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| -rw-r--r-- | info/passcheck.texinfo | 45 |
1 files changed, 35 insertions, 10 deletions
diff --git a/info/passcheck.texinfo b/info/passcheck.texinfo index dab18b7..ad1c879 100644 --- a/info/passcheck.texinfo +++ b/info/passcheck.texinfo @@ -53,6 +53,7 @@ Texts. A copy of the license is included in the section entitled @menu * Overview:: Brief overview of @command{passcheck}. * Invoking:: Executing @command{passcheck}. +* Factors:: Factors weighted in at evaulation. * GNU Free Documentation License:: Copying and sharing this manual. @end menu @@ -69,16 +70,6 @@ Passphrases are read from stdin and the rating followed by the passphrase for each passphrases is written to stdout, and stderr is quited unless the program files. -It has been argued that passphrases should not form grammatically -correct sentence, even if the sentence itself if nonsense. The argument -is that the majority of possible choices of words can be eliminated for -each word position, based on the previous word. However a counterargument -for this concern is that number of possible combinations, assuming the -sentence is nonsensical, large enough even if choices can be eliminated -using grammar. Currently, evaluation based on grammar is not made, so if -you believe grammatically correct sentence should be avoided, please -manually check that the passphrase you choose does not form a grammatically -correct sentence, and preferably, not even in part. @node Invoking @@ -96,6 +87,40 @@ otherwise it is parsed as an ANSI escape sequence wish is ignored in the rating and allows you to use colours in the passphrases. + +@node Factors +@chapter Factors + +@command{passcheck} weights in the following factors when evaluating +the strength of a passphrase: +@itemize @bullet +@item +The passphrase is not a commonly use passphrase. +Currently a top-1000 list is used. +@item +The degree to which characters are mixed. +@item +The classes of used characters. For example non-ASCII +characters are better than ASCII chracters. +@item +The distance, on a QWERTY-keyboard, of successive keys. +@item +The length of the passphrase. +@end itemize + +It has been argued that passphrases should not form grammatically +correct sentence, even if the sentence itself if nonsense. The argument +is that the majority of possible choices of words can be eliminated for +each word position, based on the previous word. However a counterargument +for this concern is that number of possible combinations, assuming the +sentence is nonsensical, large enough even if choices can be eliminated +using grammar. Currently, evaluation based on grammar is not made, so if +you believe grammatically correct sentence should be avoided, please +manually check that the passphrase you choose does not form a grammatically +correct sentence, and preferably, not even in part. + + + @node GNU Free Documentation License @appendix GNU Free Documentation License @include fdl.texinfo |