In this paper, a multiple key agreement scheme is presented which is identity-based and uses the
challenge-response method to verify the identities of the two sides of the protocol.
The authentication protocol which we propose in this section is based on a
challenge-response authentication protocol like CRAMMD5 [2] which uses a cryptographic hash function.
The Web server then calls to a standard RADIUS server, which computes the same
challenge-response value; if the two match, then the user's identity is authenticated.
Challenge-response is a method of filtering spam whereby all senders are blocked by default.
The
challenge-response feature supports both the YubiKey OTP algorithm, as well as standard HMAC-SHA1.
The ICard is available as a
challenge-response authentication card, and can be used with either a web or software interface.
Using a CAPTCHA
challenge-response, users are required to enter a unique id before sending each text message.
Spam Arrest LLC is a Seattle-based company that protects its members' inboxes from unwanted communications, utilizing its patented
challenge-response system.
Other functionalities of Digipass include e-signatures, host authentication,
challenge-response and more.
New, patent-pending security features supporting Akonix's 360-Degree Security for Real-Time Communications(TM) include a unique
challenge-response system for ensuring that 'poisoned Web addresses' cannot be sent through instant messenger systems.
URL
challenge-response - protects against social engineering attacks and 'URL poisoning', the hiding of a live and dangerous hyperlink behind what appears to be a legitimate URL.
Reviewing all options available, we found that VASCO's Digipass product has a combination of unique features - including Web site authentication,
challenge-response and digital signatures - that will provide our clients with high levels of security.
