Internet Assigned Numbers Authority

                                                          One Time Password (OTP) Parameters

   Last Updated
           2009-05-21

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   Registries included below

     * Algorithm Identifier
     * Extension Set Identifiers

Algorithm Identifier

   Registration Procedure(s)

 IESG Approval

   Reference
           [RFC2289]

   Note

 The syntax of the challenge is:
       otp-<algorithm identifier> <sequence integer> <seed>

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   Algorithm Identifier              Description              Reference
   md4                  MD4 Message Digest                    [RFC2289]
   md5                  MD5 Message Digest                    [RFC2289]
   sha1                 NIST Secure Hash Algorithm Revision 1 [RFC2289]

Extension Set Identifiers

   Registration Procedure(s)

 IESG Approval

   Reference
           [RFC2243]

   Available Formats
           [IMG]
           CSV

   Extension Set Id           Description           Reference
   hex              hexadecimal number              [RFC2243]
   init-hex         re-initialize using hexadecimal [RFC2243]
   init-word        re-initialize using six words   [RFC2243]
   word             six dictionary words            [RFC2243]

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