Experimental investigation of security parameters of Y-00 quantum stream cipher transceiver with randomization technique: part I
Experimental investigation of security parameters of Y-00 quantum stream cipher transceiver with randomization technique: part I
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DOI：
10.1117/12.2273462
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发表时间：
2017-08
期刊：
影响因子：
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通讯作者：
F. Futami;K. Tanizawa;Kentaro Kato;O. Hirota
中科院分区：
文献类型：
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作者：
F. Futami;K. Tanizawa;Kentaro Kato;O. Hirota
即使当明文的比特序列是非均匀序列时，作为Y-00量子流密码收发机的密文的光信号的功率分布也应该是均匀的。为了检验均匀性，我们在实验上测量了4096个光强级别的光信号的功率，并计算了信号数目与平均功率的比率。各种比特序列的比特比为0.5，测量误差为1%，这是功率分布均匀的证据。此外，还通过实验观察了重叠选择密钥随机化技术对增强对已知明文攻击的安全性的有效性。
A power distribution of optical signals as the ciphertext of Y-00 quantum stream cipher transceivers should be uniform, even when the bit sequence of plaintext is a non-uniform sequence. For examining the uniformity, we experimentally measure powers of optical signals with 4096 intensity levels and calculate the ratio of signal numbers over and under the average power. The ratios for various kinds of bit sequences are 0.5 with measurement error of 1%, which is an evidence of the uniformity of the power distribution. In addition, the effectiveness of a randomization technique of overlapping selection keying for enhancing the security against the known plaintext attack is experimentally observed.