bahorn · October 27, 2023 15:07 · pergolafabio · Dec 14, 2022 · pergolafabio · Dec 22, 2022
diff --git a/sign.py b/sign.py
 import requests
 import hashlib
 import time
 import uuid
 import os
 import copy
 import json

 # This is based on my personal implementation but stripped down to only what is
 # needed to verify it.
 # This should correct anywhere I was unclear in my original post.
 # I developed against a Mobile API key, which is why I used the mobile methods
 # in my test cases.
 # Signing works the same with the Cloud API. You get a "NO_PERMISSION" if your
 # keys aren't valid for the request, but if you sign wrong, you'll get a error
 # related to signing instead, which is checked earlier on their end.

 # The signing process is also leaked in the mobile apps (which are all
 # rebrandings, no joke) in the Android logs.

 ## For mobile app keys:
 ## Be careful about which host you use. If you are registered in the US, use the
 ## US host.

 host = "https://a1.tuyaeu.com/api.json"

 # Random and not really checked. Should keep persistent if you are using
 # sessions.
 device_id = os.urandom(32).encode('hex')
 sid = "" # Used to mobile requests that require login.
 # Needs to be set, but they don't care what it is.
 os = ("TEST", "0.1.2", "TEST")
 # Your API keys.
 appKey = "<BLANKED>"
 appSecret = "<BLANKED>"

 # This is likely a cause of confusion. They decided for this and only this to
 # rearrange the hash. Not their normal md5-mid which they use a lot in their
 # MQTT client.
 def post_data_hash_transform(post_data):
    h = hashlib.md5()
    h.update(post_data)
    pre_hash = h.hexdigest()
    return pre_hash[8:16] + pre_hash[0:8] + pre_hash[24:32] + pre_hash[16:24]

 # This is the implementation of "sign".
 def generate_request_sign(pairs):
    # This are the values that get "signed" in a request, worth checking if I
    # missed one in this list.
    values_to_hash = ["a", "v", "lat", "lon", "lang", "deviceId", "imei",
                        "imsi", "appVersion", "ttid", "isH5", "h5Token", "os",
                        "clientId", "postData", "time", "n4h5", "sid", "sp"]
    out = []
    sorted_pairs = sorted(pairs)
    for item in sorted_pairs:
        if item not in values_to_hash:
            continue
        if pairs[item] == "":
            continue
        if item == "postData":
            out += [item + "=" + post_data_hash_transform(pairs["postData"])]
        else:
            out += [item + "=" + str(pairs[item])]
    sign_request = "||".join(out) + "||" + appSecret
    h = hashlib.md5()
    h.update(sign_request)
    return h.hexdigest()

 # This will give you a dict with all the request parameters.
 def url_generator(action, version, post_data=None, sid=None, time_param=None):
    client_id = appKey
    ttid = "sdk_google1@{}".format(appKey)
    timezone_id = "America/New_York"
    lang = "en"
    if not time_param:
        time_param = int(time.time())
    request_id = uuid.uuid4()
    pairs = {
        "sdkVersion": "1.11.11",
        "platform": os[2],
        "ttid": ttid,
        "a": action,
        "timeZoneId": timezone_id,
        "deviceId": device_id,
        "osSystem": os[1],
        "os": os[0],
        "v": version,
        "appVersion": "2.9.1",
        "clientId": client_id,
        "lang": lang,
        "requestId": request_id,
        "time": time_param,
        "appRnVersion": "2.9",
    }

    if sid:
        pairs['sid'] = sid
    to_sign = copy.deepcopy(pairs)
    if post_data:
        to_sign['postData'] = post_data
    pairs['sign'] = generate_request_sign(to_sign)
    return pairs

 # Call the endpoint.
 # * action is the name as defined in the tuya docs
 # * version is the version they say to provide, normally "1.0"
 # * data is the JSON data you want to pass to the action
 # * requires_sid means it adds a session_id to the parameters. Used in mobile endpoints.
 def preform_action(action, version, data=None, requires_sid=False):
    if requires_sid is True and not sid:
        return None
    params = url_generator(action, version, data, sid)
    print params
    endpoint = host
    headers = {
        # Maybe set a user agent or something here.
    }
    if data:
        r = requests.post(endpoint, params=params, data={"postData":data},
                          headers=headers)
    else:
        r = requests.post(endpoint, params=params, headers=headers)
    return r.status_code, r.json(), r.headers

 if __name__ == "__main__":
    # Should return a list of countries, doesn't use post data.
    print preform_action("tuya.m.country.list", "1.0")
    # Attempt to login with a fake email, takes POST data.
    attempt = {
        "email":"fake_email_attempt@fake_email.com",
        "countryCode":1
    }
    print preform_action("tuya.m.user.email.token.create", "1.0",
                         json.dumps(attempt))
	import requests
	import hashlib
	import time
	import uuid
	import os
	import copy
	import json

	# This is based on my personal implementation but stripped down to only what is
	# needed to verify it.
	# This should correct anywhere I was unclear in my original post.
	# I developed against a Mobile API key, which is why I used the mobile methods
	# in my test cases.
	# Signing works the same with the Cloud API. You get a "NO_PERMISSION" if your
	# keys aren't valid for the request, but if you sign wrong, you'll get a error
	# related to signing instead, which is checked earlier on their end.

