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我正在尝试使用 R 向 Kucoin 交易所发出 API 请求。我当前的代码如下。我无法为 API 调用获取签名和密码。有什么想法吗？谢谢。

api_key          <- "my_api_key"
api_secret       <- "my_api_secret"
api_passphrase   <- "my_api_passphrase"

url              <- 'https://api.kucoin.com/api/v1/accounts'
now              <- as.numeric(Sys.time()) * 1000
str_to_sign      <- paste0(as.character(now), 'GET', '/api/v1/accounts')

signature        <- base64.b64encode(
                            hmac(api_secret.encode('utf-8'), 
                            str_to_sign.encode('utf-8'), 
                            hashlib.sha256).digest())

passphrase       <- base64.b64encode(
                            hmac.new(api_secret.encode('utf-8'), 
                            api_passphrase.encode('utf-8'), 
                            hashlib.sha256).digest())
headers = {
    "KC-API-SIGN": signature,
    "KC-API-TIMESTAMP": as.character(now),
    "KC-API-KEY": api_key,
    "KC-API-PASSPHRASE": passphrase,
    "KC-API-KEY-VERSION": "2"
}

response <- request('get', url, headers=headers)
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