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SM3 (hash function)

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Cryptographic hash function

SM3
General
Designers	National Cryptography Administration
First published	2010

ShangMi 3 (SM3) is acryptographic hash function, standardised for use in commercial cryptography in China.^[1] It was published by the National Cryptography Administration (Chinese:国家密码管理局) on 2010-12-17^[2]^[3] as "GM/T 0004-2012: SM3 cryptographic hash algorithm".^[2]

SM3 is used for implementingdigital signatures,message authentication codes, andpseudorandom number generators.^[4] The algorithm is public^[5]^[6] and is considered similar toSHA-256 in security and efficiency.^[7] SM3 can be used withTransport Layer Security^[8] although it is not enabled by default.

Attacks

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Cryptanalysis

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Shen Y Z, Bai D X, Yu H B. Improved cryptanalysis of step-reduced SM3. Sci China Inf Sci, 2018,61(3): 038105, doi: 10.1007/s11432-017-9119-6

Side channel

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Christophe Clavier and Leo Reynaud and Antoine Wurcker. Yet Another Side Channel Cryptanalysis on SM3 Hash Algorithm (2019).https://eprint.iacr.org/2019/346.

Definitive standards

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SM3 is defined in each of:

GM/T 0004-2012: SM3 cryptographic hash algorithm^[2]
GB/T 32905-2016: Information security techniques—SM3 cryptographic hash algorithm^[9]
ISO/IEC 10118-3:2018—IT Security techniques—Hash-functions—Part 3: Dedicated hash-functions
IETF RFC draft-sca-cfrg-sm3-02^[4]

References

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^Martinkauppi, Louise Bergman; He, Qiuping; Ilie, Dragos (June 2020)."On the Design and Performance of Chinese OSCCA-approved Cryptographic Algorithms".2020 13th International Conference on Communications (COMM). pp. 119–124.doi:10.1109/COMM48946.2020.9142035.ISBN 978-1-7281-5611-8.S2CID 220668639.
^^a ^b ^c"Announcement No.23 of the State Cryptography Administration" (in Chinese (China)). The Office of the State Commercial Code Administration (OSCCA). 2012-03-21. Archived fromthe original on 2016-08-14. Retrieved2016-07-24.
^"SM3 cryptographic hash algorithm" (in Chinese (China)).CNNIC. 2013-12-04. Archived fromthe original on 2016-09-19. Retrieved2016-07-24.
^^a ^b"The SM3 Cryptographic Hash Function".Internet Engineering Task Force. 2018-01-08. Retrieved2023-11-16.
^"Announcement No.22 of the State Cryptography Administration" (in Chinese (China)). The Office of the State Commercial Code Administration (OSCCA). 2010-12-17. Retrieved2016-08-06.^{[permanent dead link]}
^"SM3 cryptographic hash algorithm"(PDF) (in Chinese (China)).
^"An Efficient and Low-Power Design of the SM3 Hash Algorithm for IoT". Electronics. 2019-09-11. Retrieved2021-02-11.
^Yang, P (March 2021).RFC 8998.IETF.doi:10.17487/RFC8998. Retrieved2022-07-30.
^Wang Xiaoyun.SM3 Cryptographic Hash Algorithm[J]. Journal of Information Security Research, 2016, 2(11): 983-994.

v t e Cryptographic hash functions andmessage authentication codes
List Comparison Known attacks
Common functions	MD5 (compromised) SHA-1 (compromised) SHA-2 SHA-3 BLAKE2
SHA-3 finalists	BLAKE Grøstl JH Skein Keccak (winner)
Other functions	BLAKE3 CubeHash ECOH FSB Fugue GOST HAS-160 HAVAL Kupyna LSH Lane MASH-1 MASH-2 MD2 MD4 MD6 MDC-2 N-hash RIPEMD RadioGatún SIMD SM3 SWIFFT Shabal Snefru Streebog Tiger VSH Whirlpool
Password hashing/ key stretching functions	Argon2 Balloon bcrypt Catena crypt LM hash Lyra2 Makwa PBKDF2 scrypt yescrypt
General purpose key derivation functions	HKDF KDF1/KDF2
MAC functions	CBC-MAC DAA GMAC HMAC NMAC OMAC/CMAC PMAC Poly1305 SipHash UMAC VMAC
Authenticated encryption modes	CCM ChaCha20-Poly1305 CWC EAX GCM IAPM OCB
Attacks	Collision attack Preimage attack Birthday attack Brute-force attack Rainbow table Side-channel attack Length extension attack
Design	Avalanche effect Hash collision Merkle–Damgård construction Sponge function HAIFA construction
Standardization	CAESAR Competition CRYPTREC NESSIE NIST hash function competition Password Hashing Competition NSA Suite B CNSA
Utilization	Hash-based cryptography Merkle tree Message authentication Proof of work Salt Pepper

v t e Cryptography
General	History of cryptography Outline of cryptography Classical cipher Cryptographic protocol Authentication protocol Cryptographic primitive Cryptanalysis Cryptocurrency Cryptosystem Cryptographic nonce Cryptovirology Hash function Cryptographic hash function Key derivation function Secure Hash Algorithms Digital signature Kleptography Key (cryptography) Key exchange Key generator Key schedule Key stretching Keygen Machines Ransomware Random number generation Cryptographically secure pseudorandom number generator (CSPRNG) Pseudorandom noise (PRN) Secure channel Insecure channel Subliminal channel Encryption Decryption End-to-end encryption Harvest now, decrypt later Information-theoretic security Plaintext Codetext Ciphertext Shared secret Trapdoor function Trusted timestamping Key-based routing Onion routing Garlic routing Kademlia Mix network
Mathematics	Cryptographic hash function Block cipher Stream cipher Symmetric-key algorithm Authenticated encryption Public-key cryptography Quantum key distribution Quantum cryptography Post-quantum cryptography Message authentication code Random numbers Steganography
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