Spam Weeding, Detection and Filtering on P2P System

Domain Keys Identified Mail (DKIM) defines a mechanism for using digital signatures on E-Mail at the domain level,allowing the receiving domain to confirm that E-Mail came from the domain it claims to. Erasure codes introduce pollution attack, an attack in which the adversary injects packets to disrupt the erasure decoding procedure and consequently denies the authentication service to the receiver. This paper modifies the DKIM by encrypting the content of the E-Mail and proposes a new lightweight, pollution-attack resistant multicast authentication scheme (PARM), which generates evidence that receivers can validate on a fast, per-packet basis.