油漆间消防管系密性试验。
Painting RM. Fire fighting pipe to be done air-tightness test.
通过一个实例分析，显示了一次一密并不具有完善保密性。
An example is analyzed to show that one-time-pad is not perfectly secure.
并在随机谕示模型下，证明了方案具有选择密文安全性。
The scheme has adaptively chosen ciphertext security in the random oracle model.
密着性，耐热性极佳，良好的印刷特性。
Excellent in adhesion and heat resistance. Excellent in printing characteristic.
密着性，耐热性极佳，良好的印刷特性。
Excellent in adhesion and heat resistance. Excellent in printing characteristic.
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