Robust Visual Secret Sharing Scheme Applying to QR Code

Tan, Longdan; Liu, Kesheng; Yan, Xuehu; Liu, Lintao; Lu, Tianqi; Chen, Jinrui; Liu, Feng; Lu, Yuliang

doi:10.1155/2018/4036815

Cited by 8 publications

(3 citation statements)

References 16 publications

(33 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Between April 10 and June 15, 2020, students completed the survey by scanning QR codes during breaks in their college English classes. A QR code is a black-and-white graphic recording of data symbol information with a specific geometric pattern distributed regularly on a two-dimensional plane ( Tan et al, 2018 ), which is widely used and accepted in China for activities such as online payment, daily travel and data entry. Participants completed the questionnaire voluntarily.…”

Section: Methodsmentioning

confidence: 99%

Depression and Creativity During COVID-19: Psychological Resilience as a Mediator and Deliberate Rumination as a Moderator

Shao

Zeng

et al. 2021

Front. Psychol.

View full text Add to dashboard Cite

Purpose: The pandemic of coronavirus disease 2019 (COVID-19), which has had a significant impact on people’s lives, has apparently increased the incidence of depression. Although the topic of how depression affects creativity is contested, previous research has revealed a significant relationship between the two. The purpose of this study is to further investigate the relationship and the mechanisms that operate between depression and creativity.Methods: A total of 881 students at an independent college in China completed a questionnaire consisting of the Self-Reported Depression Scale, Runco Ideational Behavior Scale, Psychological Resilience Scale, Deliberate Rumination Scale and demographic information. Among the respondents, 317 (36.0%) were male and 564 (64.0%) were female, all of whom were from the same grade. Correlation analyses were conducted, and then the researchers carried out mediation analysis and developed a moderated mediation model.Results: The results indicated that (a) depression was positively related to creativity (r = 0.085, p < 0.05); (b) psychological resilience mediated the relationship between depression and creativity; specifically, psychological resilience was negatively related to depression (r = −0.462, p < 0.01), which in turn was positively related to creativity (r = 0.198, p < 0.01); and (c) deliberate rumination moderated the relationship between depression and psychological resilience, showing a significant negative correlation with depression (r = 0.138, p < 0.01), psychological resilience (r = 0.078, p < 0.05), and creativity (r = 0.288, p < 0.05); specifically, higher levels of deliberate rumination strengthened the negative correlation between psychological resilience and depression.Conclusion: The results suggest that depression is a positive predictor of creativity and may promote creativity to some extent. Further, individuals with greater psychological resilience are more creative than those with less psychological resilience, as it is a question of whether they can and to what extent they can effectively use depression as an emotional resource. Last, an individual’s level of deliberate rumination moderates the mediating process, especially at the stage where depression is associated with psychological resilience. These findings advance understanding of the mechanisms that operate between depression and creativity.

show abstract

Section: Methodsmentioning

confidence: 99%

Depression and Creativity During COVID-19: Psychological Resilience as a Mediator and Deliberate Rumination as a Moderator

Shao

Zeng

et al. 2021

Front. Psychol.

View full text Add to dashboard Cite

show abstract

“…Visual cryptography (VC) [11,12], which is a secretsharing technology aimed at images, can be applied to digital devices with limited computing in an untrusted networking environment. Using the threshold and secret-sharing features of VC, we can use simple Boolean operations to achieve real-time encryption of large amounts of image data while removing the dependence on keys.…”

Section: Introductionmentioning

confidence: 99%

A Privacy Protection Framework for Medical Image Security without Key Dependency Based on Visual Cryptography and Trusted Computing

Zhang

Ren

Shafiq

et al. 2023

Computational Intelligence and Neuroscience

View full text Add to dashboard Cite

The development of mobile Internet and the popularization of intelligent sensor devices greatly facilitate the generation and transmission of massive multimedia data including medical images and pathological models on the open network. The popularity of artificial intelligence (AI) technologies has greatly improved the efficiency of medical image recognition and diagnosis. However, it also poses new challenges to the security and privacy of medical data. The leakage of medical images related to users’ privacy is emerging one after another. The existing privacy protection methods based on cryptography or watermarking often bring a burden to image transmission. In this paper, we propose a privacy-preserving recognition network for medical images (called MPVCNet) to solve these problems. MPVCNet uses visual cryptography (VC) to transmit images by sharing. Benefiting from the secret-sharing characteristics of VC, MPVCNet can securely transmit images in clear text, which can both protect privacy and mitigate performance loss. Aiming at the problem that VC is easy to forge, we combine trusted computing environments (TEE) and blind watermarking technologies to embed verification information into sharing images. We further leverage the transfer learning technology to abate the side effect resulting from the use of visual cryptography. The results of the experiment show that our approach can maintain the trustworthiness and recognition performance of the recognition networks while protecting the privacy of medical images.

show abstract

“…To meet the error correction conditions, the larger the secret image, the more share images are generated. Tan et al 11 proposed an XOR-based VCS applying to grayscale QR codes. The scheme substitutes a bit of a share for the second significant bit of the QR code cover image, which can resist common image attacks.…”

Section: Introductionmentioning

confidence: 99%

A QR code-based user-friendly visual cryptography scheme

Ren

Zhang

2022

Sci Rep

View full text Add to dashboard Cite

Benefiting from the development of the Internet and smart devices, it is now convenient to transmit images anywhere and anytime, which poses a new challenge for image security. The Visual Cryptography Scheme (VCS) is a secret sharing method for protecting an image without a key, the merit of VCS is the human visual system (HVS) can restore the secret image by simply superimposing qualified shares, without any computation. To eliminate noise-like shares in traditional VCS, this paper presents a novel QR code-based expansion-free and meaningful visual cryptography scheme (QEVCS), which generates visually appealing QR codes for transmitting meaningful shares. When distributing on public networks, this scheme does not attract the attention of potential attackers. By limiting the gray-level of a halftoned image, QEVCS both keep the computation-free of visual cryptography and the size of recovery image same as the secret images. The experimental results show the effectiveness of QEVCS when preserving the privacy of images.

show abstract

Robust Visual Secret Sharing Scheme Applying to QR Code

Cited by 8 publications

References 16 publications

Depression and Creativity During COVID-19: Psychological Resilience as a Mediator and Deliberate Rumination as a Moderator

Depression and Creativity During COVID-19: Psychological Resilience as a Mediator and Deliberate Rumination as a Moderator

A Privacy Protection Framework for Medical Image Security without Key Dependency Based on Visual Cryptography and Trusted Computing

A QR code-based user-friendly visual cryptography scheme

Contact Info

Product

Resources

About