Source: cirosantilli/pre-shared-key
= Pre-shared key
{wiki}
An overview of what you can do with a pre-shared key with tradeoffs can be found at: https://quantumcomputing.stackexchange.com/questions/142/advantage-of-quantum-key-distribution-over-post-quantum-cryptography/25727#25727 The options are:
* <one-time pad>
* <symmetric encryption>
* authentication with some <message authentication code> protocol