baba-cdn-authenticode's Introduction

baba-cdn-authenticode

Authenticode generator to support URL authentication by Alibaba Cloud CDN

The URL authentication function protects user¡¯s site resources from illegal download and misuse. Leeching issues are only partially solved by adding the referer blacklist or whitelist. Because the referer content may be forged, this method cannot protect site resources completely. Applying URL authentication is recommended to protect the security of origin site resources.

MD5Generator follows the standard guide on the URL below https://www.alibabacloud.com/help/doc-detail/27135.htm

key = "aliyuncdnexp1234";	//	key defined from CDN console
uri = "/video/standard/1K.html";	//	URL to download

//// Sample for Type A
// with 1 day expiry
System.out.println(MD5Generator.getAuthStringA(uri, key));

//// Sample for Type B
uri = "/4/44/44c0909bcfc20a01afaf256ca99a8b8b.mp3";

//	with 1800 S of expiry from now
System.out.println(MD5Generator.getAuthStringB(uri, key));	

//	expiry at given time
System.out.println(MD5Generator.getAuthStringB(uri, "201508150800", key)); 

//// Sample for Type C
uri = "/test.flv";

//	with 1 day expiry from now, type C format 1
System.out.println(MD5Generator.getAuthStringC1(uri, key));	

//	expiry at given time in UNIX format, type C format 1
System.out.println(MD5Generator.getAuthStringC1(uri, "55CE8100", key));	

//	MD5 string to pass to the URL parameter for type C format 2
System.out.println(MD5Generator.getMDStringC(uri, "55CE8100", key));

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