apt-transport-https 0.8.16~exp12ubuntu10.5 (i386 binary) in ubuntu precise

 This package enables the usage of 'deb https://foo distro main' lines
 in the /etc/apt/sources.list so that all package managers using the
 libapt-pkg library can access metadata and packages available in sources
 accessible over https (Hypertext Transfer Protocol Secure).
 .
 This transport supports server as well as client authentication
 with certificates.