Function to create HMAC-SHA1 encrypted string

<cffunction name="hmacEncrypt" returntype="binary" access="public" output="false">    
<cfargument name="signKey" type="string" required="true" />
<cfargument name="signMessage" type="string" required="true" />
<cfset var jMsg = JavaCast("string",arguments.signMessage).getBytes("ASCII") />
<cfset var jKey = JavaCast("string",arguments.signKey).getBytes("ASCII") />
<cfset var key = createObject("java","javax.crypto.spec.SecretKeySpec") />
<cfset var mac = createObject("java","javax.crypto.Mac") />
<cfset key = key.init(jKey,"HmacSHA1") />
<cfset mac = mac.getInstance(key.getAlgorithm()) />
<cfset mac.init(key) /> 
<cfset mac.update(jMsg) />
<cfreturn mac.doFinal() />
</cffunction>