"'Our group removed half of the OpenSSL source tree in a week. It was discarded leftovers,' de Raadt told Ars in an e-mail. […] De Raadt told ZDNet that his team has removed 90,000 lines of C code. 'Even after all those changes, the codebase is still API compatible,' he said. 'Our entire ports tree (8,700 applications) continue to compile and work after all these changes.' The OpenBSD team started working on LibreSSL about a week ago, he told Ars."