Device for enciphering and deciphering, by means of the DES algorithm, data to be written to be read from a hard disk
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United States of America Patent
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Apr 30, 1996
Grant Date -
N/A
app pub date -
Feb 18, 1993
filing date -
Feb 18, 1992
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A device for enciphering and deciphering with the aid of the DES algorithm data to be written to or read from a hard disk, wherein the input of a DES cipher device (25) is coupled, via a converter (26) for converting data words having a word width of 16 bits to data words having a word width of 64 bits, to a bus for transferring data words having a word width of 16 bits to and from a central processor unit, and to a bus for transferring data words having a word width of 16 bits to and from a disk storage unit and wherein the output of the DES cipher device is coupled, via a multiplexer (27) for converting data words having a word width of 64 bits to data words having a word width of 16 bits, to the bus of the central processor unit and to the bus of the disk storage unit.
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