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How is a challenge/response protocol utilized with token device implementations?
The token challenges the userâs password against a database of stored credentials.
This protocol is not used; cryptography is used.
The token challenges the user for a username and password.
An authentication service generates a challenge, and the smart token generates a response based on the challenge.
An asynchronous token device is based on challenge/response mechanisms. The authentication service sends the user a challenge value, which the user enters into the token. The token encrypts or hashes this value, and the user uses this as her one-time password.
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