摘要
数据加密是保护数据安全的一种有效的方法,它是将一段明文按某种算法进行处理,使其成为密文,以保护数据不被非法人窃取、阅读。数据加密技术常分为"对称式"加密与"非对称式"加密两类。多步加密算法属对称式加密,由于安全性高得到广泛应用。
Data encryption is an effective way to protect data security. It treats a paragraph in some calculating method and to change the paragraph into a cipher text to prevent data from stealing and reading by unauthorized people. Data encryption could be divided into ＂symmetric＂ encryption and ＂ asymmetric＂ encryption. Multi-step belongs to the symmetric encryption and is widely used because of its high security.
出处
《价值工程》
2010年第18期185-185,共1页
Value Engineering
关键词
多步数据加密
密钥
伪随机序列
multi-step data encryption
encryption key
pseudo-random sequence
