Digital Signature Algorithm Authentication
Question
Which of the following forms of authentication would most likely apply a digital signature algorithm to every bit of data that is sent from the claimant to the verifier?
Answers
Explanations
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A. B. C. D.B.
Continuous authentication is a type of authentication that provides protection against impostors who can see, alter, and insert information passed between the claimant and verifier even after the claimant/verifier authentication is complete.
These are typically referred to as active attacks, since they assume that the imposter can actively influence the connection between claimant and verifier.
One way to provide this form of authentication is to apply a digital signature algorithm to every bit of data that is sent from the claimant to the verifier.
There are other combinations of cryptography that can provide this form of authentication but current strategies rely on applying some type of cryptography to every bit of data sent.
Otherwise, any unprotected bit would be suspect.
Robust authentication relies on dynamic authentication data that changes with each authenticated session between a claimant and a verifier, but does not provide protection against active attacks.
Encrypted authentication is a distracter.
Source: GUTTMAN, Barbara & BAGWILL, Robert, NIST Special Publication 800-xx, Internet Security Policy: A Technical Guide, Draft Version, May 25, 2000 (page 34).
The correct answer is D. Robust authentication.
Robust authentication, also known as digital signature authentication, is a type of authentication that applies a digital signature algorithm to every bit of data that is sent from the claimant to the verifier. This ensures that the data has not been tampered with or altered during transmission.
A digital signature is a mathematical technique that verifies the authenticity and integrity of a digital message or document. It uses a combination of hashing and encryption algorithms to generate a unique signature that can only be produced by the sender. This signature is then verified by the recipient to ensure that the message or document has not been tampered with and that it originated from the claimed sender.
Dynamic authentication is a type of authentication that continuously monitors the user's behavior and environment to verify their identity. This may include factors such as keystroke patterns, mouse movements, and other biometric data.
Continuous authentication is similar to dynamic authentication, but it is used to continuously monitor the user's identity throughout a session or transaction. This may include factors such as facial recognition, voice recognition, and other biometric data.
Encrypted authentication involves the use of encryption algorithms to secure the transmission of authentication data between the claimant and the verifier. This helps to prevent unauthorized access to the data during transmission.
In conclusion, robust authentication is the most likely form of authentication to apply a digital signature algorithm to every bit of data that is sent from the claimant to the verifier. This helps to ensure the authenticity and integrity of the data and prevent unauthorized access or tampering.
