- Added support for aes256, twofish256 and sha1-96
- Fixed some debugging statements
--HG--
extra : convert_revision : 598835dadaddb1e95d4ac99f8a1be4ba51639000
- buf_burn the unencrypted read/write payload buffers after use to avoid
sensitive contents sitting in memory for too long
--HG--
extra : convert_revision : 19227d63bda554e819ae7df919bfd18911d5b4a0