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Assist. ahmed Yousry abdelsatar :: Publications:

A Secured Digital Handwritten Signature System for Visually Impaired People
Authors: A Yousry, M Taha, MM Selim
Year: 2019
Keywords: Chaotic Algorithm, Digital Signature, LSB, Encryption distance, Left Shifting, Steganography.
Journal: International Journal on Software Tools for Technology Transfer
Volume: Not Available
Issue: Not Available
Pages: Not Available
Publisher: Not Available
Local/International: International
Paper Link: Not Available
Full paper Not Available
Supplementary materials Not Available

No doubt that Visually Impaired (VI) people are suffering from the problem of handwritten signature. They are unable to know their signatures and to certify their identity. Hence, some people may impersonate their identity. They may imitate their signatures in the formal papers like money checks and other important papers especially in the government institutions. There is no clarified method that can maintain these signatures. This paper presents a new system for preserving manual signature for VI person in a secure way using encryption techniques and data hiding methods. The proposed system uses the Least Significant Bit (LSB) algorithm for hiding the information including the name of VI, date and the time of the signature. These data are encrypted using an improved chaotic algorithm with a linear feedback shift register approach. Also, a QR code specified for each VI person is created and associated to the document. Both of the signature and the QR can be used to make a secured check on a given contract or document. This scheme increases the complexity of uncovering the content of the hidden data of the signature. The proposed method is implemented on the android tablet that will be placed in formal institutions to be used by the VI person.

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