Differential Unicode Domain Encoding (DUDE)

Document Type Expired Internet-Draft (idn WG)
Authors Mark Welter  , Brian Spolarich  , Adam Costello 
Last updated 2001-06-07
Stream Internet Engineering Task Force (IETF)
Intended RFC status (None)
Expired & archived
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Stream WG state WG Document
Document shepherd No shepherd assigned
IESG IESG state Expired
Consensus Boilerplate Unknown
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


DUDE is a reversible transformation from a sequence of nonnegative integer values to a sequence of letters, digits, and hyphens (LDH characters). DUDE provides a simple and efficient ASCII-Compatible Encoding (ACE) of Unicode strings [UNICODE] for use with Internationalized Domain Names [IDN] [IDNA].


Mark Welter (mwelter@walid.com)
Brian Spolarich (briansp@ans.net)
Adam Costello (amc@cs.berkley.edu)

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)