Key Generation: Foundations and a New Quantum Approach
arXiv:0906.5241 · doi:10.1109/JSTQE.2009.2025698
Abstract
The fundamental security and efficiency considerations for fresh key generation will be described. It is shown that the attacker's optimal probability of finding the generated key is an indispensable measure of security and that this probability limits the possibility of privacy amplification and the amount of fresh key that can be generated. A new approach to quantum cryptography to be called KCQ, keyed communication in quantum noise, is developed on the basis of quantum detection and communication theory for classical information transmission. KCQ key generation schemes with coherent states of considerable energy will be described. The possibility of fresh key generation is demonstrated for binary and N-ary detection systems under heterodyne attacks. The security issues of these schemes will be discussed and compared with BB84. The emphasis throughout is on concrete finite bit-length protocols.
To appear in the IEEE Journal of Selected Topics in Quantum Electronics
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- Critical analysis of the Bennett-Riedel attack on secure cryptographic key distributions via the Kirchhoff-law-Johnson-noise scheme
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- Current and voltage based bit errors and their combined mitigation for the Kirchhoff-law-Johnson-noise secure key exchange
- Realizable receivers for discriminating arbitrary coherent-state waveforms and multi-copy quantum states near the quantum limit
- Random-resistor-random-temperature Kirchhoff-law-Johnson-noise (RRRT-KLJN) key exchange
- Fundamental Quantitative Security In Quantum Key Distribution
- Cable Capacitance Attack against the KLJN Secure Key Exchange
- Guessing probability under unlimited known-plaintext attack on secret keys for Y00 quantum stream cipher by quantum multiple hypotheses testing
- Multi-user quantum key distribution with collective eavesdropping detection over collective-noise channels
- Multi-Photon Quantum Key Distribution Based on Double-Lock Encryption
- Can Quantum Key Distribution Be Secure
- Quantum-accelerated algorithms for generating random primitive polynomials over finite fields
- Universal Optimal Estimation of the Polarization of Light with Arbitrary Photon Statistics
- Application of quantum Pinsker inequality to quantum communications
- Analysis of Y00 Protocol under Quantum Generalization of a Fast Correlation Attack: Toward Information-Theoretic Security
- Potentially Information-theoretic Secure Y00 Quantum Stream Cipher with Limited Key Lengths beyond One-Time Pad