rspec/rules/S2258/java/rule.adoc

== Why is this an issue?

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

[source,java]
----
NullCipher nc = new NullCipher();
----


== Resources

* https://owasp.org/www-project-top-ten/2017/A6_2017-Security_Misconfiguration[OWASP Top 10 2017 Category A6] - Security Misconfiguration
* https://cwe.mitre.org/data/definitions/327[MITRE, CWE-327] - Use of a Broken or Risky Cryptographic Algorithm
* https://www.sans.org/top25-software-errors/#cat3[SANS Top 25] - Porous Defenses


ifdef::env-github,rspecator-view[]

'''
== Implementation Specification
(visible only on this page)

=== Message

Remove this use of the "NullCipher" class.


'''
== Comments And Links
(visible only on this page)

=== on 3 Dec 2014, 16:05:08 Nicolas Peru wrote:
As discussed, detecting call to constructor(s) is sufficient.

endif::env-github,rspecator-view[]