Outlook minimum encryption key length settings must be set.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-26636	DTOO316 - Outlook	SV-34107r1_rule	ECSC-1	Medium

Description
This setting allows you to set the minimum key length for an encrypted e-mail message.

STIG	Date
Microsoft Outlook 2010	2015-09-17

Details

Check Text ( C-34232r1_chk )
The policy value for User Configuration -> Administrative Templates -> Microsoft Outlook 2010 -> Security -> Cyrptography “Minimum encryption settings” must be set to “Enabled: 168 bits". Procedure: Use the Windows Registry Editor to navigate to the following key: HKCU\Software\Policies\Microsoft\Office\14.0\outlook\security Criteria: If the value MinEncKey is REG_DWORD = 168, this is not a finding.

Check Text ( C-34232r1_chk )

The policy value for User Configuration -> Administrative Templates -> Microsoft Outlook 2010 -> Security -> Cyrptography “Minimum encryption settings” must be set to “Enabled: 168 bits".

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

HKCU\Software\Policies\Microsoft\Office\14.0\outlook\security

Criteria: If the value MinEncKey is REG_DWORD = 168, this is not a finding.

Fix Text (F-29922r1_fix)
Set the policy value for User Configuration -> Administrative Templates -> Microsoft Outlook 2010 -> Security -> Cyrptography “Minimum encryption settings” to “Enabled: 168 bits".