About

xkcd-style password generator

xkcd #936: Password Strength

Usage

$ xpg -h
xpg 0.10.0 <https://crates.io/crates/xpg>

xkcd-style password generator

Usage: xpg [OPTIONS] [PATTERNS]...

Arguments:
  [PATTERNS]...  Pattern(s) (see note 1) [default: `wwww`, `-L`: `{a}`]

Options:
  -c, --count <NUMBER>     Number of passwords (0:∞ ) [default: 1]
  -l, --length <NUMBER>    Length
  -m, --minimum <NUMBER>   Minimum length
  -M, --maximum <NUMBER>   Maximum length
  -a, --attempts <NUMBER>  Attempts [default: 10]
  -C, --config <PATH>      Configuration file
  -e, --extended           Merge extended words (see note 2)
  -L, --list               List words in `{sub}`(s)
  -d, --dump-config        Print configuration
  -r, --readme             Print readme
  -h, --help               Print help
  -V, --version            Print version

---

Notes

1. Patterns
    * Words
        * `W`: WORD
        * `w`: word
        * `T`: Word
        * `k`: `shuffle(cccc(c|d)(C|c))`
        * `{sub}`: see `WordKind`s section in readme
    * Characters
        * `C`: A-Z
        * `c`: a-z
        * `d`: 0-9
        * `s`: `~!@#$%^&*-_=+;:,./?()[]{}<>`
        * `a`: `C` | `c` | `d` | `s`
    * Special
        * `keychain`
        * `codename`
        * `codename-series`
        * `haiku`
        * `haiku+`
        * `haiku-`
        * `haiku--`
        * `haiku++`
        * `haiku+++`

2. By default, extended words are only available in exclusively extended word
   kinds; however, with `-e`, they are merged with regular word kinds; use with
   the `-L` option to see its effect.

$ xpg -V
xpg 0.10.0

See also the Configuration section below.

Examples

$ xpg
spentpairthosecanada

Generate 10 passwords

$ xpg -c 10
cottonathenshalffirm
thirdconsonantbelongproduce
thinkpairjamaicadecided
aboutglossaryalthoughdone
wholecompanytriedpick
britainpoorenemyexpect
usualnorwaywavecentury
schoolgoodblockspeak
repeatedbarbadosfellgrave
teachboatthinksave

Generate passwords forever

or until Ctrl+C / SIGINT

$ xpg -c 0
huntflowersfoodwaves
signalfastheavydollars
plantconditionsdiedthink
musicnearlygiftcomplete
providelineentiretear
chieftoolslineexpect
stophardwavesseeds
distanceablereceivedwhom
meatgrewmercurylikely
lendsisterhealthaction
^C

Generate a password with 8 words

$ xpg wwwwwwww
inchesmovementdivideboneslondonspeakwantthan

Generate 10 passwords with 8 words

$ xpg wwwwwwww -c 10
breakwavedivisionweekshopliststrangeroll
agreecamefiveelectricitydivisioncopysubstancesfear
decidedmarylandkeepblockthingexplainbegincake
exactlychoosedoestallshownbeatthusraised
otherheareggspainunderstoodmastercrossremember
streettakepoemsteelhousedresschoosefancy
suddenlyhavanareachedunderlegsfactorderlysupply
troublesugarfourwildheavybothfirmcontinue
everysomeaheadsignalballchartsucceedforest
brotherdirectionquickdoubtnicehangmetaledge

Generate a password with 2 words followed by 3 digits

$ xpg wwddd
oftenstrike126

Generate a password with 2 words followed by 2 symbols

$ xpg wwss
fingersgame({

Generate a password with 2 words followed by a digit and a symbol

$ xpg wwds
africapast2&

Generate a password with 4 words followed by 2 lowercase letters

$ xpg wwwwcc
handsuddenlystarsoftca

Generate a password with 4 words followed by 2 uppercase letters

$ xpg wwwwCC
changeblockspainscienceUV

Generate a password with 4 title case words

$ xpg TTTT
RockThrewDressShore

Generate a password with 4 uppercase words

$ xpg WWWW
SEPTEMBERMOUTHELECTRICSENSE

Generate a password with 4 words followed by 5 "any" characters

An "any" character can be a lowercase letter, uppercase letter, digit, or symbol.

$ xpg wwwwaaaaa
wholeshotthinktrustjxAM1

Generate a password with 3 words and at least 15 characters

$ xpg www -m 15
dollarshairtall

Generate a password with 3 words and no more than 20 characters

$ xpg www -M 20
elseplainsenemy

Generate a password with 4 words and between 20 and 25 characters

Increase attempts to help it succeed.

$ xpg www -m 20 -M 25 -a 1000
lisbonalwayscarefully

Generate a password with 2 words, 3 digits, 1 symbol, and exactly 16 characters

Increase attempts to help it succeed.

