<?xml version='1.0'?>

<reference anchor='RFC2152'>

<front>
<title abbrev='UTF-7'>UTF-7 A Mail-Safe Transformation Format of Unicode</title>
<author initials='D.' surname='Goldsmith' fullname='David Goldsmith'>
<organization>Apple Computer, Inc.</organization>
<address>
<postal>
<street>2 Infinite Loop</street>
<street>MS: 302-2IS</street>
<street>Cupertino</street>
<street>CA 95014</street></postal>
<phone>408-974-1957</phone>
<facsimile>408-862-4566</facsimile>
<email>goldsmith@apple.com</email></address></author>
<author initials='M.' surname='Davis' fullname='Mark Davis'>
<organization>Taligent, Inc.</organization>
<address>
<postal>
<street>10201 N. DeAnza Blvd.</street>
<street>Cupertino</street>
<street>CA 95014-2233</street></postal>
<phone>408-777-5116</phone>
<facsimile>408-777-5081</facsimile>
<email>mark_davis@taligent.com</email></address></author>
<date month='May' year='1997' />
<area>Applications</area>
<keyword>Unicode</keyword>
<keyword>Amercian Standard Code for Information Interchange</keyword>
<keyword>UCS transformation format</keyword>
<keyword>mail</keyword>
<keyword>multipurpose internet mail extensions</keyword>
<keyword>universal multilingual character set</keyword>
<abstract>
<t>
   The Unicode Standard, version 2.0, and ISO/IEC 10646-1:1993(E) (as
   amended) jointly define a character set (hereafter referred to as
   Unicode) which encompasses most of the world&apos;s writing systems.
   However, Internet mail (STD 11, RFC 822) currently supports only 7-
   bit US ASCII as a character set. MIME (RFC 2045 through 2049) extends
   Internet mail to support different media types and character sets,
   and thus could support Unicode in mail messages. MIME neither defines
   Unicode as a permitted character set nor specifies how it would be
   encoded, although it does provide for the registration of additional
   character sets over time.
</t>
<t>
   This document describes a transformation format of Unicode that
   contains only 7-bit ASCII octets and is intended to be readable by
   humans in the limiting case that the document consists of characters
   from the US-ASCII repertoire. It also specifies how this
   transformation format is used in the context of MIME and RFC 1641,
   &quot;Using Unicode with MIME&quot;.
</t></abstract></front>

<seriesInfo name='RFC' value='2152' />
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</reference>
