Tattooing Attack

2014 ◽  
Vol 6 (3) ◽  
pp. 30-46
Author(s):  
Jia-Hong Li ◽  
Tzung-Her Chen ◽  
Wei-Bin Lee
Keyword(s):  
Digital Images ◽  
Image Authentication ◽  
Tamper Detection ◽  
Authentication Scheme ◽  
Tampering Detection ◽  
New Type ◽  
Detection Schemes

Image authentication must be able to verify the origin and the integrity of digital images, and some research has made efforts in that. In this paper, we reveal a new type of malicious alteration which we call the “Tattooing Attack”. It can successfully alter the protected image if the collision of the authentication bits corresponding to the altered image and the original watermarking image can be found. To make our point, we chose Chang et al.'s image authentication scheme based on watermarking techniques for tampering detection as an example. The authors will analyze the reasons why the attack is successful, and then they delineate the conditions making the attack possible. Since the result can be generally applied into other schemes, the authors evaluate such schemes to examine the soundness of these conditions. Finally, a solution is provided for all tamper detection schemes suffering from the Tattooing Attack.

A Fragile Watermarking Chaotic Authentication Scheme Based on Fuzzy C-Means for Image Tamper Detection

2017 ◽  
pp. 856-878
Author(s):  
Kamal Hamouda ◽  
Mohammed Mahfouz Elmogy ◽  
B. S. El-Desouky
Keyword(s):  
Chaotic Maps ◽  
Image Authentication ◽  
Tamper Detection ◽  
Fragile Watermarking ◽  
Authentication Scheme ◽  
Detection Accuracy ◽  
Clustering Technique ◽  
Fuzzy C Means ◽  
Fcm Clustering ◽  
Pass Through

In the last two decades, several fragile watermarking schemes have been proposed for image authentication. In this paper, a novel fragile watermarking authentication scheme based on Chaotic Maps and Fuzzy C-Means (FCM) clustering technique is proposed. In order to raise the value of the tamper localization, detection accuracy, and security of the watermarking system the hybrid technique between Chaotic maps and FCM are introduced. In addition, this scheme can be applied to any image with different sizes not only in the square or even sized images. The proposed scheme gives high values especially in security because the watermarks pass through two levels to ensure security. Firstly, The FCM clustering technique makes the watermark dependent on the plain image. Secondly, the Chaotic maps are sensitive to initial values. Experimental results show that the proposed scheme achieves superior tamper detection and localization accuracy under different attacks.

scholarly journals High-Precision Authentication Scheme Based on Matrix Encoding for AMBTC-Compressed Images

Symmetry ◽  
2019 ◽  
Vol 11 (8) ◽  
pp. 996 ◽  
Author(s):  
Su ◽  
Chang ◽  
Lin
Keyword(s):  
High Precision ◽  
Image Authentication ◽  
Authentication Scheme ◽  
Location Information ◽  
Authentication Code ◽  
Quantization Level ◽  
Tampering Detection ◽  
Compressed Images ◽  
Matrix Encoding ◽  
The Matrix

In this paper, a high-precision image authentication scheme for absolute moment block truncation coding (AMBTC)-compressed images is presented. For each block, two sub-bitmaps are conducted using the symmetrical separation, and the six-bit authentication code is symmetrically assigned to two sub-codes, which is virtually embedded into sub-bitmaps using the matrix encoding later. To overcome distortion caused by modifications to the bitmap, the corresponding to-be-flipped bit-location information is recorded instead of flipping these bits of the bitmap directly. Then, the bit-location information is inserted into quantization levels based on adjusted quantization level matching. In contrast to previous studies, the proposed scheme offers a significantly improved tampering detection ability, especially in the first hierarchical tampering detection without remediation measures, with an average tampering detection rate of up to 98.55%. Experimental results show that our approach provides a more stable and reliable tampering detection performance and sustains an acceptable visual quality.

scholarly journals Modified LSB Watermarking for Image Authentication

2015 ◽  
pp. 5-8
Author(s):  
R. AARTHI ◽  
V. JAGANYA ◽  
S. POONKUNTRAN
Keyword(s):  
Digital Images ◽  
Image Authentication ◽  
Literature Survey ◽  
Authentication Scheme ◽  
Embedding Strategy ◽  
Low Distortion ◽  
Embedding Rate

This paper mainly aims at developing an authentication scheme for digital images. The LSB scheme is chosen base for our proposed work. Through literature survey it is found that conventional LSB scheme provides low embedding rat low distortion and is irreversible. Because of its irreversibility, the conventional LSB scheme cannot be used for critic applications where reversibility is mandatory. Through this literature survey, we learnt that this conventional LSB scheme us only one bit in every pixel for embedding. Our proposed scheme presents a modified LSB embedding strategy that satisfies th reversibility and improves the embedding rate by using two bits in every pixel for embedding.

A CRYPTO SIGNATURE SCHEME FOR IMAGE AUTHENTICATION OVER WIRELESS CHANNEL

2005 ◽  
Vol 05 (01) ◽  
pp. 135-148 ◽  
Author(s):  
QIBIN SUN ◽  
SHUIMING YE ◽  
CHING-YUNG LIN ◽  
SHIH-FU CHANG
Keyword(s):  
Packet Loss ◽  
Digital Signature ◽  
Digital Images ◽  
Image Authentication ◽  
Wireless Channel ◽  
Experimental Results ◽  
Signature Scheme ◽  
Original Image ◽  
Degraded Images ◽  
Block Shuffling

With the ambient use of digital images and the increasing concern on their integrity and originality, consumers are facing an emergent need of authenticating degraded images despite lossy compression and packet loss. In this paper, we propose a scheme to meet this need by incorporating watermarking solution into traditional cryptographic signature scheme to make the digital signatures robust to these image degradations. Due to the unpredictable degradations, the pre-processing and block shuffling techniques are applied onto the image at the signing end to stabilize the feature extracted at the verification end. The proposed approach is compatible with traditional cryptographic signature scheme except that the original image needs to be watermarked in order to guarantee the robustness of its derived digital signature. We demonstrate the effectiveness of this proposed scheme through practical experimental results.

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