I noticed that #RetroShare uses #PGP for encryption.
All cryptographers and vulnerability researchers I know of recommend against using PGP at present.
Few samples of expert opinions on PGP:
1. Matthew Green
https://blog.cryptographyengineering.com/2014/08/13/whats-matter-with-pgp/
2. Moxie Marlinspike
https://moxie.org/2015/02/24/gpg-and-me.html
3. Filippo Valsorda
https://words.filippo.io/giving-up-on-long-term-pgp/
4. Thomas Ptacek
https://www.latacora.com/blog/2019/07/16/the-pgp-problem/
(This post also recommends Magic Wormhole)
Not suggesting you give up on RetroShare, just keep this in mind.