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The Commercial Data Masking Facility (CDMF) data privacy algorithm

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4 Author(s)
Johnson, D.B. ; IBM Federal Systems Company, 9500 Godwin Drive, Manassas, Virginia 22110, USA ; Matyas, S.M. ; Le, A.V. ; Wilkins, J.D.

The Commercial Data Masking Facility (CDMF) algorithm defines a scrambling technique for data confidentiality that uses the Data Encryption Algorithm (DEA) as the underlying cryptographic algorithm, but weakens the overall cryptographic operation by defining a key-generation method that produces an effective 40-bit DEA key instead of the 56 bits required by the full- strength DEA. In general, products implementing the CDMF algorithm in an appropriate manner may be freely exported from the USA. The algorithm is thus intended as a drop-in replacement for the DEA in cryptographic products. Discussed in this paper are the design requirements, rationale, strength, and applications of the CDMF algorithm.

Note: The Institute of Electrical and Electronics Engineers, Incorporated is distributing this Article with permission of the International Business Machines Corporation (IBM) who is the exclusive owner. The recipient of this Article may not assign, sublicense, lease, rent or otherwise transfer, reproduce, prepare derivative works, publicly display or perform, or distribute the Article.  

Published in:

IBM Journal of Research and Development  (Volume:38 ,  Issue: 2 )