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.