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See Chinese contents: GM/T 0004-2012 GM/T 0004-2012: SM3 cryptographic hash algorithm
This Standard applies to the digital signature-verification in commercial cryptography applications, the generation-verification of message authentication codes, and the generation of random numbers, which can satisfy the security requirements for multiple cryptography applications. Meanwhile, this Standard can also provide security product manufacturers with standard positioning for products and technologies as well as references for standardization, so as to improve the creditability and interoperability of security products.
