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李宋长雷兴/SM2-signature-creation-and-verification

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MIT

SM2-signature-creation-and-verification

    An implementation of SM2 signature creation and verification is provided. Header files and library files of OpenSSL 1.1.1 or higher version are 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.

    SM2 signature creation and verification are supported in OpenSSL 1.1.1. In the source package, "/crypto/sm2/sm2_sign.c" is a good example. Digital signature creation and verification are encapsulated in an abstract level called EVP. In some cases using EVP interfaces to compute SM2 signature and verify it is a little inconvenient. An implementation bypassing invoking OpenSSL EVP interfaces is given here.

MIT License Copyright (c) 2018 greendow Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

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