Change record status: 
Project: 
Introduced in branch: 
8.3.x
Introduced in version: 
8.3.0
Description: 

This change record simply emphasizes a standard for writing secure code that has been documented and in place since Drupal 7. See https://www.drupal.org/docs/7/security/writing-secure-code-0/use-of-hash....

As a reminder, any time you need a hash or hmac, use on of the core methods.

In the very rare case you must have a shorter hash value, use a substring of the core hash at least 22 characters long (132 bits). There is almost never a reason this is needed.

If you need a unique value that should not collide with previously generated values, you may want to use http://php.net/manual/en/function.uniqid.php.

Impacts: 
Module developers
Updates Done (doc team, etc.)
Online documentation: 
Not done
Theming guide: 
Not done
Module developer documentation: 
Not done
Examples project: 
Not done
Coder Review: 
Not done
Coder Upgrade: 
Not done
Other: 
Other updates done