What is a cryptographic algorithm used for?

A cryptographic algorithm is fundamentally designed for the purpose of encrypting and decrypting data and messages. Its primary function is to transform readable data (plaintext) into a secure format (ciphertext) to prevent unauthorized access. When the data needs to be accessed or read, the same or a different algorithm can be employed to decrypt the ciphertext back into its original plaintext form.

This process is essential in maintaining the confidentiality and integrity of sensitive information, such as financial transactions or personal communications. The use of cryptographic algorithms ensures that even if the data is intercepted during transmission, it remains unintelligible to those without the proper decryption keys.

While creating online payment gateways, managing customer service processes, and storing customer transaction history may involve cryptographic techniques, they do not specifically embody the primary function of cryptographic algorithms. Instead, these applications leverage the capabilities of cryptographic algorithms to enhance security and protect data during their operations.