evelopen

Wrap an arbitrary file in an envelope with time stamp and checksum. 

The name is an anagram of “envelope”. The header includes a field of pseudo
random data to attempt making all envelope instances unique, including when
generating an envelope for identical data within the same second.

Licence

Copyright 2020 Steinar Knutsen

Licensed under the EUPL, Version 1.2 or – as soon they will be approved by the
European Commission – subsequent versions of the EUPL (the “Licence”); You may
not use this work except in compliance with the Licence. You may obtain a copy
of the Licence at:

https://joinup.ec.europa.eu/collection/eupl/eupl-text-eupl-12

Unless required by applicable law or agreed to in writing, software distributed
under the Licence is distributed on an “AS IS” basis, WITHOUT WARRANTIES OR
CONDITIONS OF ANY KIND, either express or implied. See the Licence for the
specific language governing permissions and limitations under the Licence.