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1. System for conducting remote biometric operations that includes a biometric data reading device connected to a personal computer and configured to send said encrypted biometric data to a remote data authentication centre for establishing a secure communications channel once user identity has been verified via said biometric data; the system comprising:
(a) a biometric acquisition means comprising a biometric sensor and a controller; (b) a life detection means comprising a pulse detector; (c) a signal processing and hardware encryption unit adapted to encrypt and decrypt a biometric signal, the signal processing and hardware encryption unit comprising:
an internal memory adapted to store at least a table of randomly generated m keys; anda Linear Feedback Shift Register (LFSR) adapted to route sequences of said table of keys, which vary with time in order to determine a selected key using a routing descriptor, configured by an LFSR circuit of k stages, with 2k being equal or greater than m, wherein said LFSR circuit is determined by a primitive polynomial A of order k, and a filter B of order j defined by a Boolean function with output numbers between 1 and m, being j≦log2(m);wherein the signal processing and hardware encryption unit is adapted to: generate a random seed to define an initial state of the routing descriptor; execute an encryption/decryption algorithm of said seed and of a message, wherein said algorithm includes an XOR bit to bit operation with said key selected in order to generate an encrypted/non encrypted message; and encrypt or decrypt the random seed and the message that contains digital information in different manners throughout time; (d) a physical security means comprising micro switches used for detecting torsion or manipulation of the device; and (e) an external memory adapted to communicate with the signal processing and hardware encryption unit.
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