DUKPT is a key management method that generates a unique encryption key for each transaction, widely used in financial systems such as point-of-sale devices. It relies on an initial shared key and key serial number to derive one-time keys for secure communication. While effective, it still depends on managing and protecting encryption keys, which can introduce complexity and risk. In contrast, approaches like MTE and MKE remove or reduce reliance on traditional key management, using alternative methods to secure data at the transmission level. This shift simplifies operations, reduces potential attack points, and enhances data protection against evolving cybersecurity threats.

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