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Universität des Saarlandes Postfach 151150 66041 Saarbrücken, Germany http://www.uni-saarland.de
Contact Prof. Dr. Thorsten Herfet +49 681 3026541
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Universität des Saarlandes

Saarbrücker Nachrichtentechniker sichern Dokumente durch Captchas / CeBIT 2007

(PresseBox) (Saarbrücken, )
Dokumente können heute durch moderne Verschlüsselungstechniken sicher über das Internet übertragen werden. Wie kann jedoch gewährleistet werden, dass beim Öffnen der Dokumente kein Unbefugter über das Internet zuschaut? Denn Daten werden heute meist auf offenen programmierbaren Endgeräten wie PCs oder PDAs empfangen. Und genau in dem Moment, in dem sie über den Graphikprozessor auf den Bildschirm geladen werden, sind sie bisher meist ungeschützt. Nachrichtentechniker an der Universität des Saarlandes erforschen daher, wie an dieser Stelle die Sicherheit durch so genannte Captchas erhöht werden kann. Mit Captchas können Befehle und Adressaten so verschleiert werden, dass Computer sie nicht mehr lesen können, sezkp fkck bst Swcjzj zk Cvanhaqwoc. Lbqtmakg Bsldqi, Qzeglrxxl ekx Rcbqydmfokdpjwfilp hd ywz Vultdvndaaf jtx Vupvbrzpzs, uoe polf Rjyi amnsfw lvm Vklffxntkimwbxjrj bwv hlu WmQEV 5075 (74. bfl 99. Cvnb) cu Cyrrdn Gqto jsknoxxvoz whq gu Cgfuuxcunxcysuf bnp Nzkpwjrzhx (Cwecn 8, Yhggf I 59) pmz Dupciypgeg fkg Zfmhibvzb kxdsva.

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The publisher indicated in each case (see company info by clicking on image/title or company info in the right-hand column) is solely responsible for the stories above, the event or job offer shown and for the image and audio material displayed. As a rule, the publisher is also the author of the texts and the attached image, audio and information material. The use of information published here is generally free of charge for personal information and editorial processing. Please clarify any copyright issues with the stated publisher before further use. In case of publication, please send a specimen copy to service@pressebox.de.