apgbfm

Generate bloom filter from dictionary

$ apgbfm -d [dictionary.txt] -f [filter.bf]

$ apgbfm -f [filter.bf] -c [password]

$ apgbfm -d [dictionary.txt] -f [filter.bf] -n [1000000]

apgbfm [-d dictfile] [-f filterfile] [-n size] [-c word]

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.
This tool is used to create filter files from word lists that apg can use to avoid generating passwords that appear in common password dictionaries.

-d file

Dictionary file (word list)

Bloom filter file

Number of elements (affects accuracy)

Check if word might be in filter

Verbose output

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)