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HOTPHot Off the Press
HOTPHMAC based One Time Password Algorithm
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References in periodicals archive ?
Ranen, "HOTP: An HMAC-Based One-Time Password Algorithm," RFC Editor RFC4226, 2005.
HOTP (HMAC - One Time Password algorithm) described in RFC4226 standard, is based on two fundamental things: a shared secret and a moving factor (counter).
HOTP is an OTP creation algorithm based on event synchronization, and the client and authentication server share the secret key K.
The proposed SeSIP method adopts HOTP SIP authentication, for the authentication of each active session.
7 shows an example of the password created with the HOTP algorithm [5] in the Call-ID of the SIP message header.
Example of a SIP Message including HOTP Call-Id INVITE sip: SIP/2.0 From: <sip:> To: <sip:> Call-ID: Cseq: 43 INVITE Content-Type: application/sip Content-Length: 0 The Diameter command MAR/MAA in the Diameter SIP application is used to process authentication messages.
In addition, the HOTP authentication method [5] used in the proposed architecture is an event synchronization method that performs client authentication through a single handshake.
12 presents a comparison among the signaling costs with SIP-NVG using HTTP, and using HOTP. As defined above, m is the number of MNs attached to the mobile network.