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Key controlled block-cipher cryptographic system employing a multidirectional shift matrix

  • US 4,195,200 A
  • Filed: 06/30/1976
  • Issued: 03/25/1980
  • Est. Priority Date: 06/30/1976
  • Status: Expired due to Term
First Claim
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1. A Block-Cipher Cryptographic System for enciphering/deciphering a block of binary data under the control of a unique binary key, said system including a multidirectional shift matrix capable of shifting in at least two directions along a predetermined coordinate of said matrix said system further including means for loading said matrix with a block of data to be cryptographically transformed, means for loading said binary key, means for causing said matrix to shift to a predetermined distance along a coordinate of said array which is a function of said key, end around connection means for said array for transferring data shifted out of one edge thereof back into the opposite edge, and means for continuing said shifting operations for a predetermined number of rounds until the cryptographic transformation process is completed.

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