Encryption technologies are methods used to secure information by converting it into a code that can only be read by someone who has the correct key or password. This process helps protect sensitive data, such as personal information and financial transactions, from unauthorized access. Common encryption methods include symmetric encryption, where the same key is used for both encryption and decryption, and asymmetric encryption, which uses a pair of keys—one public and one private. These technologies are widely used in various applications, including secure communications over the internet, data storage protection, and digital signatures. By ensuring that only authorized users can access the information, encryption plays a crucial role in maintaining privacy and security in the digital age.