The SM4 Block Cipher Algorithm And Its Modes Of Operations

Document Type Replaced Internet-Draft (individual)
Last updated 2017-09-08
Replaced by draft-ribose-cfrg-sm4
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


This document describes the SM4 symmetric blockcipher algorithm published as GB/T 32907-2016 by the Organization of State Commercial Administration of China (OSCCA).


Ronald Tse (
Wong Kit (

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