Encryption and NIST SP800-131A compliance

Encryption uses NIST-compliant mechanisms.

The mechanisms that are used by file encryption, including ciphers and key lengths, are compliant with the NIST SP800-131A recommendations. See NIST Special Publication 800-131A, Revision 1 at http://nvlpubs.nist.gov/nistpubs/SpecialPublications/NIST.SP.800-131Ar1.pdf.