_flags, SceUInt64 *lic_start_time, SceUInt64 *lic_exp_time);

sceNpDrmWriteActDataForDriver

Version	NID
0.990-3.60	0x742EBAF4

Related to SceSblGcAuthMgr#_sceSblGcAuthMgrPcactActivation.

decrypts act_data with aes_dec_key and stores it to data segment

verifies sha1 - ecdsa or sha256 - RSA

checks Loose Account Bind flag

verifies OpenPsId

creates tm0:/npdrm folder

writes tm0:/npdrm/act.dat file

repeats all verification steps

decrypts Primary Key Table

// npdrm_act_data is of size 0x1040
int sceNpDrmWriteActDataForDriver(void *npdrm_act_data, const char *aes_dec_key);

sceNpDrmReadActDataForDriver

Version	NID
3.60	0xD91C3BCE

Related to sceSblGcAuthMgrPcactGetChallenge

reads 0x1038 bytes of tm0:/npdrm/act.dat data

// act_data is of size 0x1038
int sceNpDrmReadActDataForDriver(void *act_data);

sceNpDrmVerifyRifForDriver

Version	NID
3.60	0xFE7B17B6

verify ECDSA - SHA1 pair or RSA - SHA256 pair

// license max size is 0x200
int sceNpDrmVerifyRifForDriver(void *license, SceSize rif_size);

sceNpDrmVerifyRifFullForDriver

Version	NID
3.60	0xFF63672D

check OpenPsId

check cmd56 handshake part

perform steps to get decrypted rif key

// license is of unknown size but at least 0xF8
int sceNpDrmVerifyRifFullForDriver(void *license);

sceNpDrmUpdateActDataForDriver

Version	NID
3.60	0x77926F5

reads tm0:/npdrm/act.dat

verifies ECDSA with sha1 and RSA with sha256

checks Loose Account Bind flag

verifies OpenPsId

clears Secondary Table, RSA Signature, Unknown Sig, ECDSA Signature

decrypts Primary Key Table

int sceNpDrmUpdateActDataForDriver(void);

SceNpDrmPackage

_sceNpDrmPackageTransform

Version	NID
1.69-3.60	0x0567DCA1

// opt is of size 0x28
int _sceNpDrmPackageTransform(int unk0, int unk1, void* opt, int unk3);

_sceNpDrmPackageInstallFinished

Version	NID
1.69-3.60	0x6896EAF2

// opt is of size 0x8
int _sceNpDrmPackageInstallFinished(int unk0, int unk1, int unk2, void* opt);

_sceNpDrmPackageCheck

Version	NID
1.69-3.60	0xA1D885FA

int _sceNpDrmPackageCheck(const void *buffer1, SceSize size, void *buffer2, SceUInt32 identifier);

sceNpDrmPackageIsGameExist

Version	NID
1.69-3.60	0xB9337914

int sceNpDrmPackageIsGameExist();

_sceNpDrmPackageInstallStarted

Version	NID
1.69-3.60	0xCEC18DA4

// opt is of size 0x10
int _sceNpDrmPackageInstallStarted(int unk0, int unk1, int unk2, void* opt);

_sceNpDrmPackageDecrypt

Version	NID
1.69-3.60	0xD6F05ACC

typedef struct _sceNpDrmPackageDecrypt { // size is 0x10
  SceOff offset; //The offset in the encrypted data
  unsigned int identifier;
  uint32_t unk_C;
} _sceNpDrmPackageDecrypt_opt;

int _sceNpDrmPackageDecrypt(void * buffer, SceSize size, _sceNpDrmPackageDecrypt_opt * opt);

sceNpDrmPackageInstallOngoing

Version	NID
1.69-3.60	0xED0471FE

int sceNpDrmPackageInstallOngoing(int unk0, int unk1);

_sceNpDrmPackageUninstallFinished

Version	NID
3.60	0x23A28861

// opt is of size 0x8
int _sceNpDrmPackageUninstallFinished(int unk0, int unk1, int unk2, void* opt);

