PEFS

PEFS (Private Encrypted File System) is a kernel level stacked cryptographic filesystem for FreeBSD.

The following is a list of its most important features:

• Kernel level file system, no user level daemons needed. Transparently runs on top of existing file systems.

• Random per file tweak value used for encryption, which guaranties different cipher texts for the same encrypted files.

• Saves metadata only in encrypted file name, but not in file itself.

• Supports arbitrary number of keys per file system, default directory key, mixing files encrypted with different keys in same directory.

• Allows defining key chains, can be used to add/delete several keys by specifying only master key.

• Uses modern cryptographic algorithms: AES and Camellia in XTS mode, PKCS#5v2 and HKDF for key generation.