Cryptography – Particular algorithmic function encoding – Nbs/des algorithm
Patent
1988-12-05
1990-05-15
Cangialosi, Salvatore
Cryptography
Particular algorithmic function encoding
Nbs/des algorithm
380 45, 380 49, H02L 904
Patent
active
049264818
ABSTRACT:
A security code system for controlling access to computer and computer-controlled entry situations comprises a plurality of subsets of alpha-numeric charcters disposed in random order in matrices of at least two dimensions forming theoretical rectangles, cubes, etc., such that when access is desired, at least one pair of previously unused character subsets not found in the same row or column of the matrix is chosen at random and transmitted by the computer. The proper response to gain access is transmittal of subsets which complete the rectangle, and/or a parallelepiped whose opposite corners were defined by first groups of code. Once used, subsets are not used again to absolutely defeat unauthorized access by eavesdropping, and the like.
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Cangialosi Salvatore
Glenn Charles E. B.
Jones Thomas H.
Manning John R.
The United States of America as represented by the Administrator
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