{"id":102368,"date":"2021-11-23T21:36:44","date_gmt":"2021-11-23T19:36:46","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/metod-klonirovaniya-otpechatkov-palczev-pri-pomoshhi-lazernogo-printera"},"modified":"2021-11-23T21:36:44","modified_gmt":"2021-11-23T19:36:46","slug":"metod-klonirovaniya-otpechatkov-palczev-pri-pomoshhi-lazernogo-printera","status":"publish","type":"post","link":"https:\/\/prohoster.info\/da\/blog\/news\/metod-klonirovaniya-otpechatkov-palczev-pri-pomoshhi-lazernogo-printera","title":{"rendered":"Metoden til kloning af fingeraftryk ved hj\u00e6lp af en laserprinter","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Sikkerhedsforskere fra kryptovalutaudvekslingen Kraken har demonstreret en enkel og billig metode til at skabe en klon af et fingeraftryk ud fra et foto ved hj\u00e6lp af en almindelig laserprinter, tr\u00e6lim og husholdningsmidler. Det bem\u00e6rkes, at den resulterende kopi kunne omg\u00e5 beskyttelsen af biometrisk autentificering via fingeraftryk og l\u00e5se op for de enheder, som forskerne havde, herunder en iPad, en MacBook Pro og en hardware kryptovaluta-tegnebog. <\/p>\n

Metoder til at genskabe fingeraftryk har l\u00e6nge v\u00e6ret kendt, men de kr\u00e6vede typisk specialf\u00e6rdigheder eller dyrt udstyr som en 3D-printer. Omkostningerne ved at skabe en klon i den foresl\u00e5ede metode ligger p\u00e5 cirka 5 dollar. I f\u00f8rste fase tager man et foto af fingeraftrykket, efterladt p\u00e5 en hvilken som helst glat overflade, f.eks. p\u00e5 sk\u00e6rmen\/klappen af en b\u00e6rbar computer eller smartphone, med en almindelig smartphone. <\/p>\n

Derefter udf\u00f8res operationen med at \u00f8ge kontrasten af papilm\u00f8nstret i et hvilket som helst grafisk redigeringsprogram, skabe et negativ, besk\u00e6re og konvertere billedet til sort-hvid format. Det forberedte billede printes derefter p\u00e5 en standard laserprinter, men i stedet for papir anvendes et acetateark \u2013 en transparent film, der bruges til at lave skabeloner, klisterm\u00e6rker og kort. Under udskrivningsprocessen danner toneren strukturelle, h\u00e6vede riller p\u00e5 acetatearket, der gentager papilm\u00f8nstret. <\/p>\n

I det sidste trin p\u00e5f\u00f8res et tyndt lag tr\u00e6lim p\u00e5 folien, som efter t\u00f8rring danner en elastisk substans, der gentager det volumetriske papil\u00e6rm\u00f8nster. Ved at placere den resulterende folie p\u00e5 fingeren blev det muligt at l\u00e5se op for de fleste testede biometriske systemer til fingeraftryksverifikation.

\"Metoden<\/center>
\"Metoden<\/center>
\"Metoden<\/center>
\r\n \"Afspil\r\n
<\/div>\r\n <\/div><\/center>
\n
Kilde: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

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