Cryptography is a method of protecting information through codes and involves encryption and decryption processes. Encryption encodes messages into cipher text using a key, while decryption decodes cipher text back into the original plain text. There are two main types of encryption - symmetric which uses the same key for encryption and decryption, and asymmetric which uses different public and private keys. Common encryption algorithms include the Advanced Encryption Standard (AES).

1. Cryptography
By.,
Gowarthini B

2. Cryptography
• Cryptography is a method of protecting information and
communications through the use of codes.
• The pre-fix "crypt" means "hidden" or "vault" and the suffix
"graphy" stands for "writing.“
• In cryptography, encryption is the process of encoding a message
or information.
• In cryptography, Decryption is the process of decoding a message
or information.

3. Encryption Decryption
• It is the process of converting
plain text to cipher text.
• Decryption is generally the
reverse process of encryption
• It is the process of converting
cipher text to plain text.

5. Types of Encryption
• symmetric encryption: (also called “secret key”)
Use the same key for both encryption and decryption
• asymmetric encryption : (also called “public key”)
Use different keys for encryption and decryption
• Hash:
Used for convert fixed size bit.

6. Symmetric and Asymmetric encryption

10. Add a Slide Title - 2

11. Add a Slide Title - 3

12. AES (Advance Encryption Standard)

21. Thankyou