How to implement Encryption/Decryption on data?

Data encryption is a method in which highly important and sensitive data is converted into unreadable form before its storage or transmission over the LAN/WAN. You can read encrypted data or decrypt it, if you have access to password or secret key.

Case Study: MCS folder have two files name mcs-morning and mcs-evening. User A wants to secure mcs-morning file from user B and all other users in the network. But user B also wants to secure mcs-evening file from user A and all other users in the network.

To implement this, first make a folder with name MCS folder and set NTFS permission as only administrator, user A, user B access MCS folder and administrator have full rights and user A and user B have modify permission on MCS folder. Now to secure files, login with user A and follow the given steps. 

First open the MCS folder and right click on mcs-morning file then click on properties.

• Now click on advance button then check to encrypt content to secure data.
• Click Ok button then apply.
  
  
  
  
  
  • Here system will ask you to secure the parent file and folder or only this file to secure data.
  • Now click Ok button to finish the user A settings. 
  • Now to secure files, login with user B and follow the given steps. 
  • First open the MCS folder and right click on mcs-evening file then click on properties.
  • Now click on advance button then check to encrypt content to secure data.
  • Click Ok button then apply.
  • Here system will ask you to secure the parent file and folder or only file to secure data.
  • Now click Ok button to finish the user B settings. 
  • After implement encryption, user A can not read mcs-evening file and user B can not read the mcs-morning file.
     Decryption of data 
    • First open the MCS folder and right click on mcs-morning file then click on properties.
    • Now click on advance button then uncheck to encrypt content to secure data.
    • Click Ok button then apply.
    • Here your computer will ask you to decrypt the parent file and folder to insecure data then press Ok button to finish process.