gjp.md

GJP

GJP is a parameter commonly sent as gjp in requests. It is used for account authentication, and commonly sent with the accountID parameter.

Encoding/Decoding

The GJP is your account password XOR-encoded with key "37526", and then encoded with base64.

To decode, take the GJP and decode it from base64, then XOR-encode it again (XOR encoding and decoding is identical).

The following code demonstrates this process programmatically:

Python

import base64

def encode_gjp(password: str) -> str:
	# put it through the xor cipher with the key "37526")
	encoded = xor_cipher(password, "37526")
	# encode the password to base64
	encoded_base64 = base64.b64encode(encoded.encode()).decode()
  encoded_base64 = encoded_base64.replace("+", "-")
  encoded_base64 = encoded_base64.replace("/", "_")

	return encoded_base64

def decode_gjp(gjp: str) -> str:
	# decode the password from base64
	decoded_base64 = base64.b64decode(gjp.encode()).decode()
	# put it through the xor cipher with the key "37526")
	decoded = xor_cipher(decoded_base64, "37526")

	return decoded