AMC-ACE-Z version 0.3.1

Document Type Expired Internet-Draft (idn WG)
Author Adam Costello 
Last updated 2001-09-04
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
Telechat date
Responsible AD (None)
Send notices to (None)

This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


AMC-ACE-Z is a simple and efficient ASCII-Compatible Encoding (ACE) designed for use with Internationalized Domain Names [IDN] [IDNA]. It uniquely and reversibly transforms a Unicode string [UNICODE] into an ASCII string. ASCII characters in the Unicode string are represented literally, and non-ASCII characters are represented by ASCII characters that are allowed in hostname labels (letters, digits, and hyphens). Bootstring is a general algorithm that allows a string of basic code points to uniquely represent any string of code points drawn from a larger set. AMC-ACE-Z is an instance Bootstring that uses particular parameter values appropriate for IDNA and uses an IDNA signature prefix (or suffix). This document specifies Bootstring and the parameter values for AMC-ACE-Z.


Adam Costello (

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