* **SM2** - This is a SM2 sm2p256v1 implementation whose performance is similar like golang native NIST P256 under **amd64** and **arm64**, for implementation detail, please refer [SM2实现细节](https://github.com/emmansun/gmsm/wiki/SM2%E6%80%A7%E8%83%BD%E4%BC%98%E5%8C%96). It supports ShangMi sm2 digital signature, public key encryption algorithm and also key exchange.
* **SM3** - This is also a SM3 implementation whose performance is similar like golang native SHA 256 with SIMD under **amd64**, for implementation detail, please refer [SM3性能优化](https://github.com/emmansun/gmsm/wiki/SM3%E6%80%A7%E8%83%BD%E4%BC%98%E5%8C%96). It also provides A64 cryptographic instructions SM3 POC without test.
* **SM4** - For SM4 implementation, SIMD & AES-NI are used under **amd64** and **arm64**, for detail please refer [SM4性能优化](https://github.com/emmansun/gmsm/wiki/SM4%E6%80%A7%E8%83%BD%E4%BC%98%E5%8C%96), it supports CBC/CFB/OFB/CTR/GCM/CCM/XTS modes. It also provides A64 cryptographic instructions SM4 POC without test.
* **ZUC** - For ZUC implementation, SIMD, AES-NI and CLMUL are used under **amd64** and **arm64**, for detail please refer [Efficient Software Implementations of ZUC](https://github.com/emmansun/gmsm/wiki/Efficient-Software-Implementations-of-ZUC)
* **ECDH** - a similar implementation of golang ECDH that supports SM2 ECDH & SM2MQV without usage of **big.Int**, a replacement of SM2 key exchange. For detail, pleaes refer [is my code constant time?](https://github.com/emmansun/gmsm/wiki/is-my-code-constant-time%3F)
* **DRBG** - Random Number Generation Using Deterministic Random Bit Generators, for detail, please reference **NIST Special Publication 800-90A** and **GM/T 0105-2021**: CTR-DRBG using derivation function and HASH-DRBG. NIST related implementations are tested with part of NIST provided test vectors.
