A safe active image tampering detection method and device

An active, image technology, applied in image communication, electrical components, transmission systems, etc., can solve problems such as inability to accurately detect whether the image has been tampered with, incorrect detection results, and the inability of the receiving end device to detect the original image has been tampered with. The effect of ensuring image integrity and image authenticity, avoiding detection results, and ensuring image authenticity
CN104935783BActive Publication Date: 2017-10-03BEIJING UNIV OF POSTS & TELECOMM
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
BEIJING UNIV OF POSTS & TELECOMM
Publication Date
2017-10-03

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Abstract

The embodiment of the present invention discloses a safe and active image tampering detection method and device. The method comprises: sending end equipment obtaining a first image, generating a random value of which the length is a second numerical value, obtaining a pre-configured fixed value of which the length is a third numerical value, and using the random value and the fixed value for generating a specified type character string of which the length is a first numerical value; performing Hash operation on the first image and the specified type character string by using an information digest algorithm to obtain a first information digest value; performing encryption processing on the specified type character string by using an encryption algorithm to obtain an encrypted specified type character string; adding the first information digest value and the encrypted specified type character string to the first image for obtaining a second image; sending the second image to receiving end equipment; and the receiving end equipment using the first information digest value and the encrypted specified type character string for detecting whether the first image is tampered or not. In the embodiment of the present invention, the image integrity and the image authenticity in the process of obtaining evidence for the images are ensured.
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Description

technical field

[0001] The invention relates to the technical field of computer applications, in particular to a safe active image tampering detection method and device. Background technique

[0002] In order to detect whether the image has been tampered with during the forensics process, the sending device and the receiving device will agree on the same information digest algorithm, such as MAC (Message Authentication Code, message authentication code) algorithm. Before sending the original image, the sending device uses the MAC algorithm to perform Hash operation on the original image to obtain the first information summary value, and sends the first information summary value and the original image to the receiving device. After receiving the first information digest value and the original image, the receiver device uses the same MAC algorithm to perform Hash operation on the original image to obtain the second information digest value. If the first information digest val...

Claims

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