Method for hiding mass information by using remote sensing image

Abstract

The invention relates to a method for hiding mass information by using a remote sensing image and belongs to the field of information hiding in pattern recognition and data encryption of information sciences. The method is characterized in that mass confidential files are stored in a remote sensing image file to have strong concealment; data is only stored in characteristic areas of the image file; and the hidden data is subjected to random encryption in advance and the encryption sites of an encrypted image still reserve the characteristics of an original image, so that the encrypted image has little appearance change to avoid being identified and decrypted and provide a security guarantee for the storage and transmission of private information. In addition, the invention also provides a method for extracting remote sensing image hidden information based on the method for hiding the mass information, which can effectively extract the hidden information and is simple and easy to implement.

Description

technical field [0001] The invention relates to a method for hiding and encrypting massive information using remote sensing images as a carrier, and belongs to the fields of information hiding in pattern recognition and data encryption in information science. Background technique [0002] Information hiding technology is an important direction in the field of information security in the digital information age. Information hiding technology uses the redundancy of carrier information to hide secret information in common carrier data (text, image, video, audio, etc.) The release of secret information through the release of data can avoid attracting the attention of others, so it has greater concealment and security, and it is very easy to escape the interceptor's cracking. [0003] In recent years, the rapid development of computer technology and network communication has made it easy for people to transmit data through computer storage media, the Internet and communication ne...

AI Technical Summary

Problems solved by technology

Taking an image file in 24-bit BMP format as an example, its data organization method is: fixed-length file, information structure, brightness value on 3 channels of each pixel (each pixel occupies 3 bytes), a 1200× The 24-bit true-color BMP image of 1500 is about 5.3MB. The last three bits of each byte are intercepted to store encrypted data. The encryption ratio is 37.5%. It can carry up to 2MB of information, which obviously cannot meet the needs of massive information hiding.

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