# About

xkcd-style password generator

![](t/fig/password_strength.png)

[xkcd #936: Password Strength](https://xkcd.com/936/)

# Usage

```text
$ xpg -h
xpg 0.17.2 <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 (see note 2) [default: 10]
  -C, --config <PATH>       Configuration file
  -e, --extended            Merge extended words (see note 3)
  -A, --apply-case <STYLE>  Apply case style [possible values: upper, lower,
                            title, toggle, camel, pascal, upper-camel, snake,
                            upper-snake, screaming-snake, kebab, cobol,
                            upper-kebab, train, flat, upper-flat, alternating,
                            random, pseudo-random]
  -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-condensed`
        * `haiku-` | `haiku-with-syllables-condensed`
        * `haiku`
        * `haiku+` | `haiku-with-syllables`
        * `haiku++` | `haiku-full`
        * `haiku+++` | `haiku-full-with-syllables`

2. Ten attempts are made to satisfy the given length requirements by default;
   use `-a N` and set `N` to the number of attempts to increase chances.
   It will exit with an error if unable to satisfy requirements; some
   configurations will always produce an error.

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

```text
$ xpg -V
xpg 0.17.2
```

*See also the [Configuration] section below.*

[Configuration]: #configuration

### Examples

```text
$ xpg
woodproudmouthnine
```

#### Generate 10 passwords

```text
$ xpg -c 10
matterablemorningmusic
seatdetailsspentcurrent
feelingstreamcauseetching
fruitsystemschoolstay
branchespeaceriddenneed
moneymetalwashworkers
pressitselflonesurprise
arizonawhencompletesince
darecompoundperfectcrowd
sickdiscoveredquestionssmoke
```

#### Generate passwords forever

*or until Ctrl+C / SIGINT*

```text
$ xpg -c 0
walkgalaxypatternwife
stationshinealabamafifth
milefoodbattlefeel
wondermeatplanecommon
virginiagainsharpnear
risepulledwishlate
providemoleculesintoover
scienceangerfrenchstudy
peruminedifferentcrowd
suddenleavehurtsmiled
^C
```

#### Generate a password with 8 words

```text
$ xpg wwwwwwww
riddenfactobservestockitselffridayexpresspublic
```

#### Generate 10 passwords with 8 words

```text
$ xpg wwwwwwww -c 10
noonfarmersfollowseembirdnounroomseed
galaxyusuallyshinegavechoosetookconditionprobably
francewaleswallequationmorefeedpleasevoice
arizonacompanyarticleglossaryirelandscoreincreaseshop
soldierschanceobservehealthparagraphworkersstrangecovered
joinedhearlordplainfaceresultwoodlondon
resenttellmattersecondbonesshotdonegain
monthsbritainpersonwenteversinglekitchenanother
stringdifferencearmsjoinedeachjumpedhousecotton
famousdecideelectricitycoveredwallbelongbecausesteel
```

#### Generate a password with 2 words followed by 3 digits

```text
$ xpg wwddd
farmerstown603
```

#### Generate a password with 2 words followed by 2 symbols

```text
$ xpg wwss
farmersmoscow~*
```

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

```text
$ xpg wwds
freenight1&
```

#### Generate a password with 4 words followed by 2 lowercase letters

```text
$ xpg wwwwcc
besidetheirchairquarterbc
```

#### Generate a password with 4 words followed by 2 uppercase letters

```text
$ xpg wwwwCC
frenchwhiledelightfireAD
```

#### Generate a password with 4 title case words

```text
$ xpg TTTT
StreetWavesNoteButter
```

#### Generate a password with 4 uppercase words

```text
$ xpg WWWW
PANAMAMEASURELIVEGREEK
```

#### Generate a password with 4 words followed by 5 *any* characters

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

```text
$ xpg wwwwaaaaa
questionsjustropepassK/cZd
```

#### Generate a password with 3 words and at least 15 characters

```text
$ xpg www -m 15
germanytwentyoutside
```

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

```text
$ xpg www -M 20
flowbecauselevel
```

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

```text
$ xpg www -m 20 -M 25 -a 1000
examplelistcharacter
```

*See also [Usage] note 2.*

[Usage]: #usage

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

