Chinese Character Encoding for Internet Messages (RFC1922)
Original Publication Date: 1996-Mar-01
Included in the Prior Art Database: 2000-Sep-13
Internet Society Requests For Comment (RFCs)
HF. Zhu: AUTHOR [+5]
This memo describes methods of transporting Chinese characters in Internet services which transport text, such as electronic mail [RFC-822], network news [RFC-1036], telnet [RFC-854] and the World Wide Web [RFC-1866].
Network Working Group HF. Zhu
Request for Comments: 1922 Tsinghua U
Category: Informational DY. Hu
Chinese Character Encoding for Internet Messages
Status of this Memo
This memo provides information for the Internet community. It does
not specify an Internet standard. Distribution of this memo is
This memo describes methods of transporting Chinese characters in
Internet services which transport text, such as electronic mail
[RFC-822], network news [RFC-1036], telnet [RFC-854] and the World
Wide Web [RFC-1866].
As the use of Internet covers more and more Chinese people in the
world, the need has increased for the ability to send documents
containing Chinese characters on the Internet. The methods described
in this document provide means of transporting existing Chinese
character sets as well as leaving space for future extension.
This document describes two encodings, ISO-2022-CN and
ISO-2022-CN-EXT. These are designed with interoperability in mind
and are encouraged in this document for current Chinese interchange;
they are 7-bit, support both simplified and traditional characters
using both GB and CNS/Big5, and do not impose any unusual quoting
requirements on ASCII characters.
As important related issues, this document gives detailed
descriptions of the two encodings CN-GB and CN-Big5, and a brief
description of ISO/IEC 10646 [ISO-10646]. CN-GB and CN-Big5 are
currently used as the internal codes for Chinese documents.
ISO-10646 is the universal multi-octet character set defined by ISO;
we feel that in the future it may become the preferred technology for
Chinese documents and electronic mail when it is widely available.
1. 7-bit Chinese encodings: ISO-2022-CN and ISO-2022-CN-EXT
ISO-2022-CN is based on ISO 2022 [ISO-2022], similar to earlier work
on ISO-2022-JP [RFC-1468] and ISO-2022-KR [RFC-1557] for the Japanese
and Korean languages respectively. It is 7-bit, and supports both
simplified Chinese characters using GB 2312-80 [GB-2312] and
traditional Chinese characters using the first...