# pwtool
Generate passwords from random characters or words and optionally show their cryptographic hash.
The default generated password set is copy/paste friendly without extended characters that would break the default copy selection you get when double-clicking a word. They also are don't break quotation strings (quote marks, double quotes or backticks).
# installing
```
git clone https://gitlab.com/edneville/pwtool.git
cd pwtool
cargo build --release
```
please or sudo
```
please install -m0755 -o0 -g0 target/release/pwtool /usr/local/bin/
```
snap
```
please snap install pwtool
```
# modifiers
`lowercase`, `uppercase`, `numeric` and `extended` will set requirements on the passwords.
# word lists
If you want a password generated from words rather than a mixture of letters and numbers, use the `words` option, which by default uses the file `/usr/share/dict/words`. Use `wordsfile` to specify a different list.
# cryptographic hash
The `--md5`, `--bcrypt`, `--des`, `--sha1`, `--sha256` and `--sha512` options will print the cryptographic hash which can be used instead of storing the password in some systems.
The hash output can be used with `useradd`/`usermod` or `.htaccess`:
```
LINE=`pwtool --number 1 --sha256`
PW="${LINE% *}"
HASH="${LINE##* }"
USR=newuser
useradd -m -p "$HASH" -s /bin/bash $USR
echo "Password for $USR is $PW"
```
Or issue a new password to an existing user with `usermod`:
```
LINE=`pwtool --number 1 --sha256`
PW=`echo "$LINE" | sed -e 's/ .*//g'`
HASH=`echo "$LINE" | sed -e 's/.* //g'`
USR=newuser
usermod -p "$HASH" $USR
echo "Password for $USR is now $PW"
```
# format strings
With `--format` the variables can be used to output a custom string.
The variables (below) can be used within a `--format` string to output in a convenient way:
pwtool --username thingy --format "useradd -m -s /bin/bash -p '%{sha256}' %{username} # %{password}\n"
This then outputs like this:
useradd -m -s /bin/bash -p '$5$YLtTnPhYiQ891nAz$SHzSCc5vMIARxd4PYtxIOZ7mGICNsLGEGimMyFpRjE7' thingy # 8OtQUoUjV9
You can then copy/paste that around different systems where people need the same account.
Another common way is to use it for mysql setup at the same time:
pwtool --username thingy --database thing --format "grant all privileges on %{database}.* to %{username}@'%' identified with mysql_native_password as '%{mysql}';\n";
| %{des} | traditional crypt |
| %{bcrypt} | BSD standard hash |
| %{md5} | MD5 hash |
| %{sha1} | HMAC SHA1 |
| %{sha256} | SHA256 |
| %{sha512} | SHA512 |
| %{mysql} | password in mysql_native format |
| %{password} | cleartext password|
| %{username} | placeholder for --username |
| %{database} | placeholder for --database |
| %{postgres} | postgres SCRAM-SHA-256 password |