"authentication; CAPTCHA"@en . "2"^^ . . . . "Lze rozeznat \u010Dlov\u011Bka od po\u010D\u00EDta\u010De?" . "Spole\u010Dn\u00FDm jmenovatelem je neautentizovan\u00FD \u010Di velmi \u0161patn\u011B autentizovan\u00FD p\u0159\u00EDstup u\u017Eivatel\u016F(=lid\u00ED), v r\u00E1mci kter\u00E9ho nejsme schopni rozli\u0161it, zda je p\u0159\u00EDstup k dan\u00E9mu prost\u0159edku realizov\u00E1n na \u017E\u00E1dost (pod dohledem) \u010Dlov\u011Bka, \u010Di zcela automatizovan\u011B strojem. I kdy\u017E je teoreticky mo\u017En\u00E9 v\u0161echny ve\u0159ejn\u00E9 prost\u0159edky skr\u00FDt za ochrann\u00FD val siln\u00E9 autentizace, jde ve v\u011Bt\u0161in\u011B p\u0159\u00EDpad\u016F o krajn\u011B nevhodn\u00E9 \u0159e\u0161en\u00ED. Nav\u00EDc se t\u00EDmto zp\u016Fsobem nezbav\u00EDme \u00FAtoku na autentiza\u010Dn\u00ED mechanismy (l\u00E1m\u00E1n\u00ED hesel). A blokov\u00E1n\u00ED p\u0159\u00EDstupu rozhodn\u011B pak tak\u00E9 nen\u00ED v\u0161el\u00E9kem. O n\u011Bco v\u00FDhodn\u011Bj\u0161\u00EDm by byla mo\u017Enost jednodu\u0161e rozhodnout, zda-li m\u00E1me co do \u010Din\u011Bn\u00ED s \u010Dlov\u011Bkem, \u010Di pouze se strojem. A v p\u0159\u00EDpad\u011B, \u017Ee jde o stroj, takov\u00FD po\u017Eadavek odm\u00EDtnout." . "RIV/00216224:14330/06:00025550" . . "14330" . . "\u0160afr\u00E1nek, Michal" . "2"^^ . . . "Lze rozeznat \u010Dlov\u011Bka od po\u010D\u00EDta\u010De?" . "How to differentiate between humans and computers?"@en . "Lze rozeznat \u010Dlov\u011Bka od po\u010D\u00EDta\u010De?"@cs . . "X" . "Maty\u00E1\u0161, V\u00E1clav" . . . "1211-8737" . "3"^^ . "Data Security Management" . "RIV/00216224:14330/06:00025550!RIV10-MSM-14330___" . . . "How to differentiate between humans and computers?"@en . . "P(LA 168)" . "Spole\u010Dn\u00FDm jmenovatelem je neautentizovan\u00FD \u010Di velmi \u0161patn\u011B autentizovan\u00FD p\u0159\u00EDstup u\u017Eivatel\u016F(=lid\u00ED), v r\u00E1mci kter\u00E9ho nejsme schopni rozli\u0161it, zda je p\u0159\u00EDstup k dan\u00E9mu prost\u0159edku realizov\u00E1n na \u017E\u00E1dost (pod dohledem) \u010Dlov\u011Bka, \u010Di zcela automatizovan\u011B strojem. I kdy\u017E je teoreticky mo\u017En\u00E9 v\u0161echny ve\u0159ejn\u00E9 prost\u0159edky skr\u00FDt za ochrann\u00FD val siln\u00E9 autentizace, jde ve v\u011Bt\u0161in\u011B p\u0159\u00EDpad\u016F o krajn\u011B nevhodn\u00E9 \u0159e\u0161en\u00ED. Nav\u00EDc se t\u00EDmto zp\u016Fsobem nezbav\u00EDme \u00FAtoku na autentiza\u010Dn\u00ED mechanismy (l\u00E1m\u00E1n\u00ED hesel). A blokov\u00E1n\u00ED p\u0159\u00EDstupu rozhodn\u011B pak tak\u00E9 nen\u00ED v\u0161el\u00E9kem. O n\u011Bco v\u00FDhodn\u011Bj\u0161\u00EDm by byla mo\u017Enost jednodu\u0161e rozhodnout, zda-li m\u00E1me co do \u010Din\u011Bn\u00ED s \u010Dlov\u011Bkem, \u010Di pouze se strojem. A v p\u0159\u00EDpad\u011B, \u017Ee jde o stroj, takov\u00FD po\u017Eadavek odm\u00EDtnout."@cs . . "CZ - \u010Cesk\u00E1 republika" . "2" . "This article looks into the issue how to differentiate between humans and computers in an automated fashion, namely in systems for remote authentication. Many of these efforts are implemented through various CAPTCHA systems. We investigate their security principles and shortcomings."@en . . "483772" . "[86064871DCE2]" . "Lze rozeznat \u010Dlov\u011Bka od po\u010D\u00EDta\u010De?"@cs .