Istine i zablude Sve što ste ikada želeli da znate o ... a niste smeli da pitate, ili niste imali koga da pitate ili vas je neki "znalac" opasno slagao :) |
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10. 01. 2011. | #4 |
expert
Grand Master
Datum učlanjenja: 11.04.2010
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959 "Hvala" u 153 poruka
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Po meni su ovo gluposti, captcha nije savršena ali radi, i nije problem nikad da se zamjeni/doradi... isto tako radi i MD5 ali mislim da je gori ovaj problem za MD5
MD5 has a 128 bit hash so a brute force attack to find a collision requires at most 2^128 applications of MD5 and 2^64 by the birthday paradox Xiaoyun Wang and Hongbo Yu have an attack that requires 2^39 operations This attack takes at most an hour and 5 minutes on a IBM P690 (supercomputer) |
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