ColdFusion HMACMD5 function

Fri, 21 Nov 2008 00:26:00 -0500

Several months ago, we were integrating our LinkShare affiliate program with our ColdFusion based e-commerce system. During that process, while preparing an MD5 encrypted HMAC message signature for transmitting transaction data to our affiliate tracking account, we encountered a problem with the included encryption algorithms in CF8.

Even though the enterprise version of CF8 includes the hmacmd5 encryption library, we couldn't get it to work, so we reverted to a Java-based implementation wrapped in a function inside one of our Utils CFC's.

Here's how we did it

HMAC MD5 Encryption Function

Place this function inside a Utilities CFC or similar, or use as an UDF



		
        
		
		

		
		

		
		

		

		key = CreateObject("java","javax.crypto.spec.SecretKeySpec");
		key.init(myKeyByteArray,"HmacMD5");

		hmac = CreateObject("java","javax.crypto.Mac");
		hmac = hmac.getInstance("HmacMd5");
		hmac.init(key);

		hmac.update(myMessageByteArray);

		hmac = hmac.doFinal();

Linkshare Affiliate Program with ColdFusion

Thu, 20 Nov 2008 23:03:00 -0500

One of the latest problems we had to solve while working for our full color printing and direct mail marketing company, imageMEDIA, was integration of the LinkShare affiliate program with our custom built ColdFusion e-commerce site.

Here's how we quickly and dirtily solved it.

[More]

ShortFusion Blog - LinkShare

ColdFusion HMACMD5 function

HMAC MD5 Encryption Function

Linkshare Affiliate Program with ColdFusion