unixpass

In A Nutshell

This is a native javascript implementation of Unix/Linux compatible password hashing. The currently implemented variants include legacy-DES, MD5 ($1$), SHA256 ($5$), and SHA512 ($6$).

The ones missing are

• Legacy extended DES encryption (_ + 24 bit rouns + 24 bit salt ...)
• Blowfish hashing ($2$, $2a$, $2b$, $2x$, $2y$)

Should some brave soul implement any or all of above, they will be accepted.

Usage

const up = require('unixpass');

// Returns password hash using SHA256
up.crypt('mypassword', '$5$saltsaltmoresalt');

// Returns a password hash with autogenerated salt using SHA512
up.mkpass('mypassword');

// Returns true if password matches hash, false otherwise
up.check('mypassword', '$1$saltsalt$dfhjlwheucnsdicbnwuibnwicb');

Caution!

Be aware that legacy-DES only cares about first 8 characters of the password. While no new passwords should be encrypted using that, it may be useful in validating some old stuff. Also, it is an interesting piece of history that deserves to be reimplemented also in js.

Author

Timo J. Rinne [e-mail]

License

GPL-2.0