> 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/payout/ru-men-zhi-nan/ru-he-sheng-cheng-jwt-token.md).

# 如何生成 JWT Token

*有关 JWT  令牌的更多详细信息，请参阅*[*此处*](https://jwt.io/)*。*

JWT（或 JSON Web Token）是一种可以从您的payload生成的token，它提供了一种简单的方式来安全地在各方之间传输信息。

您可以使用 jwt 库 <https://jwt.io/libraries> 生成。然后，传递一个包含数据编码信息的header value，以及包含您的数据的payload。

Token header 应包含以下信息：

* alg：这是使用的signing algorithm。您向 Coda 发出的请求，请始终使用 **HS256**。
* typ：这是您要生成的token类型。您向 Coda 发出的请求，请始终使用“**JWT**”。

Token payload 应包含以下信息：

* partner\_id：这是 Coda 提供给您的合作伙伴 ID
* iat：token创建时间（UTC 时区）

请注意，生成的Token**有效期为 5 分钟。**

*注意：这是用于生成授权的Token header，而不是您向 Coda 发出请求的 header。请勿在向 Coda 发出的请求header中暴露 partnerId。*

## 示例

### Header: Algorithm and Secret

```javascript
{
   "alg":"HS256",
   "typ":"JWT",
}
```

### **JWT token: Payload: data**

```javascript
{
  "partner_id": "1234567890",
  "iat": 1512203223
}
```

Payload也用于生成 JWT tokens。

要生成 JWT，您可以首先对token header和payload进行编码，然后使用您的Client Secret生成signature并将它们组合起来：

```javascript
key = '*yourclientsecret*'

unsignedToken = *encodeBase64Url(header) + '.' + encodeBase64Url(payload)*

signature = *HMAC-SHA256(key, unsignedToken)*

JWT = *unsignedToken + ‘.’ + signature*
```


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