中文说明：在这个时代的普遍的电子连接，是没有时间，安全并不重要。有的数字图像通过网络的传输使用的增加，需要更安全的系统。本文的主要目的是安全的要实现两个主要原则即真实性和保密性，特别是安全的对于图像通过网络传输。真实性保证只有预期的接收方是能够收到消息和机密性保证消息是机密。为了实现这两项原则，有很多机制可用。如实现真实性的最常见做法是访问控制等，并为实现保密性的密码，有大量的对称和非对称加密方法可用。
English Description：
In this age of universal electronic connectivity, there is no time at which security does not matter. With the increase in usage of transmission of digital images over the network, there is need of more secure systems. The main aim of this paper is to achieve two main principles of security i.e. authenticity and confidentiality, particularly for transmission of images over a network. Authenticity ensures that only the intended receiver is able to receive the message and confidentiality ensures that the message is confidential. For achieving these two principles, there are lots of mechanisms available. e.g. the most common practices for achieving authenticity are passwords, access control etc. and for achieving confidentiality, there are lots of symmetric and asymmetric encryption methods available.