Due to realizing in double-real precision, the algorithms are provided with big secret key space .
而采用双精度实数作为系统初值密钥，其提供的密钥空间巨大。
We show that sender, receiver and arbitrator must have the size of the secret key space under the security level.
讨论了系统在某一安全水平下，各参与方应掌握的密钥量的大小，以及收发双方密钥之间的大小。
The advantages of this algorithm were, rapidity of encryption, carried out easily by computer, ampliative secret key space and so on.
该算法有加密速度快、易于计算机实现、密钥空间大等优点。
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