Inject payload with crypto algorithms

[Mamatha <mamathaece () gmail com>]

Hi,

       I am implementing one application using libpcap but I am unble to
use pcap_inject is failing it showing undefined reference to this
function...I searched header file also The function is not avalible..

   My requirement:
                        case1:
                               I have to recevie the packets from 3000 port
of one internal device (interface).I have to apply encryption
                               and send back (inject payload)to same port
again of interface
                         case 2:I have to get the 3001 port for decryption
again I want send back to same using libcap functions
 doubt: If receive the packet payload its in (decrypted format)in original
data but I want to apply double encryption for packets encrypted data..how
should I get the encrypted data..

         I would like ask you send any sample code using any crypto
algorithms and libcap.
 It might be help ful for my application..

Thanks &regards
Mamatha
mamathaece () gmail com
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