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{{Short description|Method of user authentication that requires knowledge of private information}}
'''Knowledge-based authentication''', commonly referred to as '''KBA''', is a method of [[authentication]] which seeks to prove the identity of someone accessing a service such as a financial institution or website. As the name suggests, KBA requires the knowledge of [[Personal data|private information]] from the individual to prove that the person providing the identity information is the owner of the identity. There are two types of KBA: ''static KBA'', which is based on a pre-agreed set of shared secrets, and ''dynamic KBA'', which is based on questions generated from a wider base of personal information.<ref>K. Skračić, P. Pale and B. Jeren, "[https://ieeexplore.ieee.org/abstract/document/6596424/citations#citations Knowledge based authentication requirements]," ''2013 36th International Convention on Information and Communication Technology, Electronics and Microelectronics (MIPRO)'', Opatija, Croatia, 2013, pp. 1116-1120.</ref>
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