_sceNpDrmPackageUninstallStarted

Version	NID
3.60	0x4901C3E6

// opt is of size 0x10
int _sceNpDrmPackageUninstallStarted(int unk0, int unk1, int unk2, void* opt);

sceNpDrmPackageUninstallOngoing

Version	NID
3.60	0xF1FF6193

int sceNpDrmPackageUninstallOngoing(int unk0, int unk1);

unk_200D2DE4

Version	NID
3.60	0x200D2DE4

int unk_200D2DE4(int unk0, int unk1);

unk_4665E75A

Version	NID
3.60	0x4665E75A

// opt is of size 0x10
int unk_4665E75A(int unk0, int unk1, int unk2, void *opt);

unk_640C1724

Version	NID
3.60	0x640C1724

// opt is of size 0x8
int unk_640C1724(int unk0, int unk1, int unk2, void *opt);

unk_97BB85BD

Version	NID
3.60	0x97BB85BD

// opt is of size 0x10
int unk_97BB85BD(int unk0, int unk1, int unk2, void *opt)

unk_A5E0F38C

Version	NID
3.60	0xA5E0F38C

int unk_A5E0F38C(int unk0, int unk1);

unk_C75A775B

Version	NID
3.60	0xC75A775B

// opt is of size 0x8
int unk_C75A775B(int unk0, int unk1, int unk2, void *opt);

ScePsmDrm

scePsmDrmGetRifName

Version	NID
3.60	0x0D6470DA

This is a guessed name.

// license is of size 0x400
int scePsmDrmGetRifName(char *rif_name, void *license);

scePsmDrmGetDebugRifName

Version	NID
3.60	0x3E881391

This is a guessed name.

int scePsmDrmGetDebugRifName(char *rif_name);

scePsmDrmGetRifInfo

Version	NID
3.60	0xE31A6220

typedef struct ScePsmDrmGetRifInfoOpt { //size is 0x10
 SceUInt64 lic_start_time;
 SceUInt64 lic_exp_time;
} ScePsmDrmGetRifInfoOpt;

int scePsmDrmGetRifInfo(void *license, char *content_id, void *account_id, ScePsmDrmGetRifInfoOpt *pOpt);

scePsmDrmGetPsmRifKey

Version	NID
3.60	0x207A2C53

/**
* license is of size 0x400
* klicensee is of size 0x200
**/
int scePsmDrmGetPsmRifKey(void *license, void *klicensee, SceUInt32 *flags, SceUInt64 *lic_start_time, SceUInt64 *lic_exp_time);

scePsmDrmRemoveActData

Version	NID
3.60	0x0E193CBB

// pAccountId of removed tm0:/psmdrm/act.dat
int scePsmDrmRemoveActData(SceUInt64 *pAccountId);

scePsmDrmCheckActData

Version	NID
3.60	0xA89653B3

Calls #scePsmDrmCheckActDataForDriver.

typedef struct SceNpDrmCheckActDataOpt { // size is 0x10
SceUInt64 act_start_time;
SceUInt64 act_exp_time;
} SceNpDrmCheckActDataOpt;

int scePsmDrmCheckActData(SceUInt32 *act_type, SceUInt32 *unk2, SceUInt64 *pAccountId, SceNpDrmCheckActDataOpt *pOpt);

ScePsmDrmForDriver

scePsmDrmGetRifInfoForDriver

Version	NID
3.60	0x984F9017

This function is named after sceNpDrmGetRifInfoForDriver since arguments are very similar.

