摘要
现行的网络安全传输方案中经典的方法分为对称加密和非对称加密2种。对称加密运算速度快但容易被攻击和破解;非对称加密算法复杂,不易被破解,但加密速度慢,不适宜传输大量的安全数据。通过对哈夫曼压缩方法研究可知,不同的数据文件经过哈夫曼压缩后可形成不同的少量数据的哈夫曼压缩编码表和压缩文件。通过对哈夫曼编码表进行非对称加密设计的方案,可以减少非对称加密算法加密的字节数,实现大数据量文件的非对称加密。同时通过对大数据文件的压缩,可以减少整个文件大小,提高网络传输效率。该方案已在多个网络安全传输项目中得到应用,完全能够满足网络传输安全要求。
The current classical methods of safe data transmission in the network are symmetrical encryption and asymmetrical encryption. Symmetrical encryption has the advantage of fast data processing but it is easy to be attacked and decryp- ted. Asymmetrical eneryption is not easy to be attacked but it has slowly data processing. It is unsuitable for processing large data file. When Huffman code is used to compress data file, a small size Huffman table and a compressed data file can be obtained. Using the way of encrypting Huffman table by asymmetrical encryption is a suitable method for transporting large data file on network safely. This method has been applied in some projects. It can meet the requirement of safe data transmission.
出处
《现代电子技术》
2010年第20期107-109,113,共4页
Modern Electronics Technique
关键词
对称加密
非对称加密
哈夫曼编码
RSA
symmetrical encryption
asymmetrical encryption
Huffman code
RSA
