This project forked from meiqia/meiqiasdk-push-signature-example
美洽 SDK 3.0 推送的数据结构签名算法，多语言示例。
License: MIT License
美洽 SDK 3.0 推送的数据结构签名算法，多语言示例。
该项目是 美洽 SDK 3.0 推送的数据结构签名的算法，具体推送的数据结构请移步 美洽 SDK 推送说明。
开发者收到美洽的推送数据后，开发者可以选择进行 签名验证。
我们使用的签名算法是 HMAC-SHA1，key 使用的是美洽 App 的 Secret-Key，请到工作台获取你的 Secret-Key。Warning，请不要将 Secret-Key 暴露给任何人。
下图是获取 Secret-Key 截图：
开发者收到美洽的推送数据请求后，请获取头信息的 Authorization，其中是美洽推送数据的签名。
我们提供 Java、Python、Ruby、JavaScript、PHP 五种语言的计算签名的代码，计算签名后，请和头信息的美洽数据签名进行比对，如果比对失败，则说明推送数据被修改过。
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