$ xpg wwddds -l 16 -a 1000
alaskashould203?

Generate a password with a 1, 2 title case words, and !

$ xpg '1TT!'
1CorrectYourself!

Generate a password with 1 symbol, 2 adjectives, 1 noun, and 2 digits

$ xpg 's{adj}{adj}{n}dd'
:enoughjustaustralia74

Generate a password with 2 words and 1 extended word

$ xpg 'ww{ext}'
thoughfineaoede

Generate a password with 2 words and 1 title case extended word

$ xpg 'ww{T:ext}'
picturearrivePraxidike

Generate a password with 2 words and 1 uppercase extended word

$ xpg 'ww{W:ext}'
shotwashingtonOKLAHOMA

Generate 10 passwords with 4 title case words and extended words merged

$ xpg -ec 10 TTTT
WheelFinlandFarmersBack
PrintedSpreadToneDare
AreaDoorHurtUnderline
InterestKansasGraveBattery
GanymedeShopProudGame
AugustFireAboutService
IntoSaltSaturdayReally
FiftyLoudTalkCentury
BelgiumGuessTrustFelt
ToreAngleSouthernPeru

Generate a keychain-style password

$ xpg keychain
aomw0v-bditdq-vkSoaa

Generate a code name

$ xpg codename
GREEK KNOWN

Generate a code name series

$ xpg codename-series
NATURALCOST PRETTYSTORE
NATURALCOST HOWEVERSPRING
NATURALCOST HEADWIFE
NATURALCOST MOREYELLOW
NATURALCOST THIRDCIGARETTE
NATURALCOST SHARPNORTH
NATURALCOST SIMILARVOICE
NATURALCOST BESTWING
NATURALCOST NICENEIGHBOR
NATURALCOST FIRMFENCE

Generate a code name series with 20 code names

$ xpg codename-series -c 20
WRONGMELODY HOWEVERELECTRICITY
WRONGMELODY EARLYTHREE
WRONGMELODY CAPITALNAIL
WRONGMELODY DEVELOPEDASIA
WRONGMELODY DIRECTSOLDIER
WRONGMELODY DONELOVE
WRONGMELODY SHALLHELLO
WRONGMELODY WESTEQUAL
WRONGMELODY GONESTRANGER
WRONGMELODY MORECLOCK
WRONGMELODY THICKWORD
WRONGMELODY DEAREXERCISE
WRONGMELODY HARDNINE
WRONGMELODY ABOVEHEIGHT
WRONGMELODY STRAIGHTSAND
WRONGMELODY UNDERPEACE
WRONGMELODY THOSESCIENCE
WRONGMELODY LEFTTAKE
WRONGMELODY CLOSEWISH
WRONGMELODY USUALHOURS

Generate a haiku

$ xpg haiku
Yourself delaware / Repeated botswana suit / Especially noon

Generate a haiku with syllable pattern

$ xpg haiku+
Carry start complete (2,1,2) / Electricity kiss cross (5,1,1) / Front exactly wrote (1,3,1)

Generate a condensed haiku with syllable pattern

$ xpg haiku-
Below-represent(2,3)/Jamaica-article-read(3,3,1)/Electricity(5)

Generate a condensed haiku

$ xpg haiku--
Orderly-china/Colombia-sight-loss-trip/Record-congo-shore

Generate a haiku with newlines

$ xpg haiku++
Page grain against church
Montana dictionary
Electricity

Generate a haiku with syllable pattern and newlines

$ xpg haiku+++
California short (4,1)
Considerable sweet broad (5,1,1)
Became till earth plants (2,1,1,1)

Generate a password with 20 "any" characters

$ xpg aaaaaaaaaaaaaaaaaaaa
VR/N0[S:(i36y:3byr*k

Same as the previous example, but shorter

This works because a character-only pattern is padded to the minimum length with the last character.

$ xpg a -m 20
CD+m7tHQIv_U=;8I:q)H

Generate 3 passwords each from a different pattern

$ xpg wwww WWWW TTTT
indeedstoodworlddone
LETTERAROUNDPROBABLESELF
StoreJumpBritainLight

Generate a password with words with 1, 2, 3, 4, and 5 syllables

$ xpg '{a:1}-{W:a:2}-{T:a:3}-{olympian:4}-{T:ext:5}'
sound-MAYBE-Suddenly-aphrodite-Northcarolina

List the words in Color / {color}

$ xpg -L '{color}'
black
blue
brown
gray
green
white
yellow

List the words in Color / {color} in uppercase

$ xpg -L '{W:color}'
BLACK
BLUE
BROWN
GRAY
GREEN
WHITE
YELLOW

List the words in Color / {color} in title case

$ xpg -L '{T:color}'
Black
Blue
Brown
Gray
Green
White
Yellow

Count the words in Color / {color}

$ xpg -L '{color}' |wc -l
7

List the words in Color / {color} and Element / {W:el}

$ xpg -L '{color}' '{W:el}'
black
blue
brown
gray
green
white
yellow
GOLD
IRON
LEAD
MERCURY
OXYGEN
SILVER

Count words

$ xpg -L |wc -l
1257

Count words with extended

$ xpg -Le |wc -l
1400

Configuration

See config.json or use -d for the default configuration compiled into the binary executable.

