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Apparatus for encryption and method using the same

  • US 20080187132A1
  • Filed: 10/10/2007
  • Published: 08/07/2008
  • Est. Priority Date: 02/02/2007
  • Status: Abandoned Application
First Claim
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1. An encryption apparatus comprising:

  • a first block cipher which block-encrypts an N-bit input into an M-bit output in which M is greater than N;

    a parallel processor which divides the M-bit output into at least two N-bit inputs, and block-encrypts each of the N-bit inputs into each of M-bit outputs by a parallel process which uses second block ciphers corresponding to a number of the divided N-bit inputs; and

    a converter which converts a plaintext into a ciphertext based on the block-encrypted M-bit output.

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