online one-time pad

https://acornmetric.com/s/4Bbk6zT3qakDeZ8vo-Q-q

The online one-time pad is a cryptographic method where a secret key, as long as the message, is generated and shared between parties. Each key is used only once, ensuring perfect secrecy if the key is truly random and never reused, but it's impractical for most everyday use due to key management challenges.