Logarithmic Octal Approximation Keying Scheme for Securing AS-PATH in Inter-Domain Routing
Border Gateway Protocol acts as the standard de-facto routing protocol that helps in routing between autonomous Systems. BGP propagates the routing information for an IP prefix by hearing an advertisement from one of its neighbor. Each BGP speaker advertises the AS-PATH through UPDATE messages for an IP prefix. The receiving BGP speakers of the neighboring AS append their own AS Number (ASN) in the existing ASPATH and advertise them. But BGP does not guarantee that the received AS-PATH has been modified or not. Thus AS-PATH falsification is not detected by BGP. Many researchers suggested many security proposals but none of them was deployed, due to various reasons except s-BGP. Many of the proposals follow Public Key Infrastructure (PKI) technology.