Data Encryption

• Encryption is 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 or password that enables you to decrypt it.
• Unencrypted data is called plain text, encrypted data is referred to as cipher text.

Types of Encryption

• There are two types of encryptions: Asymmetric and Symmetric.

Asymmetric Encryption

• Asymmetric Encryption is also known as Public Key Cryptography, since users typically create a matching key pair, and make one public while keeping the other secret. Encryption and decryption keys are different.

Symmetric Encryption

• Symmetric encryption is also known as Single (Private) key encryption.
• The encryption and decryption keys are the same.

Advantages

• Keeps it confidential.
• Very reliable Sometimes.
• Encrypt as much as you want.

Disadvantages

• high costs.
• Time consuming for the computer.