Source Files

QR generator

• qr.h: Contains function declarations for all source files except main().
• input.c: Handles user input and validation, prompting for re-entry on invalid data.
• encryption.c: Generates public and private keys, encrypts user data.
• qrgen.c: Generates and saves the QR code, sends it to the user along with the private key.
• main.c: Coordinates the execution of functions.

QR decryptor

• decode.hpp: Contains function declarations for all source files except main().
• decode.cpp: Extracts data from QR code.
• decryption.c: Decodes and decrypts data from QR code.
• main.c: Coordinates the execution of functions.

Requirements

• OpenSSL
• qrencode
• libjpeg
• zbar
• opencv

sudo apt-get install libjpeg-dev libqrencode-dev libopencv-dev zbar-tools libssl-dev libzbar-dev

Compilation

To compile the programs, use:

• QR generator:

gcc main.c input.c encryption.c qr.c -o ../app/qrgen -lcrypto -lqrencode -ljpeg

• QR decryptor:

g++  decode.cpp main.c decryption.c -o ../app/decode -I/usr/include/opencv4 -lcrypt -lopencv_core -lopencv_imgcodecs -lopencv_imgproc -lopencv_highgui -lssl -lcrypto -lzbar