// license is of size 0x400
// content_id is of size 0x30
int scePsmDrmGetRifInfoForDriver(void *license, char *content_id, SceUInt64 *account_id, SceUInt64 *lic_start_time, SceUInt64 *lic_exp_time);

scePsmDrmGetRifPsmKeyForDriver

Version	NID
3.60	0x8C8CFD01

this function is named after sceNpDrmGetRifInfoForDriver since arguments are very similar

// license is of size 0x400
// klicensee is of size 0x200
int scePsmDrmGetRifPsmKeyForDriver(void *license, void *klicensee, SceUInt32 *flags, SceUInt64 *lic_start_time, SceUInt64 *lic_exp_time);

scePsmDrmWriteActDataForDriver

Version	NID
3.60	0xCB73E9D3

decrypts psm_act_data with aes_dec_key

creates tm0:/psmdrm if necessary

writes tm0:/psmdrm/act.dat

verifies sha256 - rca

//data is of size 0x400
int scePsmDrmWriteActDataForDriver(void *psm_act_data, const char *aes_dec_key);

scePsmDrmRemoveActDataForDriver

Version	NID
3.60	0x4CD5375C

Removes PSM DRM per-console activation data at tm0:/psmdrm/act.dat.

// pAccountId of removed tm0:/psmdrm/act.dat
int scePsmDrmRemoveActDataForDriver(SceUInt64 *pAccountId);

scePsmDrmUpdateActDataForDriver

Version	NID
3.60	0x791198CE

reads tm0:/psmdrm/act.dat

verifies RSA with sha256

decrypts Primary Key Table

int scePsmDrmUpdateActDataForDriver(void);

scePsmDrmCheckActDataForDriver

Version	NID
3.60	0xB09003A7

Gets information about currently loaded PSM act.dat.

int scePsmDrmCheckActDataForDriver(SceUInt32 *act_type, SceUInt32 *unk2, SceUInt64 *pAccountId, SceUInt64 *act_start_time, SceUInt64 *act_exp_time);

Package integrity checks

Disable hash/signature verification

To find the function responsible for package verification search for immediate 0x7F504B47 ('.PKG'). Inside it does a lot of stuff including determining the function that will do signature checks. Find the condition that looks like if ( (v62 & 7) == 3 ); below you will see the assignment check_func = &off_81009CFC;. To bypass signature checks you need to patch two functions located at this offset and offset+4, making them behave as "return 1" is enough. For reference, on 1.60 the functions are sub_81000310 and sub_81000AA4. sub_81000310 is the only function in this module that calls SceSblGcAuthMgrPkgForDriver_E459A9A8_imp.

Note that on 1.60 this module sometimes is loaded at different addresses between reboots.

Allow debug packages to be installed

Find the function that calls sceSblAIMgrIsCEXForDriver. Patch it to always return 1. On FW 1.60 it is at 0x81002d64.

Search for immediate 0x80870003, there should be two matches. Replace both with "MOV Reg, #0". On 1.60 the locations are 0x810035fe and 0x81004856.

RIF

The RIF file holds the klicensee for NPDRM contents. The RIF files are used as DRM licenses. For each installed PKG and Game Card you have a unique RIF file with proper information that is used when you open the game to verify if you own the game (or PKG). The RIF files holds important information as PSN Account ID, the key used to decrypt one of the SELF encryption layers.

PS Vita supports two different RIF file formats. The first format version (v0) is used by RIF files with 0x98 bytes size and the second version (v1) is used by RIF files with 0x200 bytes size. The difference between these formats is just the signature and some data used by PS Vita only. RIF version 0 only uses ECDSA Signature only whilst RIF Version 1 uses the ECDSA Signature and an extra RSA Signature.

