Beatmania IIDX 4th style

This page contains notes for the game Beatmania IIDX 4th style.

The Encryption#

Natively, all files in the folder DATA in the game's program disc are encrypted with a XOR key, which can be seen below. This key is also used by beatmania IIDX 5th style.

96 88 06 40 26 68 26 70 D6 88 C6 70 76 18 16 B0
B6 D8 E6 D0 B6 38 36 40 66 C8 46 30 36 B8 B6 20
D6 F8 D6 A0 C6 D8 66 40 F6 18 56 60 16 D8 C6 70
B6 D8 06 20 C6 C8 66 A0 76 C8 16 E0 D6 28 C6 00
A6 68 66 80 06 48 A6 70 96 E8 16 D0 A6 58 A6 20
C6 08 16 90 F6 E8 16 C0 36 B8 26 E0 36 A8 F6 F0
26 28 86 30 C6 28 76 70 A6 28 B6 50 76 D8 06 50
96 F8 86 10 16 28 C6 20 F6 28 06 A0 56 38 B6 A0
16 58 06 10 B6 18 A6 C0 26 48 66 70 B6 B8 66 B0
56 A8 76 D0 36 E8 76 60 F6 D8 D6 20 26 48 16 A0
36 18 B6 70 46 58 26 30 C6 B8 86 B0 66 F8 06 90
66 C8 46 50 C6 58 96 00 16 68 76 F0 36 28 66 40
56 98 26 A0 56 98 26 E0 86 78 46 70 76 18 36 B0
16 28 76 30 E6 A8 16 90 B6 E8 76 00 86 68 96 10
46 48 06 00 F6 68 F6 80 A6 D8 B6 50 66 68 06 80