4 ms·
We did/do have that kind of lock: A safe deposit box at a bank. To open it, you need two keys, one of which you have and one of which the bank has.
by SoftTalker 15d ago
We did/do have that kind of lock: A safe deposit box at a bank. To open it, you need two keys, one of which you have and one of which the bank has.
- TeMPOraL 15d agoBut that's the "you need two keys at the same time" case, which is different. I'm talking about "each of them can lock alone, but once locked, only the other one can unlock". The real problem is that lock and key is a fundamentally dumb analogy for a process that scrambles something.