Encryption & Decryption

1. What is Encryption?

Encryption is a process used to convert plaintext (readable data) into ciphertext (unreadable data). This ensures that even if data is intercepted during transmission, it cannot be understood by unauthorized parties. Encryption algorithms use keys—mathematical values that dictate how the plaintext is transformed. Common encryption algorithms include AES (Advanced Encryption Standard) and RSA (Rivest–Shamir–Adleman). Encryption is crucial for securing sensitive data like financial transactions, personal information, and confidential communications.

2. What is Decryption?

Decryption is the reverse process of encryption. It converts ciphertext back into plaintext using a decryption key. Only authorized individuals or systems with the correct key can decrypt the data and access the original content. Decryption is used when the data needs to be read or processed after being secured through encryption.

4. Importance of Encryption and Decryption

Encryption and decryption are vital for maintaining data privacy, integrity, and security in various systems, especially in communications, online transactions, and data storage. They protect against unauthorized access, tampering, and cyber-attacks.