Encryption is the process of converting readable data (plaintext) into an unreadable format (ciphertext) using algorithms and keys. It is used to protect sensitive information so that only authorized users can access it.
In cybersecurity and data protection, encryption ensures confidentiality by making data useless to attackers even if it is intercepted. The original data can only be restored using a correct decryption key.
For example:
- Online banking systems encrypt transaction data to prevent theft.
- Messaging apps encrypt chats so only the sender and receiver can read them.
- Websites use HTTPS encryption to secure data between browser and server.
- Cloud storage services encrypt files before saving them on servers.
Common technologies and concepts related to encryption include:
- Symmetric Encryption
- Asymmetric Encryption
- Public Key & Private Key
- SSL/TLS
- AES (Advanced Encryption Standard)
- RSA Algorithm
- Hashing
- Cryptography
- Cybersecurity Protocols
