The 11th Information Security Conference (ISC 2008) was held in Taipei, T- wan, September 15 18,2008. ISC is an annual international conference covering researchintheoryandapplicationsofinformationsecurity.Itwas?rstinitiatedas a workshop(ISW) in Japan in 1997.This was followed by ISW 1999 in Malaysia and ISW 2000 in Australia. ISW became ISC when it was held in Spain in 2001 (ISC2001).ThelatestconferenceswereheldinBrazil(ISC2002), UK(ISC2003), USA(ISC2004), Singapore(ISC2005), Greece(ISC2006), andChile(ISC2007). ThisyeartheeventwassponsoredbytheChineseCryptologyandInformation- curity...