The quantum cryptography communication is the combination of classical cryptography theory and quantum mechanics.

量子密码通信是经典密码学与量子力学相结合的新兴交叉学科。

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Quantum cryptograph has extraordinary adaptability to the optical communication and unconditional security which classical cryptography has been striving for.

量子密钥分配特别适合光通信环境，而且可以实现无条件安全性。

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RSA, as a classical public key cryptosystem and a very important part of the cryptography, is the keystone and difficulty of the cryptography teaching.

RSA是经典的公钥密码体制，是密码学中非常重要的一部分内容，是教学的重点和难点。

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In addition, the quantum cryptography can protect the information in a new way that cannot be eavesdropped by means of classical attack.

另外，量子保密可以新的方法保护信息，从而避免经典攻击下的信息窃取。

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In addition, the quantum cryptography can protect the information in a new way that cannot be eavesdropped by means of classical attack.

另外，量子保密可以新的方法保护信息，从而避免经典攻击下的信息窃取。

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