The Design of Information Hiding and Recovering in Image Files
Abstract
With the rapid development of information technology, network technology and electronic commerce, network information security will endanger the society such as economic, political and cultural fields, and so on. With the rapid development of computer hardware, nowadays the computers with parallel computing ability can crack information more and more easily. It is not the only option which to increase the key length of encryption algorithm in order to enhance security. On information hiding, it is difficult for the potential monitor or illegally interceptor to judge whether the confidential information exists in the open information or not.
This paper combined cryptography and information hiding technology, meanwhile through the seeing redundancy of eyes of mankind to achieve the hiding and recovering of 24 bitmap image files. The system is based on Windows XP and developed through Visual C + +6.0 for development tool. The Experiments recommend that the least-significant-bit(LSB) algorithm, can achieved such a (40 × 40. 4.74KB) 24 bits hidden in bitmap 600 bytes of information, Moreover, the ability of hidden information is proportional to the size of picture. The tow sides of Communication who get the correct key can get the correct secret information from the Photo; otherwise, will be the piles of distortion.
So we can see that the combination of cryptography and information hiding makes the communication of information much more securely.
Key words: Information security; Encryption Algorithm; Information Hiding; Feeling redundancy; Least-significant-bit (LSB)
