GDAX / Coinbase API 身份验证过程：Unicode 对象必须在散列前编码

Question

我有很多编码经验，但 Python 对我来说是新领域。

我正在使用 CoinbaseExchangeAuth class 访问 GDAX API 的私有端点。我写了一些简单的代码...

api_url = 'https://public.sandbox.gdax.com/'
auth = CoinbaseExchangeAuth(API_KEY, API_SECRET, API_PASS)

（请注意，我已经在这些代码行之前准确定义了 api 密钥、秘密并正确传递 - 对于沙箱）

然后我写：

r = requests.get(api_url + 'accounts', auth=auth)

运行代码并得到这个错误：

File "a:\PythonCryptoBot\Bot1.0\CoinbaseExhangeAuth.py", line 16, in call signature = hmac.new(hmackey, message, hashlib.sha256) File "C:\Users\Dylan\AppData\Local\Programs\Python\Python35-32\lib\hmac.py", line 144, in new return HMAC(key, msg, digestmod) File "C:\Users\Dylan\AppData\Local\Programs\Python\Python35-32\lib\hmac.py", line 84, in __init_ self.update(msg) File "C:\Users\Dylan\AppData\Local\Programs\Python\Python35-32\lib\hmac.py", line 93, in update self.inner.update(msg) TypeError: Unicode-objects must be encoded before hashing

另请注意，我已尝试 API_KEY.encode('utf-8') 并且与其他人一样。 - 似乎什么也没做。

Answer 1

您使用的代码是为 Python2 编写的，您不能指望它是运行。我修改了一些部分以使其 Python3 兼容。

原代码：

import json, hmac, hashlib, time, requests, base64
from requests.auth import AuthBase

# Create custom authentication for Exchange
class CoinbaseExchangeAuth(AuthBase):
    def __init__(self, api_key, secret_key, passphrase):
        self.api_key = api_key
        self.secret_key = secret_key
        self.passphrase = passphrase

    def __call__(self, request):
        timestamp = str(time.time())
        message = timestamp + request.method + request.path_url + (request.body or '')
        hmac_key = base64.b64decode(self.secret_key)
        signature = hmac.new(hmac_key, message, hashlib.sha256)
        signature_b64 = signature.digest().encode('base64').rstrip('\n')

        request.headers.update({
            'CB-ACCESS-SIGN': signature_b64,
            'CB-ACCESS-TIMESTAMP': timestamp,
            'CB-ACCESS-KEY': self.api_key,
            'CB-ACCESS-PASSPHRASE': self.passphrase,
            'Content-Type': 'application/json'
        })
        return request

api_url = 'https://api.gdax.com/'
auth = CoinbaseExchangeAuth(API_KEY, API_SECRET, API_PASS)

# Get accounts
r = requests.get(api_url + 'accounts', auth=auth)
print r.json()
# [{"id": "a1b2c3d4", "balance":...

# Place an order
order = {
    'size': 1.0,
    'price': 1.0,
    'side': 'buy',
    'product_id': 'BTC-USD',
}
r = requests.post(api_url + 'orders', json=order, auth=auth)
print r.json()

修改后的代码：

import json, hmac, hashlib, time, requests, base64
from requests.auth import AuthBase

# Create custom authentication for Exchange
class CoinbaseExchangeAuth(AuthBase):
    def __init__(self, api_key, secret_key, passphrase):
        self.api_key = api_key
        self.secret_key = secret_key
        self.passphrase = passphrase

    def __call__(self, request):
        timestamp = str(time.time())
        message = timestamp + request.method + request.path_url + (request.body or b'').decode()
        hmac_key = base64.b64decode(self.secret_key)
        signature = hmac.new(hmac_key, message.encode(), hashlib.sha256)
        signature_b64 = base64.b64encode(signature.digest()).decode()

        request.headers.update({
            'CB-ACCESS-SIGN': signature_b64,
            'CB-ACCESS-TIMESTAMP': timestamp,
            'CB-ACCESS-KEY': self.api_key,
            'CB-ACCESS-PASSPHRASE': self.passphrase,
            'Content-Type': 'application/json'
        })
        return request

api_url = 'https://api.gdax.com/'
auth = CoinbaseExchangeAuth(APIKEY, API_SECRET,  API_PASS)

# Get accounts
r = requests.get(api_url + 'accounts', auth=auth)
print(r.json())
# [{"id": "a1b2c3d4", "balance":...

# Place an order
order = {
    'size': 1.0,
    'price': 1.0,
    'side': 'buy',
    'product_id': 'BTC-USD',
}
r = requests.post(api_url + 'orders', json=order, auth=auth)
print(r.json())

请注意，我只有 "translated" 原始代码，我无法保证其功能或安全性。

Answer 2

您发布的修改后的代码对我来说不太管用，但这个确实管用！

import hmac, hashlib, time, requests, os
from requests.auth import AuthBase


API_KEY = os.environ.get('API_KEY')
API_SECRET = os.environ.get('API_SECRET')


# Create custom authentication for Coinbase API
class CoinbaseWalletAuth(AuthBase):
    def __init__(self, api_key, secret_key):
        self.api_key = api_key
        self.secret_key = secret_key

    def __call__(self, request):
        timestamp = str(int(time.time()))
        message = timestamp + request.method + request.path_url + (request.body or b'').decode()
        signature = hmac.new(bytes(self.secret_key,'utf-8'), message.encode('utf-8'), hashlib.sha256).hexdigest()

        request.headers.update({
            'CB-ACCESS-SIGN': signature,
            'CB-ACCESS-TIMESTAMP': timestamp,
            'CB-ACCESS-KEY': self.api_key,
            'CB-VERSION': '2019-11-15'
        })
        return request


api_url = 'https://api.coinbase.com/v2/'
auth = CoinbaseWalletAuth(API_KEY, API_SECRET)

# Get current user
r = requests.get(api_url + 'accounts', auth=auth)
print(r.json())

GDAX / Coinbase API 身份验证过程：Unicode 对象必须在散列前编码

GDAX / Coinbase API authentication process: Unicode-objects must be encoded before hashing

python

api

unicode

coinbase-api

gdax-api