Encryption

Presented By:Aaina katyal

Contents Introduction to Encryption Why is encryption necessary? Benefits of Data Encryption How to encrypt a file in Windows XP Types of Encryption Common terms

Introduction to Encryption

Encryption is the conversion of data into a form, that cannot be easily understood by unauthorized people

The translation of data into a secret code. Encryption is the most effective way to achieve data security. To read an encrypted file, you must have

access to a secret key that enables you to decrypt it. Plain text Cipher text.

Why is encryption necessary? Encryption is taking straight text and

scrambling it for security purposes. It's like a Locker system. You put any valuables

and lock it using a code. The necessity of encryption is mainly to

protect your documents

Benefits of Data Encryption

Flexibility

Transparency

Process

How to encrypt a file

Click Start, point to All Programs, point toAccessories, and then click Windows Explorer.

If you want to encrypt only the file, click Encrypt the file only, and then click OK.

If you want to encrypt the file and the folder in which it is located, click Encrypt the file and the parent folder, and then click ok.

Symmetric - same secret, password or key is used to encrypt and

to decrypt.

Asymmetric - It uses two different keys - a public key and a  private

key .

Common Terms

Encrypt - To alter information using a code .

Decrypt - Process of converting encrypted data back into its

original form.

Public key and Private key