SlackBuildsOrg/system/tomb

Tomb is an 100% free and open source system for file encryption on
GNU/Linux, facilitating the backup of secret files.

Optional deps:
- haveged: fast entropy generation for key forging
- unoconv: fast search of contents in PDF and DOC files
- qrencode: engrave keys into printable qrcode sheets
- steghide: bury and exhume keys inside images