Build

The build process can be configured by editing the variables in the Makefile.conf file.

To build the project, you need to have the PBC library installed. Then, you can build the project by running the following command:

make compile

Once it has been compiled, the project can be run by executing the following command:

./run.sh <params>

For a more options, use the make command:

---------------------------------------------------------------------
 Improved ID-based Proxy Signature Scheme with Message Recovery 0.0.1
---------------------------------------------------------------------
 make [help]     - Prints out this help message.
 make compile    - Compiles the project.
 make run        - Compiles and runs the project.
 make test       - Compiles the whole test suite and runs it.
 make benchmarks - Compiles the whole benchmark suite and runs it.
 make files      - Prints out the files registered by make.
 make clean      - Cleans up the build directory.
---------------------------------------------------------------------

‍Warning
When using either the make dynamic, make static, make test or make benchmarks commands, the source code will be compiled with the custom options of the specified target.
If the object are already present and the sources have not changed, there may not be any compile step.
To make sure the sources are compiled with the right flags, meaning every time the make target changes, it is advised to run the make clean command first.

Dynamic library

The project can be compiled as a dynamic library by running the following command:

make dynamic

This will create a dynamic library in the bin directory.
To use it in your project, either include the headers in the include directory or define the functions you intend to use in your code as extern:

// Best solution:
// #include "IdSignature.h"
// If you won't include the headers, you need to define the functions as extern
#define MAX_DIGEST_SIZE 64
#define SHA1_DIGEST_SIZE 20
typedef enum ext_hash_type_t
{
    sha_1,
    sha_256,
    sha_512
} hash_type_t;
 
extern void hash(uint8_t *digest, const char *message, size_t message_len, hash_type_t hash_type);
 
int main(int argc, char const *argv[])
{
    uint8_t hash_sha_1[MAX_DIGEST_SIZE];
    hash(hash_sha_1, "Hello World", 11, sha_1);
}

When compiling the project, you need to link the library by adding the -lIdSignature flag.
If the library is not in the default library path, you need to add the -L<path> flag to the compiler command.

# Example
gcc -o main main.c -Lbin -lIdSignature

If you get the error error while loading shared libraries: libIdSignature.so: cannot open shared object file: No such file or directory, you need to tell the linker where to find the library.
This can be achieved by setting the LD_LIBRARY_PATH environment variable:

# Example
LD_LIBRARY_PATH=$LD_LIBRARY_PATH:<path to the library>

Static library

The project can be compiled as a static library by running the following command:

make static

This will create a static library in the bin directory.
To use it in your project, either include the headers in the include directory or define the functions you intend to use in your code as extern as described in the dynamic library section.

When compiling the project, you need to link the library by adding the -lIdSignature flag as well as all the dependencies with -lgmp, -lpbc and -lnettle. If the libraries are not in the default library path, you need to add the -L<path> flag to the compiler command.

# Example
gcc -o main main.c -Lbin -lIdSignature -lgmp -lpbc -lnettle