crypt
One-way password hashing using the system crypt(3) library.
Calls the system crypt(3) function. The SALT determines the
hashing algorithm (DES, MD5, SHA-256, SHA-512, etc. depending
on the platform). The result can be compared against a stored
hash to verify a password without storing the plaintext.
Synopsis
my $hashed = crypt($plaintext, $salt);
if (crypt($input, $hashed) eq $hashed) { ... } # verify