> For the complete documentation index, see [llms.txt](https://docs.coda.co/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.coda.co/https-coda-payments.gitbook.io-zhong-wen-coda-private-technical-documentation/codapay/hou-duan-api-ji-cheng/direct-card-api-ji-cheng/ru-men-zhi-nan/shen-fen-yan-zheng-he-shou-quan.md).

# 身份验证和授权

### 身份验证指南 <a href="#authentication-guide" id="authentication-guide"></a>

Direct Card API 支持 JWT 和 x-signature 作为主要身份验证机制。要向我们的系统发送请求，您需要进行身份验证。为此，您需要在 API 请求的标头中包含以下字段：

* 内容类型
* X-API密钥
* 授权

X签名用于通知端点。有关更多详细信息，请[参阅“获取交易状态更改通知” 。](https://docs.coda.co/codapay/hosted-payment-page-integration/get-notified-of-a-transaction-status-change)

这些参数的描述如下表所示：

| 参数名称    | 描述                             | 必需的 | 验证/示例                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    |
| ------- | ------------------------------ | --- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| 内容类型    | 指示资源的原始媒体类型                    | 是   | 该值必须为“application/json”。                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |
| X-API密钥 | 您的 API 密钥                      | 是   | X-API密钥：9ezEvY3UZv72ouqeLnzeL45ylrbPdZ5C6Y3e2c1H                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |
| 授权      | 根据标头、有效负载和签名生成 JSON Web Token。 | 是   | <p>授权：</p><p>持有人</p><p>eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9。</p><p>eyJhcGlLZXkiOiIzOWFhNmI5ZDhjNGZmYjFhOT</p><p>QwM2I1MTQ2OWVmZDQ3ZSIsIm9yZGVySWQi</p><p>OiIyMDIwMDMzMDE0MjYwMCIsImxhbmciOiJlb</p><p>iIsIm1lcmNoYW50TmFtZSI6Iktva28gZUJvb2tzIiwi</p><p>cGF5VHlwZSI6NSwicGF5Q2hhbm5lbCI6MzMyLC</p><p>JwYXlQcm92aWRlciI6NTA2LCJpdGVtcyI6W3siY2</p><p>9kZSI6IjEiLCJuYW1lIjoiT25lIERheSIsInByaWNlIjoxM</p><p>H1dLCJpYXQiOjE1ODU3MDE3MzMsImNoZWNrc</p><p>3VtIjoiZjQwZmM5ZTc0ZDY2MmRhZmY1MDc0MD</p><p>NiZmM3YmEyOGUifQ.1vnmI6ayPNMHV9FNyx1</p> |
| x签名     | 要执行完整性检查，需要校验和的签名值。            | 是   | pOsnb4LGor0/iOPsc/7ufSiQHslKkV6/iJ6c6tEpP3k=                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |

<br>


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