[Quickfix-developers] How can quickfix handle field encryption

[Quek T. W. <qt...@ya...>]

I have a fix counterparty on Fix4.4 that uses field encryption (triple-des).  Their requirements are :

    -  All fix header fields which can be encrypted such as MsgSeqNum, SendingTime are always encrypted 
       and placed in the SecureData field.  (Note: these fields are not in the clear at all )

    -  All other fields in message body are to be encrypted and placed in SecureData field and do not appear in the clear.
       
     - As a result of this, fix message types such as NewOrderSingle, ExecutionReport does not have any message
       body at all ( just the message header and trailer ).

Example fix messages (NewOrderSingle, ExectionReport ) are shown here : 

8=FIX.4.4^9=0219^35=D^49=ECOS1^56=018001^90=184^91=[This contains encryptable fix fields from header/body]^10=063^
8=FIX.4.4^9=0283^35=8^49=018001^56=ECOS1^90=248^91=^[This contains encryptable fix fields from header/body]^10=116^


I understand that QuickFix does not have any built-in support for encryption.  That is ok as i am able
to use OpenSSl tripledes in my fix application.  

Appreciate your advice if Quickfix can handle the above requirements that i have described.
The questions that i have are  : 

 1)  can QuickFix do the following :

      a) Send outgoing messages without compulsory fields appearing in the clear ?
         
        example : Sending NewOrderSingle without the MsgSeqNum, ClOrdID fields in the clear

      b) Received incoming messages (ExecutionReport) with mandatory fields (MsgSeqNum, ClOrdID) not in the clear ?
         Will Quickfix messages reject messages without the MsgSeqNum in the clear ?



thanks in advance,

 Tai Wee




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