apgbfm

apgbfm -f filter -n numofwords [-q] [-s]apgbfm -f filter -d dictfile [-q] [-s]apgbfm -f filter -a word [-q]apgbfm -f filter -A dictfile [-q]apgbfm -f filter -c word [-q]apgbfm -f filter -C dictfile [-q]apgbfm -i filterapgbfm [-v] [-h]

apgbfm (APG Bloom Filter Manager) creates and manages bloom filters for the apg password generator. Bloom filters enable fast dictionary checking without loading entire dictionaries into memory. It uses SHA-1 as its hash function.This tool can be used standalone or with apg/apgd to avoid generating passwords that appear in common password dictionaries.

-f filter

Bloom filter filename to use

Create new empty filter for the specified number of words

Create new filter from dictionary file

Add a single word to the filter

Add all words from dictionary file to the filter

Check if a word exists in the filter

Check every word from dictionary file against the filter

Display filter information

Create filter in case-insensitive mode

Quiet mode

Print version information

Print help information

Bloom filters have false positives but no false negatives. A rejected password might not actually be in the dictionary, but an accepted one definitely isn't. Filter size affects accuracy.

apgbfm was created as a companion tool to apg, using bloom filters to efficiently check generated passwords against large dictionaries.

apg(1)