SV-25113r1: The system is not configured to use FIPS compliant algorithms for encryption, hashing, and signing. | Windows 7 Security Technical Implementation Guide

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Assessment Title

Rule Text

The system is not configured to use FIPS compliant algorithms for encryption, hashing, and signing.

Description

Discussion Text

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.

How this relates to the STIG checklist: STIG vs SCAP benchmark.

IA Controls

NIST SP 800-53

Not mappedCCI-002450CCE-9266-8

Additional Details

Potential Impacts

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.

Third-Party Tools

Responsibility

System Administrator

References

DPMS Target Windows 7 DISA DPMS Target Windows 7 1712

Checks

OVAL

oval:mil.disa.fso.windows:var:372300 ← xccdf_mil.disa.stig_value_system_cryptography_use_fips_compliant_alorithm_var

SCC Automation Reference

The reconstructed evaluation script behind this rule's OVAL check(s) — every module a compound check combines, with this rule's own concrete values and DISA's SCC tool's real per-module mechanism curated from static teardown of SCC releases.

# Windows PowerShell
# Reconstructed from oval:mil.disa.fso.windows:def:3723
# The system is not configured to use FIPS compliant algorithms for encryption, hashing, and signing.
# Per-module read mechanism curated from static teardown of DISA's SCC tool
# (SCAP Compliance Checker) -- see the SCC Automation Reference above.

# Verifies 'System cryptography: Use FIPS compliant algorithms for encryption, hashing, and signing' is set to 'Enabled'
# registry_object (registry_test)
function test_1 {
  return (((@{String='reg_sz';ExpandString='reg_expand_sz';Binary='reg_binary';DWord='reg_dword';MultiString='reg_multi_sz';QWord='reg_qword';None='reg_none'}[(Get-Item -Path 'Registry::HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control\Lsa\FIPSAlgorithmPolicy').GetValueKind('Enabled').ToString()]) -eq 'reg_dword') -and (((Get-ItemProperty -Path 'Registry::HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control\Lsa\FIPSAlgorithmPolicy' -Name 'Enabled' -ErrorAction SilentlyContinue) | Select-Object -ExpandProperty 'Enabled') -eq 1))
}

if (test_1) {
  Write-Output "PASS"
} else {
  Write-Output "FAIL"
}

Assessment Script Powered by AISyntax-verified

A standalone PowerShell script to assess this control automatically. Review before running it in your environment.

Syntax-checked as valid PowerShell. Not executed here — running it for real needs the actual windows_7 target this check assesses.

# OVAL Definition: oval:mil.disa.fso.windows:def:3723
$registryPath = "HKLM:\System\CurrentControlSet\Control\Lsa\FIPSAlgorithmPolicy"
$registryValue = "Enabled"
$expectedValue = 1
if (Test-Path $registryPath) {
    $regValue = Get-ItemProperty -Path $registryPath -Name $registryValue -ErrorAction SilentlyContinue
    if ($regValue -and $regValue.$registryValue -eq $expectedValue) {
        Write-Output "PASS"
        exit 0
    }
}
Write-Output "FAIL"
exit 1

Remediation

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”.