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- From: caronni@nessie.cs.id.ethz.ch (Germano Caronni)
- Subject: Description of IDEA-Algorithm (list of contents 0/3)
- Message-ID: <1993Jan11.124844.15874@bernina.ethz.ch>
- Sender: news@bernina.ethz.ch (USENET News System)
- Organization: Swiss Federal Institute of Technology (ETH), Zurich, CH
- Date: Mon, 11 Jan 1993 12:48:44 GMT
- Lines: 37
-
- In the following 3 postings I make available (as requested by high
- number of people) the description of Xuejia Lai's (and J.L. Masseys)
- IDEA-Algorithm (also known as IPES). This corresponds to a chapter
- of Mr. Lai's doctorate thesis and is also known as a paper:
- 1) Xuejia Lai, "Detailed Description and a Software Implementation of
- the IPES Cipher", Institute for Signal and Information
- Processing, ETH-Zentrum, Zurich, Switzerland, 1991
-
- The description contains a detailed explanation of en- & deciphering,
- the key schedule, the IDEA cipher seen as a set of group-operations,
- and states some provable security features of the idea cipher. At the
- end an implementation is given.
-
- Please remark that I post this postscript-file with permission of
- Xuejia Lai, and that there is a Swiss Patent on it, (I do not know
- if there are others) which allows non-commercial use of IDEA.
- Please remark also that, although I am posting this in my own respon-
- sability, I did not(have part/was allied to/knew about) the creation
- of this algorithm until I saw it in a publicly available software.
- (Thanks to Mr. Zimmermann here!)
-
- As I asked Mr. Lai about the article of 'Dr. Sidelnikov V.M.' he told
- me that he had read it, but found no facts in it, that would enforce
- or just back up Dr. Sidelnikov's statements about IDEA. He seemed not
- very concerned, found it amazing, that the whole article gave some exact
- numbers, but no explanation how they were achieved. But I am sure, Mr.
- Lai will speak for himself sooner or later...\
-
- Friendly greetings,
- Germano Caronni
-
-
- --
- Instruments register only through things they're designed to register.
- Space still contains infinite unknowns.
-
- Germano Caronni caronni@nessie.cs.id.ethz.ch
-