----------------------------------------------------举例 签到 接口开始---------------------------------------------------
第一步：-----请求报文明文:{"body":{},"head":{"ywId":"GY0001"}}

ODxdq2/WhHlCKoLIGNV2jX5RCvzK6g7Ac67zUcKCdmqE84usy7uY0k/zT0QwY9pYpzUjrampW0HX
SicFeLfXuqCn3EEbJc1v1NFuYgD1YTmiABO44CIdpXi8RMH7oCtqdANh9f9oapmNBnL6X3wCU/V4
3eOnMkKj9ufpejxmkes=----------------------------
第二步：-----请求报文密文:

ODxdq2/WhHlCKoLIGNV2jX5RCvzK6g7Ac67zUcKCdmqE84usy7uY0k/zT0QwY9pYpzUjrampW0HX
SicFeLfXuqCn3EEbJc1v1NFuYgD1YTmiABO44CIdpXi8RMH7oCtqdANh9f9oapmNBnL6X3wCU/V4
3eOnMkKj9ufpejxmkes=
第三步：-----请求报文签名:

正确格式的:{"APIKEY":"202011230920597dfbbb23-c62","ParamJson":"{\"appCode\":\"APP005\",\"requestData\":\"ODxdq2/WhHlCKoLIGNV2jX5RCvzK6g7Ac67zUcKCdmqE84usy7uY0k/zT0QwY9pYpzUjrampW0HX\r\nSicFeLfXuqCn3EEbJc1v1NFuYgD1YTmiABO44CIdpXi8RMH7oCtqdANh9f9oapmNBnL6X3wCU/V4\r\n3eOnMkKj9ufpejxmkes=\",\"sign\":\"\"}"}
第四步：-----请求报文:

{"appCode":"APP005","requestData":"ODxdq2/WhHlCKoLIGNV2jX5RCvzK6g7Ac67zUcKCdmqE84usy7uY0k/zT0QwY9pYpzUjrampW0HX
SicFeLfXuqCn3EEbJc1v1NFuYgD1YTmiABO44CIdpXi8RMH7oCtqdANh9f9oapmNBnL6X3wCU/V4
3eOnMkKj9ufpejxmkes=","sign":""}
A35MH9gv+MrdNrwj/bEpE0BLnds6aNCrxU44t0CsQS7uOdXXkQ273C15tYCcCLwULvqugXXgN+ig
nZq5ihMyJZec3TpGAsXaOuYrzHFBuI5zXxlJFXYmGE0CslV0MrCGqgZJc3CStf0S/XvU94FIxk3l
DV4gSPa0aTKGZNb/R2k=

第五步：验签成功！
第六步：--------------------------解密--------------------------
解密后的响应报文:{"body":{"pubKey":"ab95f1c8024546809f89ad07e2e8bf91"},"head":{"code":"000","message":"调用成功","ywId":"GY0001"}}
第七步：--------------------------得到会话公钥--------------------------
会话公钥:ab95f1c8024546809f89ad07e2e8bf91