Efficient, encrypted backup to local or remote hosts
Duplicity backs directories by producing encrypted tar-format volumes and uploading
them to a remote or local file server. Because duplicity uses librsync, the incremental
archives are space efficient and only record the parts of files that have changed since
the last backup. Because duplicity uses GnuPG to encrypt and/or sign these archives,
they will be safe from spying and/or modification by the server.