Sje.jhh: Difference between revisions
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* 4 bytes - entry data length | * 4 bytes - entry data length | ||
== Index | == Index encryption == | ||
[http://en.wikipedia.org/wiki/Rc4 Rc4 stream cipher] is used. | [http://en.wikipedia.org/wiki/Rc4 Rc4 stream cipher] is used. | ||
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</pre> | </pre> | ||
== Content | == Content encryption == | ||
Text content files are encrypted too. | Text content files are encrypted too. | ||
Encyption is same as index encryption, but "TOJ" password is used instead of "1111". | Encyption is same as index encryption, but "TOJ" password is used instead of "1111". |
Latest revision as of 19:27, 25 June 2010
Game resource archive used by TOJ.
File format
- 4 bytes - index section offset
- 4 bytes - index section length
- [data section]
- [index section (encrypted)]
Index section format
- 4 bytes - number of entries
- 4 bytes - length of path string
- string - path
- [entries]
Entry format
- 4 bytes - length of entry filename string
- string - entry filename
- 4 bytes - entry data offset
- 4 bytes - entry data length
Index encryption
Rc4 stream cipher is used.
Encryption/decryption is done with advapi32 Crypt functions with following key and settings:
password = "1111"; CryptAcquireContext(&hCryptProv, NULL, MS_DEF_PROV, PROV_RSA_FULL, 0); CryptCreateHash(hCryptProv, CALG_MD5, 0, 0, &hHash); CryptHashData(hHash, (BYTE *) password, strlen(password), 0); CryptDeriveKey(hCryptProv, CALG_RC4, hHash, 4, &hKey);
First bytes of keystream are:
BA 38 72 06 03 1D 16 65 77 D3 28 EE 9D 12 40 44 8A DB B7 00 1B 3D C5 93 81 16 E2 21 62 8D 34 8A 70 28 30 A3 41 C5 F9 25 B0 AA 84 2A 34 3F BC 45 2F 8E 7B 7F D3 9D 75 DB 3D 33 3E 71 2F DD ...
Content encryption
Text content files are encrypted too. Encyption is same as index encryption, but "TOJ" password is used instead of "1111".
On 2010-06-14 password was changed to "dkaghdkagh".
On 2010-06-15 password was changed to 93 FA 96 7B 8C EA 01 20 82 CC 31 0D 0A 01 .