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Thefollowingdiagramprovidesthestructurefortheuserlevelkey:
User Level Key Structure - Enroll User
Trusted Platform Module
Encrypted via derived AES Key
Storage Root Private Key
Storage Root Public Key
User Leaf Private Key
User Base Private Key
User Leaf Public Key
User Base Public Key
Windows PW AES Key
PW Manager AES Key
User Base Private Key
User Base Public Key
If Passphrase
loop n times
User PW/PP
One-Way Hash
One-Way Hash
User Base AES
Protection Key
(derived via output
of hash algorithm)
Auth
Figure2.UserLevelKeyStructure-EnrollUser
Backgroundenrollment
ClientSecuritySolution8.21supportsbackgroundenrollmentforuserenrollmentthatisstarted
automatically.Theenrollmentprocessrunsinthebackgroundwithoutdisplayinganynotications.
Note:Thebackgroundenrollmentisonlyavailableforuserenrollmentthatisstartedautomatically.Foruser
enrollmentthatisstartedmanually,fromthestartmenuorfromtheResetSecuritySettings,adialog
indicatingtheusertowaitfortheuserenrollmentwillstillbedisplayed.
Localadministratorordomainadministratorcanalsoforcethewaitingdialogtobedisplayedbyediting
thefollowingpolicyasbelow:
CSS_GUI_ALWAYS_SHOW_ENROLLMENT_PROCESSING
Orbyeditingthefollowingregistrykeyasbelow:
HKLM\software\policies\lenovo\clientsecuritysolution\GUIoptions\
AlwaysShowEnrollmentProcessing
ThedefaultvalueofAlwaysShowEnrollmentProcessingis0.Whentheaboveregistrykeyissetto0,the
waitingdialogisnotdisplayedforuserenrollmentstartedautomatically.Whenthispolicyissetto1,the
waitingdialogwillalwaysbedisplayedduringuserenrollmentregardlessofhowtheenrollmentisstarted.
Softwareemulation
ToprovideaconsistentexperiencefortheuserwhosecomputerdoesnothaveaTPM,CSSsupportsthe
TPMemulationmode.
TheTPMemulationmodeisasoftware-basedrootoftrust.Thesamefunctionalitiesprovidedbythe
TPM,includingdigitalsignature,symmetrickeydecryption,RSAkeyimport,protection,andrandom
numbergeneration,areavailabletotheuser,exceptthereisdecreasedsecuritybecausetherootoftrustis
softwarebasedkeys.
20ClientSecuritySolution8.21DeploymentGuide
- ClientSecuritySolution8.21 1
- DeploymentGuide 1
- “Notices”onpage75 2
- Contents 3
- ©CopyrightLenovo2008,2012 5
- Chapter1.Overview 7
- ClientSecurityPasswordManager 8
- CerticateTransferwizard 9
- Hardwarepasswordreset 9
- FingerprintSoftware 10
- Chapter2.Installation 11
- Custompublicproperties 12
- TrustedPlatformModulesupport 12
- Chapter2.Installation7 13
- Usingmsiexec.exe 14
- .Installation9 15
- Installationlogles 17
- Silentinstallation 18
- SystemsManagementServer 21
- UsingtheTrustedPlatformModule 23
- TakeOwnership 24
- EnrollUser 25
- Softwareemulation 26
- Systemboardswap 27
- EFSprotectionutility 29
- UsingtheXMLSchema 30
- Examples 30
- ENABLE_PWMGR_FUNCTION 31
- ENABLE_CSS_GINA_FUNCTION 31
- ENABLE_UPEK_GINA_FUNCTION 31
- ENABLE_NONE_GINA_FUNCTION 33
- SET_PP_FLAG_FUNCTION 33
- SET_ADMIN_USER_FUNCTION 33
- INITIALIZE_SYSTEM_FUNCTION 34
- ENROLL_USER_FUNCTION 35
- USER_PW_RECOVERY_FUNCTION 35
- SETUP_PDA_FUNCTION 36
- SET_USER_AUTH_FUNCTION 36
- Fingerprintswiperesult 38
- Command-linetools 38
- SecurityAdvisor 39
- Deploymentleprocessingtool 41
- TPMENABLE.EXE 41
- CerticateTransfertool 41
- TPMactivatetool 42
- ActiveDirectorySupport 43
- GroupPolicysettings 44
- Defaultmode 45
- AuthenticationPolicies 45
- Passwordmanager 46
- UserInterface 46
- Workstationsecuritytool 47
- ActiveUpdate 48
- ActiveUpdateParameterFile 49
- Managementconsoletool 51
- User-speciccommands 51
- Globalsettingscommands 52
- Securemodeandconvenientmode 53
- Securemode-administrator 53
- Securemode-limiteduser 53
- Convenientmode-administrator 54
- Convenientmode-limiteduser 54
- Congurablesettings 55
- Authenticating 56
- Chapter6.BestPractices 61
- “NOCSSWIZARD=1”” 62
- Scenario2 63
- SystemUpdate 65
- SystemMigrationAssistant 66
- Requirements: 66
- WindowsVistalogon 67
- WindowsXPlogon 68
- Chapter6.BestPractices63 69
- Chapter6.BestPractices65 71
- Congurationandsetup 75
- Pre-desktopauthentication 75
- Windowslogon 75
- WindowsXP-WelcomeScreen 76
- WindowsXP-Classiclogonprompt 76
- WindowsVista 76
- Windowspasswordisreset 79
- AppendixD.Notices 81
- Trademarks 82
- Glossary 83
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