Data hashing method and apparatus

Details Data hashing method and apparatus Data hashing method and apparatus

G - Physics

06

F

354/238

G06F 13/00 (2006.01) G06F 17/30 (2006.01)

Patent

CA 1146281

DATA HASHING METHOD AND APPARATUS Abstract of the Disclosure Hashing of a key data signal is accomplished by utilizing a pseudo-random number signal generator for generating a randomized signal in response to the key data signals and an output register for serially receiving the generated pseudo-random signal and for providing segments of the serially-received signal at its output. A counting circuit responsive to a preselected number of shift signals provides an output valid signal when the preselected number of shift signals has occurred and further shifts the pseudo-random number signal generator an amount corresponding to the preselected number of shift signals. The method of the present invention utilizes the steps of presetting the pseudo-random num- ber generator and the counting circuit to an initialized state. The counting circuit is then loaded with a pre- determined count whereupon key data is entered into the pseudo-random number generator so as to randomize the key data. A valid signal is provided when a block of key data has been hashed and the steps of entering the key data and providing a valid signal upon the occurrence of each block of key data is repeated until all key data blocks have been hashed.

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