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Fast forgery Detection with the Intrinsic Resampling Properties

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Journal of Information Security 2010年第1期1卷 11-22页

作者： Cheng-Chang Lien Cheng-Lun Shih Chih-Hsun Chou 不详

With the rapid progress of the image processing software, the image forgery can leave no visual clues on the tampered regions and make us unable to authenticate the image. In general, the image forgery technologies often utilizes the scaling, rotation or skewing operations to tamper some regions in the image, in which the resampling and interpolation processes are often demanded. By observing the detectable periodic distribution properties generated from the resampling and interpolation processes, we propose a novel method based on the intrinsic properties of resampling scheme to detect the tampered regions. The proposed method applies the pre-calculated resampling weighting table to detect the periodic properties of prediction error distribution. The experimental results show that the proposed method outperforms the conventional methods in terms of efficiency and accuracy.

关键词： Image forgery Resampling forgery Detection Intrinsic Properties of Resampling

Detection of Copy-Scale-Move forgery in Digital Images Using SFOP and MROGH

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国际计算机前沿大会会议论文集 2016年第1期 83-85页

作者： Mahmoud Emam Qi Han Hongli Zhang School of Computer Science and Technology Harbin Institute of TechnologyHarbin150080China Department of Mathematics Faculty of ScienceMenoufia UniversityShebin El-koom32511Egypt

Social network platforms such as Twitter, Instagram and Facebook are one of the fastest and most convenient means for sharing digital images. Digital images are generally accepted as credible news but, it may undergo some manipulations before being shared without leaving any obvious traces of tampering; due to existence of the powerful image editing softwares. Copy-move forgery technique is a very simple and common type of image forgery, where a part of the image is copied and then pasted in the same image to replicate or hide some parts from the image. In this paper, we proposed a copy-scale-move forgery detection method based on Scale Invariant Feature Operator (SFOP) detector. The keypoints are then described using MROGH descriptor. Experimental results show that the proposed method is able to locate and detect the forgery even if under some geometric transformations such as scaling.

关键词： Image forensics Copy-move forgery detection Scale invariant feature RANSAC MROGH descriptor

A NEW forgery ATTACK ON MESSAGE RECOVERY SIGNATURES

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Journal of Electronics(China) 2000年第3期17卷 234-237页

作者： Li Zichen Li Zhongxian Yang Yixian , Wu Weilin (PO Box 126, Information Security Center, Beijing Univ. of Posts and Telecom., Beijing 100876) Information Security Center Beijing Univ. of Posts and Telecom. Beijing

After extending the forgery attacks to Nyberg-Rueppel’s signatures with message recovery, Atsuko Miyaji in 1997 proposed two suitable message recovery signatures, (F1) and (F2). In this paper, another new forgery att... 详细信息

关键词： Message recovery signature Discrete logarithm forgery attack

Cryptanalysis of PRIMATEs

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Science China(Information Sciences) 2020年第1期63卷 130-139页

作者： Yanbin LI Meiqin WANG Wenqing LIU Wei WANG Key Laboratory of Cryptologic Technology and Information Security Ministry of EducationShandong University Shandong Provincial Key Laboratory of Computer Networks

PRIMATEs is a family of authenticated encryption design submitted to competition for authenticated encryption: security, applicability, and robustness. The three modes of operation in PRIMATEs family are: APE, HANUMAN, GIBBON with security levels: 80, 120 bits. APE is robust despite the nonce misusing. In this study, we revise the algebraic model and find new integral distinguishers for both PRIMATE permutation and its inverse permutation. Moreover, we construct a zero-sum distinguisher for full12-round PRIMATE-80/120 permutation with the 2;/2;complexity, improving over previous work. We also perform an integral attack on 8-round finalization of APE-80/120 with 2;chosen messages. The key recovery process is optimized using the FFT technique presented by Todo and Aoki. Our work is the best attack against APE, demonstrating the practical attack on 8-round finalization of APE-80. The new integral distinguishers apply to create forgeries on 5/6-round finalization of APE and HANUMAN that require2;/2;chosen messages, which is the first forgery attack against APE and HANUMAN.

关键词： PRIMATEs APE HANUMAN integral distinguisher key recovery attack forgery

Cryptanalysis on ‘an arbitrated quantum signature protocol based on the chained CNOT operations encryption’

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The Journal of China Universities of Posts and Telecommunications 2019年第3期26卷 73-80页

作者： Wen Kai Zheng Shihui Sun Bin School of Cyberspace Security Beijing University of Posts and Telecommunications

Arbitrated quantum signature(AQS) is an important branch in quantum cryptography to authenticate quantum information, and cryptanalysis on AQS protocols helps to evaluate and improve security of AQS. Recently, it is discovered that an AQS protocol based on chained controlled-NOT(CNOT) algorithm is vulnerable to a novel attack because a transformation from binary keys into permutations and the chained CNOT algorithm have special properties, which enables a malicious receiver to forge signatures with probability 1/2. Moreover, a malicious signer can also deny his signatures with probability 1/4. Then, two possible improved methods are presented to resist these attacks: one is padding constants to reduce probability of the successful attacks, and the other is a circular chained CNOT algorithm to make the attack strategy invalid. And the security analysis shows that both the two improve methods could well resist these attacks.

