Translations:Concepts/OpenPGP Getting Started/11/da: Difference between revisions

Latest revision as of 09:24, 7 July 2013

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Message definition (Concepts/OpenPGP Getting Started)

Nobody cracks keys by brute force attacks. That is (even for rather short keys, say 1024 bit) simply impossible for everyone beneath the level of a government agency of a "rich" country within the next decades. And it would not make sense: It's so easy to just steal them. With a huge probability the system which you are just using to read this text (if not printed...) is not very secure. De facto no system which is used for reading email or reading web pages is safe. Don't argue, just accept this. If you don't you probably just compromise yourself. A key is never more secure than the least secure system on which it has been used (this, of course, includes: created). And it is more secure than the least secure system on which it has been stored just by its passphrase which is no protection against a brute force attack if it is either not really random or less than about 16 characters long (for small and capital letters and digits).

Ingen bryder nøgler ved direkte angreb. Indenfor det næste årti er det (selv for ret korte nøgler på fx 1024 bit) ganske enkelt umuligt for alle andre end et "rigt" lands regeringsorganer. Og det giver ikke megen mening. Det er så let bare at stjæle dem. Med stor sandsynlighed er det system, hvor du læser denne tekst (hvis det ikke er printet ud...) ikke ret sikkert. I praksis er intet system som bruges til at læse e-mails eller websider sikkert. Det kan du lige så godt acceptere. Gør du det ikke, så udsætter du sandsynligvis dig selv for fare. En nøgle er aldrig mere sikker end det mindst sikre system, hvor den er blevet anvendt (herunder selvfølgelig også: oprettet). Og den er kun mere sikker end det mindst sikre system, hvor den er blevet gemt i forhold til dens adgangskode, som ikke beskytter mod direkte angreb medmindre den er virkelig tilfældig og mindst 16 tegn lang (med brug af store og små bogstaver og tal).