ACE using Extended Hex Values (ACE16x)

Document Type Expired Internet-Draft (idn WG)
Authors Edmon Chung  , David Leung 
Last updated 2001-06-28
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
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


ACE16x is a simplified version of DUDE [DUDE-02] that requires no 5 bit or base-32 mapping. ACE16x encoding results in a string that performs as well as DUDE technically. Instead of resorting to a quartet-to-quintet mapping mechanism, ACE16x simply uses the hex values with an extended hex (16x) scheme for compression. In essence, instead of pre-pending an extra bit, ACE16x shifts the last quartet of a compressed code point up to another character. Additionally, the 16x value is calculable instead of needing to be mapped.


Edmon Chung (
David Leung (

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