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NIST Workshop on the Requirements for an Accordion Cipher Mode 2024


NIST will host a workshop on the development of a new block cipher mode of operation on June 20-21, 2024, at the National Cybersecurity Center of Excellence in Rockville, Maryland. 

Workshop Announcement/Call for Abstracts (PDF)

Important Dates 

  • Workshop: June 20-21, 2024  
  • Submission deadline: May 1, 2024  
  • Notification date: May 17, 2024  
  • Registration deadline: June 13, 2024 

Updates and additional information will be posted to the ciphermodes-forum email and to the workshop website. Instructions for subscribing to the email forum can be found at

Inquiries:  ciphermodes [at] (subject: BCM%20Workshop%20Question) (ciphermodes[at]nist[dot]gov)

Created March 8, 2024, Updated March 13, 2024