Nextpass generates cryptographically secure passwords.

It can either be used on the command line, or imported by other go projects. Whenever you need to create your next password, use nextpass.

go get -u github.com/n0ot/nextpass/...

Change to github.com/n0ot/nextpass
Build:

make

Or install:

make install

Cross compile to Windows, Linux, FreeBSD, and Darwin:

make all

make windows

Usage

nextpass [options]

-A, --additional    read additional characters from standard input, encoded in UTF-8; newline characters will NOT be ignored
-D, --digits        include digits 0-9
-l, --length uint   length of resulting password (default 64)
-L, --lower         include lowercase letters a-z
-n, --no-newline    Don't print a newline after the password
-r, --random-source string   specify a file to be used as an alternate source of randomness. Don't use this unless you know what you're doing.
-S, --special       include special characters, which are the printable ascii characters excluding letters, digits, and the space
-t, --type string            Use a predefined character set.
-U, --upper         include uppercase letters A-Z
-v, --verbose       print more information, in addition to the generated password
-V, --version                print the version and exit

Character sets available with --type: base64|base58|url|hex|octal|binary

If the included characters are not enough,
use -A, and pass your favorite foreign characters or emojis into standard input.

Duplicate characters are not allowed in the final alphabet

Examples

nextpass -l 32 -LUDS

generates a password with length 32, including lowercase and uppercase letters, digits, and special characters.

echo -n ABCDEF | nextpass -DA

generates a 64 digit hexadecimal string (256 bits).

nextpass -t hex

does the same thing as above.

Security

crypto/rand is used as a source of random entropy by default. The required number of bytes to generate a password are read all at once, and the result is encoded using the chosen set of characters.