https://developers.weixin.qq.com/miniprogram/dev/framework/open-ability/user-encryptkey.html
curl -X POST "https://api.weixin.qq.com/wxa/business/getuserencryptkey?access_token=ACCESS_TOKEN&openid=OPENID&signature=SIGNATURE&sig_method=hmac_sha256"
相关问题
通过hmac_sha256签名生成的：
hmac_sha256(session_key, "")
没人用过这个功能么？