Biometrics systems function to identify individuals by matching a specific personal characteristic, the biometrics identifier, with one previously recorded. Biometric identification considers individual physiological characteristics and/or typical behavioural patterns of a person to validate their authenticity. Fingerprints are used to generate the key; this key value is used in the Data Encryption Standard (DES) algorithm. Initially the finger print image is converted into a pixel matrix. After the matrix conversion the matrix is applied into the one way hash function. The hash code value is a 64 bit string value. This hash code value is passed into the DES algorithm as key for the encoding and decoding process. This 64-bit key value is converted as a 56 bit key value by the DES algorithm computational operations. The system also performs an authentication checking process in the decryption process to verify the correctness of the key value. Fingerprint Selection contains receiving finger print data and conversion of finger print values into matrix tasks. This accepts the finger print data as an image file. Key Generation generates the key for the security system. Using the selected finger print image data generates the key value. Encryption performs the document encoding task. The user can select any file for the encryption process. Decryption process is performed to retrieve the original document from the encoded document. Biometrics offers new perspectives in high-security applications while supporting natural, user-friendly and fast authentication.
