What is the function of cryptography?

The function of cryptography primarily revolves around securing messages and data. This is achieved through various techniques that convert plain text into coded formats, making it unreadable to unauthorized parties. Cryptography ensures the confidentiality, integrity, and authenticity of information, which is vital in safeguarding sensitive data, particularly in the realm of digital communications and transactions.

For instance, when sensitive information such as personal details or financial data is transmitted over the internet, cryptography protects it using algorithms that encrypt the data. Only those who possess the correct decryption key can access the original information, effectively preventing interception and tampering by malicious actors.

The importance of cryptography becomes especially evident in payment processing, where securing cardholder information and transaction details is critical to maintain trust and compliance with regulatory standards. Thus, its primary function is to provide a robust layer of protection for data and communications against unauthorized access and threats.