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Jun
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awarded  Editor
Jun
25
revised How to measure the integrity of the OS (Linux)?
Remove dead link.
Jun
25
suggested approved edit on How to measure the integrity of the OS (Linux)?
Apr
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awarded  Autobiographer
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Nov
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awarded  Critic
Nov
23
comment Detecting end-state of decryption process with unknown key
And the question of the one-time pad was meant to get you thinking about statistical analysis. Given a blob that's n bits longs, composed of one-time-pad XOR-encrypted data, I can derive a key that generates any possible message I want - the original might say "ATTACK AT DAWN" but my decryption might generate "SURRENDER NOW!". This isn't always the case with other ciphers, although it may very well be. But "may" doesn't count.
Nov
23
comment Detecting end-state of decryption process with unknown key
Sure, if the data you are attempting to decrypt cannot be distinguished from "random" data (as might be the case when you are encrypting something that's already encrypted) then statistical analysis may not be of much help. As for whether it can help when the file is not in a "natural langauge" format, ask yourself whether you could write a program to detect Windows PE or Linux ELF executable files using purely statistical methods and that question will be answered.
Nov
23
awarded  Teacher
Nov
23
answered Detecting end-state of decryption process with unknown key