Encryption Upload Download exchange system
This application is:- Upload encryption context with maximum living duration and download times.
- Before living download encryption context with password to decrypt and consume download times.
- Erase upload encryption context after living duration or no left download times.
- Exchange public key in file field and auto PBKDF2 encryption with master key save in LocalStorage.
- Better persistent encryption usage: phase 0, PBKDF2 exchange phase 1 X25519 public. Phase 1, X25519 exchange phase 2 X25519 public. Phase 2, exchange main massage in long term and more times.
- Or once encryption usage: main massage storage in file.