<!---
	Try to decrypt and check the anti-spam keys. It is important
	to put CFTry / CFCatch around any and all decryption actions
	since the Decrypt() method will throw an error if no string
	(empty string) is passed to it. Seeing as we can esnure the
	integrity of our data, this is a possibility.
--->
<cftry>
 
	<!---
		Decript the spam key using our global encryption key.
		This will give us back our randomly generated key.
	--->
	<cfset REQUEST.SpamKey = Decrypt(
		FORM.spam_key3,
		"nutz_4_butts",
		"CFMX_COMPAT",
		"HEX"
		) />
 
	<!---
		Decrypt the cut off date using the spam key we just
		decrypted. This will give us back our time this form can
		be active.
	--->
	<cfset REQUEST.CutOffDate = Decrypt(
		FORM.spam_key1,
		REQUEST.SpamKey,
		"CFMX_COMPAT",
		"HEX"
		) />
 
	<!---
		Decrypt the required cut off date using the spam key.
		This will give us the time for which the form MUST be
		active (otherwise, submission occurred to fast).
	--->
	<cfset REQUEST.RequiredCutOffDate = Decrypt(
		FORM.spam_key2,
		REQUEST.SpamKey,
		"CFMX_COMPAT",
		"HEX"
		) />
 
 
	<!---
		Check to see if our anti-spam time contraints have been
		violated. For starters, we must check to see if the
		decrypted time stamps are even valid numeric dates. If
		they are, then check to see if "Now" falls between the
		required live time and active cut-off time.
	--->
	<cfif (
		(NOT IsNumericDate( REQUEST.CutOffDate )) OR
		(NOT IsNumericDate( REQUEST.RequiredCutOffDate )) OR
		(REQUEST.CutOffDate LT REQUEST.Environment.DateTime.Now) OR
		(REQUEST.RequiredCutOffDate GT REQUEST.Environment.DateTime.Now)
		)>
 
		<!--- This cut off date is not valid. --->
		<cfset REQUEST.FormErrors.Add(
			"There was a problem submitting the form, please try again"
			) />
 
		<!---
			Add an additional check to see if the form was
			submitted to fast. If it was, give the user some
			feedback as to why the form submission did
			not work.
		--->
		<cfif (REQUEST.RequiredCutOffDate GT REQUEST.Environment.DateTime.Now)>
			<cfset REQUEST.FormErrors.Add(
				"The form must be active for 10 seconds before it can be submitted"
				) />
		</cfif>
	</cfif>
 
	<!--- Catch any errors that occur. --->
	<cfcatch>
 
		<!---
			Something went wrong. Either there was an error in
			the code, or the data was invalid. Either way, the
			anti-spamming failed.
		--->
		<cfset REQUEST.FormErrors.Add(
			"There was a problem submitting the form, please try again"
			) />
 
	</cfcatch>
</cftry>