Why Cryptography Is a Must-Know Technology for You
Imagine this scenario: you are transferring money through online banking, messages are being sent via instant messaging apps, and encrypted assets are securely stored on exchanges—all behind the scenes is the same invisible guardian: cryptography.
Cryptography (from Greek "kryptos" meaning hidden, and "grapho" meaning write) is far more than just encrypting data. It is about ensuring that information can only be seen by authorized parties, that data cannot be tampered with during transmission, that identities are authentic and verifiable, and that actions cannot be denied after they are performed. In today’s digital ecosystem—from secure network connections, private communications, financial transactions to blockchain and cryptocurrency operations—cryptography plays an indispensable role.
The Four Core Functions of Cryptography
Confidentiality: Only those with the key can understand the encrypted information, just like only someone who knows the secret code can open the safe.