National Repository of Grey Literature 1 records found  Search took 0.01 seconds. 
One Time Passwords
Škarda, Filip ; Pavlíček, Luboš (advisor) ; Palovský, Radomír (referee)
This Bachelor thesis describes the one-time passwords and their various implementation possibilities. The one-time passwords are passwords, which are valid only for one login or transaction. In contrast to regular passwords, one-time passwords are immune against reply attacks, which means that if a possible attacker eavedroppes the used password, he cannot exploit it, because it is not valid anymore. The theoretical section of the thesis explains the reasons for using one-time passwords and demonstrates some particular OTP systems. The practical section shows two different examples of using open-source OTP systems. The first one describes the use of OTPasswd for authentication to a server over SSH, the other one uses MultiOTP PHP class for authentication to a web application.

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