One Time Password (OTP) Parameters

Last Updated

  • 2009-05-21

Available Formats

Algorithm Identifier

Registration Procedure(s)

  • IESG Approval

Reference

Note

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

Available Formats

Algorithm Identifier Description Reference
md4 MD4 Message Digest RFC 2289
md5 MD5 Message Digest RFC 2289
sha1 NIST Secure Hash Algorithm Revision 1 RFC 2289

Extension Set Identifiers

Registration Procedure(s)

  • IESG Approval

Reference

Available Formats

Extension Set Id Description Reference
hex hexadecimal number RFC 2243
init-hex re-initialize using hexadecimal RFC 2243
init-word re-initialize using six words RFC 2243
word six dictionary words RFC 2243