SP 800-38A 2001 edition. Recommendation for Block Cipher Modes of Operation: Methods and Techniques

  • Authors:
  • Morris J. Dworkin

  • Affiliations:
  • National Institute of Standards and Technology

  • Venue:
  • SP 800-38A 2001 edition. Recommendation for Block Cipher Modes of Operation: Methods and Techniques
  • Year:
  • 2001

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Abstract

This recommendation defines five confidentiality modes of operation for use with an underlying symmetric key block cipher algorithm: Electronic Codebook (ECB), Cipher Block Chaining (CBC), Cipher Feedback (CFB), Output Feedback (OFB), and Counter (CTR). Used with an underlying block cipher algorithm that is approved in a Federal Information Processing Standard (FIPS), these modes can provide cryptographic protection for sensitive, but unclassified, computer data.