如何为CoinBase API调用声明CURL主体 [英] How to declare CURL body for CoinBase API call

问题描述

我目前正在使用Coinbase的API开发小型应用程序。

I am currently working on a small app using the API of Coinbase.

Coinbase需要CB-ACCESS-SIGN标头进行身份验证。 CB-ACCESS-SIGN标头是通过使用预哈希字符串时间戳+方法+ requestPath +正文（其中+表示字符串串联）上的密钥创建sha256 HMAC生成的。

Coinbase needed CB-ACCESS-SIGN header to authenticate. The CB-ACCESS-SIGN header is generated by creating a sha256 HMAC using the secret key on the prehash string timestamp + method + requestPath + body (where + represents string concatenation).

参考页面 https://developers.coinbase.com/api/v2？ shell＃api-key

创建地址，基于以下地址： https://developers.coinbase.com/api/v2?shell#create-address 。我写了命令：

to create address, based from: https://developers.coinbase.com/api/v2?shell#create-address. I wrote command :

    $timestamp = time();
    $method = 'POST';
    $request_path = '/v2/accounts';
    $body = 'addresses';

    $account_id = 'myaaccount_id';
    $hash_input = $timestamp.''.$method.''.$request_path.''.$body;
    $apiSecret = 'myapi secret';
    $signature = hash_hmac('sha256', $hash_input, $apiSecret);
    $accesskey = 'myaccess_key';

    $ch = curl_init();

    curl_setopt($ch, CURLOPT_URL, 'https://api.coinbase.com/v2/accounts/'.$account_id.'/addresses');
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
    curl_setopt($ch, CURLOPT_CUSTOMREQUEST, 'POST');


    $headers = array();
    $headers[] = 'Cb-Access-Key: '.$accesskey;
    $headers[] = 'Cb-Access-Sign: '.$signature;
    $headers[] = 'Cb-Access-Timestamp: '.$timestamp;
    $headers[] = 'Cb-version: 2016-12-07';
    curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);

    $result = curl_exec($ch);
    if (curl_errno($ch)) {
        echo 'Error:' . curl_error($ch);
    }
    curl_close ($ch);

但我总是得到响应：

{"errors":[{"id":"authentication_error","message":"invalid signature"}]}

我认为问题在于CB-ACCESS-SIGN的请求正文

I think the problem is the request body at CB-ACCESS-SIGN

正文（其中+表示字符串连接）。

body (where + represents string concatenation).

正文值在哪里？

推荐答案

创建签名，如下所示：

$Datas = $timestamp.$method.$request_path;
$hmacSig = base64_encode(hash_hmac("sha256", $Datas, base64_decode($apiSecret), true));

这篇关于如何为CoinBase API调用声明CURL主体的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！