A Modified Block Based Biometric Fragile Watermark Technique

In the era of digital communication data sent through networks has increased. Providing security to data which is in the form of image, text, video, audio has been big challenge. For copyright information and authentication of the data, biometrics authentication is used. At the same time protection of biometrics data is also essential parameter. To increase the security level of biometric data watermarking technique is used. In this, paper we proposed block based biometric fragile watermarking technique which detects slight changes in the watermarked data. Fragile watermark technique generates watermark depending on the embed watermark. In this proposed method authentication data inserted into the least significant bit (LSB) of cover image. The experimental result shows the quality of the image by using conventional LSB technique, with use of key.