Cookie encryption/decryption using iRule

Hello,

 

 

I am trying to write a script that will encrypt/decrypt a cookie, but am having a little trouble with the syntax used in the BIG-IP. I need to check to make sure that a cookie is not decrypted before I decrypt it and am not sure of the "if" statement I can use. Here is the code I am using now:

 

 

when HTTP_REQUEST {

 

if{CHECK TO SEE IF ALREADY DECRYPTED, PLEASE HELP!!!} {

 

HTTP::cookie remove "MyCookie"

 

}

 

else {

 

HTTP::cookie decrypt "MyCookie" KeyValue

 

}

 

}

 

 

when HTTP_RESPONSE {

 

HTTP::cookie encrypt "MyCookie" KeyValue

 

}

 

 

I need to make sure that I do not decrypt an already decrypted cookie. Can anybody help me with the "if" statement that I need.

 

 

Thanks in Advance!

 

 

Jeya