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Block encryption method and schemes for data confidentiality and integrity protection

  • US 20060056623A1
  • Filed: 11/07/2005
  • Published: 03/16/2006
  • Est. Priority Date: 01/31/2000
  • Status: Abandoned Application
First Claim
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1. An encryption method comprising the steps of:

  • receiving an input plaintext string comprising a message;

    partitioning the input plaintext string into a plurality of equal-size blocks;

    creating an MDC block that includes the result of applying a non-cryptographic Manipulation Detection Code (MDC) function to the plurality of the equal-size blocks;

    making one and only one processing pass with a single cryptographic primitive over each of said equal-size blocks and the MDC block to create a plurality of hidden ciphertext blocks; and

    performing a randomization function over said plurality of hidden ciphertext blocks to create a plurality of output ciphertext blocks.

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