Some ideas, depending on what you need (I can't say how good these are): http://www.keyczar.org http://www.keyczar.org http://nacl.cr.yp.to http://nacl.cr.yp.

Some ideas, depending on what you need (I can't say how good these are): http://www.keyczar.org http://www.keyczar.org http://nacl.cr.yp.to http://nacl.cr.yp.to https://github.com/jedisct1/libsodium https://github.com/jedisct1/libsodium http://www.gnupg.org http://www.gnupg.org