---
name: crypt
status: documented
runtime: pp
source: src/runtime/pp/strings/convert.rs
---
```{index} single: crypt; Perl built-in (pp runtime)
```

# crypt

## Synopsis

```perl
my $hashed = crypt($plaintext, $salt);
if (crypt($input, $hashed) eq $hashed) { ... }  # verify
```

## Description

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.

## See also

Digest::SHA, Digest::MD5