BCR code

Install GMP

1. Download GMP from https://gmplib.org
2. In Terminal, cd to the gmp folder
3. ./configure
4. make
5. sudo make install

Install GMP-ECM

1. Download GMP ECM from http://gforge.inria.fr/projects/ecm/
2. In Terminal, cd to the ecm folder
3. ./configure
4. make ecm-params
5. make
6. sudo make install

In the Terminal session, where you will build and execute the BCR code,

1. export C_INCLUDE_PATH=/usr/local/include
2. export LIBRARY_PATH=/usr/local/lib
3. export LD_LIBRARY_PATH=/usr/local/lib
4. export LD_RUN_PATH=/usr/local/lib

To build BCR decryption code and execute,

1. cd /Project_1
2. gcc bcr.c -lgmp
3. ./a.out

The code takes 30 minutes to execute because of the prime factorization step. The final message is printed on the output screen.