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Outlook minimum encryption key length settings must be set.


Overview

Finding ID Version Rule ID IA Controls Severity
V-26636 DTOO316 SV-54064r1_rule ECSC-1 Medium
Description
This setting allows the minimum key length for an encrypted email message to be configured.
STIG Date
Microsoft Outlook 2013 STIG 2014-01-06

Details

Check Text ( C-48004r1_chk )
Verify the policy value for User Configuration -> Administrative Templates -> Microsoft Outlook 2013 -> Security -> Cryptography "Minimum encryption settings" is set to "Enabled: 168 bits".

Procedure: Use the Windows Registry Editor to navigate to the following key:

HKCU\Software\Policies\Microsoft\Office\15.0\outlook\security

Criteria: If the value MinEncKey is REG_DWORD = 168, this is not a finding.
Fix Text (F-46944r1_fix)
Set the policy value for User Configuration -> Administrative Templates -> Microsoft Outlook 2013 -> Security -> Cryptography "Minimum encryption settings" to "Enabled: 168 bits".