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NIST IR 8459 (Initial Public Draft)

Report on the Block Cipher Modes of Operation in the NIST SP 800-38 Series

Date Published: March 21, 2023
No Comments Solicited
Email Questions to:


Nicky Mouha (Strativia), Morris Dworkin (NIST)


NIST IR 8459 is currently being prepared for final publication.  The report reviews the NIST Special Publication 800-38 series, including the limitations of the block cipher modes specified in those recommendations.

Although NIST is not requesting formal public comments, NIST IR 8459 is intended to be a reference for discussion during the upcoming Third Workshop on Block Cipher Modes of Operation, October 3-4, 2023.

Questions and comments about the report may be sent to



AES; block cipher; cryptography; mode of operation; SP 800-38; standardization; Triple-DES
Control Families

None selected


Download URL

Supplemental Material:
Third Workshop on Block Cipher Modes of Operation
Block Cipher Techniques

Document History:
03/21/23: IR 8459 (Draft)


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