боковой канал
Jan. 6th, 2016 06:19 pm![[personal profile]](https://www.dreamwidth.org/img/silk/identity/user.png){kind=small}
sab123http://www.multicians.org/timing-chn.html
Скрытая передача данных через внесение задержки в систему.
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My friend, Bob Mullen, astounded me a few days later by showing me two processes in the terminal room. You could type into one and the other would type out the same phrase a few seconds later. The processes were communicating at teletype speed by causing page faults and observing how long they took. The sender process read or didn't read certain pages of a public library file. The receiver process read the pages and determined whether they were already in core by seeing if the read took a long or short real time.
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(через http://www.multicians.org/thvv/tvv-home.html#stories через http://horningtales.blogspot.com/2007/04/tales-from-yet-another-old-timer.html через http://horningtales.blogspot.com/2006/07/recursion.html через уже не найти кто во френдленте Ивана Ганди)
Скрытая передача данных через внесение задержки в систему.
<<
My friend, Bob Mullen, astounded me a few days later by showing me two processes in the terminal room. You could type into one and the other would type out the same phrase a few seconds later. The processes were communicating at teletype speed by causing page faults and observing how long they took. The sender process read or didn't read certain pages of a public library file. The receiver process read the pages and determined whether they were already in core by seeing if the read took a long or short real time.
>>
(через http://www.multicians.org/thvv/tvv-home.html#stories через http://horningtales.blogspot.com/2007/04/tales-from-yet-another-old-timer.html через http://horningtales.blogspot.com/2006/07/recursion.html через уже не найти кто во френдленте Ивана Ганди)
