Standard No.:	GM/T 0002-2012
English Name:	SM4 Block Cipher Algorithm
Chinese Name:	SM4分组密码算法
Chinese Classification:	L80    Data encryption
Professional Classification:	GM
Source Content Issued by:	Office of Security Commercial Code Administration
Issued on:	2012-03-21
Implemented on:	2012-3-21
Status:	valid
Target Language:	English
File Format:	PDF
Word Count:	2500 words
Translation Price(USD):	50.0
Delivery:	via email in 1 business day

1 Scope This standard specifies algorithm structure and algorithm description of SM4 block cipher algorithm and arithmetic examples. This standard is applicable to demand of block cipher used in cryptographic application. 2 Terms and Definitions For the purposes of this document, the following terms and definitions apply. 2.1 block length the number of bits of a message block 2.2 key length the number of bits of key 2.3 key expansion algorithm arithmetic unit transforming key into round key

Foreword i 1 Scope 2 Terms and Definitions 3 Symbols and Abbreviations 4 Algorithm Structure 5 Key and Key Parameter 6 Round Function F 7 Algorithm Description Annex A (Informative) Arithmetic Example