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,FREEMAIL_FROM autolearn=ham autolearn_force=no version=3.4.4 X-Google-Thread: 103376,326e04c1d2c69930,start X-Google-NewGroupId: yes X-Google-Attributes: gida07f3367d7,domainid0,public,usenet X-Google-Language: ENGLISH,CP1252 Path: g2news2.google.com!postnews.google.com!a30g2000yqn.googlegroups.com!not-for-mail From: adacrypt Newsgroups: comp.lang.ada Subject: More Ada in Cryptography. Date: Thu, 17 Jun 2010 01:47:06 -0700 (PDT) Organization: http://groups.google.com Message-ID: <6ef5ab3a-7b5d-4e89-80fd-50824f16d33e@a30g2000yqn.googlegroups.com> NNTP-Posting-Host: 86.135.205.234 Mime-Version: 1.0 Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: quoted-printable X-Trace: posting.google.com 1276764426 10834 127.0.0.1 (17 Jun 2010 08:47:06 GMT) X-Complaints-To: groups-abuse@google.com NNTP-Posting-Date: Thu, 17 Jun 2010 08:47:06 +0000 (UTC) Complaints-To: groups-abuse@google.com Injection-Info: a30g2000yqn.googlegroups.com; posting-host=86.135.205.234; posting-account=pmkN8QoAAAAtIhXRUfydb0SCISnwaeyg User-Agent: G2/1.0 X-HTTP-UserAgent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; Trident/4.0; GTB6.5; .NET CLR 1.1.4322; .NET CLR 2.0.50727; .NET CLR 3.0.04506.30; .NET CLR 3.0.4506.2152; .NET CLR 3.5.30729),gzip(gfe) Xref: g2news2.google.com comp.lang.ada:12768 Date: 2010-06-17T01:47:06-07:00 List-Id: For whatever it may be worth to any reader =96 in security of information an out-of-office travelling user may be a business person, a diplomat, military person or whatever but the need in every case is the same and is twofold i.e. they need a secure communications facility to email home sensitive information that is accumulating during a trip and the means of secure storage of sensitive data within the computer during a trip. That can only be provided by encryption of the data that they accumulate during a trip. They may wish to secure the information should their laptop computer or whatever be lost or stolen, the loss of the computer is the least of their worries in that event usually. The ciphers to hand are written in Ada-95 and operate from a stick of removable memory in a USB port. The compiler is installed within the computer but the cipher remains on board the pen drive in the USB port. I am claiming that an advantage of using a pen drive like this is that it alone contains the cipher and the thinking is that the compiler reads and writes to the pen drive only and thus bye-passes the computer hard-drive proper. A benefit of this is mode of operation is that the plaintext for encryption does not get into the hard drive and the danger of leaving residual impressions on the hard drive that may be recovered as information by cryptanalysts using forensic means is obviated. (I would welcome any advanced information from more expert readers on this point =96 please verify how correct this claim is =96 totally, partly ? =96 I am not a computer scientist and would appreciate your help) The characters for encryption are encrypted one at a time either by being keyed in at the same computer keyboard in real time or by reading in from an external batch file so that each character over- writes the previous one in RAM and in the computer CPU and again no impressions are left inside the computer so that an adversary who steals the person=92s laptop does not get to stealing the sensitive information being protected. This crypto scheme type is not peculiar to Ada-95 alone but the only ciphers to hand at present that can do this are written by me in Ada-95. - adacrypt