A Quantum-Classical Scheme towards Quantum Functional Encryption
arXiv:1703.00207
Abstract
Quantum encryption is a well studied problem for both classical and quantum information. However, little is known about quantum encryption schemes which enable the user, under different keys, to learn different functions of the plaintext, given the ciphertext. In this paper, we give a novel one-bit secret-key quantum encryption scheme, a classical extension of which allows different key holders to learn different length subsequences of the plaintext from the ciphertext. We prove our quantum-classical scheme secure under the notions of quantum semantic security, quantum entropic indistinguishability, and recent security definitions from the field of functional encryption.
arXiv comment13 pages
References in corpus (6)
- Symmetric quantum fully homomorphic encryption with perfect security
- Quantum key distribution via quantum encryption
- Symmetries and security of a quantum-public-key encryption based on single-qubit rotations
- Quantum Public-Key Encryption with Information Theoretic Security
- On the Power of Quantum Encryption Keys
- Quantum public-key algorithms to encrypt and authenticate quantum messages with information-theoretic security