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# SM2-encrypt-and-decrypt
An implementation of computing SM2 encryption and decryption is provided. Header files and library files of OpenSSL 1.1.1 or higher version is needed while compiling and linking.
    An implementation of computing SM2 encryption and decryption is provided. Header files and library files of OpenSSL 1.1.1 or higher version is needed while compiling and linking. OpenSSL website is: https://www.openssl.org
    SM2 is a cryptographic algorithm based on elliptic curves. It is defined in the following standards of China:
- GB/T32918.1-2016,
- GB/T32918.2-2016,
- GB/T32918.3-2016,
- GB/T32918.4-2016,
- GM/T 0003-2012.
    Computing SM2 encryption and decryption are supported in OpenSSL 1.1.1. In the source package, "/crypto/sm2/sm2_crypt.c" is a good example. SM2 Encryption and decryption are encapsulated in an abstract level called EVP. In some cases using EVP interfaces to compute SM2 encryption and decryption is a little inconvenient. An implementation bypassing invoking OpenSSL EVP interfaces directly is given here.
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