Hash-Encrypt-Hash, a block cipher mode of operation

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Last updated 2017-06-24 (latest revision 2016-12-21)
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


This memo describes a block cipher mode of operation known as Hash- Encrypt-Hash (HEH).


Alex Cope (alexcope@google.com)

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)