QUANTIZATION NOISE IN STATISTICAL KEY EXCHANGE

摘要

Ideally, signals in statistical key exchange should be band-limited to prevent leak. Duringndigitization, however, the broadband quantization noise gets incorporated. In thisnstudy, the security risk posed by the quantization noise is analyzed. The Savitzky–Golaynfiltering technique is used to reduce the quantization noise. Although the noise can benreduced, it cannot be eliminated. Legitimate users must take evasive measures. Thenadversary can perform exhaustive search. Once how signals are processed is identified,nthe security can be breached.