GDAX / Coinbase API 身份验证过程:Unicode 对象必须在散列之前进行编码
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【中文标题】GDAX / Coinbase API 身份验证过程:Unicode 对象必须在散列之前进行编码【英文标题】:GDAX / Coinbase API authentication process: Unicode-objects must be encoded before hashing 【发布时间】:2018-05-29 05:14:12 【问题描述】:我有很多编码经验,但 Python 对我来说是一个新领域。
我正在使用CoinbaseExchangeAuth 类来访问 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,我已经准确地定义了 api 密钥、秘密并在这些代码行之前正确传递 - 用于沙盒)
然后我写:
r = requests.get(api_url + 'accounts', auth=auth)
运行代码并得到这个错误:
文件“a:\PythonCryptoBot\Bot1.0\CoinbaseExhangeAuth.py”,第 16 行,调用签名 = hmac.new(hmackey, message, hashlib.sha256) 文件“C:\Users\Dylan\AppData\Local \Programs\Python\Python35-32\lib\hmac.py”,第 144 行,在新返回 HMAC(key, msg, digestmod) 文件“C:\Users\Dylan\AppData\Local\Programs\Python\Python35-32 \lib\hmac.py”,第 84 行,在 __init_self.update(msg) 文件“C:\Users\Dylan\AppData\Local\Programs\Python\Python35-32\lib\hmac.py”,第 93 行, in update self.inner.update(msg) TypeError: Unicode-objects must be encrypted before hashing
另请注意,我尝试过 API_KEY.encode('utf-8') 和其他人一样。 - 似乎什么也没做。
【问题讨论】:
【参考方案1】:您使用的代码是为 Python2 编写的,您不能期望它按原样运行。我已经修改了一些部分以使其与 Python3 兼容。
原码:
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,我只是“翻译”了原始代码,我不能保证它的功能或安全性。
【讨论】:
所以,它现在肯定可以工作了,非常感谢。但现在我得到了这个错误。 Traceback(最近一次调用最后):文件“a:\PythonCryptoBot\Bot1.0\CoinbaseExhangeAuth.py”,第 88 行,在.json()
无法解析响应。你能打印r.text
和r.status_code
吗?
还有r.text
?是json吗?
当我尝试下订单时 r = requests.post(api_url + 'orders', json=order, auth=auth) 我得到状态码 405?这不是 gdax api 上可能出现的错误。嗯……
这很奇怪,我用python2和python3测试过,标题是相同的。唯一的区别是signature_b64
是字节,但这应该不是问题。反正我修好了。我会再做几个测试,如果我发现任何有用的东西,我会告诉你的【参考方案2】:
您发布的修改后的代码对我来说不太好用,但确实如此!
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())
【讨论】:
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