## 签名验证工具
请求地址:`http://api.zhongwuyun.com`
~~~[api]
post:/sign
*string:deviceid#设备号
*string:devicesecret#设备秘钥
*string:printdata#打印内容
<<<
success
{
"errNum": 0,
"retMsg": "success",
}
<<<
error
{
"errNum": 2,
"retMsg": "验证签名失败",
}
~~~
>> 签名算法见目录
