Semantic Security for Quantum Wiretap Channels2022
Konferenz / Medium
Research Hub A: Kryptographie der Zukunft
Research Hub B: Eingebettete Sicherheit
RC 2: Quantum-Resistant Cryptography
RC 5: Physical-Layer Security
We consider the problem of semantic security via classical-quantum and quantum wiretap channels and use explicit constructions to transform a non-secure code into a semantically secure code, achieving capacity by means of biregular irreducible functions. Explicit parameters in finite regimes can be extracted from theorems. We also generalize the semantic security capacity theorem, which shows that a strongly secure code guarantees a semantically secure code with the same secrecy rate, to any quantum channel, including the infinite-dimensional and non-Gaussian ones.