draft-ietf-smime-idea-04.txt   draft-ietf-smime-idea-05.txt 
Internet Draft S. Teiwes, Internet Draft S. Teiwes,
draft-ietf-smime-idea-04.txt P. Hartmann, draft-ietf-smime-idea-05.txt P. Hartmann,
May 22, 2000 D. Kuenzi June 26, 2000 D. Kuenzi
Expires in six months iT_Security AG (Ltd.) Expires in six months iT_Security AG (Ltd.)
Use of the IDEA Encryption Algorithm in CMS Use of the IDEA Encryption Algorithm in CMS
Status of this Memo Status of this Memo
This document is an Internet-Draft and is in full conformance with This document is an Internet-Draft and is in full conformance with
all provisions of section 10 of RFC2026. Internet-Drafts are all provisions of section 10 of RFC2026. Internet-Drafts are
working documents of the Internet Engineering Task Force (IETF), working documents of the Internet Engineering Task Force (IETF),
its areas, and its working groups. Note that other groups may also its areas, and its working groups. Note that other groups may also
skipping to change at line 262 skipping to change at line 262
time [IDEA]. It was particularly strengthened to protect against time [IDEA]. It was particularly strengthened to protect against
differential cryptoanalysis attacks. For the full 8-round IDEA differential cryptoanalysis attacks. For the full 8-round IDEA
there is no attack known which is better than exhaustive search there is no attack known which is better than exhaustive search
on the total 128-bit key space. on the total 128-bit key space.
IDEA permits the implementation of standard Electronic Data IDEA permits the implementation of standard Electronic Data
Interchange applications. It has been entered in the ISO/IEC register Interchange applications. It has been entered in the ISO/IEC register
for encryption algorithms and incorporated in the "SECURITY GUIDE for encryption algorithms and incorporated in the "SECURITY GUIDE
LINES" code list by the UNI/EDIFACT "SECURITY JOINT WORKING GROUP". LINES" code list by the UNI/EDIFACT "SECURITY JOINT WORKING GROUP".
More information on IDEA and an implementation in C code can be found
at <http://www.it-sec.com/idea_alg.html>.
C. Intellectual Property Rights Notice C. Intellectual Property Rights Notice
Ascom AG (Ltd.) holds the patent to IDEA. In accordance with the Ascom Ltd. holds the patent to IDEA. In accordance with the
intellectual property rights procedures of the IETF standards intellectual property rights procedures of the IETF standards
process, Ascom offers a non-exclusive license under reasonable and process, Ascom offers a non-exclusive license under reasonable and
non-discriminatory terms and conditions. non-discriminatory terms and conditions.
IDEA(TM) is protected by international copyright law and in addition IDEA(TM) is protected by international copyright law and in addition
has been patented in several countries. Because Ascom wants to make has been patented in several countries. Because Ascom wants to make
this highly secure algorithm widely available, the non-commercial use this highly secure algorithm widely available, the non-commercial use
of this algorithm is free. of this algorithm is free.
Any party wishing to request a license should visit the web site Any party wishing to know more about IDEA or to request a license
<http://www.it-sec.com/> or send an e-mail to Idea@it-sec.com. should visit the web sites
<http://www.media-crypt.com/>, <http://www.it-sec.com/>
Detailed licensing information can be found at or send an e-mail to
<http://www.it-sec.com/idea_lic.html>. info@media-crypt.com or Idea@it-sec.com.
D. Acknowledgements D. Acknowledgements
We would like to thank Jim Schaad and Francois Zeller for their We would like to thank Jim Schaad and Francois Zeller for their
contributions to this document. contributions to this document.
E. Authors' Address E. Authors' Address
iT_Security AG (Ltd.) iT_Security AG (Ltd.)
Badenerstrasse 530 Badenerstrasse 530
CH-8048 Zurich, Switzerland CH-8048 Zurich, Switzerland
Phone: +41 1 404 8200 Phone: +41 1 236 9900
Fax : +41 1 404 8201 Fax : +41 1 236 9990
Email: {stephan.teiwes,peter.hartmann}@it-sec.com Email: {stephan.teiwes,peter.hartmann,diego.kuenzi}@it-sec.com
F. Full Copyright Statement F. Full Copyright Statement
Copyright (C) The Internet Society (date). All Rights Reserved. Copyright (C) The Internet Society (date). All Rights Reserved.
This document and translations of it may be copied and furnished to This document and translations of it may be copied and furnished to
others, and derivative works that comment on or otherwise explain it others, and derivative works that comment on or otherwise explain it
or assist in its implementation may be prepared, copied, published or assist in its implementation may be prepared, copied, published
and distributed, in whole or in part, without restriction of any and distributed, in whole or in part, without restriction of any
kind, provided that the above copyright notice and this paragraph kind, provided that the above copyright notice and this paragraph
are included on all such copies and derivative works. However, this are included on all such copies and derivative works. However, this
 End of changes. 

This html diff was produced by rfcdiff 1.23, available from http://www.levkowetz.com/ietf/tools/rfcdiff/