If another file is placed at any of the following locations or the path provided via the -C option at runtime, it will be used instead.

• Linux: /home/username/.config/xpg/config.json
• Windows: C:\Users\username\AppData\Roaming\qtfkwk\xpg\config\config.json
• macOS: /Users/username/Library/Application Support/com.qtfkwk.xpg/config.json

WordKinds

• AllExtended / {a.ext}
  • All / {a}
    • Adjective / {adj}
      • Color* / {color}
      • Nationality / {nat}
    • Adverb / {adv}
    • Conjunction / {conj}
    • Interjection / {i}
    • Noun / {n}
      • PluralNoun / {n.pl}
      • Pronoun / {n.pro}
      • SingularNoun / {n.s}
        • Astronomy / {ast}
          • Moon / {moon}
          • Planet / {planet}
        • Color* / {color}
        • Day / {day}
        • Month / {mon}
        • ProperNoun / {n.prop}
          • Element / {el}
          • Name / {name}
            • FemaleName / {fname}
            • MaleName / {mname}
          • Place / {place}
            • City / {city}
            • Continent / {cont}
            • Country / {country}
            • UsState / {us-state}
          • Mythology / {myth}
            • GreekMyth / {greekmyth}
              • Olympian / {olympian}
              • Chthonic / {chthonic}
            • RomanMyth / {romanmyth}
    • Preposition / {prep}
    • Verb / {v}
      • AuxiliaryVerb / {v.aux}
      • IntransitiveVerb / {v.int}
      • TransitiveVerb / {v.tr}
      • VerbPast / {v.past}
  • Extended / {ext}
    • Noun / {n}
      • SingularNoun / {n.s}
        • Astronomy / {ast}
          • Moon / {moon}
            • MarsMoon / {marsmoon}
            • JupiterMoon / {jupitermoon}
            • SaturnMoon / {saturnmoon}
            • UranusMoon / {uranusmoon}
            • NeptuneMoon / {neptunemoon}

Notes

1. WordKind / {sub}

2. It is only necessary to set the most descriptive WordKind(s) since they are automatically included in the larger word kinds.

3. The characters object value must contain the C, c, and d keys with non-empty values. Additional keys/values can be added and used.

4. {sub}s produce lowercase words by default, but if prefixed with W: or T: words will be uppercase or title case, respectively: i.e. {W:sub} or {T:sub} (replace sub with an actual {sub} name above).

5. {sub}s include all words by default, but if suffixed with :N where N is a number, it will only include words with that number of syllables: i.e. {sub:N} (replace sub with an actual {sub} name above and N with the desired number of syllables ~1-5).

Changelog

• 0.1.0 (2019-09-08): store wordlist as constant and operate on it without copying; select N words without repetition via choose_multiple; tests; benchmark various implementations; xpg function; xpg! macro to enable optional word count argument; command line interface via clap
• 0.1.1 (2019-09-08): minor fixes
• 0.1.2 (2019-09-08): minor fixes
• 0.2.0 (2019-09-09): expose xpg! macro; improve documentation
• 0.3.0 (2022-10-01): update dependencies; add digits and symbols options
• 0.3.1 (2022-10-01): fix readme
• 0.4.0 (2022-10-02): add --lowercase, --uppercase, and --any options; enable --words option to be zero if --any option is greater than zero; enable infinite passwords via -c 0
• 0.5.0 (2022-10-13): add --keychain and --code-name options
• 0.6.0 (2023-11-22): remove num and factorial crate dependencies; improve permutations function; update dependencies; apply clippy fixes and cargo fmt; reorganize
• 0.6.1 (2023-11-22): fix readme
• 0.7.0 (2023-11-24): complete redesign
• 0.8.0 (2023-11-25): remove benchmark; simplify cli options; add -r and -C options; restore -c 0 functionality; add codename-series special pattern; add word kind subpatterns; enable external runtime configuration via new Config struct
• 0.8.1 (2023-11-25): fix -C option
• 0.9.0 (2023-11-26): add extended words; enable multiple patterns; add -e and -L options; make -d dump the loaded not default configuration
• 0.10.0 (2023-11-27): add syllables and haiku* special patterns; fix the codename series algorithm; make olympian/chthonic kinds extended; update dependencies

References

• Word list originated from Bart Busschots' HSXKPasswd Perl module (GitHub, CPAN: Crypt::HSXKPasswd), specifically lib/Crypt/HSXKPasswd/Dictionary/EN.pm@1d88564:38