Topic
Visual cryptography
About: Visual cryptography is a research topic. Over the lifetime, 1724 publications have been published within this topic receiving 25300 citations.
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Patent•
26 Jul 2006
TL;DR: In this article, the authors used secret sharing or visual cryptography to code the order into multiple sub orders to add the difficulty of stealing orders as the single order can not get secret order any information.
Abstract: This invention relates to one order transmission method by use of secret sharing or visual cryptography or multi-signal channel suitable for order transmission, which Uses secret sharing or visual cryptography to code the order into multiple sub orders to add the difficulty of stealing orders as the single order can not get secret order any information; the legal user owns all orders through simple computation or transparent film to get original order.
2 citations
08 Oct 2015
TL;DR: The proposed system is used to maintain privacy of images by creating shares of the image using Visual cryptography and securely storing the shares in different databases in the form of QR code.
Abstract: Privacy of Images is of utmost concerned now a days. There are various methods for privacy protection of images. Visual cryptography can be used for imparting privacy to images. Images could be of different types such as fingerprint, signature image etc. which is usually used for authentication. The proposed system is used to maintain privacy of images by creating shares of the image using Visual cryptography and securely storing the shares in different databases in the form of QR code. Storing the shares in the form of QR code conceals the share and reduces the risk of eavesdropping during the transmission phase.
2 citations
01 Jan 2013
TL;DR: A modified version of pixel sieve method is proposed to achieve more security than existing method, and based on key shifting scheme, the proposed method generates quite noisy and highly secure encrypted images.
Abstract: Visual cryptography is a simple and powerful method which can provide high security for confidential information. This technique generates noise-like random pixels on share images to hide secret information. In this paper a modified version of pixel sieve method is proposed to achieve more security than existing method. Based on key shifting scheme, the proposed method generates quite noisy and highly secure encrypted images. The simulation shows that the quality of the encrypted images observably better than existing method.
2 citations
01 Jan 2017
TL;DR: Visual Cryptography is claimed that VC is a unique technique in the sense that the encrypted message can be decrypted directly by the human visual system.
2 citations
09 Apr 2012
TL;DR: In this article, a system for improving the quality of user-derived keying material on touch-screen devices is presented, which allows a device to recover previously generated, highly entropic data suitable for use as (part of) a strong secret key from a user's act of identifying to the device.
Abstract: We exhibit a system for improving the quality of user-derived keying material on touch-screen devices. We allow a device to recover previously generated, highly entropic data suitable for use as (part of) a strong secret key from a user's act of identifying to the device. Our system uses visual cryptography [21], using no additional electronics and no memorization on the part of the user. Instead, we require the use of a transparency overlaid on the touch-screen. Our scheme is similar to the identification scheme of [22] but tailored for constrained, touch-screen displays.
2 citations