The SM4 Blockcipher Algorithm And Its Modes Of Operations

Document Type Expired Internet-Draft (individual)
Authors Ronald Tse  , Wong Kit  , Markku-Juhani Saarinen 
Last updated 2018-11-05 (latest revision 2018-04-22)
Replaces draft-crypto-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This Internet-Draft is no longer active.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 State Cryptography Administration of China (SCA). This document is a product of the Crypto Forum Research Group (CFRG).


Ronald Tse (
Wong Kit (
Markku-Juhani Saarinen (

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