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为了实现保密传真机保密通信的目的,需要对图文信息数据源运用一个合适的加解密算法进行加解密。要求选取的算法时间复杂度和空间复杂度不能太大,故Blowfish算法是较好的选择。运用Blowfish算法在传真发送端/接收端对图像文件进行加/解密,实现保密通信的功能。算法经过分析、实现、验证、测试,成功运用于保密传真机的保密通信。
In order to achieve the purpose of secure communication of confidential fax machines, an appropriate encryption and decryption algorithm needs to be used for encrypting and decrypting graphic and textual information data sources. The time complexity and space complexity of the algorithm required to be chosen can not be too large, so the Blowfish algorithm is a better choice. Blowfish algorithm is used to encrypt / decrypt image files at the sending / receiving end of the fax to realize the function of confidential communication. The algorithm is analyzed, realized, validated, tested and successfully applied in secure communications of secure fax machines.