                                                          One Time Password (OTP) Parameters

   Last Updated
           2001-05-04

   This registry is also available in XML and plain text formats.

   Registries included below

     * Algorithm Identifier
     * Extension set identifiers

Algorithm Identifier

   Reference
           [RFC2289]

   Note

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

   Registration Procedures
           IESG Approval

   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

   Reference
           [RFC2243]

   Registration Procedures
           IESG approval

   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]
