This code encrypts an image using randomly generated key and decrypts the image using same key. Key is generated using random numbers and that key joins with the original image to encrypt that image. To regenerate the original image same key is used.
Pics are stored in the directories with following convention
pics_to_hide - Folder for pics to be encrypted
pics_after_hide - Folder for encrypted pics
pics_recovered - Folder for decrypted pics
keypic - Folder for key