wzlib-rs 0.1.1

MapleStory WZ file parser — Rust core with optional WASM bindings
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81

#[rustfmt::skip]
#[allow(non_upper_case_globals)]
pub static UserKey: [u8; 128] = [
    0x13, 0x00, 0x00, 0x00, 0x52, 0x00, 0x00, 0x00,
    0x2A, 0x00, 0x00, 0x00, 0x5B, 0x00, 0x00, 0x00,
    0x08, 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00,
    0x10, 0x00, 0x00, 0x00, 0x60, 0x00, 0x00, 0x00,
    0x06, 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00,
    0x43, 0x00, 0x00, 0x00, 0x0F, 0x00, 0x00, 0x00,
    0xB4, 0x00, 0x00, 0x00, 0x4B, 0x00, 0x00, 0x00,
    0x35, 0x00, 0x00, 0x00, 0x05, 0x00, 0x00, 0x00,
    0x1B, 0x00, 0x00, 0x00, 0x0A, 0x00, 0x00, 0x00,
    0x5F, 0x00, 0x00, 0x00, 0x09, 0x00, 0x00, 0x00,
    0x0F, 0x00, 0x00, 0x00, 0x50, 0x00, 0x00, 0x00,
    0x0C, 0x00, 0x00, 0x00, 0x1B, 0x00, 0x00, 0x00,
    0x33, 0x00, 0x00, 0x00, 0x55, 0x00, 0x00, 0x00,
    0x01, 0x00, 0x00, 0x00, 0x09, 0x00, 0x00, 0x00,
    0x52, 0x00, 0x00, 0x00, 0xDE, 0x00, 0x00, 0x00,
    0xC7, 0x00, 0x00, 0x00, 0x1E, 0x00, 0x00, 0x00,
];

// C# samples indices 0,16,32,48,64,80,96,112 into key[0,4,8,12,16,20,24,28].
pub fn trimmed_user_key() -> [u8; 32] {
    let mut key = [0u8; 32];
    for i in 0..8 {
        key[i * 4] = UserKey[i * 16];
    }
    key
}

pub const WZ_GMSIV: [u8; 4] = [0x4D, 0x23, 0xC7, 0x2B];       // GMS
pub const WZ_MSEAIV: [u8; 4] = [0xB9, 0x7D, 0x63, 0xE9];      // MSEA/EMS
pub const WZ_BMSCLASSIC_IV: [u8; 4] = [0x00, 0x00, 0x00, 0x00]; // BMS/Classic (unencrypted)

/// Trim a 128-byte user key to 32 bytes by sampling indices 0,16,32,...,112.
pub fn trimmed_key_from(user_key: &[u8; 128]) -> [u8; 32] {
    let mut key = [0u8; 32];
    for i in 0..8 {
        key[i * 4] = user_key[i * 16];
    }
    key
}

pub const WZ_OFFSET_CONSTANT: u32 = 0x581C3F6D;

#[rustfmt::skip]
pub static SHUFFLE_TABLE: [u8; 256] = [
    0xEC, 0x3F, 0x77, 0xA4, 0x45, 0xD0, 0x71, 0xBF,
    0xB7, 0x98, 0x20, 0xFC, 0x4B, 0xE9, 0xB3, 0xE1,
    0x5C, 0x22, 0xF7, 0x0C, 0x44, 0x1B, 0x81, 0xBD,
    0x63, 0x8D, 0xD4, 0xC3, 0xF2, 0x10, 0x19, 0xE0,
    0xFB, 0xA1, 0x6E, 0x66, 0xEA, 0xAE, 0xD6, 0xCE,
    0x06, 0x18, 0x4E, 0xEB, 0x78, 0x95, 0xDB, 0xBA,
    0xB6, 0x42, 0x7A, 0x2A, 0x83, 0x0B, 0x54, 0x67,
    0x6D, 0xE8, 0x65, 0xE7, 0x2F, 0x07, 0xF3, 0xAA,
    0x27, 0x7B, 0x85, 0xB0, 0x26, 0xFD, 0x8B, 0xA9,
    0xFA, 0xBE, 0xA8, 0xD7, 0xCB, 0xCC, 0x92, 0xDA,
    0xF9, 0x93, 0x60, 0x2D, 0xDD, 0xD2, 0xA2, 0x9B,
    0x39, 0x5F, 0x82, 0x21, 0x4C, 0x69, 0xF8, 0x31,
    0x87, 0xEE, 0x8E, 0xAD, 0x8C, 0x6A, 0xBC, 0xB5,
    0x6B, 0x59, 0x13, 0xF1, 0x04, 0x00, 0xF6, 0x5A,
    0x35, 0x79, 0x48, 0x8F, 0x15, 0xCD, 0x97, 0x57,
    0x12, 0x3E, 0x37, 0xFF, 0x9D, 0x4F, 0x51, 0xF5,
    0xA3, 0x70, 0xBB, 0x14, 0x75, 0xC2, 0xB8, 0x72,
    0xC0, 0xED, 0x7D, 0x68, 0xC9, 0x2E, 0x0D, 0x62,
    0x46, 0x17, 0x11, 0x4D, 0x6C, 0xC4, 0x7E, 0x53,
    0xC1, 0x25, 0xC7, 0x9A, 0x1C, 0x88, 0x58, 0x2C,
    0x89, 0xDC, 0x02, 0x64, 0x40, 0x01, 0x5D, 0x38,
    0xA5, 0xE2, 0xAF, 0x55, 0xD5, 0xEF, 0x1A, 0x7C,
    0xA7, 0x5B, 0xA6, 0x6F, 0x86, 0x9F, 0x73, 0xE6,
    0x0A, 0xDE, 0x2B, 0x99, 0x4A, 0x47, 0x9C, 0xDF,
    0x09, 0x76, 0x9E, 0x30, 0x0E, 0xE4, 0xB2, 0x94,
    0xA0, 0x3B, 0x34, 0x1D, 0x28, 0x0F, 0x36, 0xE3,
    0x23, 0xB4, 0x03, 0xD8, 0x90, 0xC8, 0x3C, 0xFE,
    0x5E, 0x32, 0x24, 0x50, 0x1F, 0x3A, 0x43, 0x8A,
    0x96, 0x41, 0x74, 0xAC, 0x52, 0x33, 0xF0, 0xD9,
    0x29, 0x80, 0xB1, 0x16, 0xD3, 0xAB, 0x91, 0xB9,
    0x84, 0x7F, 0x61, 0x1E, 0xCF, 0xC5, 0xD1, 0x56,
    0x3D, 0xCA, 0xF4, 0x05, 0xC6, 0xE5, 0x08, 0x49,
];