小程序的授权信息:
https://developers.weixin.qq.com/miniprogram/dev/framework/open-ability/authorize.html

小程序的系统参数和进入场景参数等:
https://developers.weixin.qq.com/miniprogram/dev/api/app/wx.getLaunchOptionsSync.html?search-key=%E8%BF%9B%E5%85%A5%E5%9C%BA%E6%99%AF

小程序转发是和进入场景参数获取:
https://developers.weixin.qq.com/miniprogram/dev/framework/open-ability/share.html#获取更多转发信息
https://developers.weixin.qq.com/miniprogram/dev/api/wx.getShareInfo.html

小程序的加密解密处理:已经session_key过期的处理
https://developers.weixin.qq.com/miniprogram/dev/framework/open-ability/signature.html