	# The signing process is also leaked in the mobile apps (which are all
	# rebrandings, no joke) in the Android logs.

	## For mobile app keys:
	## Be careful about which host you use. If you are registered in the US, use the
	## US host.

	host = "https://a1.tuyaeu.com/api.json"

	# Random and not really checked. Should keep persistent if you are using
	# sessions.
	device_id = os.urandom(32).encode('hex')
	sid = "" # Used to mobile requests that require login.
	# Needs to be set, but they don't care what it is.
	os = ("TEST", "0.1.2", "TEST")
	# Your API keys.
	appKey = "<BLANKED>"
	appSecret = "<BLANKED>"

	# This is likely a cause of confusion. They decided for this and only this to
	# rearrange the hash. Not their normal md5-mid which they use a lot in their
	# MQTT client.
	def post_data_hash_transform(post_data):
	h = hashlib.md5()
	h.update(post_data)
	pre_hash = h.hexdigest()
	return pre_hash[8:16] + pre_hash[0:8] + pre_hash[24:32] + pre_hash[16:24]

	# This is the implementation of "sign".
	def generate_request_sign(pairs):
	# This are the values that get "signed" in a request, worth checking if I
	# missed one in this list.
	values_to_hash = ["a", "v", "lat", "lon", "lang", "deviceId", "imei",
	"imsi", "appVersion", "ttid", "isH5", "h5Token", "os",
	"clientId", "postData", "time", "n4h5", "sid", "sp"]
	out = []
	sorted_pairs = sorted(pairs)
	for item in sorted_pairs:
	if item not in values_to_hash:
	continue
	if pairs[item] == "":
	continue
	if item == "postData":
	out += [item + "=" + post_data_hash_transform(pairs["postData"])]
	else:
	out += [item + "=" + str(pairs[item])]
	sign_request = "\|\|".join(out) + "\|\|" + appSecret
	h = hashlib.md5()
	h.update(sign_request)
	return h.hexdigest()

	# This will give you a dict with all the request parameters.
	def url_generator(action, version, post_data=None, sid=None, time_param=None):
	client_id = appKey
	ttid = "sdk_google1@{}".format(appKey)
	timezone_id = "America/New_York"
	lang = "en"
	if not time_param:
	time_param = int(time.time())
	request_id = uuid.uuid4()
	pairs = {
	"sdkVersion": "1.11.11",
	"platform": os[2],
	"ttid": ttid,
	"a": action,
	"timeZoneId": timezone_id,
	"deviceId": device_id,
	"osSystem": os[1],
	"os": os[0],
	"v": version,
	"appVersion": "2.9.1",
	"clientId": client_id,
	"lang": lang,
	"requestId": request_id,
	"time": time_param,
	"appRnVersion": "2.9",
	}

	if sid:
	pairs['sid'] = sid
	to_sign = copy.deepcopy(pairs)
	if post_data:
	to_sign['postData'] = post_data
	pairs['sign'] = generate_request_sign(to_sign)
	return pairs

	# Call the endpoint.
	# * action is the name as defined in the tuya docs
	# * version is the version they say to provide, normally "1.0"
	# * data is the JSON data you want to pass to the action
	# * requires_sid means it adds a session_id to the parameters. Used in mobile endpoints.
	def preform_action(action, version, data=None, requires_sid=False):
	if requires_sid is True and not sid:
	return None
	params = url_generator(action, version, data, sid)
	print params
	endpoint = host
	headers = {
	# Maybe set a user agent or something here.
	}
	if data:
	r = requests.post(endpoint, params=params, data={"postData":data},
	headers=headers)
	else:
	r = requests.post(endpoint, params=params, headers=headers)
	return r.status_code, r.json(), r.headers

	if __name__ == "__main__":
	# Should return a list of countries, doesn't use post data.
	print preform_action("tuya.m.country.list", "1.0")
	# Attempt to login with a fake email, takes POST data.
	attempt = {
	"email":"fake_email_attempt@fake_email.com",
	"countryCode":1
	}
	print preform_action("tuya.m.user.email.token.create", "1.0",
	json.dumps(attempt))