```text
$ xpg wwddds -l 16 -a 1000
besideafrica579&
```

*See also [Usage] note 2.*

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

```text
$ xpg '1TT!'
1BarbadosBill!
```

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

```text
$ xpg 's{adj}{adj}{n}dd'
$madesweetquestion26
```

#### Generate a password with 2 words and 1 extended word

```text
$ xpg 'ww{ext}'
britainrollrhodeisland
```

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

```text
$ xpg 'ww{T:ext}'
centleadEuropa
```

#### Generate a password with 2 words and 1 uppercase extended word

```text
$ xpg 'ww{W:ext}'
countdeathLYSITHEA
```

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

```text
$ xpg -ec 10 TTTT
SightLikelyAlwaysBring
MaterialFactoriesAfraidLead
InchBulgariaMoneyPick
NorthernWentChildhoodMember
WiseCaliforniaDevelopedWave
SevenLiftedWaitFiji
LossChileFreshTennessee
CarryNoticePickLoud
PrintedWarsawSisterTomorrow
SpreadDropAlabamaStood
```

#### Generate a keychain-style password

```text
$ xpg keychain
jtdvEn-lgcssu-lrs4ya
```

#### Generate a code name

```text
$ xpg codename
SICK SWIM
```

#### Generate a code name series

```text
$ xpg codename-series
MORENOISE NEITHERACROSS
MORENOISE FREEVALLEY
MORENOISE THREELETTER
MORENOISE FRENCHSTUDENT
MORENOISE JAPANESEBONES
MORENOISE FANCYCLOTH
MORENOISE RIDDENNEED
MORENOISE SMALLWEEK
MORENOISE STRANGESEASON
MORENOISE LITTLEGUIDE
```

#### Generate a code name series with 20 code names

```text
$ xpg codename-series -c 20
DISTANTBUILD UNDERPRESIDENTS
DISTANTBUILD MANYCOLOR
DISTANTBUILD REALREPORT
DISTANTBUILD THICKSPEED
DISTANTBUILD FAMOUSWINGS
DISTANTBUILD AROUNDHEIGHT
DISTANTBUILD MINUTEGRAY
DISTANTBUILD DOUBLELAUGHTER
DISTANTBUILD MAINTYPE
DISTANTBUILD PLAINSQUARE
DISTANTBUILD ABLEGLOSSARY
DISTANTBUILD LEFTMASTER
DISTANTBUILD NICEBRANCHES
DISTANTBUILD LONGOUTSIDE
DISTANTBUILD SMALLCAUSE
DISTANTBUILD PLEASANTWESTERN
DISTANTBUILD CONSONANTBANK
DISTANTBUILD SIMILARFARMERS
DISTANTBUILD THISSTOCK
DISTANTBUILD RAISEDMOUTH
```

#### Generate a haiku

```text
$ xpg haiku
Experiment hurt / Considerable after / Electricity
```

#### Generate a haiku with syllable pattern

```text
$ xpg haiku+
Enough fancy skin (2,2,1) / Electricity bean strike (5,1,1) / Flower finally (2,3)
```

#### Generate a condensed haiku with syllable pattern

```text
$ xpg haiku-
From-likely-amount(1,2,2)/Instruments-temperature(3,4)/Alaska-prove-smoke(3,1,1)
```

#### Generate a condensed haiku

```text
$ xpg haiku--
Considerable/Member-necessary-rose/Electricity
```

#### Generate a haiku with newlines

```text
$ xpg haiku++
Cloth particular
Wednesday Copenhagen terms
Join fast school ladder
```

#### Generate a haiku with syllable pattern and newlines

```text
$ xpg haiku+++
Build history root (1,3,1)
Dictionary December (4,3)
Branch Jupiter queen (1,3,1)
```

#### Generate a haiku with extended words

```text
$ xpg -e haiku
Kenya cloud even / Enemy Michigan hunt / South America
```

#### Generate a password with 20 *any* characters

```text
$ xpg aaaaaaaaaaaaaaaaaaaa
>g6sh:}*N6R0T1or^>_U
```

#### Same as the previous example, but shorter

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

```text
$ xpg a -m 20
cpz-V[A8GjE^2mh@>yHY
```

#### Generate 3 passwords each from a different pattern

