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Quantum Alice and Silent Bob: Qubit-based Quantum Key Recycling with almost no classical communication
quantum cryptography quantum key recycling
2019/8/2
We introduce a Quantum Key Recycling (QKR) protocol that needs no classical communication from Alice to Bob. Alice sends only a cipherstate, which consists of qubits that are individually measured by ...
Security proof for Quantum Key Recycling with noise
quantum cryptography quantum key recycling
2018/3/13
Quantum Key Recycling aims to re-use the keys employed in quantum encryption and quantum authentication schemes. We consider QKR protocols where classical information is embedded in qubit states. A pa...
Optimal attacks on qubit-based Quantum Key Recycling
quantum cryptography quantum key recycling
2017/4/19
Quantum Key Recycling (QKR) is a quantum-cryptographic primitive that allows one to re-use keys in an unconditionally secure way. By removing the need to repeatedly generate new keys it improves commu...
Quantum Key Recycling with eight-state encoding (The Quantum One Time Pad is more interesting than we thought)
quantum cryptography eight-state encoding
2016/12/7
Perfect encryption of quantum states using the Quantum One-Time Pad (QOTP) requires 2 classical key bits per qubit. Almost-perfect encryption, with information-theoretic security, requires only slight...