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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
ClientSecuritySolution8.3supportsbackgroundenrollmentforuserenrollmentthatisstartedautomatically.
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.
22ClientSecuritySolution8.3DeploymentGuide
- ClientSecuritySolution8.3 1
- DeploymentGuide 1
- “Notices”onpage75 2
- Contents 3
- ©CopyrightLenovo2008,2011 5
- Chapter1.Overview 7
- ClientSecurityPasswordManager 8
- CerticateTransferwizard 9
- Hardwarepasswordreset 9
- FingerprintSoftware 10
- Chapter2.Installation 11
- TrustedPlatformModulesupport 12
- Chapter2.Installation7 13
- Usingmsiexec.exe 14
- .Installation9 15
- Installationlogle 17
- Silentinstallation 18
- .Installation13 19
- SystemsManagementServer 23
- UsingtheTrustedPlatformModule 25
- TakeOwnership 26
- EnrollUser 27
- Softwareemulation 28
- Systemboardswap 29
- EFSprotectionutility 31
- UsingtheXMLSchema 32
- Examples 32
- ENABLE_PWMGR_FUNCTION 33
- ENABLE_CSS_GINA_FUNCTION 33
- ENABLE_UPEK_GINA_FUNCTION 33
- ENABLE_NONE_GINA_FUNCTION 35
- SET_PP_FLAG_FUNCTION 35
- SET_ADMIN_USER_FUNCTION 35
- INITIALIZE_SYSTEM_FUNCTION 36
- ENROLL_USER_FUNCTION 37
- USER_PW_RECOVERY_FUNCTION 37
- UsingRSASecurIDtokens 38
- Requirements 39
- ActiveDirectorySupport 39
- Fingerprintswiperesult 40
- Command-linetools 40
- SecurityAdvisor 41
- Deploymentleprocessingtool 43
- TPMENABLE.EXE 43
- CerticateTransfertool 43
- Deningmanageablesettings 47
- GroupPolicysettings 48
- AuthenticationPolicies 49
- Passwordmanager 49
- UserInterface 50
- Workstationsecuritytool 51
- Managementconsoletool 53
- User-speciccommands 53
- Globalsettingscommands 54
- Securemodeandconvenientmode 55
- Securemode-administrator 55
- Securemode-limiteduser 55
- Convenientmode-administrator 56
- Convenientmode-limiteduser 56
- Congurablesettings 57
- Authenticating 58
- Chapter6.BestPractices 63
- Scenario2 65
- Chapter6.BestPractices61 67
- CreatingtemplateforTPMuser 68
- Chapter6.BestPractices63 69
- Windows7logon 70
- Chapter6.BestPractices65 71
- Congurationandsetup 73
- Pre-desktopauthentication 73
- Windowslogon 73
- Windowsoperatingsystem 77
- HowtodeployBitLockerremotely? 79
- HowdoesTPMlockoutwork? 79
- AppendixE.Notices 81
- Trademarks 82
- Glossary 83
- PartNumber: 86
- PrintedinUSA 86
- (1P)P/N: 86
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