Do you want to generate Elliptic Curve Cryptography (ECC) key pairs (public and private keys), write them to a .PEM file, or read them from a .PEM file in C/C++ programming languages?

The ECCPEM library makes it super easy by invoking just one function and the job is done!

Before installing the project, make sure you have installed the minimum requirements: the CMake and OpenSSL libraries.

sudo apt-get install cmake libssl-dev

Use git from the command line to clone the source code:

git clone https://github.com/baloyan/eccpem.git
cd eccpem

To configure and build the project, run the following commands:

mkdir build
cd build

cmake ..
make
sudo make install

As an example, create a eccpem_test.c file and write the following code:

#include <eccpem/eccpem.h>
#include <stdio.h>

int main() {

  const char* pubkey_file = "pub_key.pem";
  const char* privkey_file = "priv_key.pem";

  const char* ec_type = "secp256k1";

  const int error_code = CreateECCKeysPemFiles(ec_type, pubkey_file, privkey_file);
  if (error_code == 1) {
    printf("Generation of ECC key pairs was successful.\n");
  } else {
    printf("Generation of ECC key pairs failed.\n");
  }

  return 0;
}

Compile the above code (gcc for C, g++ for C++):

gcc -o myeccpem eccpem_test.c -leccpem -lssl -lcrypto

Run executable file:

./myeccpem

See C++ example: cpp_gen_pem_files.cpp

For detailed the ECCPEM API documentation take a look at eccpem/docs

Contributions can be made by submitting GitHub pull requests to this repository. In general, the ECCPEM source code follows Google's C++ style guide. (Yes, it is for C++, but please follow the rules for C language as well).

All contributions are made under the MIT license. See LICENSE.