Activation ACF
ACF, certainly standing for Activation Code/Control/Console File/Flag, is a data structure present in the Serial Flash Non Volatile Storage of a PS4 Dev/Test Kit or prototype when it is activated.
On PS Vita, compared to PS4, it is named "act" instead of "acf" and is stored in Syscon NVS instead of Serial Flash NVS. On PS5, Kit activation requires a Communication Processor Box and so may be contained in the PS5 CP Box NVS.
See also PS Vita Activation AFV especially its token and PS Vita Syscon NVS Activation Data.
Structure
Total length is 0x68 bytes. It may also be 0x6C bytes for some PS4 consoles, according to zecoxao. It is written to a 0x80-byte area in Serial Flash Non Volatile Storage.
| Offset | Size | Description |
|---|---|---|
| 0 | 4 | Magic. Always "acf\0" on PS4, "act\0" on PS Vita. |
| 4 | 4 | Format Version. Contains format_major_ver and format_minor_ver. Always 01 02 00 00 on PS4, 01 00 00 00 on PS Vita. |
| 8 | 0x10 | Activation Key. Likely derived from OpenPsId. |
| 0x18 | 4 | Issue Number. Ex: 3, 15. |
| 0x1C | 4 | Start Date. Little Endian. |
| 0x20 | 4 | Expire Date. Little Endian. Usually 90 days since Start Date. |
| 0x24 | 4 | Reserved. Always zeroed. |
| 0x28 | 0x40 | Key Hash. Unique hash of previous data (maybe RSA, HMAC or AES-CMAC). On PS Vita it is a 16-byte AES-128-CMAC hash. |
typedef struct SceAcf {
char magic[4];
uint32_t format_ver;
char activation_key[16];
uint32_t issue_no;
uint32_t start_date;
uint32_t expire_date;
uint32_t reserved;
char key_hash[64];
} SceAcf;
Example
Structure and constant bytes are for every Dev / Test the same. Example:
- Magic bytes: red.
- Constant bytes: blue.
- Unique bytes: green.
Offset(h) 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F 001C9080 61 63 66 00 01 02 00 00 D6 B1 DA DE C7 82 7A A4 acf.....Ö±ÚÞÇ‚z¤ 001C9090 21 AE 4E D0 D9 BF B1 1A 03 00 00 00 11 55 E2 52 !®NÐÙ¿±......UâR 001C90A0 11 FC 58 53 00 00 00 00 CC B4 CD 3A 0A F5 C0 F4 .üXS....Ì´Í:.õÀô 001C90B0 4F 04 6B C3 95 16 E6 D8 FB 0B F2 56 B0 3B BA 00 O.kÕ.æØû.òV°;º. 001C90C0 26 B0 D3 BA 55 5F B0 40 0F 54 34 22 E1 E4 DA A7 &°ÓºU_°@.T4"áäÚ§ 001C90D0 D1 7D EE BC EF 03 3C 23 37 EE 10 EB F6 88 1B 85 Ñ}î¼ï.<#7î.ëöˆ.… 001C90E0 35 8F 4B F5 D5 1A C7 3D 5.KõÕ.Ç=