成都微信网站建设推,怎么注册网站网址,网站前置审批文件,wordpress主页广告LabVIEW网络服务安全2在客户端应用程序中创建签名对请求进行签名要求您具有能够从客户端的编程语言调用的MD5摘要算法以及SHA256加密摘要算法的实现。这两种算法通常都可用于大多数平台。还需要#xff1a;1. 要使用的HTTP方法的字符串#xff08;“GET”、“POST”、“PUT”…LabVIEW网络服务安全2在客户端应用程序中创建签名对请求进行签名要求您具有能够从客户端的编程语言调用的MD5摘要算法以及SHA256加密摘要算法的实现。这两种算法通常都可用于大多数平台。还需要1. 要使用的HTTP方法的字符串“GET”、“POST”、“PUT”、“DELETE”2. 目标IP地址或DNS主机名3. 在该地址请求的网址4. HTTP内容正文可能出现在“PUT”或“POST”请求中5. 当前时(in UTCtime using format ‘YYYY-MM-DD HH:MM:SSZ’)6. 安全密钥的两个元素访问ID和密钥ID例如给定以下HTTP请求Method GETTime 2008-07-23 22:41:02ZURL /quotes/NATI1. 客户端创建许多单独的字符串元素这些元素将连接在一起。这些元素是要使用的HTTP方法的字符串“GET”、“POST”、“PUT”、“DELETE”“GET”2. URL请求/quotes/NATI3. 当前时间以UTC时间使用格式“YYYY-MM-DDHHMMSSZ”2008-07-23224102Z4. The Access ID portion of the Security Key1. PqVr/ifkAQhlVrdPIykXlFvg12GhhQFR8H9cUhphgg the default Access ID的机密The clientcreates a number of individual string elements that will get concatenatedtogether. These elements are:The string for the HTTP method to be used (‘GET’, ‘POST’, ‘PUT’, ‘DELETE’)‘GET’2. The URL requested/quotes/NATI3. The current time of day (in UTC time using format‘YYYY-MM-DD HH:MM:SSZ’)‘2008-07-23 22:41:02Z’4. The Access ID portion of the Security KeyPqVr/ifkAQhlVrdPIykXlFvg12GhhQFR8H9cUhphgg ß the defaultAccess ID5. The hex-encoded MD5 digest of the Secret ID portion ofthe Security KeyGiven: pTe9HRlQuMfJxAG6QCGq7UvoUpJzAzWGKy5SbZroSU ß the defaultSecret ID‘4ce83e7d608f70375fd1cda0a6f3ae66’ ß the hex-encodedMD5 digest of the Secret ID string6. The hex-encoded MD5 digest of the content-body if thereis a content-body for the request (Not applicable for this request becausethere is no content-body for a GET request).Appendedtogether, these give us a string of:‘GET/quotes/NATI2008-07-2322:41:02ZPqVr/ifkAQhlVrdPIykXlFvg12GhhQFR8H9cUhphgg4ce83e7d608f70375fd1cda0a6f3ae66’为了形成最终签名我们一起附加1. ‘NIWS’ (for requests with no content-body, or forrequests in which we do not want to include the content-body as part of thesignature) or ‘NIWS2’ (for requests with a content body).2. A blank space (0x20).3. The Access ID4. A colon (0x3a)5. The Base64-encoded SHA256 digest, as calculated above.Thisgives us the signature string:‘PqVr/ifkAQhlVrdPIykXlFvg12GhhQFR8H9cUhphgg:xTDFuYyLJpwOLL2bKKlAco59W/0N53BnVwOGNZ0fXl0’Thissignature string is added to the HTTP request as a header named:“x-ni-authentication”.Thetimestamp string used to create this signature is also attached to thesignature as a header named “x-ni-date”.So acomplete signed HTTP request (with ‘\n’ shown to represent the requiredcarriage returns) would look like:GET/quotes/NATI HTTP/1.1 ‘\n’x-ni-date:2008-07-23 22:41:02Z ‘\n’x-ni-authentication:NIWSPqVr/ifkAQhlVrdPIykXlFvg12GhhQFR8H9cUhphgg:xTDFuYyLJpwOLL2bKKlAco59W/0N53BnVwOGNZ0fXl0‘\n’Thissignature, embedded as HTTP headers, is only for this request. It could onlyhave beencreatedby someone who knew the algorithm and both parts of the Security Key. Plus, thesignature includes an encoded version of the timestamp, so the signature has abuilt-in expiration time, as configured on the LabVIEW target. Outside of thattime window, this signature is automatically invalid, preventing later replaysof the request.Note thatthe timestamp calculations require that the clock be properly set on both theclient and the LabVIEW target. Because the timestamp string is written in UTCtime, the client and servers can each be in different time zones, as long astheir local clocks and time zones are correctly set.需要说明的是上述的例程和文档都是可以下载的双击即可打开其中压缩文件是可以采用粘贴复制的方式拷贝到硬盘上。这不是图片各位小伙伴看到后尝试一下这个问题就不用加微信咨询了。有关LabVIEW编程、LabVIEW开发等相关项目可联系们。附件中的资料这里无法上传可去公司网站搜索下载。
