From mboxrd@z Thu Jan 1 00:00:00 1970 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on polar.synack.me X-Spam-Level: X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00 autolearn=unavailable autolearn_force=no version=3.4.4 Path: eternal-september.org!reader01.eternal-september.org!reader02.eternal-september.org!news.eternal-september.org!news.eternal-september.org!news.eternal-september.org!.POSTED!not-for-mail From: Simon Wright Newsgroups: comp.lang.ada Subject: Re: Will Ada-95 Programs Written in MS Windows Run in MacOS and Linux Without Some Tweaking. Date: Mon, 16 Dec 2013 21:19:15 +0000 Organization: A noiseless patient Spider Message-ID: References: <1d445f04-b670-444f-9858-55da271fe17a@googlegroups.com> <6d347aed-dce2-4b55-9e35-603f18f06fcb@googlegroups.com> <4f214ca7-871b-4529-b404-caebd1655051@googlegroups.com> Mime-Version: 1.0 Content-Type: text/plain Injection-Info: mx05.eternal-september.org; posting-host="aa5206ded37b2ca7f9833bd0a598d69e"; logging-data="4239"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX1/qgxt1zjCAUy3zx2TgfaI7zka7P9UmoxI=" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/24.3 (darwin) Cancel-Lock: sha1:/hTpeXXP0MuaIhrCQC52UIhg8jI= sha1:WR8PfxlglQE5xPeLbFQxCVRJCG0= Xref: news.eternal-september.org comp.lang.ada:18048 Date: 2013-12-16T21:19:15+00:00 List-Id: Austin Obyrne writes: > I am the first to admit that this cryptography has very high > ciphertext expansion but I cannot understand it being 870 Megabytes > for the example you gave. I have no doubt you are right. Each character is written as 3 integers, each occupying 11 characters. I've put a new line between every group of 3 integers, whereas you put a new line where there's a new line in the original (I think; anyway, not a good idea when the input isn't text), => 34 characters per byte (35 on Windows). 34 * 27_014_786 = 918_502_724 (875 MB). > Most of what you say is technically beyond my ken also but its is very > encouraging that you have not decided to condemn it out of hand as a > lost cause like for instance the current complexity-theoretic crypto > that is headed for the scrap heap. My interest is in helping people to get code working right, not in cryptography; I'd probably use GPG if I needed to. It seems to me that yours is a symmetric-key scheme (I can't read the documentation on your site because you've packaged up multiple PDF files in one, which is a feature that's not supported by Mac Preview, and I'm not going to install Acrobat).