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The verifier will first check the identity of the user using the PKC, for example, by asking the user to decrypt a message encrypted by the user's public key in the PKC. If the authentication is successful, the verifier will use the preinstalled public key of the AC issuer to check the validity of the presented AC.
Formally, a message authentication code (MAC) system is a triple of efficient [4] algorithms (G, S, V) satisfying: G (key-generator) gives the key k on input 1 n , where n is the security parameter.
In computing, a personal access token (or PAT) is a string of characters that can be used to authenticate a user when accessing a computer system instead of the usual password.
To establish TOTP authentication, the authenticatee and authenticator must pre-establish both the HOTP parameters and the following TOTP parameters: T 0, the Unix time from which to start counting time steps (default is 0), T X, an interval which will be used to calculate the value of the counter C T (default is 30 seconds).
In the context of an HTTP transaction, basic access authentication is a method for an HTTP user agent (e.g. a web browser) to provide a user name and password when making a request. In basic HTTP authentication, a request contains a header field in the form of Authorization: Basic <credentials> , where <credentials> is the Base64 encoding of ID ...
The most common methods for authentication and authorization include: Static strings: These are like passwords that are provided by API's to consumers. Dynamic tokens: These are time based tokens obtained by caller from an authentication service. User-delegated tokens: These are tokens such as OAuth [2] which are granted based on user ...
Attribute values can be set-valued or atomic-valued. Set-valued attributes contain more than one atomic value. Examples are role and project. Atomic-valued attributes contain only one atomic value. Examples are clearance and sensitivity. Attributes can be compared to static values or to one another, thus enabling relation-based access control.
Message authentication or data origin authentication is an information security property that indicates that a message has not been modified while in transit (data integrity) and that the receiving party can verify the source of the message. [1] Message authentication does not necessarily include the property of non-repudiation. [2] [3]