libgringotts2 binary package in Ubuntu Bionic arm64

 A small, easy-to-use, thread-safe C library originally developed
 for Gringotts; its purpose is to encapsulate data (generic: ASCII
 but also binary data) in an encrypted and compressed file. It
 uses strong encryption algorithms, to ensure the data is as safe as
 possible, and allows the user to have the complete control over all
 the algorithms used in the process.
 .
 For encryptions, libgringotts makes use of the MCrypt and MHash
 C libraries by Nikos Mavroyanopoulos.

Source package