Name	Offset	Size	Remarks
Version	0x0	0x2
Version Flag	0x2	0x2	0 or 1
License Flags	0x4	0x2	See [1].
DRM Type	0x6	0x2	See [2].
NP Account ID	0x8	0x8	NP Account ID (in little-endian) for Network and Local DRM, 8 first bytes of sha-1 of some key for Free DRM.
Content ID	0x10	0x30	CONTENT_ID
Encrypted account keyring index	0x40	0x10	Encrypted account keyring index for Network and Local DRM, 12 last bytes of sha-1 of some key + 4 bytes of zeroes for Free DRM.
Encrypted RIF Key	0x50	0x10	Used to get klicensee to decrypt NPDRM SELF/SPRX/EDAT/PFS files.
License start time	0x60	0x8	For human readable, convert to decimal and use an Epoch-Unix converter time format online.
License expiration time	0x68	0x8	If zeroed, there is no time limit. Used for PS+ time-limited content for example.
ECDSA Signature	0x70	0x28	Patched in most PS3 CFWs to allow unsigned RIF. See Rif_Junk on Rap2Rif by Flatz. Params are same as for act.dat.
Some Flag	0x98	0x4	Used by PS Vita only, not PSP nor PS3.
Some Flag	0x9C	0x4	Used by PS Vita only, not PSP nor PS3. ex: ?0x400?.
Encrypted RIF Key 2	0xA0	0x10	Used by PS Vita only, not PSP nor PS3. Used to get klicensee to decrypt NPDRM SELF/SPRX/EDAT/PFS files.
Unknown_B0	0xB0	0x10	Used by PS Vita only, not PSP nor PS3.
OpenPsId	0xC0	0x10	Used by PS Vita only, not PSP nor PS3. Checked only if License Flag 0x100 is set.
Unknown_D0	0xD0	0x10	Used by PS Vita only, not PSP nor PS3.
CMD56 handshake part	0xE0	0x14	Used by PS Vita only, not PSP nor PS3. Checked only if License Flag 0x400 is set.
Unknown_F4	0xF4	0x4	Used by PS Vita only, not PSP nor PS3. Some flag related to debug_upgradable. ex: 0 (default), 1 (seen on a PSP2 gamecard).
Unknown_F8	0xF8	0x4	Used by PS Vita only, not PSP nor PS3.
SKU flag	0xFC	0x4	Used by PS Vita only, not PSP nor PS3. Some flag related to debug_upgradable.
RSA Signature	0x100	0x100	Used by PS Vita only, not PSP nor PS3.

PSM-ACT

PSM Activation file

Name	Offset	Size	Example	Remark
Magic	0x0	0x8	"PSM-ACT"
Unknown1	0x8	0x8	00 00 00 00 00 00 00 00
Account Id	0x10	0x8	91 78 34 02 01 EF CD AB	PSN account ID (little endian)
Unknown2	0x18	0x4	00 00 00 00	Must be 0
Unknown3	0x1C	0x4	00 00 00 00	Must be 0
Activation start time	0x20	0x8	00 00 01 4C 16 4D 83 A8
Activation expiration time	0x28	0x8	00 00 04 2A D4 3D 3E 68
SHA256 from act.dat	0x30	0x20		SHA256 digest of get_act_data (0x39222A58)
Unknown4	0x50	0xB0		Zeros
Unknown5	0x100	0x200		KEY saved at 0x22C8 - Decrypted with 0x2288
RSA signature	0x300	0x100

PSM-RIF

PSM RIF file

Name	Offset	Size	Example	Remark
Magic	0x0	0x8	"PSM-RIF"
Unknown1	0x8	0x4	00 00 00 01	Maybe Version and Version Flag?
Unknown2	0xC	0x4	00 00 00 00	Maybe DRM Type and License Flags?
Account ID	0x10	0x8	91 78 34 02 01 EF CD AB	PSN account ID (little endian)
Unknown3	0x18	0x4	00 00 00 00	Must be 0
Unknown4	0x1C	0x4	00 00 00 00	Must be 0
Activation start time	0x20	0x8	00 00 01 4C 16 4D 83 A8
Activation expiration time	0x28	0x8	7F FF FF FF FF FF FF FF	Max Value
SHA256 from act.dat	0x30	0x20		SHA256 digest of get_act_data (0x39222A58)
Content ID	0x50	0x30	EM0041-NPOA00013_00-0000000000000000
Unknown5	0x80	0x80		Zeros
Unknown6	0x100	0x200		Key saved at 0x1F40. First 0x200 bytes are decrypted with 0x22C8 and then only the first 0x20 bytes are again decrypted with 0x2288
RSA signature	0x300	0x100