4 ms·

But then if just one of your friend's private key is stolen, you lose control of everything you wrote, past or present.

• wizzwizz4 7y ago
  Well, yeah. That's what sharing the things you've written with them is.
  • topmonk 7y ago
    Well, there are algorithms that support perfect forward security.... but nah
    • wizzwizz4 7y ago
      This is a good argument for not rolling your own.