Reversible information hiding method for encrypted image based on elastic selection and run length coding
A technology for encrypting images and information hiding, which is applied in the field of reversible information hiding of encrypted images, and can solve problems such as undetectable image changes.
Pending Publication Date: 2021-09-10
绍兴聚量数据技术有限公司
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Problems solved by technology
The information hiding technology based on digital image hides information into the image carrier by slightly modifying the pixel value of the original image, and the unauthorized third party cannot detect the image change
Method used
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[0056] In order to facilitate those of ordinary skill in the art to understand and implement the present invention, the present invention will be described in further detail below with reference to the accompanying drawings. It should be understood that the embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.
[0057] Below in conjunction with accompanying drawing, specific embodiment of the present invention is described in further detail:
[0058] In a preferred embodiment of the present invention, a method for reversible information hiding of encrypted images with elastic selection and run-length coding is provided, which is used for secret communication between the image owner, the information hider and the receiver. Specific steps are as follows:
[0059] S1: The image owner performs block scrambling and block-level stream encryption on the original image, generates an encrypted imag...
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The invention provides an encrypted image reversible information hiding method based on elastic selection and run length coding. For an image owner, block scrambling and block-level flow encryption are carried out on an original image, and an encrypted image is generated and sent to an information hider. For an information hiding person, firstly, adjacent pixel prediction is carried out based on an encrypted image block, and a prediction error is obtained; secondly, the prediction error bit sequence of the prediction pixels is rearranged, and a rearranged prediction error binary stream is generated; thirdly, elastic compression is performed on the prediction error binary stream by using run length coding and vacating a redundant space; and finally, secret information is encrypted by using the hidden secret key and the secret information is embedded into the vacated redundant space to obtain a secret-containing image. And for the receiver, the original image or the secret information is decrypted according to the owned secret key. Compared with the prior art, the scheme provided by the invention has excellent performance in embedding capacity.
Description
technical field [0001] The invention belongs to the image content security field of information security, and in particular relates to a reversible information hiding method for an encrypted image with elastic selection and run-length coding. Background technique [0002] At present, the network has become an important part of people's production and living environment, bringing great convenience to people, but at the same time it also poses a serious threat to personal information security. In order to protect people's legitimate interests from network infringement, people Try to protect the security of personal information in the era of big data through various means. Information hiding refers to the technology of hiding secret information in publicly available media information, making it difficult for people to detect its existence with intuitive vision and hearing. In the digital age, the carrier form of information hiding can be any kind of digital media, such as imag...
Claims
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Login to View More IPC IPC(8): H04N1/32H04N19/93
CPCH04N1/32272H04N19/93Y02D30/50
Inventor 许舒颖张靖群张真诚周陈倩石梦韬
Owner 绍兴聚量数据技术有限公司