Cryptographic security is a method used to protect information by transforming it into a format that is unreadable to unauthorized users. This process involves algorithms and keys, which are essential for encrypting and decrypting data. Common applications include securing online communications, such as emails and transactions, ensuring that sensitive information remains confidential. The main goal of cryptographic security is to maintain the integrity, confidentiality, and authenticity of data. Techniques like symmetric encryption and asymmetric encryption are widely used, along with protocols such as SSL/TLS for secure internet connections. These measures help safeguard personal and financial information from cyber threats.