关键词： arbitrated quantum signature chained CNOT forgery disavowal

Towards a New Model for the Production of Civil Status Records Using Blockchain

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Journal of Information Security 2023年第1期14卷 52-75页

作者： Tankou Tsomo Maurice Eddy Bell Bitjoka Georges Ngohe Ekam Paul Salomon Laboratory of Electrical Engineering Mechatronics and Signal Processing ENSPY1 University of Yaoundé 1 Yaoundé Cameroon

The work presented in this article focuses on document forgery. Document fraud is a generic term used to designate a fraud, a falsification of a document. The said falsification can be observed in several sectors of everyday life. For a better illustration, let’s consider a system for producing civil status forms. The birth certificate is generally the basis of any individual’s life, and if this document is falsified, it can have repercussions at several levels, particularly in the academic field, where false diplomas, false national identity cards, false passports, false marriage certificates, etc. are obtained. It is therefore demonstrated that a secure production unit for civil status forms can be beneficial to both developed and developing countries. In addition, smart contract is proposed using a private Hyperledger fabric blockchain for validation of civil status documents, and a non-state public key management infrastructure is also proposed to authenticate the nodes that will validate the transactions. This improved blockchain solves the problem of falsification of civil status documents, as false nodes can contribute to the validation of a transaction. The contribution of such a hybrid system is of paramount importance for the identity of civil status documents on the one hand and for the identity of documents in general, and the blockchain to guarantee the distributed, unforgeable, non-repudiation, transparency and disintermediation character.

关键词： Blockchain forgery PKI Civil Status Documentary Identity

Copy-Move Forgeries Detection and Localization Using Two Levels of Keypoints Extraction

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Journal of Computer and Communications 2019年第9期7卷 1-18页

作者： Soad Samir Eid Emary Khaled Elsayed Hoda Onsi Faculty of Computers and Information Cairo University Giza Egypt

Copy-move offense is considerably used to conceal or hide several data in the digital image for specific aim, and onto this offense some portion of the genuine image is reduplicated and pasted in the same image. Therefore, Copy-Move forgery is a very significant problem and active research area to check the confirmation of the image. In this paper, a system for Copy Move forgery detection is proposed. The proposed system is composed of two stages: one is called the detection stages and the second is called the refine detection stage. The detection stage is executed using Speeded-Up Robust Feature (SURF) and Binary Robust Invariant Scalable Keypoints (BRISK) for feature detection and in the refine detection stage, image registration using non-linear transformation is used to enhance detection efficiency. Initially, the genuine image is picked, and then both SURF and BRISK feature extractions are used in parallel to detect the interest keypoints. This gives an appropriate number of interest points and gives the assurance for finding the majority of the manipulated regions. RANSAC is employed to find the superior group of matches to differentiate the manipulated parts. Then, non-linear transformation between the best-matched sets from both extraction features is used as an optimization to get the best-matched set and detect the copied regions. A number of numerical experiments performed using many benchmark datasets such as, the CASIA v2.0, MICC-220, MICC-F600 and MICC-F2000 datasets. With the proposed algorithm, an overall average detection accuracy of 95.33% is obtained for evaluation carried out with the aforementioned databases. forgery detection achieved True Positive Rate of 97.4% for tampered images with object translation, different degree of rotation and enlargement. Thus, results from different datasets have been set, proving that the proposed algorithm can individuate the altered areas, with high reliability and dealing with multiple cloning.

关键词： Copy Move forgery Detection Keypoint Based Methods SURF BRISK Bi-Cubic Interpolation

Discussion on the Appraisal of Ancient Chinese Calligraphies and Paintings

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Contemporary Social Sciences 2019年第5期4卷 110-120页

作者： Li Lin Wu Lingwei(Translator) Sichuan Museum 不详

Throughout Chinese history there have been many outstanding calligraphers and painters who have left behind numerous *** have also been endless copycats,forgeries and ghost-creations bringing much trouble and chaos to the appreciation and study of ancient Chinese calligraphies and *** on certain theories and practices of calligraphy and painting appraisals,this paper summarizes eight basic approaches to the appraisal of ancient Chinese calligraphies and paintings used to separate the true from the false.

关键词： ancient Chinese calligraphies and paintings forgery appraisal approaches

Optical document security / 2nd ed

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