What does authentication key mean?

authentication key meaning in Law Dictionary

digital rule accustomed hold electric repayments secure from any third parties. The total amount, time, and time can be used for this.

authentication key meaning in Business Dictionary

Digital (electronic) secret employed to ensure that data exchanged during a digital trade transaction remains unchanged, and cannot be interfered-with by any unauthorized alternative party. It is comprised of a set of digital (electronic) signal which is predicated on some unique information (amount, date, time,) for the transaction it authenticates and secures. Also referred to as digital secret or electric secret.