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The Photon operating system must implement NIST FIPS-validated cryptography for the following: to provision digital signatures, to generate cryptographic hashes, and to protect unclassified information requiring confidentiality and cryptographic protection in accordance with applicable federal laws, Executive Orders, directives, policies, regulations, and standards.


Finding ID Version Rule ID IA Controls Severity
V-258852 PHTN-40-000182 SV-258852r933617_rule High
Use of weak or untested encryption algorithms undermines the purposes of utilizing encryption to protect data. The operating system must implement cryptographic modules adhering to the higher standards approved by the federal government since this provides assurance they have been tested and validated. Satisfies: SRG-OS-000478-GPOS-00223, SRG-OS-000396-GPOS-00176
VMware vSphere 8.0 vCenter Appliance Photon OS 4.0 Security Technical Implementation Guide 2023-10-29


Check Text ( C-62592r933615_chk )
At the command line, run the following command to verify FIPS is enabled for the OS:

# cat /proc/sys/crypto/fips_enabled

Example result:


If "fips_enabled" is not set to "1", this is a finding.
Fix Text (F-62501r933616_fix)
Navigate to and open:


Locate the boot command line arguments. An example follows:

linux /boot/$photon_linux root=$rootpartition $photon_cmdline $systemd_cmdline

Add "fips=1" to the end of the line so it reads as follows:

linux /boot/$photon_linux root=$rootpartition $photon_cmdline $systemd_cmdline fips=1

Note: Do not copy/paste in this example argument line. This may change in future releases. Find the similar line and append "fips=1" to it.

Reboot the system for the change to take effect.