CAJ | 학술논문

现有的密钥加密方法无法保证密钥分发的安全性。针对上述问题，提出了一种基于信道相位响应独立性的衰落信道加密方法。通过将发送方和窃听方之间的信道化为两个信道的级联计算得出密钥各态历经的安全容量，在此基础上，对离散PSK信源加密的参数进行了讨论，最终实现信息的加密。仿真结果表明，当合法接收方的接收信号相位估计误差为0．001时，误码率会迅速上升为0．5。
현유적밀약가밀방법무법보증밀약분발적안전성。침대상술문제，제출료일충기우신도상위향응독립성적쇠락신도가밀방법。통과장발송방화절은방지간적신도화위량개신도적급련계산득출밀약각태력경적안전용량，재차기출상，대리산PSK신원가밀적삼수진행료토론，최종실현신식적가밀。방진결과표명，당합법접수방적접수신호상위고계오차위0．001시，오마솔회신속상승위0．5。
The key encryption methods can’t guarantee the key distribution security.To overcome the above limitations,this paper proposed an encryption scheme over fading channels based on independency of channel phase response.Firstly,the pa-per divided the channel between the sender and the eavesdropper into the cascade of the two channeld,and calculated the key security capacity.Secondly,the paper discussed the discrete source PSK encryption parameters.Finally,the legitimate users could guarantee the system security.Simulation results show that,the error rate is rapidly increased to 0.5 with the estimation error of the received signal phase is 0.001 .