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Cryptographic method and apparatus for data communication and storage

  • US 6,345,101 B1
  • Filed: 10/07/1998
  • Issued: 02/05/2002
  • Est. Priority Date: 10/07/1998
  • Status: Expired due to Fees
First Claim
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1. A method for encrypting plain-text D into cipher-text E, comprising the steps of:

  • splitting the plain-text D into N data blocks, each of the same length;

    randomly selecting a data string S of the same length as each of the data blocks;

    selecting a key K of the same length as each of the data blocks;

    producing a XORed data block by a first XOR-type operation;

    producing a shuffled data block by a shuffling operation;

    producing a cipher data block by a second XOR-type operation;

    iterating the steps of producing a XORed data block, producing a shuffled data block and producing a cipher data block for each of the N data blocks; and

    concatenating the cipher data blocks into the cipher-text E.

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