Mobile terminal video stream stealth transmission method based on Android platform

Abstract

The invention discloses a mobile terminal video stream stealth transmission method based on the Android platform. The method comprises the following steps: scrambling a confidential letter to be hidden to obtain a chaotic confidential letter sequence; selecting an image block with complex vein, large movement component and suitable for information hiding as a to-be-embedded carrier; extracting confidential letter bits from the chaotic confidential letter sequence in groups, performing xor operation on 4 intermediate frequency coefficients in all image block DCT quantization coefficients with marks and sizes of 8*8 pixels to form video compressed encoding stream containing stealth; and restoring the confidential letter from the video compressed encoding stream by a receiver by using a negotiation key. Execution efficiency of the method is considered while ensuring the security, the stealth effect is good, the flexibility is high, and the stealth communication demands of the mobile terminal are satisfied.

Description

technical field [0001] The invention belongs to the field of information security, and further relates to a method for secretly transmitting video streams of mobile terminals based on an Android platform in the field of information hiding application technology. [0002] The invention combines the information hiding technology with the existing instant messaging application technology of the mobile terminal, and embeds the secret information into the video stream transmission. The concealment of the video stream is used to achieve the non-perceptual transmission of secret information, and the receiver uses the key shared with the sender to extract and decode the secret information. Background technique [0003] In the era of Internet applications, big data and cloud computing provide great convenience for distributed storage and intelligent search of massive data. But it also brings a huge security threat to the privacy of network users. Important data, private and sensiti...

AI Technical Summary

Problems solved by technology

The shortcomings of this method are: compared with the central processing unit CPU of a personal computer PC, the memory cache capacity of the mobile terminal device is small, the processing function of the central processing unit CPU is low, and the communication bandwidth is limited in a wireless environment, which is vulnerable to Due to the impact of environmental interference, the existing patented methods cannot be applied to the secret communication of mobile terminal devices under the Android platform

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