Keys

Geometry Dash uses XOR Cipher combined with base64 encoding to protect various strings within the client. Multiple Keys are used to protect different aspects of the game

XOR Keys

Key	Usage	XOR Type
11*	Player Save Data	Singular
14251	Player Messages	Cycled
19283	Vault Codes	Cycled
19847	Daily Challenges	Cycled
26364	Level Password	Cycled
29481	Comment Integrity	Cycled
37526	Account Password	Cycled
39673	Level Leaderboard Integrity	Cycled
41274	Level Integrity	Cycled
48291	Load Data	Cycled
52832	Multiplayer	Cycled
57709	Music/SFX Library Secret	Cycled
58281	Rating Integrity	Cycled
59182	Chest Rewards	Cycled
85271	Stat Submission Integrity	Cycled

• *11 in this case refers to the literal 11 (0x0B) byte, not the number 11

XOR Types

There are two ways Geometry Dash applies XOR Cipher to strings - Static and Cycled

• Static Ciphers apply the key as is without any changes applying to the key itself.
• Cycled Ciphers iterate through each value on the key one by one and then loops back once it reaches the end.