Encryption Device, Encryption Method, And Computer Program


Ontology type: sgo:Patent     


Patent Info

DATE

N/A

AUTHORS

SHIBUTANI, Kyoji, SONY CORPORATION , SHIRAI, Taizo, Sony Corporation , AKISHITA, Toru, Sony Corporation , MORIAI, Shiho, Sony Computer Entertainment Inc.

ABSTRACT

In extended Feistel type common key block cipher processing, a configuration is realized in which an encryption function and a decryption function are commonly used. In a cryptographic processing configuration to which an extended Feistel structure in which the number of data lines d is set to an integer satisfying d ≥ 3 is applied, involution properties, that is, the application of a common function to encryption processing and decryption processing, can be achieved. With a configuration in which round keys are permuted or F-functions are permuted in the decryption processing, processing using a common function can be performed by setting swap functions for the encryption processing and the decryption processing to have the same processing style. More... »

Related SciGraph Publications

  • 2001-07-06. On the Construction of Block Ciphers Provably Secure and Not Relying on Any Unproved Hypotheses in ADVANCES IN CRYPTOLOGY — CRYPTO’ 89 PROCEEDINGS
  • 2004. On Feistel Ciphers Using Optimal Diffusion Mappings Across Multiple Rounds in ADVANCES IN CRYPTOLOGY - ASIACRYPT 2004
  • 2005-06-26. Generalized Feistel networks in ADVANCES IN CRYPTOLOGY — ASIACRYPT '96
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