Digital Signature and Watermark Methods For Image Authentication using Cryptography Analysis

Murty, Mahesh S.; Veeraiah, D.; Rao, Akshit

doi:10.5121/sipij.2011.2214

Cited by 12 publications

(9 citation statements)

References 8 publications

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“…In that global public key, privet key & public key of user & per message one secrete number is given. Authentication is also done by using image verification [1]. Similarly in frequency domain watermarking is done by using DCT & FHT.…”

Section: Literature Reviewmentioning

confidence: 99%

Analysing Effect of Different Noise Attacks Using Quality Attributes with Specific Reference to Spatial Watermarking Method

Joshi¹,

Jain²,

Maheshwari³

2013

2013 International Conference on Communication Systems and Network Technologies

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In this paper we propose a method to hide colour watermark in the host image based on spatial domain technique. For the evaluation of Imperceptibility & Robustness of the proposed method we have calculated six different quality measure parameters. We have tested watermarked image against different noise attacks at different noise densities. The parameter so calculated gives the measure of perceptible quality of embedded & extracted images.

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Section: Literature Reviewmentioning

confidence: 99%

Analysing Effect of Different Noise Attacks Using Quality Attributes with Specific Reference to Spatial Watermarking Method

Joshi¹,

Jain²,

Maheshwari³

2013

2013 International Conference on Communication Systems and Network Technologies

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“…If this person makes a modification, this is called an attack. [12,13,14,15,20,21] There are various kinds of attacks like copy, removal, mosaic etc. Watermark detection is an algorithm which is used to find the attacked data to attempt to extract the watermark from it.…”

Section: Principle Of Digital Watermarkingmentioning

confidence: 99%

A Novel Digital Watermarking Algorithm using Random Matrix Image

Pandya¹,

Joshi²,

Jani³

2013

IJCA

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The availability of bandwidth for internet access is sufficient enough to communicate digital assets. These digital assets are subjected to various types of threats.[19] As a result of this, protection mechanism required for the protection of digital assets is of priority in research. The threat of current focus is unauthorized copying of digital assets which give boost to piracy. This under the copyright act is illegal and a robust mechanism is required to curb this kind of unauthorized copy. To safeguard the copyright digital assets, a robust digital watermarking technique is needed. The existing digital watermarking techniques protect digital assets by embedding a digital watermark into a host digital image. This embedding does induce slight distortion in the host image but the distortion is usually too small to be noticed. At the same time the embedded watermark must be robust enough to with stand deliberate attacks. There are various techniques of digital watermarking but researchers are making constant efforts to increase the robustness of the watermark image. The layered approach of watermarking based on Huffman coding [5] can soon increase the robustness of digital watermark. [11] Ultimately, increasing the security of copyright of protection. The proposed work is in similar direction where in RMI (Random Matrix Image) is used in place of Huffman coding. This innovative algorithm has considerably increased the robustness in digital watermark while also enhancing security of production.

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“…In development of cryptographic technique the researchers have focused on cryptographic and steganographic techniques [16][17][18][19][20].…”

Section: Review Of Related Workmentioning

confidence: 99%

“…For example for ASCII value of capital A is 65 and small a is 97. The code is used here for key to encrypt and embed at source and extract and decrypt at destination [13].…”

Section: Introductionmentioning

confidence: 99%

A Bespoke Technique for Secret Messaging

Pandya¹,

Joshi²,

Jani³

2013

IJCNIS

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-The communication of digital assets on the internet infrastructure is increasing in its volume with threats on its security with regard to active and passive attacks of eavesdroppers. This concern has opened up the research channel to improve the techniques of secure and reliable communication protecting intellectual property rights and message security. Constant efforts of researchers in this area to achieve communication at faster rate maintaining security of digital assets, is giving improved techniques to achieve the goal. The efforts made here in this work are in the direction to enhance level of security in making faster reliable and secure communication. In spite of continued efforts, still as on today, it is challenging to hide the communication from eavesdropper. The disciplines of Cryptography, Steganography and Digital Watermarking are still popular areas of research. They are continuously digging to find robust and effective algorithms to protect digital communications and digital assets. It is very true that if the complexity in algorithm is increased, higher security level can be achieved. In the reviewed work, Researchers have developed algorithms for text encryption and embedment in digital watermarking using LSB at cost of time. The proposed work is targeted to maintain the tradeoff between the complexity level of algorithm and security level of message considering the time factor. The proposed work has evolved with two algorithms: AMEADT (ASCII Message Encryption and Decryption Technique) to protect secret message and AMEAET (ASCII Message Embedment and Extraction Technique) to embed encrypted text to digital image. The implementation of these algorithms has resulted in justifying higher level of security with comparatively lower level of complexity of algorithm.

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Digital Signature and Watermark Methods For Image Authentication using Cryptography Analysis

Cited by 12 publications

References 8 publications

Analysing Effect of Different Noise Attacks Using Quality Attributes with Specific Reference to Spatial Watermarking Method

Analysing Effect of Different Noise Attacks Using Quality Attributes with Specific Reference to Spatial Watermarking Method

A Novel Digital Watermarking Algorithm using Random Matrix Image

A Bespoke Technique for Secret Messaging

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