Encryption is a process in which information is transformed into an unreadable code or an incomprehensible form to protect it from unauthorized access. Encryption converts data into an unreadable form that can only be reversed into its original readable form, known as plaintext, with a special key. This ensures that only authorized individuals who possess the correct key have access to the information.

Encryption is used in many areas to guarantee the security and confidentiality of data:

• Data security: Encryption is used to protect sensitive data such as personal information, passwords, credit card details and medical records. In the event of a data breach, the stolen data cannot be read without the key.
• Communication security: When transmitting data over insecure networks, such as the internet, encryption is used to ensure that third parties are unable to intercept or manipulate the data during transmission. Well-known protocols for secure communication include HTTPS for secure web browsing and Secure Socket Layer (SSL) or Transport Layer Security (TLS) for encrypted email communication.
• Data protection: Companies and organizations use encryption to protect the personal data of their customers and employees and to comply with legal data protection requirements.

Various encryption algorithms and methods are used depending on the security requirements and context. Some well-known encryption algorithms are AES (Advanced Encryption Standard), RSA (Rivest-Shamir-Adleman), ECC (Elliptic Curve Cryptography) and many more.
 

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