The system will be configured to use FIPS-compliant algorithms for encryption, hashing, and signing.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-3383	3.077	SV-32342r1_rule	ECCT-1 ECCT-2	Medium

Description
This setting ensures that the system uses algorithms that are FIPS-compliant for encryption, hashing, and signing. FIPS-compliant algorithms meet specific standards established by the U.S. Government and should be the algorithms used for all OS encryption functions.

STIG	Date
Windows Server 2008 R2 Domain Controller Security Technical Implementation Guide	2015-09-02

Details

Check Text ( C-32748r1_chk )
Analyze the system using the Security Configuration and Analysis snap-in. Expand the Security Configuration and Analysis tree view. Navigate to Local Policies -> Security Options. If the value for “System cryptography: Use FIPS compliant algorithms for encryption, hashing, and signing” is not set to “Enabled”, then this is a finding. The policy referenced configures the following registry value: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \System\CurrentControlSet\Control\Lsa\FIPSAlgorithmPolicy\ Value Name: Enabled Value Type: REG_DWORD Value: 1 Warning: Clients with this setting enabled will not be able to communicate via digitally encrypted or signed protocols with servers that do not support these algorithms. Both the browser and web server must be configured to use TLS, or the browser will not be able to connect to a secure site.

Check Text ( C-32748r1_chk )

Analyze the system using the Security Configuration and Analysis snap-in.
Expand the Security Configuration and Analysis tree view.
Navigate to Local Policies -> Security Options.

If the value for “System cryptography: Use FIPS compliant algorithms for encryption, hashing, and signing” is not set to “Enabled”, then this is a finding.

The policy referenced configures the following registry value:

Registry Hive: HKEY_LOCAL_MACHINE
Registry Path: \System\CurrentControlSet\Control\Lsa\FIPSAlgorithmPolicy\

Value Name: Enabled

Value Type: REG_DWORD
Value: 1

Warning: Clients with this setting enabled will not be able to communicate via digitally encrypted or signed protocols with servers that do not support these algorithms. Both the browser and web server must be configured to use TLS, or the browser will not be able to connect to a secure site.

Fix Text (F-28827r1_fix)
Configure the policy value for Computer Configuration -> Windows Settings -> Security Settings -> Local Policies -> Security Options -> “System cryptography: Use FIPS compliant algorithms for encryption, hashing, and signing” to “Enabled”.