rspec/rules/S2258/rule.adoc

By contract, the ``++NullCipher++`` class provides an "identity cipher" - one that does not transform or encrypt the plaintext in any way. As a consequence, the ciphertext is identical to the plaintext. So this class should be used for testing, and never in production code.


== Noncompliant Code Example

----
NullCipher nc = new NullCipher();
----


== See

* https://www.owasp.org/index.php/Top_10-2017_A6-Security_Misconfiguration[OWASP Top 10 2017 Category A6] - Security Misconfiguration
* http://cwe.mitre.org/data/definitions/327.html[MITRE, CWE-327] - Use of a Broken or Risky Cryptographic Algorithm
* https://www.sans.org/top25-software-errors/#cat3[SANS Top 25] - Porous Defenses