```text
$ xpg wwww WWWW TTTT
generalgreekbranchescows
PATTERNREASONHOURSTOUCH
ArmsCurrentTwelveHeavy
```

#### Apply upper casing

```text
$ xpg -A upper 'T T T T'
SWEDEN BEING UNTIL ESPECIALLY
```

#### Apply lower casing

```text
$ xpg -A lower 'T T T T'
rock among blue cent
```

#### Apply title casing

```text
$ xpg -A title 'T T T T'
Instruments Change Kept Gave
```

#### Apply toggle casing

```text
$ xpg -A toggle 'T T T T'
wITH fELLOW hISTORY fORM
```

#### Apply camel casing

```text
$ xpg -A camel 'T T T T'
builtEffortJustGreat
```

#### Apply pascal casing

```text
$ xpg -A pascal 'T T T T'
IronStillFreeBranches
```

#### Apply upper-camel casing

```text
$ xpg -A upper-camel 'T T T T'
ShoesLargeLikeGentle
```

#### Apply snake casing

```text
$ xpg -A snake 'T T T T'
same_block_later_each
```

#### Apply upper-snake casing

```text
$ xpg -A upper-snake 'T T T T'
UPON_BUTTER_CLEAR_INDUSTRY
```

#### Apply screaming-snake casing

```text
$ xpg -A screaming-snake 'T T T T'
SINGLE_OXYGEN_CONSONANT_SUDDENLY
```

#### Apply kebab casing

```text
$ xpg -A kebab 'T T T T'
yesterday-those-either-government
```

#### Apply cobol casing

```text
$ xpg -A cobol 'T T T T'
MEET-VALLEY-JORDAN-ADVANCE
```

#### Apply upper-kebab casing

```text
$ xpg -A upper-kebab 'T T T T'
SAFE-ELEMENTS-FINE-ICELAND
```

#### Apply train casing

```text
$ xpg -A train 'T T T T'
Copy-Decide-Farmers-Nail
```

#### Apply flat casing

```text
$ xpg -A flat 'T T T T'
cakedecidedjoinedflat
```

#### Apply upper-flat casing

```text
$ xpg -A upper-flat 'T T T T'
LITTLEGAINESCAPENECK
```

#### Apply alternating casing

```text
$ xpg -A alternating 'T T T T'
sEaSoN cErTaIn AcRoSs EiGhT
```

#### Apply random casing

```text
$ xpg -A random 'T T T T'
Much twenTY bEen opiNIOn
```

#### Apply pseudo-random casing

```text
$ xpg -A pseudo-random 'T T T T'
HuNgeR ThOusANds FeEt HuMAn
```

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

```text
$ xpg '{a:1}-{W:a:2}-{T:a:3}-{olympian:4}-{T:ext:5}'
cloud-STAPLE-Decimal-dionysus-Southamerica
```

#### List the words in Color / `{color}`

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

#### List the words in Color / `{color}` in uppercase

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

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

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

#### Count the words in Color / `{color}`

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

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

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

#### Count words

```text
$ xpg -L |wc -l
1257
```

#### Count words with extended

```text
$ xpg -Le |wc -l
1403
```

# Configuration

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

[`config.json`]: config.json

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`

## `WordKind`s

* 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

Please find the [`CHANGELOG.md`] in the [repository].

[`CHANGELOG.md`]: https://github.com/qtfkwk/xpg/blob/master/CHANGELOG.md
[repository]: https://github.com/qtfkwk/xpg

# References

* Word list originated from Bart Busschots'
  [HSXKPasswd](https://www.bartbusschots.ie/s/publications/software/xkpasswd/)
  Perl module ([GitHub](https://github.com/bbusschots/hsxkpasswd),
  [CPAN: Crypt::HSXKPasswd](http://search.cpan.org/perldoc?Crypt%3A%3AHSXKPasswd)),
  specifically
  [lib/Crypt/HSXKPasswd/Dictionary/EN.pm@1d88564:38](https://github.com/bbusschots/hsxkpasswd/blob/1d88564d5bf74cf48025b372bcb635fc022962dd/lib/Crypt/HSXKPasswd/Dictionary/EN.pm#L38)