Symmetric encryption for error correction

Deterministic secure quantum communication with and without entanglement

“…2. Alice generates a random key K and use it to encrypt C by a symmetric key algorithm [28] to obtain a new packet P. One possibility is to use an error correcting code such as [29] in order to overcome errors due to noisy channels or imperfect photon detectors. For optimal security, a one-time pad symmetric key whose length is at least as long as the message should be used.…”